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Solid State Guitar Amp Forum | DIY Guitar Amplifiers

Solid State Amplifiers => Schematics and Layouts => Topic started by: Axtman on April 12, 2025, 07:06:29 PM

Title: Randall RB100 bass amp schematic?
Post by: Axtman on April 12, 2025, 07:06:29 PM
Hello,

I am looking for a schematic for an early 90's Randall RB100 bass combo amplifier. This is the older version of the RB100, NOT the newer version with equalizer sliders.

Thanks!
Title: Re: Randall RB100 bass amp schematic?
Post by: J M Fahey on April 13, 2025, 06:28:24 AM
IF it is the real early version such as used by Ike and Tina Turner, not the later Pantera era, back in the day "everybody copied the Twin Reverb idea" so Guitar and Bass preamps were the same (clean, no distortion), only the Guitar one added Reverb and Tremolo.

So if you find the old Guitar one, it will help you.

I have them somewhere, in some old hard disk, haven´t seen them for many years.
Title: Re: Randall RB100 bass amp schematic?
Post by: Axtman on May 06, 2025, 05:31:34 PM
I ended up purchasing a PDF schematic from MusicParts.com.
Title: Re: Randall RB100 bass amp schematic?
Post by: J M Fahey on May 06, 2025, 05:53:44 PM
 :dbtu:  :dbtu:  :dbtu:

If at all possible upload a copy, it may help others.
Title: Re: Randall RB100 bass amp schematic?
Post by: joecool85 on May 12, 2025, 05:13:48 PM
Quote from: J M Fahey on May 06, 2025, 05:53:44 PM:dbtu:  :dbtu:  :dbtu:

If at all possible upload a copy, it may help others.

I've not bought anything from musicparts.com, but depending on their EULA you wouldn't want to do that.  While I do enjoy all the schematics, I want to try to make sure things posted here are legal.
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