tri amping

Hello,

I was wondering if anyone is using the 7500 for triamping. I'm currently using three separate amps for this and then using the amps in my av receiver to power the center and rears.

My receiver is kind of getting out of date so I was thinking of getting the prepro receiver(when it is released). The I would need another amp to power the rears and center. Instead of running four amps I was thinking about purchasing two 7500s and using three channels for the triamp and one for the rear and one for the center.

I wounder how the amps would preform in such a setup.

Musicality is of importance!

Any thoughts???

Thanks,
Joe

Waste of time. The only instance where you will hear any improvement is if you go the completely active crossover route by removing the passive crossovers from your speakers. To do that is probably way more trouble than you're willing to go through.

Passive bi-amping and bi-wiring are useless.

If you're really interested in musicality, get a tube power amp.

Thanks, but I am using an active crossover.

Oh, and I did tried a Conrad Johnson tube amp once and wasn't that impressed... it sounded kind of fuzzy... a little too warm... lacked detail.

But that's just me.

Active tri-amping with a 7500 will certainly give you a lot of power to work with. Without knowing what speakers are involved here, I wonder of a 7075 or 7125 would be a good fit.

You didn't make that clear. 99.999% of people who post that they are "bi-amping" mean passive, which is useless.

The 7075 would undoubtedly be powerful enough for the tweeter and perhaps the midrange. There is very little power used in those regions. The woofer is the component which needs the power, and even then, if a subwoofer is used, even that requirement for power is lessened.

If it were me, I'd use tube amps at least for the mid and tweeter, with a solid state amp for the woofer, which needs the damping factor.

The speakers I'm using are DIY home made. 3-way tweeter>mid>dual 8" 8ohm woofers.

The woofers need some meat behind them but the tweeter and mid are easy enough to drive.

Since I intend to go balanced with the preamp and the active crossover is balanced, I would like to stay balanced with the amps as well(or what's the point).


Part of my attraction here is being able to drop one of my amps and just have two.

Just to make it clear I need 6channels for the main speakers 2 for the rears and one for the center. I have one rear center speaker as well but with the newer 7.1 format they require two of them so I think I can live without it. 5.1 seams to be fine enough for me anyways.

So, that's a total of 9 channels(possibly 10).

My main concern is inter channel distortion and when those dual woofer are sent a heavy bass note how will that effect the other channels with a multichannel amp?

Thanks,
Joe

Obviously, a pair of 7500's will be nowhere near their limits in handling the load in question. As for cross-talk between channels, I've not heard of that being a problem when the 7500 is used under normal circumstances. if you were concerned, you could always make use of the separate transformers - put the woofers on one transformer and the mid & tweeter on the other (Svet's pictures of the 7500 show you which channels are connected to which transformer). I'd consider that to be overkill, but it could be an extra bit of peace of mind...

Thanks gonk,

The pics were very helpful. It probably would not hurt to have the woofers on there own transformers.

Joe