I need help connecting two subwoofers to one subwoofer output - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 8 Old 10-09-2007, 08:52 AM - Thread Starter
AVS Special Member
 
kemiza's Avatar
 
Join Date: Jun 2007
Location: Circle City
Posts: 1,170
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 89
I own a Klipsch RSW-12 Subwoofer and a Def Tech Powerfield 15 Plus. When I connect the second subwoofer(Def Tech Powerfield 15 Plus) to the
line out(Klipsch RSW-12) it seems like both subs put out less
bass. Why is that? Is there a way to fix this? I even tried a y-cable from the subwoofer output on the receiver. The same thing happens. I think the preamp level/voltage from the receiver isn't strong enough for both subs.

Panasonic TC-P50ST60 plasma HD television, Onkyo TX-SR805 and PIONEER ELITE VSX-47TX receivers, Klipsch RB-75(2 pair) and RB-61 bookshelf speakers, Klipsch RSW-10, RSW-12(2), Velodyne HGS-12, HGS-18 subwoofers, PS3 80G, PIONEER DV-525 dvd player, Klipsch RS-42 surrounds, Klipsch RC-52 center channel
kemiza is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old 10-09-2007, 08:53 AM
AVS Special Member
 
jpmst3's Avatar
 
Join Date: Dec 2005
Location: Davidsville, PA
Posts: 8,115
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Liked: 186
Quote:
Originally Posted by kemiza View Post

I think the preamp level/voltage from the receiver isn't strong enough for both subs.

That is what it sounds like. It is being attentuated to much when split.

Do you have good quality cables? Sometimes a cheap Y can make a difference. We are talking very low voltage...

Can you just turn them up accordingly?

jpmst3 is offline  
post #3 of 8 Old 10-09-2007, 09:04 AM
AVS Special Member
 
bsoko2's Avatar
 
Join Date: Apr 2007
Location: Olympia, WA
Posts: 4,316
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 56
Did you calibrate each sub individually and you need to use a good quality "Y" cable.

Bill

Dual Submersive HP's


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

 

New HT Room -  
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

bsoko2 is offline  
post #4 of 8 Old 10-09-2007, 09:22 AM
AVS Special Member
 
ggunnell's Avatar
 
Join Date: Apr 2006
Location: Columbia, MO
Posts: 1,018
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Even if your receiver has no output level adjustment for the subwoofer, (if that's true put a new receiver on your Holiday shopping list ), there should be adequate output voltage to drive two subs -- if connected in parallel (as you are doing with the Y connector) each sub input will still see the full output voltage, perhaps less a small amount because of the lower total input impedance of the two subs in parallel.

A more likely scenario is that you have acoustic cancellation between the two subs. If either one of the two subs has a continuously varable phase control, try twirling it while bass is playing -- if just 0 or 180 degree switches, try both positions.

Your strongest bass, and your best blending of non-identical subs, and your easiest way to minimize acoustic cancellation, is to co-locate the two subs -- stack them or run them side by side.
ggunnell is offline  
post #5 of 8 Old 10-09-2007, 09:25 AM
 
Splicer010's Avatar
 
Join Date: Jul 2007
Posts: 7,819
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 32
Just split the sub output on the AVR and run seperate lines to each sub...DO NOT connect one sub to the other one...
Splicer010 is offline  
post #6 of 8 Old 10-09-2007, 09:41 AM - Thread Starter
AVS Special Member
 
kemiza's Avatar
 
Join Date: Jun 2007
Location: Circle City
Posts: 1,170
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 89
Quote:
Originally Posted by jpmst3 View Post

That is what it sounds like. It is being attentuated to much when split.

Do you have good quality cables? Sometimes a cheap Y can make a difference. We are talking very low voltage...

Can you just turn them up accordingly?

All cables are Monster. Turning up the volume doesn't help either.

Panasonic TC-P50ST60 plasma HD television, Onkyo TX-SR805 and PIONEER ELITE VSX-47TX receivers, Klipsch RB-75(2 pair) and RB-61 bookshelf speakers, Klipsch RSW-10, RSW-12(2), Velodyne HGS-12, HGS-18 subwoofers, PS3 80G, PIONEER DV-525 dvd player, Klipsch RS-42 surrounds, Klipsch RC-52 center channel
kemiza is offline  
post #7 of 8 Old 10-09-2007, 09:41 AM - Thread Starter
AVS Special Member
 
kemiza's Avatar
 
Join Date: Jun 2007
Location: Circle City
Posts: 1,170
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 89
Quote:
Originally Posted by bsoko2 View Post

Did you calibrate each sub individually and you need to use a good quality "Y" cable.

Bill

Yes

Panasonic TC-P50ST60 plasma HD television, Onkyo TX-SR805 and PIONEER ELITE VSX-47TX receivers, Klipsch RB-75(2 pair) and RB-61 bookshelf speakers, Klipsch RSW-10, RSW-12(2), Velodyne HGS-12, HGS-18 subwoofers, PS3 80G, PIONEER DV-525 dvd player, Klipsch RS-42 surrounds, Klipsch RC-52 center channel
kemiza is offline  
post #8 of 8 Old 10-09-2007, 09:42 AM - Thread Starter
AVS Special Member
 
kemiza's Avatar
 
Join Date: Jun 2007
Location: Circle City
Posts: 1,170
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 89
Quote:
Originally Posted by Splicer010 View Post

Just split the sub output on the AVR and run seperate lines to each sub...DO NOT connect one sub to the other one...

Tried both ways. I think the voltage is too low for both subs.

Panasonic TC-P50ST60 plasma HD television, Onkyo TX-SR805 and PIONEER ELITE VSX-47TX receivers, Klipsch RB-75(2 pair) and RB-61 bookshelf speakers, Klipsch RSW-10, RSW-12(2), Velodyne HGS-12, HGS-18 subwoofers, PS3 80G, PIONEER DV-525 dvd player, Klipsch RS-42 surrounds, Klipsch RC-52 center channel
kemiza is offline  
Reply Subwoofers, Bass, and Transducers

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off