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Hi all

My silverface twin reverb (witha  blackface circuit mod) is in great shape, just got overhauled and all, but needs a new set of speakers. What does anyone recommend or recommend against? I don't have much experience with this in general.

Will not be played with a guitar much or at all, mostly rhodes, and some nord electro as well.

Apologies if this is an old or boring topiuc - throw me in the right direction if that's the case. I couldn't find much and thought maybe this would be an interesting discussion for others as well.

Cheers!

-Danji

Hello folks -

Forgive my vast ignorance on this subject. I've been playing and gigging my 1974 stage 88 since I got it in November, and after unpacking and setting up after my last gig, I noticed the Ab key below middle C has begun to make quite a loud knocking sound when played. The tine is still hit, and the knock is not amplified - so it still sounds fine, but I can feel the key hitting against I assume the metal or wood beneath. The contact seems to be occurring relatively far out (towards the player, not towards the tine).

So, looking at the Action diagram of the manual, might I be correct in assuming that somehow the guide pin felt (#1 on the diagram) on this key has gotten dislodged? Meaning I have to fix it by taking the whole keyboard out, yes? Can I improvise some felt or do I have to track down a real vintage old one, if I can't find the original lodged somewhere?

Any guidance/thoughts/ideas would be greatly appreciated.

Many thanks in advance,

-Danji

Aloha!

I've been having a blast with my new 1974 88, and am now looking for an amp to do it justice. Came across a Twin Reverb that's been tweaked around a bit, and knowing next to nothing about amp circuitry, speakers, and tubes, I was wondering how this thing's modifications might effect the sound. Good? Bad? The price is sure right - 650.

Here's his description of the amp:

The amp was originally built sometime after 1972. It has a sliver nameplate with blue block letters "TWIN REVERB". The cabinet has casters, tilt legs, and a top handle. The tolex is in fair shape, clean but with some nicks, a bit of rust here and there. It is solid, with no water damage. I have a vinyl cover for it.

The power supply, choke, and output transformers are original and in good condition.

All resistors, capacitors, and diodes have been replaced with high-quality components. Resistors all 5% carbon composition, up-sized where appropriate. Sprague electrolytic capacitors, Sprague orange drop and silver mica tone caps.

All pots have been replaced, and all the knobs are new. The power light even has a fancy purple lens.

The speakers are new – Pyle Drivers. The pre-amp and power output tubes have been tested and matched. The reverb springs are original and in good condition. A reverb/vibrato footswitch is included.

The circuit for this amp was originally the post-1972 Twin circuit – "100 WATTS RMS AMP W/REVERB AND VIBRATO" (CBS drawing # 010182). This included the push-pull Master Volume control, which has been retained. I have modified this circuit in several ways.

Circuit modifications:

- Common cathode circuits separated on pre-amp tubes
- Driver circuit changed to pre CBS "AB763" style with matched components
- Matched components in power output section
- Adjustable balanced bias supply added to power tube circuit
- Precision bias test resistors added to power tube circuits
- Diode added to power supply separating pre-amp and power amp

More information about these modifications can be found in Dan Torres, Inside Tube Amps, Sparpco Inc. San Mateo, 1995.

The idea of these modifications is to return the amp to the original pre CBS design and sound. It is solid, loud, and physically heavy. The solid state power supply makes the Twin sound somewhat sharp to some, and you do have to turn it up a bit to get the Fender tone. Fender typically used cheap components and the circuits could be pretty far off. The effect of matching everything in the output and biasing the tubes correctly is to make the amp more efficient and hence loud!



SO....what do you think? Any insight would be super helpful and appreciated!

Thanks in advance -

-Danji

Hello!
All psyched to get my first Rhodes. Was planning on getting a 73, but a seemingly mint Fender Rhodes Stage 88 from 1974 presented itself. Professional keyboardist owns it, and he got it from the original owner. Says its in perfect shape except for a finicky latch on the case. All components there.

Is $10 a key a reasonable deal? It seems that this is not a usual find in such great shape. Had planned to spend 600ish for a 73 in decent shape, but this is looking pretty appealing...

And then I'd just ask the over asked subjective question: Tremelo and Wah? I was thinking a solid ol' Cry Baby and the cute little Danelectro Tuna Melt - Opinions? Amp I unfortunately can't be in the market for yet, stereo isn't an essential factor right now.

This'll be gigging/some recording/college dorm piano usage.

Thanks in advance!

-Danji