Axiom Home Page Forums General Discussion Home Theater VP180

You should leave the speaker trims where the receiver sets them. That's the receiver's way of making sure each channel plays at the same level when fed the same signal. The basis is also on the -0 dB setting on the master volume control. The -4.5 dB means that the receiver needs to trim four and a half dB from the output of that channel when the main volume is set to -0 dB to get that speaker to play at "reference" level.

If you had to turn all the trims up 10 dB to get it to sound like you wanted, you should have just turned the master volume control up 10 dB. That does the same thing (on any modern receiver).