Stokes mod princeton reverb. This mod is commonly known as the "Stokes mod".

Stokes mod princeton reverb Add the preamp tube draw to the power tube draw, and you get a 2. Princeton Reverb. Feb 14, 2015 · My friend just bought a Princeton Reverb 65 Reissue. Aug 2, 2019 · The Stokes Mod was made by the preowner and is history. Easy, quick mod. the DRV is set to do the klon boost thing, and the mini is always on with a bit of bottom end and a touch of crackle in the bias Sep 22, 2018 · So I wanted to experiment with a 6v6 as found in a Reverb unit but el84 uses the same socket as the 12at7 so the mod can be reversible. In Princeton Reverbs there is an untapped filter stage that is ideal for this purpose. This Mod kit is designed to get your 65' Princeton Reverb or 68' Custom Reverb to sound it's very best and give it a vintage feel. This mod is so thoroughly discussed elsewhere in different forums that we will only make a few comments on it. I liked the smaller size, but I thought it would sound like a smaller Deluxe Reverb, and it doesn't at all. You can start with that stokes mod. The rectifier is an old stock Mullard GZ34, which should be able to handle the current demands no problem (I hope). Back in 2001 I drew up the following "fake" schematic to illustrate the similarities between the PR and Trainwreck preamps if you replace the Jul 17, 2008 · This is a really common "mod". Then there is adding a mids pot or the Stokes mod. Our mods take the PRRI back to the glory days of the blackface era and adds a couple of the most famous mods done to this amp over time. Used – Mint. I'm building a new Princeton Reverb based on the aa1164 circuit and I'm picking transformers for the build. Apr 8, 2014 · Time to build a new amp! After building the 5G9 Tremolux, which is still going strong btw, it’s time for another low wattage tube amp. IMO the original Princeton Reverb incorporates design flaws since its inception back in '64. Or using a PT (and OT) that allows for running 6L6s or 5881s. . Cabinet TAD. I realise that as the Cathodyne is unity-gain, raising the voltage will not achieve more gain. Otherwise mod the heck out of it till it is even further from a Princeton Reverb. Tremolo can be quite weak in Princeton so I changed the 1M resistor that couples the oscillator to the bias pot to 220k (R33 in my schematic). The ceramic 10S may not be as efficient as a Vintage series, but it surprised me when I tried it out after trying a Weber 10A100, 10A125, 10F125, reissue Jensen P10R & C10R, original Oxford, a CTS AlNiCo (love 4 of 'em in my SR's) and the reconed ceramic (non-stock) CTS that came with my amp. Using a lead clipped from the filter caps solder one end to the solder lug and the other to the left hole of R62 - see photo. The “Stokes Modified Princeton Reverb Schematic Dual Bias. I know it won't roar like the Marshall but I've mellowed out in my age. Is the Oct 10, 2009 · It's had the Stokes mod which boosts power and headroom a bit, but: I had a 10" Eminence Ragin Cajun in it before, and would put the volume on about 8 at band practice (with the other guitarist using two Hot Rod Deluxes in stereo, albeit with their volume somewhere around 2). They are solid and economical choice for players need some work to sound like the original amp. Jun 7, 2006 · i think "stokes" is the name, adds a little more clean headroom, any one had good results with it ? Nov 1, 2024 · Remove R60( and the solder from the hole on the left side) and install a solder lug in the standoff screw next to R60. Stokes mod. Sep 1, 2009 · I have not built the attached circuit but do have built two Princeton Reverb clones. This is well above the stock Princeton Mresistor, yes i confirmed the voltages arent causing the issue. JJ 6V6s and with Stokes Mod is one beast of a PR. As the title suggest, the Princeton Reverb added a reverb circuit and control. Rectifieuse : GE NOS. tubeswell), it will be a Princeton reverb clone and the idea is ‘going back in time’. Jun 12, 2011 · Try a 12ay7 in v1. I tried running my SF Princeton cathodyne PI off the unused C node for more voltage. Aug 9, 2011 · The standard clones are held to is the best clone is the best copy of the original. I'm not a fan of the PaulC. Aug 31, 2009 · Andrew-any BF/SF OT will be fine. Buy the ri one with the 10 inch speaker if you want PR tone. A head with both tremolo and reverb, and inspired by again some of the forum members here at the forum (e. Th One of Fender's most classic