2x UFW-10 to Yamaha HTR-5790, repost

[agarwalro]

I posted this in the speakers forum and did not get a satisfactory reply. Can anyone help me here.

I just read “AV123 Rocket UFW-10 Subwoofer Review” by Patrick Hart. $1000.00 for 2 great subs is 2 good an opportunity to let up. But, this excellent article got me thinking on what is the effect of adding multiple subs to a single “sub pre-out”.

I am thinking of getting the Yammy HTR-5790 and 2 UFW-10's. The 5790 has a single sub pre-out. Is it possible to overload the amp if I split the signal to 2 subs and connect only the RCA "R" on the sub. What about 4 subs if I get two more in the future.

Also, the UFW-10 has the RCA L+R option that can be used with a Y-splitter. Does this increase the load on the amp when using 2 subs? I have added a diagram for better explanation of the setup. Will I kill the a/v receiver if I do something like this?

 

[MDS]

The only issue with splitting a line-level signal is possible loss of signal strength, but a single split will not cause any problems. Lots of people do it to drive two subs from a single sub pre-out.

If you use a Y-adaptor and connect both the left and right inputs of the sub, the input level will be doubled. Remember the sub needs a mono signal, and thus will sum the L+R inputs to mono. It's a cheap way of boosting the signal, but the same result can be achieved by simply turning up the volume on the sub a little.

 

[Mobius]

I am thinking of getting the Yammy HTR-5790 and 2 UFW-10's. The 5790 has a single sub pre-out. Is it possible to overload the amp if I split the signal to 2 subs and connect only the RCA "R" on the sub. What about 4 subs if I get two more in the future.

Does this increase the load on the amp when using 2 subs? I have added a diagram for better explanation of the setup. Will I kill the a/v receiver if I do something like this?

The Yammy & UFW-10s will work wonderfully together. You should not have any problems running a pair of subwoofers. You will not kill your receiver.