Receiver/Amp Recommendations for Klipsch RF-7 II System - AVS Forum
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post #1 of 14 Old 03-29-2012, 01:49 PM - Thread Starter
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I'm going to have a complete RF-7 II speaker system soon including:

(2) RF-7 II Floorstanding Speakers:
NOMINAL IMPEDANCE: 8 ohms compatible
POWER HANDLING: 250W RMS / 1000W Peak
SENSITIVITY: 101dB @ 2.83V / 1m

(1) RC-64 II Center:
NOMINAL IMPEDANCE: 8 ohms compatible
POWER HANDLING: 200W RMS / 800W Peak
SENSITIVITY: 99dB @ 2.83V / 1m

(2) RS-62 II
POWER HANDLING: 150W RMS / 600W Peak
SENSITIVITY: 97dB @ 2.83V / 1m
WEIGHT: 22.7lbs (10.3kg)

(1)SW-115 Sub:
AMPLIFIER POWER: 400 watts continuous @ <2% THD / Dynamic Power*: 800 watts
VOLTAGE: 100-120V / 220-240V~50/60Hz 4A (Auto-voltage switching) with 1 Watt standby

I was hoping to get some recommendations for a receiver/amp combo or receiver to sufficiently power these.

I was thinking perhaps a Marantz AV7005/MM7055 combo. Would this be a good choice?
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post #2 of 14 Old 03-29-2012, 05:03 PM
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Given the (very) high sensitivity of your speakers, you don't need much power at all (fraction of a watt per channel to take your head off). Pick any competent receiver that has suitable features for your tastes and be done with it; something like the Denon 4311 or Yamaha A2000 will be no problem at all (and drive probably just as much power as the 7055). If you like Marantz, the SR7005 would be fine. You can really get away with even less expensive componentry than that, if you'd like.
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post #3 of 14 Old 03-29-2012, 09:00 PM - Thread Starter
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Thanks for the assistance!

These speakers are pretty powerful though, right?

Out of curiosity, what kind of set up WOULD warrant an amp such as the XPA-5, etc?
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post #4 of 14 Old 03-30-2012, 04:07 PM
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Quote:
Originally Posted by RocknRolla View Post

Thanks for the assistance!

These speakers are pretty powerful though, right?

Out of curiosity, what kind of set up WOULD warrant an amp such as the XPA-5, etc?

The speakers you've picked are very sensitive, which means they get very loud with very little input power. That means you don't need as much amplifier grunt.

Honestly I'm not really sold on a 200wpc amplifier - a quality AVR can give you 100wpc (and 3 dB is nothing to write home about, even 6 dB is not a lot to write home about), and 1000wpc is expensive and most speakers can't survive it. Where larger amplifiers tend to make sense though, as a general rule, is with insensitive speakers (some of the "audiophile" models that are 83 or 85 dB/W), very large rooms/spaces (but again, 3 dB is nothing to write home about), or speakers that have very low impedance dips (which doesn't require a powerful amplifier, it just requires an amplifier that can deliver enough current; something like the XPA-5 can, many receivers cannot).

Your speakers don't fit into that, even if your room is large-ish, because they're so sensitive. 1wpc input into those mains is going to be loud enough to cause hearing damage, and easily exceed reference level, unless you're sitting quite a ways back (like 20 ft).

Have some reading:
http://www.physics.mcgill.ca/~guymoo.../lecture11.pdf
http://www.physics.mcgill.ca/~guymoo.../lecture13.pdf
http://myhometheater.homestead.com/splcalculator.html
http://audiokarma.org/forums/showthread.php?t=58829
http://www.innerfidelity.com/content/loud-music-sucks
http://www.osha.gov/pls/oshaweb/owad...ards&p_id=9735
http://www.ccohs.ca/oshanswers/phys_..._auditory.html
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post #5 of 14 Old 07-05-2012, 07:31 PM
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I have the marantz sr7005 and the rf7 ll and rf64ll center, great combo! The rf 7 ll's just keep getting better, I only have about 20 hours on them, just got them yesterday:D
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post #6 of 14 Old 08-29-2012, 09:32 AM
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I have a XPA3 that I plan on running my RF-7's and RC-64 with. Will that be too much power for the speakers?
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post #7 of 14 Old 08-29-2012, 10:06 AM
 
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Quote:
Originally Posted by bermise View Post

I have a XPA3 that I plan on running my RF-7's and RC-64 with. Will that be too much power for the speakers?

