Revv Owner’s Manual - 13
Bias Test Points
This amplifier is designed to allow the user to set the bias of the power
tubes without removing the chassis from the head shell.
Each pair of power tubes needs to be set according to the tubes being
used.
Power Tube Fault Fuses
The power tubes are fused in pairs. Should a power tube fail, the fuse will
blow & take the pair of power tubes out of service. This has the benefit
of protecting the amplifier, & also allows for continued playability, so as to
allow the user to finish the gig on the remaining pair. The volume & tone
will change but the show will go on.
Note: Should the amp be run with 2 power tubes removed from service
(bad or blown fuse), in order to achieve a tone more consistent with
normal 4 tube operation the amp should be run with an impedance
setting of half the speaker cabinet rating. For example, if the speaker
cabinet is 8 ohms, set the amplifier to 4 ohms, & if the speaker cabinet is
16 ohms, set the amplifier to 8 ohms.
3.2