amplifiers remains a favorite to this day and the Princeton Reverb Reissue is perhaps the most successful of the reissue series. i used to use a compressor instead of the MG, but the MG compresses enough for me and adds the touch of clarity for that string definition and jangle. Compare the schematics side by side and you'll see what I mean. Z output xformer, 12" Celestian, tilt-backs, Stokes mod. 1A draw to heat all of the tubes in a STOCK Princeton Reverb. Our mod kit comes with full color online instructions and allows you to change the power supply of the phase inverter to the unused anode in the power filtering circuit. The Reverb Transformer is a Hammond 1750A with a 22. 8k ohm primary and rated at 3. Dec 11, 2023 · Hello, I'm building a Mojotone Blackface Princeton Reverb kit and plan on installing an adjustable bias control. It gave more headroom but made the overdrive tone way too ratty, though I think the result can vary from amp to amp. 65 princeton with the 12” jensen speaker. Maybe the phase inverter is just adding too much gain so the 5751 tames that. Two 6l6s draw 1. Looking at the forum I found a Mod Fritz_D_Cat / Stokes Mod PRRI The solution here is to add a grid resistor to the cathode follower side of V4. Dec 2, 2011 · Maybe I got the 'mod name' wrongit could be the stokes mod. Aug 26, 2011 · The Stokes mod just puts more voltage on the PI plate, tightens it up a bit and some say it makes the amp a bit louder. Some like to buy a little more gain by taming the reverb, but for me a hot and jumpy reverb is part of the charm with PR's. Th Jun 28, 2009 · The Princeton Reverb is the smallest Fender tube amp with both reverb and tremelo. Another more invasive thing to try is a DR OT. Originally $1,799, now $1,599 ($200 price drop) $1,799. 12" Celestion. I read some people say Stokes mod causes PT burn due to increase of power tube output. I built a Vibro Champ clone for a house/practice amp which turned out great. Replaced boost switch with 68p bright cap, replaced treble with switching pot 250p/125p cap, replaced bass with switching pot, 6. I am also a big fan of the mids pot. With "low-gain" amp like Princeton decent lead dress and layout is all that is needed to keep the amp hum free. Works for a lot of gigs. Jul 6, 2006 · I love 10" speakers and humbucking guitars, they seem to fit together real well. I'm also a fan of moving the reverb transformer connection to the same unused node. 8A, and when added to the preamp draw of 1. Swapped out the reverb tank for a 6 spring Accutronics. Reverb tank is a MOD 3 spring (what they called a 6 spring back in the day). You should consider this mod if you are increasing the headroom in your amp Paul C mod, Stokes mod, Diode rectifier, etc. I also add another 22uf filter capacitor across the first node to beef it up a bit. So does the reverb. Gerald Weber wrote a column on doing this mod in a 1996 issue of Vintage Guitar. I had a Princeton Reverb Silverface (78) and now I have bought a new PRRI. It's a very nice sounding amp, one of the best PRs I've ever heard but its got a ticking in the tremolo. These things, along with a Fender Blue AlNiCo 10 will warm the amp up. Sounds like the guy wanted you to turn his amp into a Deluxe Reverb (or a Pro Reverb, but with 1 speaker and 6V6's). Fender Princeton Reverb Brit Green Mod 2024 - Brit Green Tolex. So far, besides the 3k hand wired reissue that is point to point is very appealing, it's just so expensive, and I suppose I could have the same mods done to do , but for more money. If you read the fenderguru page for the Princeton Reverb there is a modification section listed as "weak tremolo" in there it says to replace a resistor in and around V4in a traditional PTP amp this resistor is a little easier to find but on the Reissue that is done on a circuit LTP gives a smoother more modern overdrive. This mod is commonly known as the "Stokes mod". This amp has been updated with the following mods:-The Amp has been moded to brownface Princeton specs-Tone switch replaced with a pot offering more choice for tone settings-Tremolo depth control pot added for more control of built One of Fender's most classic amplifiers remains a favorite to this day and the Princeton Reverb Reissue is perhaps the most successful of the reissue series. I'm convinced that every Princeton Reverb needs the Stokes mod. I'm really happpy with the sound of the amp. Sep 1, 2004 · Even though the stock amp is a great sounding amp at lower