psw1200

whitetruk

hi all happy holidays
just purchased this on the forum about a week ago did not really need it but the price was right and local pick up can`t beat that well any ways i got it for my two channel set up to try out ( i`m a die hard two channel never thinking of a sub) i`ll tell ya what this thing added a full octave to my little srs`2s. all i did was run a y spitter off my preamp into the lfe input so it`s playing 80 hertz down wow is all i can say this thing has tons of hook up options on it too.thinking about running it off one of the tape outputs on the preamp i think i read some where that can be done.just wanted to share my joy, hope everyone has happy and safe holiday.
p.s. club polk is awesome

Eric W

Awesome!

jcaut

I'm glad you're happy with the sound, but I want to pick at your hookup method a little bit. You say you've used a Y-splitter from your preamp (I'm presuming that the other end of the "Y" goes to your amp) into the LFE input on the sub. If that's the case, then the sub is NOT playing 80Hz and down, but rather, everything it can play. Should sound terrible, actually. I'm not aware of any two channel preamps with built-in bass management capabilities, so I can only imagine that you're feeding the sub a full-range signal.

The LFE input on the sub is UNfiltered, meaning that it bypasses the low pass filter that's built into the sub. If you connect a full-range signal to that input, the sub is going to reproduce anything that it's physically and electrically able to reproduce: Probably from 300Hz and down, anyway.

The proper way to connect it, in your case, would be to use the Y's and split off your preamp L&R outputs to the Front L&R inputs on the sub. Then adjust the frequency cut-off and the phase controls on the back of the sub to your liking.

If you try to run it off a tape-out, you won't have control of the sub volume with your preamp's volume control. Not good, in my opinion, unless you never adjust the volume.

I'm also a little surprised that you feel like the sub added much to your SRS 2's, unless you're just after bigger, thumping, home theater-type bass. I've got a PSW1200, and I've heard SRS 2's (will be getting some soon, in fact) and I think the SRS 2's quite possibly dig deeper- maybe not with the "in your face" quantity of the 1200, but with better quality. But that's just me. If you're happy with the sound, then that's all that matters.

Jason

P.S: There's a "Shift" key on either side of the keyboard, second row from the bottom. You can hit them with your pinky fingers. The "." (period) key is the second key to the left of the "Shift" key on the right, and the "," (comma) is to the left of that. You really should learn to use those.

whitetruk

sorry about the periods and the comma`s, i`m just glad i hit the space key.thank you much for your input, i thought the lfe was filtered at 80 hertz(shows you what i know about a sub).i`am definitily going to try exactly what you said.
it`s hard to believe that it`s playing as much full range as it can.thought it sounded pretty good,i have it set up in a fairly large room.
thanx again

p.s. how am i doing i thought when i got this computer that stuff didn`t matter.but ,it is hard to read it

jcaut

Hey, just kidding you about the punctuation. I kept going back to your post when I was typing my reply, and I kept thinking, "Dang that's hard to read!"

But, yes, the LFE input on the sub is not filtered. It's designed to accept the "Sub OUT" signal from a HT receiver, so that the crossover in the receiver can do the filtering (you generally don't want to double-filter the signal as it can give you unpredictable results). You should be able to fine tune it much better if you use the Front L&R inputs and tweak the crossover and phase controls.

Jason

whitetruk

jason,
switched it around,sounds like tons of bass got alot of playing around to do now.i`m waiting for a manual for it ,so in the mean time can i turn the phase knob while the sub is playing.
also the line level 40- 80 switch,if i have it on 40 does that mean everyting below 40 is output?just want to try the really low stuff.i believe it did add a lower octave to the srs`2s though,but it is subwoofer bass.
happy new year
scott

jcaut

Scott,

The 40/80 switch only affects the outputs on the sub-- both the line level and the speaker level. It's for high-pass filtering your main speakers. I don't think it would be of any use in your situation.

Yes, you can turn the phase knob while the sub is playing. It should make a noticable difference in the sound, since your SRS 2's are going to be producing some of the same frequencies as the sub. My experience has been that most of the time the "0" setting -- full counterclockwise-- works best, though that certainly may not hold true in your situation. It can be tricky to adjust. Play a bass-heavy recording and preferably have someone else turn the knob slowly, while you listen from your normal listening position. At some point you'll hear a cancellation of bass, when the sub and the speakers are out of phase. You want to adjust for the fullest bass that sounds natural.

The crossover knob, or more correctly "variable low-pass filter" on the sub is the one that will limit the upper frequency that the sub tries to reproduce. If you set it fully counter-clockwise the sub will only attempt to play the lowest frequencies.

Jason

whitetruk

jason,
thanx for your help,and your time.

scott