The RF-7 II are rated 250w continuous, with peak at 1000w and the RC-64 II are rated 200w with peak of 800w and the XPA-3 is rated 200w continuous. You're good.

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post #8 of 14 Old 08-29-2012, 10:10 AM
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Originally Posted by BeeMan458 View Post

The RF-7 II are rated 250w continuous, with peak at 1000w and the RC-64 II are rated 200w with peak of 800w and the SPA-3 is rated 200w continuous. You're good.

Good to know, thanks for the reply. After reading about some RF-7 hissing/static issues, I got a little nervous!
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post #9 of 14 Old 08-29-2012, 10:18 AM
 
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Quote:
Originally Posted by RocknRolla View Post

I was hoping to get some recommendations for a receiver/amp combo or receiver to sufficiently power these.

I was thinking perhaps a Marantz AV7005/MM7055 combo. Would this be a good choice?

I'm running an SR5007 into a set of Klipsch, Epic, CF-3's which are the older brother to the RF-7 II's. The CF-3's have a stated sensitivity of 100dB 1w/m, 250w continuous/1000w peak. Yes, your stated combination would be a good match but my opinion, price wise, you'd be equally well served getting a basic receiver like a Marantz SR5007 with a full set of 7.1 pre-outs and an Emotiva XPA-5. I would recommend using the money saved to buy a second sub.

As to what choice in an AVR, it depends on the size of the room and what your stated listening levels are going be. Are you going be listening to what one might consider to be "NORMAL" loud listening levels or are you trying to reach THX "reference" listening levels?

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post #10 of 14 Old 08-29-2012, 10:18 AM
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Quote:
Originally Posted by bermise View Post

Good to know, thanks for the reply. After reading about some RF-7 hissing/static issues, I got a little nervous!

You still may have some hissing/static issues, but it isn't the RF-7s or that you are overpowering them with the XPA-3.
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post #11 of 14 Old 08-29-2012, 07:03 PM
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Originally Posted by Zen Traveler View Post

You still may have some hissing/static issues, but it isn't the RF-7s or that you are overpowering them with the XPA-3.

I know, I have read about others with these problems and I hope I do not come across the hissing. I will find out next week when the speakers arrive.
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post #12 of 14 Old 10-22-2013, 05:50 PM
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Ok i got a good question i own 80 watt onlyo receiver.It has not pr out's it's a basic receiver.i had it for about wow since 2008.maybe even 2007.I use to own bose .Now i am a audio lover for the most part.Hell i wont play a movie with out surroudn sound.And not even abluray lol.What i would like to know is this will 80 watt's be ok for my RF-7 II and RC-64 II and RS-62 II.My quess is no i have a feeling i might blow up the horn loaded tweeter.I mean that is what the guy on klipsch told me .I just want to get more answer's from other people like your self.Can u let me know or anyone can someone help me.
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post #13 of 14 Old 10-22-2013, 05:52 PM
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U can fix that hissing with a power panamax condisinor.There not much it all depends on which one u get.Look into the 5300 from panamax or the 5100.
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post #14 of 14 Old 10-22-2013, 10:59 PM
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I use a Pioneer Elite avr for my RF 7 system. I have a Yamaha M 80 and Carver M 400 for the mains and center respectively. As others have said you may or may not need any external amplification. With music, even playing very loud, you will rarely exceed 40 watt. Movies in a HT setup will require more than 40 watts. I have seen the meter on my main go as high as 180 watt at reference level will is not a normal enjoyable level. My Pioneer avr can swing around 270 watts for movie dynamic. I may not need my amp but, they are for keeps.

The nice thing about the Pioneer/Yamaha/Carver combo is that it is dead quiet with a nice black floor for music.

Klipsch RF 7 based HT 7.4, Pioneer SC 35, Acurus 200 Five, Dayton 18 Ultimxa Dual Sub Cab(2), Dayton 18 Ultimax Large Vented Sub Cab (2), on Berhinger I Nuke DPS amps, Samsung BDP F 7500, Asus/My Book Live HPC 4 TB

Yaquin VK 2100 amp, McIntosh XR 5 speakers, Samsung BDP F 7500
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