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Pre-amp out splitter won't power subwoofers? it does power DSP unit.

Any thoughts are appreciated. I'm using a pre-amp output from my STI-1000 integrated, into a DSP room correction unit, and then back into the STI-1000 via HT Bypass inputs.  I have several subs but so far the only method that powers them with a line-level signal is using a Y splitter coming from the DSP unit's analog line level outputs. In this mode I cannot use a high-pass filter on my mains to relieve them of bass 60 and under +/- as it feeds the subs as well.

Using a Y out block connector from the STI-1000 pre-out (male/2 fem) when I run a cable to the DSP it works (and back to STI), but the subs will not work being fed a signal in this mode. There is no discernible cone movement or vibration. It seems strange as the DSP got its 'half' of the Y split's signal. Maybe the sub needs more to even activate?

Coming out of the DSP output works, but it makes the mains play very low frequencies unnecessarily since they take full signal (and want to play low). So, what am I doing wrong here?  I can't quite figure this one yet, but it may be simple enough. Thanks, folks.  

 

 

musicaddict
russ69's avatar
russ69
3,521 posts
 

I have several subs but so far the only method that powers them with a line-level signal is using a Y splitter coming from the DSP unit's analog line level outputs. In this mode I cannot use a high-pass filter on my mains to relieve them of bass 60 and under +/- as it feeds the subs as well.

That would be my preferred way to do it but if you want to split the lows from the highs, go into the sub, then out of the sub to your mains amp.  

fiesta75
1,378 posts
 

I think russ69's idea will work just fine. Sounds reasonable to me, just haven't sketched this out. Depending on the distances, you may pick up some noise along the way?

musicaddict OP
370 posts
 

Thx russ69.  Thinking of this, rca/line level connections in and out,etc:

STI, Pre-Out L&R both -- to--- SB3000 sub's L&R InPuts.

SB-3000 L&R Outputs to:  L is to DSPeaker L Input, R out to DSP R Input. (and from DSP output back to power amp w/room corr & altered signal for mains/D2s).

But to get a line level signal to both SB-2000 subs on left side of room?

Y off from SB-3000, just before going into LR inputs to DSPunit, and then run lines to both 2000 subs, or daisy chain both off one line, L or R?

I might very carefully try this. Perhaps the line-level output of the SB-3000 is sufficient to run the DSPeaker unit and activate/provide signal to run 2000 subs as well. Who knows?   :-)

 

musicaddict OP
370 posts
 

Tried running into the SB-3000 and then back to power amp, and over to left side subs with Y connector. None of the 3 subs played but the mains still did.

Went back to Y out of DSPeaker unit and all subs play as well as mains but back to no way to high pass the mains.  Think I'll ask SVS for any ideas, finally.

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