Onkyo TX-SR600 & RM6600 wiring

tschmaus
tschmaus Posts: 3
edited July 2005 in Subwoofer Hookup & Bass Management
I have an Onkyo TX-SR600 receiver and a set of Polk RM6600 speakers with a Polk PSW-350 sub. I currently have the front speakers connected to the receiver and the sub's LFE (unfiltered) hookup is connected to the receiver's sub pre out hookup. I have the receiver's speaker settings set to small for all 5 speakers and the sub set to yes. The crossover (I think that's right) is set to 80Hz (I can set it to 80/100/120). It does fine this way, but I'm wondering if it could sound better if I change it so my front speakers are connected directly to the sub and the sub to the receiver (like Polk recommends) then set my receiver's speaker settings to have the front speakers large and the sub to off. Should I do this and if so what should the crossover be set to in the receivers settings, 80/100/120? Any advice would be appreciated.
Post edited by tschmaus on
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Comments

  • John K.
    John K. Posts: 822
    edited July 2005
    TS, welcome. Your present settings are in general good ones, but probably aren't the best for the RM6600 speakers. The 80Hz crossover is good when the speakers have strong response down that far, but the specs on the RM6600 show that the speakers are already down about 3dB at 140Hz and they would have very little output at 80Hz. Since the 80Hz setting on your 600 is rolling the PSW-350 off above 80Hz, the net result is weakness in the upper bass area from about 90-130Hz. To let the 350 help to fill this in you should set your 600 to 120Hz rather than 80Hz. This should give better results and it wouldn't be necessary to use the alternative wiring suggested in the manual.
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  • tschmaus
    tschmaus Posts: 3
    edited July 2005
    Thanks for the info. I changed the setting in my receiver's setup. Is there a difference in using the LFE(unfiltered) plug, over the Left & Right plugs on the sub? I currently am using the LFE plug.
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  • John K.
    John K. Posts: 822
    edited July 2005
    Yes, the difference is simply that the LFE input completely bypasses the internal crossover filter in the sub and allows the filter in the receiver to do the job without interference. The left and right inputs run through the internal sub filter and the control on the sub would change the frequency above which the sub is rolled off. Your original settings should be fine, except to change to the 120Hz crossover in the receiver.
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  • tschmaus
    tschmaus Posts: 3
    edited July 2005
    That's great. Thanks again.
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