Polk RTi A9 vs. Energy CF70 - Page 2 - AVS Forum
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post #31 of 36 Old 07-29-2012, 03:11 PM
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Why dont you try out the A9s in the standard config first, and see if you are happy with them as-is. Depending on how they sound to you, you can decide where next to spend your dollars, if at all.

Do not be in a rush and make decisions without even hearing them out in your current setup.
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post #32 of 36 Old 07-29-2012, 05:02 PM
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Quote:
Originally Posted by kemetblk View Post

thanks to everyone for the replys! i decided to go with the A9's and the CSi A6, a little more than i wanted to spend after shipping ($813) but i trust the advice on these boards.
now i'm just worried about powering them. i have a SVS PB12-NSD so i plan on crossing them over at 60hz. i'm worried that my SR6006 wont be able to push them properly and was wondering would bi-amping help or hurt? also, any recommendations on a decent amp, preferably less than $350?

Passive bi-amping (without using an active crossover) has very little benefit. You'd probably have more success by crossing your speakers at 80hz, and letting the sub do the heavy lifting. Most of the power consumed by speakers is used in the lower frequencies, so the more of that you push to the sub, the less your AVR will have to put out. 80hz is the THX recommended crossover, BTW.

As to a seperate amp, you will probably need to increase the budget a bit. You can get a Emotiva XPA-3, which is 200wpc into 3 channels for a bit over $600 right now. The Marantz Sr-6006 puts out about 70 wpc into 5 channels at 8 ohms, so to really see a difference, you need to look at a big amp, and, even then, you will probably only notice a difference at higher volumes.

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post #33 of 36 Old 07-29-2012, 07:56 PM
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I have the A7s and I think they are awesome!!!! Just read the reviews. Some say the A9s are better, but I really don't care because the a7s are that Good. They don't lack in the mid range to me. That one 6 1/2 woofer is very accurate and it puts out some beautiful sound!
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post #34 of 36 Old 07-30-2012, 04:20 AM
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I also have the a7's and auditioned them along side the a9's. With my amp (denon 3808ci) the a7's were better. The 9's are very power hungry. a7's with the csi a6 are awsome!

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post #35 of 36 Old 08-06-2012, 10:39 AM - Thread Starter
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Quote:
Originally Posted by toslat View Post

Why dont you try out the A9s in the standard config first, and see if you are happy with them as-is. Depending on how they sound to you, you can decide where next to spend your dollars, if at all.
Do not be in a rush and make decisions without even hearing them out in your current setup.


Thanks for the advice. I tend to take my time and do tons of research before making a purchase, but once i get something I become a total impulse buyer on upgrades. They sound great with just my AVR (even better after bi-amping). I do feel that they are being restrained (particularly in 5.1 at very high volume) but I can wait on the amp till at least next year easily.

Thanks to everyone who responded. I had no experience with Polk and was worried about buying them since I couldn't audition them. You all were extremely happy with yours and that gave me the confidence to pull the trigger. Thanks again!

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F/C/R: Polk RTi A9's / CSi A6 / Speakercraft AIMWIDE 3

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post #36 of 36 Old 08-06-2012, 10:45 AM
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Biamping using only the receivr will not give you any advantage. All you'll do is waste speaker wire. Try it if you'd like to quench your curiosity.

With a nice sub in the mix the load on your receiver shoudn't be bad at all. The RtiA9 has a 90db sensitivity rating which is fairly easy to handle by any receiver. I don't think you'll have a problem with your Marantz SR6006 which is a very capable receiver.

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