Hi folks, is it ok to attach my SDA CRS+'s to an HK 730? And how about a Marantz 2245? I'm using the original interconnect on the speakers. Just trying to play it safe with this vintage gear. Thanks!
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Hi folks, is it ok to attach my SDA CRS+'s to an HK 730? And how about a Marantz 2245? I'm using the original interconnect on the speakers. Just trying to play it safe with this vintage gear. Thanks!
I'd say yes. A separate amp is always going to make em sing a lot better and some here swear by the tube amps, so just enjoy and upgrade as you go. The SDA effect is in a class all by itself and I sure love mine. I had the CRS+ set for a while and they are a great little speaker! BTW, welcome to the forum, It's a great one!
1. Are the amplifier sections common-ground?Quote:
Originally Posted by wellthisisnice
2. Are they rated to drive a 4-ohm nominal load?
As opposed to integrated?Quote:
Originally Posted by tophatjohnny
2245: Probably.Quote:
Originally Posted by Schurkey
HK730: I don't know. It's twin powered, dual mono. This is really my main question. I was hoping someone might have experience with this particular pairing of amp and speakers.
Barely, and barely. But yes. And the owner's manual for the CRS+ states a nominal impedance of 6 ohms, not 4.Quote:
Originally Posted by Schurkey
Like separates, it all depends on the quality. There are integrated amps that are better than separates and vice versa. That said, integrated's or separates are better than receivers.Quote:
As opposed to integrated?
Dual mono would indicate that it is non-common ground and therefore cannot be used with your SDA's unless you use the AI-1.Quote:
HK730: I don't know. It's twin powered, dual mono.
Here read this. http://www.polkaudio.com/forums/show...Common-ground&
The HK amp should be fine.
I am using a Harman Kardon 730 'Twin Powered' with a pair of SDA CRS+'s in the bedroom set-up for the last month and a half and it sounds amazing. I guess I got lucky and didn't even think to check the common ground issue before hooking them up. 40 Watts have never sounded so good, at least not in my home. I'll admit I am in love with that contour button, HK's equivalent to a loudness button that tapers away as the volume is turned up. Contour keeps it sounding full and rich when the volume is down low. At some point I'll have to replace bulbs as most of them are burned out but for now she works and works well and that's enough for me. I'll post a picture soon.
Attachment 81685
Polk Audio SDA CRS+ (all original someday I'll do the upgrades and wonder why I took so long to do them, w/stands)
Harman Kardon 730 Twin Power, 40 watts and 29 lbs
Kenwood CD changer with variable output (volume remote control capability)
Denon DP-11F needs stylus...
DIY J-pole antenna hidden under cabinet gives me pretty good FM reception
Awesome, everyone. Great forum you have here. Thanks tx_polkhead for blazing the trail!