thepraqtice
Member
- Joined
- Dec 4, 2012
- Messages
- 18
Hi GroupDIY,
Having a wee problem with my GSSL + Turbo/2xSSC/CRC mods. Wondering if anyone can help me narrow it down.
I fired it up and fed a stereo signal through it last night for the first time and was greeted with some really overkill clipping distortion that seems to get hotter with higher input volume and make-up gain settings. Really over-saturated and with loud clicks/clips. It's there when the compression is "in" and "out" and is very sensitive to low input signal levels.
On closer inspection the heavily distorted signal only seems to appear on the right channel. When I pan the input signal hard left, the signal coming through the left output sounds great and can handle normal line level signal. But the heavily distorted signal is present on the right channel output.
When I pan the signal hard right, the right output sounds/compresses great, handles normal signal level and nothing comes through the left channel as expected.
When I pan to the centre the left channel in/out seems to function as normal but I get the same distorted clipping signal on the right channel.
I tried using completely different xlr cables and the problem is still there on the same side.
I swapped the left/right input/output opamps, vca opamps, main vca's and sidechain vca's (not all at the same time) to see if the distorted signal swapped sides, but it always stays on the right channel.
The distortion is present in both GSSL or Turbo modes and at all settings on SSC rotary switch when compression is in or out.
VCA's are THAT 2180B's with pin 4 snipped, trimmer resistors for distortion are still present.
I have a suspicion it might be ground issue as I've seen this mentioned in relation to other distortion problems in other threads but I might be way off. All of my input/output XLR's (Neutrik D type) have an extra lug next to pin 1, should these be connected to pin1?
Can anyone help narrow down the problem from this information?
Many thanks,
Sam
Having a wee problem with my GSSL + Turbo/2xSSC/CRC mods. Wondering if anyone can help me narrow it down.
I fired it up and fed a stereo signal through it last night for the first time and was greeted with some really overkill clipping distortion that seems to get hotter with higher input volume and make-up gain settings. Really over-saturated and with loud clicks/clips. It's there when the compression is "in" and "out" and is very sensitive to low input signal levels.
On closer inspection the heavily distorted signal only seems to appear on the right channel. When I pan the input signal hard left, the signal coming through the left output sounds great and can handle normal line level signal. But the heavily distorted signal is present on the right channel output.
When I pan the signal hard right, the right output sounds/compresses great, handles normal signal level and nothing comes through the left channel as expected.
When I pan to the centre the left channel in/out seems to function as normal but I get the same distorted clipping signal on the right channel.
I tried using completely different xlr cables and the problem is still there on the same side.
I swapped the left/right input/output opamps, vca opamps, main vca's and sidechain vca's (not all at the same time) to see if the distorted signal swapped sides, but it always stays on the right channel.
The distortion is present in both GSSL or Turbo modes and at all settings on SSC rotary switch when compression is in or out.
VCA's are THAT 2180B's with pin 4 snipped, trimmer resistors for distortion are still present.
I have a suspicion it might be ground issue as I've seen this mentioned in relation to other distortion problems in other threads but I might be way off. All of my input/output XLR's (Neutrik D type) have an extra lug next to pin 1, should these be connected to pin1?
Can anyone help narrow down the problem from this information?
Many thanks,
Sam
