Author Topic: Vintage 1974 RB90 4x10 schematic request!  (Read 1500 times)

Offline czech-ne-2

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Vintage 1974 RB90 4x10 schematic request!
« on: June 08, 2016, 05:17:08 AM »
Hi folks, just registered here to see if anybody had a schematic for the 70's RB90 amp. Its similar to the Commander series of amps from that era such as the RB120 / RB300 /RG120 / RG300.
My amp is working and has a great tremolo but I'm going to re-cap all the electrolytics. Also there has been some monkying around sometime in the last 45 years by various 'techs' as some components are sort of just hacked in. I'd like to restore it to its original condition.
Any help would be greatly appreciated. I havent contacted tech support to see if there is a schematic archive available but thought I would try here first.









http://www2.randallamplifiers.com/images/stories/manuals/CommanderGuitar&BassAmps-OwnersManual.pdf


« Last Edit: June 08, 2016, 05:24:18 AM by czech-ne-2 »

Offline czech-ne-2

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Re: Vintage 1974 RB90 4x10 schematic request!
« Reply #1 on: June 13, 2016, 11:35:38 AM »