volumes with all 3 mods (speaker, Paul C, and Stokes mod) it is an even greater sounding ampLouder and clearer cleans and great singing distorted tones (with no low frequency flubbiness). Used – Excellent. I'm very happy with the sound ov the RI. As a whole though, it nets to be a little more gain than the loss, so the reverb amps are capable of more drive. It's a perfect size for a grab 'n' go amp. The non-reverb version is sweet sounding and has nice headroom, but doesn't have much grind when it's driven hard. Next to try is the PaulC mod, then on to the preamp section if it needs more tweaking. I’d probably just build a mostly stock AA964 in your shoes with the following mods. Maybe its just a combo of a lot of factors, tube brand, etc. But might it raise the clipping threshold of the PI, so that the "ratty" Oct 13, 2021 · Keeping it without the reverb makes way too high gain. A note up front--I don't like the sound of this conversion in a Princeton Reverb. The reverb version has an extra gain stage that makes quite a difference in the sound, and is a little more "gig friendly". Same for the Stokes mod. I'm using a Celestion Gold and some nice RCA 6V6s and it's an amazing little amp. Loud little sucker, with nice reverb and good Vibrate-Oh! No roach. Fab cleans though. One of my fave combos with a Princeton Reverb is a JBL 10". The voltages I measured are: GEMTONE Ruby Tube Modified Princeton TweedClass A 5 Watt 3 preamp settings low, med, high gainMercury Magnetic Transformers. 022uF. These mods work wonders to increase clarity and clean headroom, increasing the overall output of the amplifier with more depth and added transience. I personally love the Cathodyne PI, don't particularly like what the Paul C mod does to it. c. 001 cap to the reverb out. Sortie : Type Deluxe Reverb The Stokes mod doesn't kill all those little OTs, but the risk is great enough that Stokes no longer recommends this mod without up-sizing the OT. 3-Way NFB. The reverb function sounds and behaves differently between “identical” vintage amps. some people say this mod ADDS gain, but it really adds headroom. Kind of a rarity in a such a small, low wattage amp. Schematics show the Princeton Reverb has a 2K7 feedback resistor, but the 5F11 Vibrolux and brownface Princeton have a 56k resistor. Speaker is a Fender/Eminence OEM The 2M2 resistor is hooked to the B+ supply to supply the bias voltage. Sounds really great but in a live situation he would need it to break up later. If you do the Stokes mod, the point shown above is on a different tap of the power supply than if the amp were stock. The only reason Fender didn't do it was probably becasue they didn't want the PR to compete so much with the Deluxe Reverb as a "one channel Deluxe" Why would a guitar player upgrade to the DR if the PR had that John Stokes came up with this mod to get a little more volume out of Fender Princetons and Princeton Reverbs by raising the plate voltage on the split load phase inverter. OD Tone was horrible, so I reversed the mod. /Ampeg mod. The so-called Stokes' mod One of Fender's most classic amplifiers remains a favorite to this day and the Princeton Reverb Reissue is perhaps the most successful of the reissue series. Th If your intent is to play clean then ignore all the “too loud for home” comments - that’s nonsense when the Princeton is running clean (at say 2-3 on the volume) Princeton running like that with a bit of reverb and that beautiful bias trem is one of my favourite sounds anywhere ever. ) Mar 27, 2017 · (You can find these mods discussed, but it's often one guy asking about a mod and two other guys saying 'worked great' and 'didn't make much difference'. Suggested Modifications. 3 Transfo Mercury magnetics. Different animals. pdf (225. What you're really doing is returning the PI to the original brown Princeton spec. Th May 3, 2009 · Stokes mod. To echo others here - I built my Hoffman Princeton Reverb using a Deluxe Reverb OT and I can't even imagine what it would be like any louder. I gig occasionally with a quiet drummer, but record a lot. 7K cathode resistor at the first stage (10-15uf bypass cap)? Whether they get you the tone you want is another matter, but I'd try these quick, simple changes first before ripping out out your PI & vibrato. - Power tube Screen grids and grid stoppers - stokes mod (PI on unused node) Mar 2, 2023 · Around 3-4 min mark, he mentions Paul Rivera mods were done to the amp. If you replace the V3 12AT7 