I've got a nice SFSR, a '68 or early '69 I think, wired with very thin, 22 or 24 gauge hookup wire. The only reference I've been able to find on the web is this quote from

Fender’s sudden transition from cloth wire to thick PVC wire (in pastel greens, white & yellows) is well documented by anyone who has ever pulled a chassis. Sometime in late 1968, the cloth covered wire went away. However, several amps from the late ‘60s (non-reverb Princeton, Vibrolux Reverb, Bandmaster Reverb, and...

Hi everybody,
I wouldn't like to start an other ideological and sterile very long tread :wink: , but if you have experience with those, i' d like to have your advice about 12ax7 current production tubes (jj tesla, mullard new sensor etc)
I know some (most ?) people only swear by NOS tubes, just wondering if it's justified or not for my project.
To be clear, I'm thinking about doing an alembic f2 b clone, so no power tubes, rectifier etc...
Thanks guys (and girls ?)
Olivier

hi, just wondered if anyone could recommend me a build, im wanting a fender twin type sound but at low wattage (bedroom recording levels) so i think 5 watts is about right.

Although this would be my first amp project, ive been building pedals for a while, and im well aware of the hazards involved :shock:

im probably aiming a bit high for a first build, but i dont mind a challenge...

any advice appreciated

Is this possible???

I have 2 singleended EL84 amps .... is it possible to connect them in push pull configuration...(with phase iverter before it ,and with two (original ) output transformers connected together to bring out more power??? :scratch:

Is this possible to do?

Do You have schematic or gut shoots of this unit???
Is it simillar to fender reverb unit???

And it cranks. I put an Eminence Ragin Cajun in it and some good tubes...and gigged it at church last Sunday. Usually I play a '69 drip edge Super Reverb, and the rhythm player looked over in mid set and said, We're all a bit loud this morning!
Great tones in a small package. Definitely this year's sleeper. But you really need to get rid of the crappy chinese thimble-sized magnet speaker. Oh, and I put a standby switch in mine.
Architectually, the amp is solid state front end with digital...

Hi all,
I have a sweet 1960 Princeton Tweed that currently has a Weber in it. I have two Weber 8 speakers, one is the alnico high dollar one, and the other is the popular replacement ceramic model. Both are 3.8 ohms.
I like the ceramic model better, but I am not that impressed with Webers in general. I've tried to like them, I just don't. I also have a '66 Deluxe Reverb that I put the suggested Weber in and I ended up with a generic Fender brand speaker, an Eminence or Utah, I think, that kills...

Not a stompbox - maybe better off here? Its more hifi and less splashy than a Fender. Also whines a little - don't know why.

The myths told us this Plexi has an extra gain stage on the preamp, maybe like a Mastevolume... have anyone seen the schemo?

Has anybody tried to lower the 3.3M resistor in the reverb channel to increase the gain? I want to know how does it sound...

I tried this in a different amp, with a similar channel, but this resistor can't be less than 1M because, when I turn Vol, Bass & Master to 10, starts to oscillate with hum (eeeeeeeeeer I don't have the 3rd pin to ground...), buyt it does sound like a JCM800!

Here some orange guts:

ATTENTION: HUGE FILES !!!

analogguru

Hi, I don’t know if it’s the right place to post this, but :

I am thinking about doing a small tube “clean” preamp just to colour a little the clean guitar sounds before my EMU card input. I’ve (briefly) tried the behringer mic 200 preamp but wasn’t convinced by the sound, plus I don’t need the bad limiter and the rest of it’s features.
I know there are a lot of negative comments about starved plate designs (it’s only marketing, sound like crap, etc…) and that tubes are supposed to work on...

hello there, I recently acquired this little thing butt it needs some work. Has anybody seen or have a schematic for this or any of this series for that matter?? any info would be really appreciated. Thanks, peace.

Hello

New guy here. Wasn't sure where to post this but thought since it was very amp related might as well start here. Curious what type of approach one would take trying to emulate the sound and physical operation of a tube amp circuit for use in a pedal? Although I haven't built any I've always been intrigued by the Run Off Groove website's various pedal adaptations of amps. Not really looking to capture tube sound in a pedal. Just interested in how one would approach the process.

Thanks,...

Hey all,

Just unpacked an order from Mouser last night. I had order a new 3 prong power cord for an old amp that I'm updating .

I didn't get a chance to plug it in and verify what was what - but it has the oddest color configuration - brown, blue and green (with a green stripe).

I'll multimeter the thing to verify what's what - but I just wondered if anyone else has had this experience ?

Dan

Just curious. My nephew bought one at a pawn shop for $180.
Never been a crate fan but it sounds wonderfull! Kind of wondering what they did right with this one?!

Has 4 Sovtek Hot Rods 6V6 GT power tubes. The Hot Rods must not have been anything special... all black kind of neat looking though.

I'm building a 5E3 Deluxe and am using the Mercury PT with the unloaded outputs of 380-380. I'm wondering what is the best method of dropping the B+ voltage down to about 350 or 330 for experimentation. I would like to even possibly wire in a switch to go from standard B+ to a lower one.

-=Karl=-

I can't find a 25K reverse audio taper pot for the intensity control of a Vibro Champ so would a 25K linear taper pot work fine?

Just retweeded - 1500 EUR

I'm making a replica of a tweed deluxe and have access to many of these cornell dubilier caps. Does anyone know the composition of these caps and are they the same as or similar to the old Astron caps found in the original tweeds? I also have access to paper and oil caps but my research has concluded that these Astron caps used in the mid to late 50s were not paper and oil composition.

I'm wondering in what direction do coupling caps usually drift in vintage amps. I found a NOS 0.0005uf Astrom capacitor identical to what is found in the tone circuit of a vintage Tweed Deluxe but it has drifted to read at 0.001uf. I'm wondering if the caps in actual tweed deluxe amps have also drifted in this manner and if I should try to incorporate it into my deluxe replica. Is this a contributer to mojo or is it just a waste of time?

This is the amp I referenced here . I semi-traced, semi-copied the schematic that came with it (it's tiny and hard to see clearly) and this is what I have.

For those out there that know tube amps, can this be turned into the Bad Cat mini cat or any other small tube practice amp? I would prefer to use either 1 or 2 EL84s.

Thanks!

FROM GLASS AUDIO, 1992....

CLICK HERE

Hi all, I have recently been given a small tube amp,

I'd like to make a 1-5watt guitar amp from it, but how can I determine if its useful or not! ?