Axiom Home Page Forums General Discussion Home Theater Centre Speaker Configuration

Just to let everyone know,it is not Audyssey that sets the speakers to large/small, that is the receiver manuacturer's setup routine. The Audyssey folks tell you the same thing, to follow THX recommendations, set your speakers to small and then start with 80hz crossover.

Actually, you are half right, from their FAQ:

"Why does Audyssey set my speakers to Large (or Small) when I know they are not?
MultEQ does not set the speakers to Large or Small. This is a decision made by each individual AVR manufacturer and each uses a different speaker roll-off frequency to make this decision. Audyssey recommends the decision should be made using 40 Hz as the roll- off frequency. That is to say, if a speaker is found to roll-off below 40 Hz it should be called Large and all other speakers should be called Small.

If your AVR manufacturer sets your speakers to Large then all content below the crossover frequency is lost as it is not redirected to the subwoofer. Audyssey recommends changing the speaker setting to Small manually after the calibration is finished"

I know Chris (Audyssey) many times on the AVSforum has stated you should set your speakers to small, and start with an 80hz crossover to follow Tom's (THX founder at Audyssey) recommendations. He has mentioned that many speakers are capable of a lower rolloff, but you should still use small and let the sub do the work it was intended to do. Sounds like something Alan has been preaching for years.

If you have no sub, I would still set it to small as, IIRC, most avrs will then redirect the LFE and below the XO to the mains which will be set to large automatically when the subwoofer setting is to no sub. You will only miss the lowest of the frequncy range as the M80s play quite low ~35hz.

So how do you know what your AVR manufacturer uses for a speaker roll-off and what is the frequency roll-off for the M80's, M60's? I have an older Rotel processor, the instruction manual just says set your mains to large if they are, well large. I would bet most people would view the M80's to be a large speaker, yes, no?

pn

Hey PN,

I usually look at the specs for the speaker +- 3dB and the graph if you can find one. Yes, the 80's go low, but a 12" subwoofer can move more air in the lowwww regions.

And move more air in the other frequencies with more power to them unless you have 300-800watts/channel. That is why you set a the speakers to small and let the sub(s) do their thing, they are more efficient at doing the lower range from 100hz down.

exactly, I thought that is what I was saying the whole time.