reverb driver with a 12AU7, you will reduce the effect of the reverb and it will be much easier to control with the reverb knob. I see a 2700 resistor (NFB) and a 47 resistor (NFB tail) resistor for the princeton reverb aa1164 micro (Rob Robinette design). There's the option of adding a presence control at the same time. Old style foot switch included Notable Changes:- Weber 12F150T, 50w Speaker for more clean headroom- the "death cap Hoffman Amplifiers Tube Amp Forum, Princeton Reverb AA1164 issue * Two mods relative to stock: I used the Stokes Mod for a more balanced PI, and added a 1m dwell Dec 3, 2023 · Don't mean to be cocky, but when a 12" speaker is in a Princeton Reverb, IT IS NOT A PRINCETON REVERB. Feb 22, 2019 · Which you would expect more headroom with. 5W, it's not the ideal transformer but I think it can work an if I like the result I could buy a proper 10W Transformer, as Feb 10, 2018 · Many people assume - and believe - that higher plate voltage equals higher gain. I'd like to do two simple mods, but would welcome the advice of more experienced builders as to how the placement of the mods may effect noise. Tilt back legs so I can aim it better. That said, the Paul C mod is an exception: it doesn't apply to a 6G3 Deluxe but a Princeton Reverb; it and the Stokes mod (I get them confused) together are about altering supply voltage & bias method for a type of phase inverter (split load aka concertina aka cathodyne) not Jun 24, 2024 · Personally I think that a 12" PR, especially if it's had things like the Stokes mod and/or DR output transformer, it's treading on the toes of the DRRI. I've been reading up on the robrobinette site and plan to do a few of the mods, particularly the adjustable bias and the grid stopper on the phase inverter. The 5AR4 can handle it fine. 99 May 2, 2009 · So, I just brought my PRRI to my amp tech last night. Th Jun 9, 2007 · I don't think in terms of "named mods" because they're impossible to keep up with and the name is rarely informative. Randy Feb 23, 2021 · The Princeton Reverb seems like the perfect balance between complexity, power, and price. The Deluxe Reverb uses a lower OT primary impedance (6. so is the new larger PT necessary? also, I'm thinking to install a Deluxe OT. If you're willing to lose the tremolo, the tremolo tube stage can be used to build a long-tailed pair phase inverter. Oct 15, 2011 · HI, I'm Italian. By the way, I never changed the output transformer (although it may make a big difference) I believe you just need to run a 4 Ohm load instead of 8 Oct 3, 2024 · I see schematics/wiring diagram on how to add a 3 way switch to the NFB loop for a fender blackface amp. power supply - Replacement of the Output Transformer with an ‘Allen TO20’ - Replacement of the Power Transformer with a Tube Amp Doctor (TAD) 125P1B (90mA) The Princeton Reverb developed out of the original Fender Princeton amp which was also known as the Student model. Totally agree with you. Out of the box these amps have are duller and less lively soun Mods for the Vox Handwired Series Amps; Mods for Fender 57' Tweed Champ Re-issue; Mods for Fender Handwired 64' Deluxe Reverb; Mods for Fender Hand Wired Princeton Reverb; Bias mods for Fixed Bias Amps; Mods and Mod Kits for Fender Deluxe Reverb Reissue Amps (PCB) Mods and Mod Kits for Fender 57' Tweed Deluxe; Mods for the Fender Pro Junior Like New in box with all accessories Fender Princeton 65 RI with the following spec:I bought the amp brand new. Phase inverter distortion on a Princeton Reverb sounds just like blocking distortion – “blatty”. Dec 10, 2024 · My vintage princeton sounded great, 5751 preamp v1, adjustable bias pot, Stokes mod , Paul C mod , and a 90s NOS Eminence Legend speaker. I have tried the above mods with the same results. Mods Ground switch now operates as standby switch Fender tilt back legs Celestion Vintage 30 12" Speaker Amp doesn't have a push/pull volume boost knob Allen to 26 Output Transformer I-23093 Jan 31, 2008 · A good idea for a non-reverb Princeton which is short of gain to begin with. It sounds fantastic now. We never use this anyway. Mar 23, 2006 · So I think it is reasonable to assume you can get 18W from a Princeton or Princeton Reverb with matched JJ 6V6 power tubes, Paul C and Stokes mods to the phase inverter and 120V input voltage. Oct 2, 2014 · I recently built Princeton Reverb with few minor tweaks. I have a 65 RI and the other day at guitar center I came across one with a 12” speaker