New setup: Onkyo 809 with Hybrid 15?

[jlm86]

just connected up my 809...

I ran the Audyssey and it set my speakers to 40hz crossovers on the front?
This cannot be corrrect i don't believe...

any ideas?
thanks

[SME]

You're just fine. My HC-1s and HB-1s alternately come up as either 40 Hz or "full range". I always override my crossovers, setting them to 80 Hz. I imagine 60 Hz would also work fairly well for most users.

Chris Kyriakakis from Audyssey says that the crossover is chosen based on the response of the speakers "in the room". This probably means that our in-room responses are -3 dB (or some such) at or below 40 Hz, which is not really surprising. That doesn't mean that 40 Hz (or full-range) is the best crossover setting because the result is derived from measurements taken with 75 dB test signals. The bass extension seen at 75 dB isn't likely to be there at 95--105 dB. Those lower frequencies demand significantly more amp power and driver excursion; thus, distortion will set in at lower SPL than if those frequencies are sent to a good sub.

I also can't help but wonder if the Audyssey recommended crossover setting is "inflated" down to avoid offending owners of speakers with overrated specifications, similar to the way my Denon automatically sets my "full range" HB-1 speakers to "large". Wow, who knew I had such *large* speakers?!

[Ryan_Hsu]

I agree with SME, typically Audyssey or other room correction features will set speakers to large incorrectly.

It's best to set the crossover to 80 Hz, and set your speakers to "small", and let the subwoofer take all frequencies below the crossover point.

If you have any additional questions, please feel free to contact us.

Regards,
Ryan
The Hsu Research Team
985 N. Shepard Street
Anaheim, CA 92806
USA
714-666-9260