clermontcop Posted February 14, 2010 Share Posted February 14, 2010 I have a Emotiva UPA-2 amplifier. I also have a Yamaha M-45. Is it possible to hook the Yamaha amplifier up to the Emotiva amplifier? The Emotiva is powering a pair of Cornwalls. The emotiva is rated at 125 watts a channel and the yamaha is rated at 125 watts a channel. Would I benefit anything if it is possible to do this? Could I damage anything by doing this? Thanks. Quote Link to comment Share on other sites More sharing options...
russ69 Posted February 14, 2010 Share Posted February 14, 2010 Matt, If you need more power just buy a bigger amp, otherwise use the amp you have that sounds the best. Thanx, Russ Quote Link to comment Share on other sites More sharing options...
wuzzzer Posted February 14, 2010 Share Posted February 14, 2010 What levels of SPL aren't you achieving with 250 watts? Each amp will only be able to put out the amount of watts it can. Only way to do anything like you're describing would be to bridge each each and run the Emotiva to one speaker and the Yamaha to the other. I know the Emotiva can't be bridged so even that wouldn't be possible. Quote Link to comment Share on other sites More sharing options...
djk Posted February 14, 2010 Share Posted February 14, 2010 While it might be possible for a technician to figure out how to bridge the pair, I wouldn't even consider it. Each amplifier would have to be reliable at 2 ohms stereo to run a 4 ohm (Cornwall) load in bridge, and theYamaha would blow up (sooner than later) . Don't know the Emotiva, but I doubt it will like being slammed at 2 ohms either. With an electronic crossover you could bi-amp, that would play a lot louder without stressing the amplifiers. You could also use the amplifier with the bass bass on the LF, and the amplifier with the best highs on the HF. A good electronic crossover might run you $100 used. Posted by djk(M) on December 23, 2001 at 02:21:45In Reply to: Question: amp power and bi-amping posted by Tony B. on December 22, 2001 at 13:56:50: If you use an electronic crossover and bi-amp a speaker like a Klipsch Cornwall with a 50W amp on the bass and a 10W amp on the mid and hf it will play as loud as a 400W amp through the passive crossover.If you 'bi-amp' your Newform speakers with a 250W amp on the bass and a 160W amp on the hf without an elecronic crossover it will play as loud as the 160W amp would play running both.The 4:1 benefit for bi-amping is only there when the spectrum is divided ahead of the power amps and when the division point is near the mid point of the spectral distribution of energy.On a voltage basis the division occurs around 250hz.This must be weighted by the peak to average ratio so that the equal energy point for above and below the crossover is about 500hz.This is also affected by the slope of the crossover.For the example of the Klipsch Cornwall it has a 600hz crossover point.If the drivers were the same efficency then 50W + 50W would = 200W through the passive crossover.In reality the HF is 10dB more efficent than the LF so we only need 50W + 5W to = 200W.If the HF remains undistorted it will mask distortion from the LF amp driven slightly into clipping.This means that if we use a 10W HF amp with a 50W LF amp it would take 400W to play the same level undistorted through the passive crossover.If you 'bi-amp' your Newform speakers without an electronic crossover each amp will be receiving full range signal and will clip at the same point it did with only one amp hooked up to the speakers.It does sound different to do this, but make no mistake, you will not be getting the benefits of dividing the signal ahead of the amplifiers. Quote Link to comment Share on other sites More sharing options...
artto Posted February 16, 2010 Share Posted February 16, 2010 And even if you could do it, the increase in total sound output would only be +3dB at best. +10dB "sounds" twice as loud. +3dB doubles the power. Quote Link to comment Share on other sites More sharing options...
tube fanatic Posted February 23, 2010 Share Posted February 23, 2010 With your system, using the Cornwalls, only 28.5 watts/channel will give you a sound pressure level of around 110 db in a 3000 cubic foot room. How loudly do you want to play the system? That kind of level would be nearly impossible to tolerate!!! Quote Link to comment Share on other sites More sharing options...
Islander Posted February 27, 2010 Share Posted February 27, 2010 It's not about total volume, it's about having lots of headroom, for more realistic dynamics. More powerful amps deliver more authoritative sound, especially in the bass region, and there's an effortless quality to the sound as well. Quote Link to comment Share on other sites More sharing options...
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