1068 sub test tone

[KEN KAZ]

question on calibrating the 1068.

I an using a spl meter, and i have all 7 speakers at the same db. Perfect.

When i go to the sub output on the test tone, there is barley any output, and surely i am not going to set it to 70dB.

Is this normal?

The sub works jsut fine while watching movies.

kaz

[Andrew Pratt]

What's the volume level set on the subwoofer itself?

[KEN KAZ]

about 1/2, any higher and the whoel house is vibrating.

do you get a db level from your sub that is in line with your other speakers when using the test tone?

[basementjack]

If you are using a radio shack sound meter, I think you want the weight setting at "C" not "A" A filters out low frequency.

I've also heard it's sometimes best to use Slow vs fast

Lastly, given the large wavelength of the lower freqencies, it is possible that some standing waves in your room are canceling some freqencies. For the main speakers, leave the sound level meter at the listening position, for the woofer, start at the listening postion then pick it up and walk around with it and see if it changes - if it does you might want to take an average of the postions, but you might also consider moving the sub if it smoothes out the response.