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Added A Second Subwoofer To System

I haven't created a Virtual System yet so I will give a quick overview of my room and system.

I'm currently using a Classe CP-50 Preamp into Black Ice Audio Fusion 3502P power amp using the balanced in/out.

Speakers are Sonus Faber Lumina III's.

Subs are SVS SB2000 Pro and SVS SB1000 (not pro version)

Room is 13'L x12'W x 8' H

Subs went from both front corners of room to half way along both side walls.  

Listening position is approx. 7.5' from main speakers and 3' from rear wall.

I like the way the bass sounds with the subs in this position and although they appear close to my listening position, I can't hear or am aware of their locations.  

I set the phase for loudest output at these new locations.

My problem (?) is I feel that the overall volume of my system has dropped a bit.  I feel the need to turn the volume up a little louder than I did before the change.  

I'm actually concerned that I lost a little hearing overnight.  I am 63.  In all seriousness,  I doubt that I did although I know that hearing loss is inevitable.

Anyone experience anything similar? 

nicktheknife

Showing 1 response by musicaddict

musicaddict
370 posts
 

I have an SVS SB-3000 and one older SB-2000 in a theater (plus old 15" DefTech). I have my second SB-2000 in a 13x18x9ft TV room and it is more than enough for loud effects watching TV.   Those subs will do the trick in that room.

I will say that personally, I always use a test disc, sound meter and some testing work to fine tune the best in flat bass and room EQ. But this can be done by ear with a little analytical listening (not as fun).

Are you running your very nice Lumina IIIs full range?  I probably would and bet they go down into the 40s for sure. Setting sub phase for loudest is good, means the bass drivers are acting more in unison and not trying to cancel each other out.

I'd experiment with lowering the subs' low pass and turning up the sub volume of both. Not being able to tell where they are implies you do have the crossover set reasonably low already. I think the subs will overlap the SF speaker a bit if not kept low. I don't think the adjustment goes lower than 50Hz? 

After juggling subs around my primary audio system uses one R.E.L. Britannia B1 at 28Hz and an R.E.L. Storm III set at 30Hz, volumes maybe 40%? Works well for the ultra-low end in the 17x20x10ft room. Your two subs are nice for your space.

Good luck experimenting. Let us know what you hear.

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