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A little history first...
When Eden first released the 2 channel WT-1205 bass amp, a lot of users complained that there was not enough gain available in the preamp stage, particularly if they were using a passive bass. Eden's explanation was that they held back preamp gain so that people using high output basses would not damage their speakers when the dynamic bass and treble boosts and/or Turbo Boost (+6 dB) functions were also engaged. Essentially this strategy amounts to 'Idiot proofing' to avoid unnecessary speaker warranty claims. After numerous complaints from users who felt they were qualified to set the proper gain structure, Eden subsequently offered several 'gain increase mods' to address their concerns.
My amplifier has received all of the 'gain mods' offered by Eden but I would still like to have more gain available in the preamp stage. In my case I am unable to get the preamp clip light to clip unless I turn the gain control to the maximum setting and hit my strings VERY hard. Consequently, I am unable to find the sweet spot and maximize signal to noise.
Upon examining the attached WT-1205 schematics I noticed that there are gain trim pots (VR101 on upper board, VR1 on lower board) inside the amp. I was wondering if I could simply adjust these pots to ramp up the available gain in the preamp or will I also need to alter the value of the resistors (R185, R136, R138 on upper board, R235, R236, R238 on lower board)?
I have also attached the spec sheet for the THAT4301 dynamic processor in case it will help someone answer my question.
Eden has been unwilling to provide any assistance other than to tell me that the 'gain mods' should have addressed my issue. I do not agree with this assessment and several other WT-1205 owners I have spoken with share my opinion.
Thanks in advance for your help.
Cheers,
Duff2
When Eden first released the 2 channel WT-1205 bass amp, a lot of users complained that there was not enough gain available in the preamp stage, particularly if they were using a passive bass. Eden's explanation was that they held back preamp gain so that people using high output basses would not damage their speakers when the dynamic bass and treble boosts and/or Turbo Boost (+6 dB) functions were also engaged. Essentially this strategy amounts to 'Idiot proofing' to avoid unnecessary speaker warranty claims. After numerous complaints from users who felt they were qualified to set the proper gain structure, Eden subsequently offered several 'gain increase mods' to address their concerns.
My amplifier has received all of the 'gain mods' offered by Eden but I would still like to have more gain available in the preamp stage. In my case I am unable to get the preamp clip light to clip unless I turn the gain control to the maximum setting and hit my strings VERY hard. Consequently, I am unable to find the sweet spot and maximize signal to noise.
Upon examining the attached WT-1205 schematics I noticed that there are gain trim pots (VR101 on upper board, VR1 on lower board) inside the amp. I was wondering if I could simply adjust these pots to ramp up the available gain in the preamp or will I also need to alter the value of the resistors (R185, R136, R138 on upper board, R235, R236, R238 on lower board)?
I have also attached the spec sheet for the THAT4301 dynamic processor in case it will help someone answer my question.
Eden has been unwilling to provide any assistance other than to tell me that the 'gain mods' should have addressed my issue. I do not agree with this assessment and several other WT-1205 owners I have spoken with share my opinion.
Thanks in advance for your help.
Cheers,
Duff2
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