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Subwoofer for classical music listener

This is my second post on the subject of subwoofers.
My first post wasn't specific enough.
I listen to classical music 90% of the time.
Are there any classical music listeners out there who have subwoofers?
if there are, could you let me know what you have?
i don't imagine I would need quite as powerful or expensive a sub as those who mainly listen to other types of music, but I may be wrong.

128x128rvpiano
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rvpiano OP
2,653 posts
 
Yogiboy: As far as I know there are no inputs on my amp.
rvpiano's avatar
rvpiano OP
2,653 posts
 
Excuse me, I meant outputs.  I'm very confused! lol
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yogiboy
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@rvpiano 
If you look at the manual page 7&9 it shows how to use the high pass filter. The manual should point out that you don’t use y adapters when using the high pass filter. You go from the preamp out to the sub in then from the sub out to the amp in . You will need two pairs of IC’s to do this. That manual should explain this!
https://system.na1.netsuite.com/core/media/media.nl?id=21137&c=3634088&h=34287ab58a6262c3686...
rvpiano's avatar
rvpiano OP
2,653 posts
 
Yes!  I finally got it!
To do it I'll have to buy another matching IC.
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almarg
9,670 posts
 
Rvpiano 6-9-2017
The SVS guy told me to set the phase to zero. How do I determine phasing differences?  What do I listen for? I really couldn't hear differences when I first set up the sub.
From the manual for the sub:
Phase Control:
This control delays the signal being processed through the amplifier. For connection to an A/V receiver, it should be set to 0 degrees. For 2-channel applications, it should be adjusted to obtain the most coherent and stable soundstage and transition between the loudspeakers and the subwoofer.
Although it isn't stated clearly, I assume "the amplifier" in that statement refers to the amplifier in the sub, not to the external amplifier which drives the main speakers. 

Keep in mind, also, that the optimal phase control setting is likely to vary somewhat depending on where the sub is located.  Also, I'm not sure how the SVS person could make a blanket recommendation of zero degrees without knowing the phase shifts (or possibly even 180 degree polarity inversions) that might be introduced by your amplifier and/or your main speakers.

Regarding the high pass filter in the sub, note that it has a fixed corner frequency of 80 Hz, and rolls off at 12 db/octave below that frequency.  The sub's low pass filter also rolls off at 12 db/octave, above whatever corner frequency its control is set to (between 50 and 160 Hz).  Therefore if the high pass filter function is used (and it is certainly worth trying, although depending on many variables its use may or may not prove to be optimal), the low pass corner frequency should probably be set in the vicinity of 80 Hz, with fine tuning by ear.

Regards,
-- Al
  
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