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Michael Harder
 
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Default Main speakers with builtin subwoofer - How to configure receiver?

About a year ago, I purchased the Onkyo HT-S650 home theater system
(http://www.onkyousa.com/model.cfm?m=...&class=Systems), which
includes a receiver, 5 speakers, and a powered sub. The receiver is
rated at 100 W/Ch.

I recently upgraded my main speakers to the Boston Acoustics VR970
(http://www.bostonacoustics.com/disco...d_products.asp), and my
center speaker to the Boston Acoustics VR14. The VR970 speakers have
a 1" tweeter, 2 4.5" mids, a 10" powered woofer, a 12" passive woofer,
and a 100 watt built-in amp. The speakers have one input for speaker
wire, and a second input for subwoofer line-level. Each speaker has a
knob to adjust the bass level of the speaker.

I have connected the main speakers to my receiver, and I split the
subwoofer line-level out of my receiver and connected it to the
subwoofer input of each speaker. I am no longer using the main
speakers, center channel, or subwoofer that came with the HT-S650.

I am not certain how I should configure the bass management of my
receiver and speakers for the best sound. I have been using the Avia
DVD for audio calibration. I use the speakers for both movies and
music, but I would sacrifice movie sound quality for improved music
quality (if there is such a tradeoff).

1. In my receiver, I have the option of sending the low frequencies of
the main channels to the subwoofer. Alternatively, I can send the low
frequencies directly to the main speakers. Since the main speakers
have a built-in subwoofer, they presumably have some internal
crossover where the sound below a certain frequency is redirected to
the subwoofer. I don't know the frequency of this internal crossover.
The biggest difference I see between these two settings, is that if I
use the speaker's crossover, the low frequencies of the left channel
will only come out the left subwoofer, instead of both subwoofers. Is
there any reason I should have the receiver send the low frequencies
of the main channels to the subwoofer? Will the receiver have to use
less power, since it sends the low frequencies over line-level instead
of speaker outputs? I don't play my system very loud.

2. Depending on the answer to #1, should I adjust the bass level of
the subwoofers using the knob on each speaker, or using the subwoofer
level adjustment in my receiver? If I send the low frequencies of the
main channels directly to each speaker, I would need to use the knob
on each speaker first to balance the level of the bass for the left
and right channels, then use the level in my receiver to balance the
bass for the center and surround channels. If I send the low
frequencies of the main channels to the subwoofer, it seems I could
use either adjustment.

3. The crossover in my receiver can be set to 80, 100, or 120 Hz.
Which setting would be best? This may depend on the answer to #1.

Thanks in advance for any advice.
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