wuzzzer Posted August 14, 2006 Share Posted August 14, 2006 I sold the item that I was going to use to fund the purchase of a new amp/receiver. I found a few Harman Kardon HK3480 two channel receivers for sale on eBay. I picked one up that is only 2 months old in brand new condition for buy-it-now of $175. I thought the specs looked really good: Stereo Mode : Continuous Average Power (FTC) Per Channel : 120 Watts per channel, 20Hz 20kHz @ <0.07% THD, both channels driven into 8 ohms 150 Watts per channel, 20Hz 20kHz @ <0.2% THD, both channels driven into 4 ohms Input Sensitivity/Impedance Linear (High-Level) : 200mV/47k ohms Signal-to-Noise Ratio (IHF-A) : 95dB Frequency Response at 1W (+0dB, 3dB) : 10Hz 110kHz High Instantaneous Current Capability (HCC) : ±45 amps Transient Intermodulation Distortion (TIM) : Unmeasurable Rise Time : 16µsec Slew Rate : 40V/µsec I'm not sure what the TIM, Rise Time or Slew rate refer to, but I think the high current design and 150 watts continuous at 4 ohms will be a nice complement to my RF-7s. I still need to sell my Sony receiver and I think with the leftover money I'll buy some acoustic room treatments. Quote Link to comment Share on other sites More sharing options...
Jordan Posted August 15, 2006 Share Posted August 15, 2006 Ummm, aren't RF7's 8 ohm speakers? Quote Link to comment Share on other sites More sharing options...
Jordan Posted August 15, 2006 Share Posted August 15, 2006 Umm, aren't RF7's 8 ohm speakers? Quote Link to comment Share on other sites More sharing options...
DrWho Posted August 15, 2006 Share Posted August 15, 2006 Yes they are...with a minimum impedance below 3 ohms [] Quote Link to comment Share on other sites More sharing options...
SET12 Posted August 15, 2006 Share Posted August 15, 2006 HK has made some really nice stuff over the years I'm sure you'll be happy with the reciever. I owned a PA2200 for a number of years 100 watts/channel a really nice warm sounding power amp I gave it to a buddy he wanted more power bought a Crown DC300 needless to say he was disappointed with the Crown and it has gone to the closet! The HK is so nice I once could not tell it apart from a 3000$ Classe power amp that had twice the power! SET12 I stand corrected it maybe a Citation 24 Quote Link to comment Share on other sites More sharing options...
Jordan Posted August 15, 2006 Share Posted August 15, 2006 Minimum impedance below 3 ohms? Tell me more please. Quote Link to comment Share on other sites More sharing options...
formica Posted August 15, 2006 Share Posted August 15, 2006 I found a few Harman Kardon HK3480 two channel receivers for sale on eBay. I'd also be looking for an inexpensive (±400$) 2.1 channel receiver to drive a spare pair of Khorns. I'd be curious to how it performs as there are some pretty good deals on refurbished HK through their own web store. I'm looking for something which does have a built in xover to drive my sub amp... and just basic video switching would be nice (ie: DVD, Satellite, and VCR ... but TV has only one AV input). I would have liked a simple 2 channel integrated... but similar to you, my requirements push me into a different category. ROb Quote Link to comment Share on other sites More sharing options...
wuzzzer Posted August 15, 2006 Author Share Posted August 15, 2006 Minimum impedance below 3 ohms? Tell me more please. At at least two different points on the 20Hz to 20kHz spectrum the RF-7s dip down to 2.8ohms. As a result, they really shine with a high current, low impedence amplification system. Quote Link to comment Share on other sites More sharing options...
DrWho Posted August 15, 2006 Share Posted August 15, 2006 Rob, you might check out the RR2150 from Outlaw Audio...it's got some cool bass management built into it. http://www.outlawaudio.com/products/rr2150.html (on page 15 of the manual, which can be found at that link). As far as the RF-7s...doensn't the impedance dip down to 2.8 ohms? It gets mentioned quite often on the forum and I'm not sure what the original source of the information is. The conclusion being that a "4-ohm stable" amplifier is required (since most 4 ohm speakers have low dips like that). Quote Link to comment Share on other sites More sharing options...
oldbuckster Posted August 15, 2006 Share Posted August 15, 2006 Congrats...........Enjoy your new unit...........would be interested in a comparision of the two after you have had it for awhile............same watts per channel.......fair fight.......if you don't mind doing that..............have fun listening to those old albums that always sound new with new equipment................many listening hours ahead................Relax and Enjoy.......... Quote Link to comment Share on other sites More sharing options...
wuzzzer Posted August 15, 2006 Author Share Posted August 15, 2006 Congrats...........Enjoy your new unit...........would be interested in a comparision of the two after you have had it for awhile............same watts per channel.......fair fight.......if you don't mind doing that..............have fun listening to those old albums that always sound new with new equipment................many listening hours ahead................Relax and Enjoy.......... Thanks! I'm very excited to get it. It has both pre-outs and a separate sub-out, so I thought that was great in terms of flexibility. I think I'll really like it, especially for the price I paid. Quote Link to comment Share on other sites More sharing options...
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