Bi-Wiring Speakers

**nathometheatre** · **10-25-09, 02:03 PM**

Thanks Tony. It's not necessary that I do this anyway, as I'm using Klipsch RF-7's that are already extremely effecient, in a room that's 19x9x8. So their more than ample for my size room. I was just thinking, since I'm not using the additional amps, why not bi-amp my fronts.
My real concern right now is addressing early reflections, and fine tuning my room with acoustical panels, and bass traps. Can you recommend a thread that covers how to locate where I should treat my room with acoustical treatment? That would be major helpful! I've been speaking with a Klipsch engineer, and sent him pics of my theatre, and so far all he's done is recommend a couple of sites that address what kind of materials are best for acoustical treatment, but I really need to read up on how to find standing waves, early reflections etc.....

**tonyvdb** · **10-25-09, 02:15 PM**

For room acoustics have a look through here We have some great members who know alot about that area, Bryan is a great help as he manufacturers really good quality panels see here GIK Acoustics

**Kal Rubinson** · **10-25-09, 02:45 PM**

Quote:

nathometheatre wrote:

If that's the case, why would Denon even have these two additional speaker terminals if their not beneficial??

Marketing.

**badaboom** · **10-25-09, 03:17 PM**

so far I'm very pleased with using the rear back channels to bi-amp my fronts on my Denon AVR1907 - the difference is amazing - and I'm convinced my speakers won't be happy without the extra power.

what I'm hearing is that by going from 7.1 to 5.1 I freed up some power in my amp by getting rid of those extra 2 channels and that is why I'm getting better power from the bi-amping. Not to mention the upgrade in presence - those back 2 channels are just faked data. True 7.1 isn't all that common - just a few Blu-Ray titles. apparently 7.1 video games are coming, but only one title so far. when that day comes, I'll buy a 7.1 amp that has 2 extra channels for bi-amping my fronts.

I wonder though how I would know if my amp was maxing out - I don't hear the distortion predicted above, and I just listened to the water crashing over NY in The Day After Tomorrow and it sounded clear. Maybe someone knows a more demanding movie scene I should try....?

**nathometheatre** · **10-25-09, 03:47 PM**

Im still not convinced that the Denon's extra amps won't benefit my front channels, although I do appreciate all the feedback. I'm going to do some extensive research on this, including trying it with my system. I just don't buy the opinion that Denon would design a receiver that can support two extra zones, and the power supply can't handle it, or is being pushed to its limitations. I've had 7 denon H/T receivers, and not as powerful as the 4308 mind you, and pushed much heavier speaker loads down to 4ohm speakers, and they've always impressed me. Not necessarily disagreeing here, just want to follow up on this. Thanks for the thread recommendations Tony!

**tonyvdb** · **10-25-09, 04:00 PM**

There is a reason why alot of the more serious setups of members on here and on other forums use outboard amplification its not snake oil but you have to try it in order to believe it. Its all about the amount of power available from one power supply For example the Onkyo 805 weighed in at 52lbs and is one of the only receivers made in the below $1500 price range that could actually drive all channels at its rated output its replacement the 806 and now the 807 only weigh 40lbs because Onkyo cut back on the size of the PS and they both fail the driving all channels driven test and lost there THX Ulta2 certification because of it. Most receivers if not all in that range weigh less then 40lbs and the power supply is the main weight of a receiver.

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