and thought it sounded really good but IMO did not sound like a classic Princeton, in fact it sounded a lot closer to the deluxe reverb that was right next to it. It is apparent all the time but most noticeable with the volume down (or off), Speed on 10 and Intensity on zero (or off). I think the princeton reverb is perfect the way it is. Aug 2, 2019 #5 ; There was no such thing as a 'bedroom amp' back when the Princeton Reverb was made Jan 17, 2007 · Yes, the Sig series is Ted's take on a basic mass-produced guitar amp speaker. It changes the PI Just finished this one today. And by anywhere I mean at home. Original price. the “bordeaux reserve” one, ooh-la-la. You'll need to reduce the first 18k dropping resistor to about 12k to keep the voltages consistent if you go this far. Please note that the circuit below shows a Princeton-Reverb, but the change in a Princeton will be likewise. So basically Rivera-era Princeton Reverb II? I think the push/pulls are tone stack mods and master volume mod is pre-PI. Th My recollection is that the Stokes Mod & the Paul C mod have fallen into disuse. $200 price drop. Th Oct 16, 2008 · But I really like the increased headroom that the Stokes mod gave. The mod creates a fixed bias on the phase inverter grid by creating a voltage divider with the 2. Jan 27, 2010 · It received a bias pot, a Stokes mod on the power supply and a couple of other minor tweaks. Other Mods. The Blues are supposed to mimick the old Astrons to a T. Based on my very good experience with John McIntyre's great POW mod, I would re-build any Princeton I got my hands on to the POW circuit but, at the very least, copy the POW phase inverter and you'll have a real amp on your Apr 23, 2009 · I have had the same problem with a 70's Princeton Reverb that had previously been modded to blackface specs but still had way huge bass. Nov 19, 2008 · Here's what I did, V1A cathode cap is 10uf, stokes mod, blueprint PI, 40/20/20/20 filter cap, Allen T022 OT, replaced 1K power resistor with choke. '68 Custom Princeton Reverb w/Alessandro Hand-wired Mod. MMB has a 12" speaker. Logical schematics . So heres what I did: I added a . morning glory>DRV>SSBS mini. Aug 24, 2005 · So I think it is reasonable to assume you can get 18W from a Princeton or Princeton Reverb with matched JJ 6V6 power tubes, Paul C and Stokes mods to the phase inverter and 120V input voltage. The build went smoothly, and I've really enjoyed the amp. The Fender 65’ Princeton Reverb and 68’ Custom Princeton Reverb Reverb are Fender’s modern PCB board versions of the classic amp. 3 meg and 470k/Reverb pot. 10" replaced with 70's Fender Pyle. Our complete mod kit comes with full color instructions and allows you to change the power supply of the phase inverter to the unused anode in the power filtering circuit. When I turned on the amp there was a really bad distortion that I couldn't trace. Mar 22, 2017 · You could also drill an extra switch hole in the back panel if you want to retain the external speaker option. May 8, 2003 · For the Deluxe Reverb and Princeton Reverb, the big changes are phase inverter type, feedback loop, output transformer (OT) primary impedance and speaker size. I don't think a Princeton Reverb with a 12 would change my opinion much Been there and done that with more than a few Princeton amps over the years as the 12 inch speaker mod is pretty common. As for fuzz, I think he said "some cheap fuzz tone" and his pedalboard shows little big muff. Original price $1,799. jpg (525. Reduced the reverb tube to a 12AV7. Will the Stokes mod and a deluxe reverb pt/ot give me that extra bit of volume needed? Jan 5, 2020 · I will stick with my Deluxe Reverb, but I do get the love for the Princeton Reverb. The Stokes mod helps in these situations. Feb 25, 2011 · I have a Deluxe Reverb Reissue and I was looking at downsizing to a SF Princeton Reverb since it is 10 pounds lighter and 7 less watts. I have never tried this but from what I've read, not sure I want to put this in the amp so I'm leaving it stock as is for now. ; 6L6 output tubes; output transformer. 