Namco System 10 stereo volume

OK so I have a System 10 game (Gamshara) and I just got the game running in Stereo via Konami four-pin. Problem is that I can't change the volume of the game when running in stereo (becaue ATM it's too fucking loud). I don't see any volume knob on the PCB anywhere (if you run it mono I can change the volume via the Egret II, but I can't change the volume if running on Stereo). I check the service menu and I can't change the volume. The System 10 PCB has like eight dip switches and honestly I don't if they do anything.

The hardware is the same for Mr Driller 2/G.

Any advice?

Make sure the mono source isn't hooked up still. Everything should be via the 4 pin.

Xian Xi said:

Make sure the mono source isn't hooked up still. Everything should be via the 4 pin.

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Problem is that I don't see a mono/stereo switch/jumper anywhere on the PCB.

Any ideas?

From what I remember the mono is from the jamma edge and stereo is from the 4 pin, you have to disconnect the mono from the jamma edge if runnning stereo. On other versions of Namco hardware it's different, you actually use the mono channel and for stereo you use the 48 pin connector for the right channel.

If that's the case then I'll keep it mono then. :P

Make sure you disconnect the mono, might be running hot.

Woops I mean if that's the case I been running it in mono then. :P