Bi-amping the RTi A5 ......
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hey guys,
this is my first post here on this forum so i hope i am doing this right
first of all i would like to say that hi to everyone and congratulate you guys on an awesome forum with interesting reads. everyone seems to be so helpful here. i was just wondering if it would be worth my while to wire my RTi A5's with a bi-amp configuration. i am using an Onkyo 575 receiver with a PS3 as a bluray. how will i set this up on the amp and which speaker terminals would i use on the amp? -
Yes, I have removed the jumpers.Receivers that offer bi-amping option actually convert the power intended for surround back to the tweeters.There was considerable improvement in the bass when the a5's were bi-amped, which convinced me to believe that a single receiver that can do bi-amp has the same capability to deliver clean power as those separate ones. We know that the power being fed to the speakers is essentially the same as when they were not bi-amped. Simply put,* 1 + 1 (bi-amped) = 2 (normal).but the difference is made because there is less impedance to each of the wires delivering specific power to specific frequency. voltage intended for high frequency does not get adulterated by voltage intended for low frequency or vice versa when a broad spectrum of frequency is required to be played.this principle is also the one responsible for the improvement in the sound when bi-wiring is used.but bi-amping has the greatest advantage because first, the impedances caused by specific voltage does not affect the delivery of the power to each of the drivers. and second, there is substantial headroom for the power to remain clean as it is being fed to the drivers. clean power necessarily translates to greater fidelity.all in all bi-amping > bi-wiring > normal connectionHowever, I am just puzzled why the high frequency becomes terribly bad when bi-amping the rti a5.comfortablycurt wrote: »It sounds like something may have been wrong here.* The tweeters still should have been every bit as loud.Did you make sure to remove the jumpers between the two pairs of binding posts when you had them bi-amped?The fact that they have 5-way binding posts wouldn't have any bearing on whether or not they're bi-ampable.* That just refers to the fact that they can accept 5 different connection methods.Also, the speakers are most definitely bi-ampable.* It's not as if all bi-amping is a bad thing.* It's bi-amping with an AVR's surround back channels that is the problem.* It's not really even bi-amping.When you bi-amp with multiple external power amps...there can be some HUGE benefits. -
Karzai,
I've been having this problem for a year. It's not your speakers, it's the Onkyo. I bet you're using either a PCM or analogue source and either direct, stereo, or pure audio mode. With any of those combinations, the 707 does not output the surround back under those conditions, which seem to me to be a defect. Try DTS surround sens, which only outputs to LR but the muffled sound is gone. The same is true for any of the surround DSPs.
I finally discovered this last night and will be contacting Onkyo. I'm running firmware 1.18, which is pretty recent. My experiences with Onkyo technical support in the past haven't been positive, so I'm not expecting much, but I hope they acknowledge this as a known issue. I'll keep you updated.