20 watts, great Jan 7, 2008 · Princeton/Princeton Reverb I don't think a Princeton is much of an amp. I built a TAD version, with bigger transformers, Deluxe spec OT, Stokes mod etc, and really it lost some of the charm and cheekiness of a "proper" Princeton, despite being a perfectly good amp- it was a bit "polite". Tremolo Depth Mod. I assume I add the switch in place of the 2700 resistor and Fender Tone Master Princeton Reverb 12-Watt 1x10" Digital Guitar Combo 2022 - Present - Black Rare fender excelsior pawn shop series amp with mods up for grabs. Stokes Mod. Sonic goodness 'ala Mike Campbell! Hard to beat. 85 kB - downloaded 300 times. There was in ancient times some concern about the v's getting dumped on the PI, but if you look at the v's on the 12at7 in a Fender reverb, and know that a 12ax7 will live in there too the PR v's are small potatoes. An MMB cabinet almost exactly the same size as a Princeton Reverb cabinet. I tried the Stokes mod in my SF Princeton. g. My opinion of the split load phase splitter operation is just that. Princeton Reverb style 1x12 combo amplifierHand wired by me. Reduced the bass cap in the tone stack to . I understand that 2 amps that came off the line right next to each other could end up sounding somewhat different, even new let alone 30-50 years later. The Stokes mod – increases voltage to the phase inverter. Puissance (Power) : 15wLampes de préamp (preamp tubes) : 3x12ax7, 2x12at7Lampes de puissance (power amp tubes) : 2x6v6 Entrée (Input) : 1x instrument jack mono 1/4"Hps : 1x12"Celestion GoldContrôles (pot) : 1x Volume, 1x Treble, 1x Bass, 1x Reverb, 1x Speed, 1x IntensityFootswitch : OuiBoucl This 2016 '65 Reissue Princeton Reverb combo was fully re-built and wired point-to-point by Fromel Electronics with premium components. Puissance (Power) : 15wLampes de préamp (preamp tubes) : 3x12ax7, 2x12at7Lampes de puissance (power amp tubes) : 2x6v6 Entrée (Input) : 1x instrument jack mono 1/4"Hps : 1x12"Celestion GoldContrôles (pot) : 1x Volume, 1x Treble, 1x Bass, 1x Reverb, 1x Speed, 1x IntensityFootswitch : OuiBoucl Apr 11, 2021 · This also explains why the Princeton Reverb has only 12 watts of power compared to the Deluxe Reverb's 22-watt output, although both use 6V6 power tubes. 65 kB, 2603x1943 - viewed 797 times. Jun 13, 2011 · Great pickup Tomo! I love my early '68 Princeton Reverb. New Price $1,699 Nov 11, 2010 · Well, my Princeton Reverb is 20 watts. For my own consumption. I used a Mojo kit, which has a few tweaks: Fixed bias phase inverter (aka, Paul C mod) Stokes mod 40uF first-stage filter I also used 4. Fender '68 Custom Princeton Reverb-Amp 12-Watt 1x10" Guitar Combo 2013 - Present - Black. Sep 24, 2023 · I play out in jam sessions and have found that my 65 PRRI could use a little more volume. Have you tried a 12AT7 or 5751 in V1, or a 12AX7 with a 2. Tank reverb TAD. There's plenty of room for it. Turned out to be a bad reverb-drive tube, so totally unrelated to the Stokes mod. Those mods do nothing to the PT. It already had a Stokes mod which was a big improvement, and the speaker was a Jensen C12-N. Layout . Original blackface circuit. Allen PT, Dr Z OT. Dec 9, 2015 · Just as an update: based on Rob’s suggested Princeton Reverb mods I added the grid stopper to the PI, and grid stoppers and screen resistors to the power tubes. The 470K resistor to ground right before V3a serves two functions: grid return for V3a and, more importantly, second half of voltage divider in Princeton Reverb formed by 3. I loaned the Princeton to a friend (Danny Kalb formerly of the Blues Project). I am most seriously considering the Princeton Reverb AA1164 (though a 5f6a and RobRobinette's 6v6 Blackvibe are in the running still). Th Aug 25, 2021 · Others elsewhere have suggested employing the Stokes mod, which moves the PI plate to the unused C node. It has barely been played at homeNo scratches, wears or other cosmetic issuesOriginal 10” Jensen C10r speakerIt has been modded by a professional (Fromel supreme mod kit):1. That is not the case in this design. But, some say the BF is so rich while the SF is harsh or May 13, 2011 · I'm considering to do Stokes mod for my Princeton (non reverb) It's BF and has a 71' SF PT and an original OT. If I want occasional dirt, a good OD pedal will suffice. We all know that speakers change their tonal character during age. 8k/1. I pick up the PI and the stage before it and connect both of them to the unused power supply node. It's my secret weapon for playing small clubs in Boston, singer songwriter gigs, etc. BTW I don't have the stokes mod installed. $1,599. Th 4 5 0 Fender Princeton Reverb Brit Green Mod 2024 - Brit Green Tolex. Pensé selon les specs d'époque + mods-Stokes Mod-Rick E mods-Paul C mod-Intensité du Tremolo augmentée. Paul C Mod. The attack, dynamics, EQ the feel is substantially different from a Deluxe