Eden WT-800 input problem

Help Support GroupDIY:

saint gillis

Well-known member
Joined
Nov 4, 2012
Messages
651
Location
Brussels - Belgium
Hello,
I'm working on an Eden World Tour 800 bass amplifier. The power amps are good, but the input stage is too low, the gain pot at mid-position gives barely +2dB.

I did a full recap and pot cleaning on the preamp board because the pots were scratchy (also on the EQ section that is not shown here). And I think the preamp had a lot more gain before I worked on it.

Here's the schematic attached. To bypass the compressor/limiter, a switch grounds the emitter of Q4.
 

Attachments

  • eden_wt500_wt600_wt800_preamp.jpg
    eden_wt500_wt600_wt800_preamp.jpg
    154.1 KB · Views: 11
Top