know-it-all customers

Sorry, upon re-reading my post I realize I came across quite a bit harsher than I intended. :)

You sound cool, and your attitude is a good one.

Taking the cover off to fiddle with it certainly qualifies as tampering, I was wrongly assuming they were control knobs on the amp. The problem with the control knobs on the amp is that, I, like many people, like to fiddle, even if we don't know what it does . :)

I don't work in car audio, I work in computers, and I know how trying it can be to deal with the general public, especially for custom one-off stuff

I remember having this problem and my boss at the time had un mark the chasis of the amp with a pen mark and also explain to the customer that the gains, although not all the way up, have been set for the optimum preformance of the system, and they should not be changed unless done by the shop. They were also told that if a speaker blows or there was a problem with the system, and they were tampered with, the shop was not responsible.

this seemed to work.

rich