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Crossover for sub when receiver has no crossover setting?

4809 Views 4 Replies 3 Participants Last post by RBhifi, Dec 13, 2020

seanmwaple

Discussion Starter · Dec 20, 2017

What should I set the crossover dial on my sub (polk psw108) if my receiver (sony str dh770) has no setting to set the crossover for the sub? I can set the crossover for front center and surrounds but not subwoofer via the receiver.

the dial on the psw108 goes 35-200.

When i did auto calibration I set the crossover to 200 and the volume to the middle... was this incorrect?

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eljaycanuck

· #2 · Dec 20, 2017

seanmwaple said:
What should I set the crossover dial on my sub (polk psw108) if my receiver (sony str dh770) has no setting to set the crossover for the sub? I can set the crossover for front center and surrounds but
not subwoofer via the receiver. ...

The crossover settings for the speakers determine:
- what goes to the speakers (everything above the settings); and
- what goes to the sub(s) (everything below the settings).

Set the low-pass filter ("crossover") on the subwoofer itself to the maximum value to effectively disable it since the AVR is handling bass management.

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seanmwaple

Discussion Starter · #3 · Dec 20, 2017

eljaycanuck said:
The crossover settings for the speakers determine:
- what goes to the speakers (everything above the settings); and
- what goes to the sub(s) (everything below the settings).

Set the low-pass filter ("crossover") on the subwoofer itself to the maximum value to effectively disable it since the AVR is handling bass management.

Ahh okay I gotcha.

So for my front left and front right should I use 120 like the calibration suggested or something lower and then the surrounds at 120?

My front speakers are Polk T15 (Lower and Upper -3dB Limits 65 Hz → 20 Hz)
My center is Polk T30 (Lower and Upper -3dB Limits 82 Hz → 20 kHz)

Then the 4 surrounds are just cheap Dynex DP-SP115
https://www.bestbuy.com/site/dynex-4-2-way-bookshelf-speakers-pair-black/1404008.p?skuId=1404008

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eljaycanuck

· #4 · Dec 21, 2017

If you can adjust the crossover settings separately, I'd try:
- 80Hz for the mains;
- 100 (or 120Hz) for the CC speaker; and
- 120Hz for the surrounds.

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RBhifi

· #5 · Dec 13, 2020

If you're geting localization from your subwoofer start turning down the crossover on your sub to a lower frequency, until you can't localize the subwoofer bass anymore. I had to do this on my friends Sony STR DH550. I ended up setting both of her subs to about 80 hz.
Yes, I know this thread is 3yrs old.

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