Ohm 4 channel amp

[TLS Guy]

I feared it was those.

Impedance curve.

Frequency response

Those are NRC measurements. Not very good.

Those speakers are not very suitable for a large space.

You can drive them with a four ohm stable receiver if it can tolerate four ohms on four channels.

Adding another pair of speakers will not make it twice as loud. You will only gain 3db. The law is logarithmic and not linear.

 

[Kvn_Walker]

Thanks for the model clarification. Here's a review with a good suite of measurements: http://i.nextmedia.com.au/Assets/bw_685_s2_loudspeakers_review_test_lores.pdf

EDIT: TLS beat me to it!

If you go the receiver route, keep in mind that you still can't use the A and B speaker terminals (assuming modern receivers still have those). A and B are still parallel outputs from the same two amplifier channels, much like you have with your Yamaha. You would still run the risk of sending the receiver into protection otherwise. The kicker there is finding a receiver that will let yo choose to output full-range stereo to other channels besides the fronts. Again, I don't know if such a thing exists because I haven't bought an AVR in years.

My best suggestion if you absolutely don't want to change speakers, and you like the quadraphonic sound, is to get a second 2 channel amp or receiver and dedicate one amplifier per pair of speakers. You also need something with an integrated sub crossover.

 

[mtomline]

Hi, yeah I understand that adding another pair would not make anything louder, I was just trying to achieve more even balance in the room, 4 do this nicely but I can't run them all without being worried, all I have done is run myself into trouble.

What do you guys think of the speakers on paper?

Should I just get a beasty amp and all will be good? Or an AV Reciever if that will do the trick, as I do use the setup for movies etc as well. Then my budget is screwed as I impulse bought and seen them being 8ohm, so ok.

At 1 point this amp powered a Bose 4ohm cube speaker set with sub and 2x 4-8ohm floor standing speakers at very high volumes allot and never did it sound bad or overheat. So my thoughts were, these speakers can be powered 25-100wat. I would just have to not push them too hard and all will be ok.

Wish I'd just started to buy Sonos, where I can have as many speakers as I want in as many rooms as I want all wireless and self-powered.

Sorry wrote this well quick, thanks for your help again guys!!!

 

[Leemix]

An ok reciever and depending a bit on how the speakers are located you could run main 2 as fronts (ofc) and the other 2 as rear speakers and use the 5channel stereo setting or such, that could fill the room and not have the timing issues some zone 2 implementations in recievers have.


Sent from my iPad using Tapatalk

 

[mtomline]

My best suggestion if you absolutely don't want to change speakers, and you like the quadraphonic sound, is to get a second 2 channel amp or receiver and dedicate one amplifier per pair of speakers. You also need something with an integrated sub crossover.

This is it! I wondered about getting another same amp. But I looked on how to drive them both together and could not find how? This is a good route for me as don't need to spend ALLOT more, or even replace!

 

[mtomline]

At what volume levels am I at the moment in danger of something going wrong? as it would be good to use all 4 at low volumes when watching tv etc? Like 10 o'clock?