Problem Volume control on Alpine Racer 2 / Namco System 22

[Benjamin]

I am restoring an Alpine Racer 2. The volume is too loud and the sound is distorted. While the volume setting in the service menu is set to lowest the volume is still quite loud. Is there any way to lower the volume level on the amp?
Thanks for helping me out

 

[duncthepunk]

look at the capacitors on the board near amplifier section . check the pot on volume .test for resistance check the speaker ? hope this helps