1075 rotel amp

[cadman]

I am looking inside my 1075 rotel amp and I see blue pots close to
the output transistor are they (BIAS pot) did anybody turn them higher
I am shure rotel put them in conservative setting. hemm.... wondering

[Andrew Pratt]

While i'm sure it could be possible to eek out a little more power from the 1075 IMO its not worth loosing warrenty over given that the 1075 already packs quite a punch. I've read of other people going that with some HK amps but those were all out of warrenty so there was less risk per say.

[cadman]

well I did not buy it new and waranty is not trasverable
I just like to know is somebody did it

[cadman]

[cadman]

[art vandeleigh]

so let me get this straight, you can actually increase the power output of the amp? is this similar to overclocking a CPU? will the amp then need to draw more current to output more power? will this lessen the life of the amp?

[Eiffel]

If these pots are to adjust bias, they are more like the contrast or brightness of your TV... There is one setting which is optimal (at this setting, a small signal will have an influence, and no signal will not generate some noise/sound). Turning it all the way (one way or the other) will likely result in some distortion (loss of sensitivity, or noise).

my tubed equipment has such bias adjustment, and finding the right setting requires a digital multimeter with 3.5 digits of precision... so beware of heavy handedness