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  1. #1

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    Default What sub freq. should be used for R30 fronts?

    I have R30 fronts, R15 rears, and a CSI20 center. My sub is a 150 watt Pioneer. I don't really understand how the frequency setting works. I'm assuming that it's where you want the sub to start picking up where your speakers can't produce the low sounds. The thing is...the frequency only ranges from 150-50. Shouldn't the range be more like 150-20 so that you can accurately set it at the point that your fronts bottom out? I know that most of you have the RTI70s but I'm hoping that somone knows a good frequency point for the R30 setup.

  2. #2

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    That depends, are you using the bass management and sub out on your receiver? If so, set all speakers to small, then set your sub crossover to 150 Hz to avoid double filtering. Or, if you are set up "the polk way", set all speakers except for the r30s to small , set r30s to large and set the crossover on the sub to 80-100Hz. Even though your R30s can go lower they will draw more current from the amp which usually means higher distortion. You can play around with the settings till you find what you like, this is just a suggested starting point. Very few speakers can play loudly near 20 Hz, in fact very few subs can even do this(SVS excluded of course).
    Last edited by gatemplin; 09-26-2003 at 05:32 PM.

  3. #3
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    pbc,

    gatemplin is on the right track... You want to blend in your sub above where the mains start rolling off, where their output is still flat. And depending on the sub's power vs. your AVR's you can go higher to best utilize the total power you have available, but in general no higher than 100 Hz as localization of the bass source is defintely kicking in aropund here (some say this occurs at more like 80 Hz).

    In your case the 30's are down 3 dB at 55 Hz, so you will want your crossover set above this point... probably in the 80 Hz vicinity or higher.

    What AVR are you running?
    How are you wired? Do the AVR Mains out go to the sub and then from sub to the 30's (the Polk way), or AVR direct to the 30's with the sub/ LFE out to the sub (the Club Polk way)?
    With the former you leave mains set to large and sub to "no" and do all filtering at the sub.
    With the latter Mains are small, sub is "yes", sub filter is set to maximum and crossover is set in the AVR.

    We'll get you there....
    More later,
    Tour...
    Vox Copuli
    Better to remain silent and be thought a fool, than to open your mouth and remove all doubt. - Old English Proverb

    "It's easy to get lost in price vs performance vs ego vs illusion." - doro
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    ...thanks gatemplin.


    tour2ma- "What AVR are you running?
    How are you wired? Do the AVR Mains out go to the sub and then from sub to the 30's (the Polk way), or AVR direct to the 30's with the sub/ LFE out to the sub (the Club Polk way)?
    With the former you leave mains set to large and sub to "no" and do all filtering at the sub.
    With the latter Mains are small, sub is "yes", sub filter is set to maximum and crossover is set in the AVR."


    What does AVR mean? ....well right now I probably have it hooked up incorrectly. I have a Kenwood VR605 that is "allegedly" 5 X 100 watt. It only has a subwoofer pre-out connection that I run an rca cable from it to the subwoofer in jack on the sub. I have all my speakers set to small and I have the frequency of the sub set to 100. I'm not sure what gets filtered at the sub level and what gets filtered at the receiver level because both came with little or no documentation.

  5. #5
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    AVR = Audio Video Receiver

    You are wired the Club way. With the sub being fed via the jack its filter may already be bypassed, but I'd turn the setting to maximum anyway to eliminate any chance of double filtering. Your Kenwood likely has a default sub crossover point of something in the 80 to 100 Hz range.

    The Kenwood should have an option to tell it whether there is a sub in the system.

    You need to find more info on your AVR. Someone here may know your Kenwood. If they don't happen on this thread, try posting over in electronics...
    More later,
    Tour...
    Vox Copuli
    Better to remain silent and be thought a fool, than to open your mouth and remove all doubt. - Old English Proverb

    "It's easy to get lost in price vs performance vs ego vs illusion." - doro
    "There is a certain entertainment value in ripping the occaisonal (sic) buttmunch..." - TroyD
    "Death doesn't come with a Uhaul." - Dennis Gardner

    Rebuilding Maggie 2-ch & Amazing 2-ch... Building 2-ch "wall"... Figuring out the HT

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