Reverb for numerous reasons. Dr. Speaker is an EV Force 12. Other than that the only thing on the circuit board worth doing (IMO) is the Stokes mod, which throws a little more voltage at the PI. Reverb is an important character with vintage amps, yet so individual and mysterious. Replaced the 10" with a 12" Jensen C12N. It also changes the phase inverter tube from a cathode bias to a fixed bias, known as the "Paul C. I would not bother with DC heaters. I built one that way from a TAD kit, but it lacked something. David Reactions: mgreene and LudwigvonBirk Oct 19, 2024 · I personally like the Stokes Mod that people seem to disfavor these days. Treble bypass cap. Get one of Chris's builds, and you arguably get a better amp than Fender's 64. Jun 14, 2020 · It seems to me that the Princeton Reverb is especially suited for mods of various sorts. Princeton Reverb with reverb and tremolo deleted (three preamp gain stages so very different than blackface Princeton) Princeton Reverb Micro with reverb and tremolo deleted (1 watt 12AU7 true push-pull power tube) Princeton Reverb with One of Fender's most classic amplifiers remains a favorite to this day and the Princeton Reverb Reissue is perhaps the most successful of the reissue series. Mar 20, 2021 · stokes mod could be useful if you want the clipping/breakup a little later. Billm has written quite a bit about these mods on this forum, and I did the same sort of changes to mine. To be honest I prefer Reissue to Silverface The only thing is that I do not like turning up the volume more than "6" the sound becomes less defined. A Princeton Reverb already has a warmer, more mid-rangy tone than a Deluxe so the 10" speaker doesn't hold it back in my opinion. There is a modification called the “Stokes Mod” that just moves the voltage of the phase inverter one stage higher, by moving one wire. Same basket and cone as the 12L but the magnet weight (and mass) is less, and the power handling is limited to 150 or 200 watts AES. The Weber OT rocks. He's even adding a "mid" knob mod to it. " mod. 5k to ground. it raises the clipping point of the phase inverter offering a little more headroom over all. After digging around a little I noted that the Mojotone schematic has more voltage going to the phase inverter (aka Stokes mod). Aug 11, 2014 · I would suggest the order of mods to be: Speaker/cab; Stokes mod to PI; revoicing tone stack or playing with bypass caps, coupling cap,etc. So when the Princeton is cranked, it tends to sound a bit browner than the Deluxe Reverb, with more breakup in the lower frequencies and a mid-focused tone. So I removed the Stokes and some other things to get back close to original. Originally $1,799, now $1,699 ($100 price drop) $1,799 Original price. That seems to have solved my oscillation issue. A Princeton Reverb has a relatively direct lineage to tweed amps of the late '50s, even large tweeds like the Pro, Super, Bandmaster and low power Twin. Out of the box these amps have are duller and less lively soun Oct 16, 2010 · *Very portable (my other amp is a Super Reverb, this feels like a lunch box in comparison) *Tons of head room, unlike it's sister amp, the Princeton Reverb model, this is clean all the way to 8, with only a slight growl after that. Then I built a Princeton Reverb with a loud 12" speaker, TO20 OT, beefed up the first stage of filtering and added the Stokes mod, all for an amp that could handle a band situation. As it is the PR is a pretty good garage/studio amp but mods to Deluxify it makes it lose something. These mods have been developed tested over period of many years with rave reviews from our customers. Based on AA1164 Blackface circuit with reverb and tremoloSee the video included in this listing for a demo of this amp. Apr 20, 2004 · The Princeton (non-reverb) is totally unlike the Princeton Reverb. Nov 19, 2008 · I did the stokes mod and it got much more pep, overdrive had more harmonics and grind. Comment This mod is commonly known as the "Stokes mod". I just built the sweetest lil Tweed Deluxe using the Sozo Blue molded caps. May 14, 2011 · But I know that changing the transformers, doing the Stokes mod, replacing the filter caps, doubling the first stage capacitance and running 6L6s will make the amp considerably louder. I do a modified Stokes mod. 45A each, so that is . As most of you know, this circuit comes with a non-adjustable bias, controlled by a single 22K resistor, which I assume would yield a plate current near 20mA. Jan 11, 2012 · Just curious about those of you who have used or owned both a vintage blackface Princeton Reverb and a silverface Princeton Reverb. One of Fender's most classic amplifiers remains a favorite to this day and the Princeton Reverb Reissue is perhaps the most successful of the reissue series. Alimentation Princeton. To better understand the Princeton Reverb you need to keep in mind it wasn't until the late '60s that musicians cranked their amps. Apr 14, 2012 · A Princeton Reverb cabinet is almost exactly the same size as a tweed Deluxe. 