80Hz - Full Range switch

I have a PSW404. I am using it for stereo music listening only. I have connected my amp's Speaker A output to my speakers, and Speaker B amp output to the subwoofer speaker input. It sounds pretty good. I have experimented with the 80Hz/Full Range switch in both positions, and I feel like I can notice a slight change when flicking the switch, but I don't know.

In this configuration, does the 80Hz/Full Range switch position matter? My understanding is it would only affect the speakers connected to the subwoofer (if I had any).

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Answers

  • DonnyHardoDonnyHardo Posts: 4
    Thanks for the confirmation. That's what I thought. The main reason I haven't connected my mains to the sub is that I have some really nice speaker cable, but not enough to do an extra hop. Also, I thought it would be better to keep the path from amp to speakers as clean as possible by going straight from amp to mains.
  • mlistens03mlistens03 Posts: 2,142
    DonnyHardo wrote: »
    Thanks for the confirmation. That's what I thought. The main reason I haven't connected my mains to the sub is that I have some really nice speaker cable, but not enough to do an extra hop. Also, I thought it would be better to keep the path from amp to speakers as clean as possible by going straight from amp to mains.

    I belive that if you turn off the crossover it would be an absolutely identical signal to the original. No difference at all. If you were to turn it on, lows below 80 hz would be lost but aside from that it would be identical as well. If you can keep your sub right next to your amp, then you could maybe pull it off, but I understand if otherwise. May I ask, what are the speakers in question, and how big is your room? (In feet or meters, either is fine)
    Also, the source of the slight change you noticed could be the sub turning the internal crossover down (or up) to 80 hertz. Where do you have the dial on the back set? If you intend to use the mains full range, then I would set it around 80 hertz.
    Not Tom, or Trey, or Jim
    NAD C352
    Monitor Audio Radius R90’s/Mission Freedom 770 IV
    BJC speaker cables, generic RCA’s, one homemade power cable, because that’s going to do any good with the rest of the generic ones.
    Technics SL3200 turntable and a Shure M97xE phono cartridge
    Velodyne VA-907 subwoofer
    Lafayette LR-1100 acting as a tuner and phono.
    I've always thought the goal of high end audio was not to have your neighbors bang on the wall and say, 'Turn that darn music down' but to have your neighbors bang on the wall and say, 'Tell your friends to go home and you can practice later this week'.
  • DonnyHardoDonnyHardo Posts: 4
    The speakers are Celef Domestic III, I think. 2 way, front ported. Beautiful sounding speakers, but I find with the sub it fills out the sound nicely. I've got an old Luxman valve hybrid amp and Luxman turntable. Room is about 3m x 3m. I've got the sub volume and low pass knobs at the 12 o'clock position (90 hz). I've been meaning to experiment with different settings on those.
  • mlistens03mlistens03 Posts: 2,142
    edited May 23
    DonnyHardo wrote: »
    The speakers are Celef Domestic III, I think. 2 way, front ported. Beautiful sounding speakers, but I find with the sub it fills out the sound nicely. I've got an old Luxman valve hybrid amp and Luxman turntable. Room is about 3m x 3m. I've got the sub volume and low pass knobs at the 12 o'clock position (90 hz). I've been meaning to experiment with different settings on those.

    Sounds like an awesome setup!
    Do you notice any difference when you do run through the sub versus when you don’t? That would be interesting to see.
    If your speakers have enough low frequency output, you could be hurting the sound of your setup with a sub. If it sounds better to you the next it is better, but it wouldn’t have “as flat” of a frequency response.
    However, that is not what really matters. As in my sig:
    sure it has a flat response, and sure it has a lot of detail, and yes, it has good and clear lows. But is it enjoyable to listen to? Does it make you grin ear to ear? That’s what really matters.
    I found a pair of Bose 201s very nice to listen to, very engaging and enjoyable. Were they audiophile? No. Did they have a flat response? No. Were they the most clear and resolving speakers? No. The list goes on and on, but they sounded good to my ears, and that was what really mattered. If they were my speakers, I would still have them (albeit in the closet), but my grandpa let me borrow them for a while to see how they really were.
    Anyway, now that I have derailed your thread a little bit, lemme try to get it back on track...
    All I can really tell you is I don’t know if it is safe to run a sub like that or not.. I don’t think it will cause damage to anything, but there is a possibility. It might, it might not.
    Not Tom, or Trey, or Jim
    NAD C352
    Monitor Audio Radius R90’s/Mission Freedom 770 IV
    BJC speaker cables, generic RCA’s, one homemade power cable, because that’s going to do any good with the rest of the generic ones.
    Technics SL3200 turntable and a Shure M97xE phono cartridge
    Velodyne VA-907 subwoofer
    Lafayette LR-1100 acting as a tuner and phono.
    I've always thought the goal of high end audio was not to have your neighbors bang on the wall and say, 'Turn that darn music down' but to have your neighbors bang on the wall and say, 'Tell your friends to go home and you can practice later this week'.
  • DonnyHardoDonnyHardo Posts: 4
    Yes, I know what you mean about possibly degrading the sound. The speakers do probably have enough bass, especially at high volume, but at low volume I think the sub is adding a bit of warmth or richness to the sound. Interestingly, when you are in the room it sounds fine, but I've noticed with the sub, if you go into an adjacent room, you can hear a boominess that wasn't there before. Since your last post, I turned the lowpass down about 10 degrees, probably to about 80 hz, and I think it sounds better. I'll continue to play with it. Cheers!
  • mlistens03mlistens03 Posts: 2,142
    I just had an idea. How big are the binding posts on your receiver?you could run channel A to the speakers with one cable and to the sub with the other. As in 2 cables from channel A, one to mains and one to the sub, the one going to the sub could be a cable of lesser quality. This might be basically the same as wiring in parallel, so be careful.
    Not Tom, or Trey, or Jim
    NAD C352
    Monitor Audio Radius R90’s/Mission Freedom 770 IV
    BJC speaker cables, generic RCA’s, one homemade power cable, because that’s going to do any good with the rest of the generic ones.
    Technics SL3200 turntable and a Shure M97xE phono cartridge
    Velodyne VA-907 subwoofer
    Lafayette LR-1100 acting as a tuner and phono.
    I've always thought the goal of high end audio was not to have your neighbors bang on the wall and say, 'Turn that darn music down' but to have your neighbors bang on the wall and say, 'Tell your friends to go home and you can practice later this week'.
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