| Sunn Coliseum Bass (amp)
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Recently acquired a Sunn Coliseum Bass (amp); silverfaced (pre `75). I knew another player with a later blackfaced model that just roars! Anybody have a manual/schematic for the pre `75 models? On-line schematics (Sunn Shack and elsewhere) seem to be the post-75 model, but they may both be the same design internally, since the amps seem to have identical controls.
The Concert Bass amps (pre/post `75) have somewhat different schematics, but the amps have different features as well. The silverfaced amps have a distortion & boost feature not found on the blackfaced models. | 
