Bose 901's in an acoustically treated room?

The perceived spectral balance of the Bose 901 is dominated by the spectral balance of the reflected sound, and IF the acoustic treatments in the room absorb the short wavelengths (high frequencies) moreso than they absorb the longer wavelengths, THEN the perceived spectral balance will be degraded accordingly.

To put it another way, if you go with acoustic treatments, I would suggest using products which deliberately PRESERVE the spectral balance of the reflected energy.

Duke

Regarding the 901’s: you cannot get good bass out of  9 small 3inch drivers no matter how many watts you pump into them! They are strictly midrange speakers!

The 501 was a much better speaker because it had a front-firing 10inch woofer and two of the 3inch rear-firing at left and right angles. I listened to them and was impressed! Good bass and a nice airy upper range.

+1 jasonbourne52 - I completely agree with both posts! I personally wouldn’t waste  my time setting up the 901’s in a treated room, you’re going to have even less high frequencies.

Regarding the 901’s: you cannot get good bass out of  9 small 3inch drivers no matter how many watts you pump into them! They are strictly midrange speakers!

I agree!