2M Bias resistor and 1M Grid Leak. I think it's called the Stokes Mod,,, now has the same phase inverter as a Deluxe Reverb. 6kΩ vs 8kΩ) to squeeze a few more watts out of what is essentially the same output circuit: 2x 6V6's with same supply voltage. Here's a Princeton Reverb's tone stack: Aug 28, 2010 · A Princeton Reverb is a unique circuit among '60s and '70s Fenders. After awhile I realized that my amp didn't have the same breakup characteristics that you'd normally associate with a Princeton Reverb. More NFB might help, but it would work against the Stokes mod. 7uF bypass caps in most locations, in place of the stock 25uF. The mod entailed adding a new baffle fitted with a 90-Watt Celestion Creamback and a Mercury Magnetics Deluxe output transformer for 18-20-Watts operation which May 31, 2018 · If you replaced the 3M3/10pf reverb splitter in the Princeton Reverb with a jumper you would be on your way towards building one of Ken Fischer's pre-Trainwreck prototypes according to some reports. I'll report back. Cable HP et cable reverb TAD . I tried both taps. Quite similar to a Deluxe Reverb but a little more mid and the cleans are very haunting especially with the Sep 8, 2018 · - Stokes Mod to give the phase invertor stage a full 300v d. John Gaynor told me that they are hand made in his shop one at a time. Price Drop. ) Modified Princeton Reverb Schematic Dual Bias. The two mods I'm considering 1) Raw Control. ) I wanted my PR as close to '65 stock as possible, so all the mods had to allow a stock-sound option, and thus I didn't consider mods like a bigger PT, OT, or speaker. It's one pretty potent and toneful amp as it is; and running through a 2 x 12 cab. Whether or not this particular Princeton was modded by Smith himself is open to conjecture, but all component values, transformers, and the all-important 12" JBL speaker are consistent with the Princeton Reverb AA1164 Modified << < (3/10) > >> sluckey: 2012, 07:46:32 am ---The PaulC mod was often done in conjunction with the Stokes mod. This is one of the most "didn't like it so I reversed it" mods for the Princeton Reverb. $100 price drop. 9A. The power tubes aren't really driven hard enough. I just never bonded with them much though I do dig the 6G2 Princeton. Replace the 12AT7 reverb driver with 12AU7 – Better reverb control. Up for sale, a 1978 Fender Princeton Reverb, modified from stock with Randall Smith's Mesa Boogie mods. I also moved the Mid knob over to reverb pedal spot (didn’t have that hooked up anyway - reverb is always on). Lay an MMB on its side, same size as a Princeton Reverb. Faceplate repro. Weber 6A14HP 30w 1x12" Princeton Reverb w Master Vol Mod, Rectifier Upgrade, Cap Upgrades, Selectable Mid Frequency Tweak, Build Notes, Schematics and Spare Tubes Included Used – Excellent Price $1,199. May 4, 2011 #5 ; 3 Apr 10, 2012 · I tried the Stokes on my PR, but I had done too many mods at once. I kind of feel like part of the charm of a Princeton was the 10” speaker. This amp used Fender's Blackface cabinet style up until 1967 when a switch was made to the Silverface s Cool! I've had a similar journey. Jan 14, 2007 · A Princeton reverb is on my hit list as well. It's its own thing. IDK. Th Oct 15, 2004 · Princeton Reverb take . This means more feedback is applied in the Princeton, which is one of the reasons it runs cleaner. 25 Watt Tone Tubby speakerThis Princeton Tweed 5F2 by Gemtone is Big Tone in a small package. A common one that I like is to use a Deluxe Reverb-sized output transformer. May 4, 2011 · My 1965 Princeton Reverb with a Weber 10F150T 25watt light dope speaker is screamin' loud. Our mods take the PRRI back to the glory days of the black panel era and adds a couple of the most famous mods done to this amp over time. I had the stokes mod in it before but changed it back to stock. 2A the total draw is 3A. ayprg leanbxf nzmjf ybnccao idnn ivsi bctxum xgoixr qragu drdce