mmantzaris Posted January 23, 2009 Share Posted January 23, 2009 WHAT ARE THE SPECS OF THIS CREST AUDIO 4000 PROFESSIONAL SERIES AMP? DO YOU RECOMMEND HOOKING THIS UP TO MY KLIPSCH CHORUS II'S Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted January 23, 2009 Share Posted January 23, 2009 No harm in giving it a listen. Careful with the volume, though, you've got a powerful beast in that amp. Being made to put out so much power, it may not have a good clean first watt. You'll be able to tell as you listen. Chorus is a sensitive speaker. Quote Link to comment Share on other sites More sharing options...
Marvel Posted January 23, 2009 Share Posted January 23, 2009 It might be grand overkill. Depending on where the amp is located, the fans may be too noisy for you. Is this a CC series amp? Crest Audio Quote Link to comment Share on other sites More sharing options...
kouack Posted January 23, 2009 Share Posted January 23, 2009 What about Crestaudio dot com if youare asking about the CC4000 exact same as peavy CS4000. 8 Ohm Stereo - 800 W 4 Ohm Stereo - 1350 W 2 Ohm Stereo - 2000 W 4 Ohm Bridged - 4000 W Toroidal power transformer Magnetic circuit breaker on/off switch Cooled by variable speed fan with back-to-front airflow Mode selector switch for stereo, parallel and bridged-mono operation Inputs: Balanced female XLR, 1/4" TRS combi jacks Outputs: Speakon® and five-way binding posts Recessed, stepped attenuators 16-gauge steel chassis, cast aluminum front panel Five-year warranty Quote Link to comment Share on other sites More sharing options...
Speedball Posted January 23, 2009 Share Posted January 23, 2009 800 W @ 8 ohms is a whole lot of juice. Quote Link to comment Share on other sites More sharing options...
cjgeraci Posted January 23, 2009 Share Posted January 23, 2009 The question is how sensitive is the amp (or how easy to drive with consumer gear, such as a receiver or consumer prepro). Otherwise, 800 W of pro amp will not mean much if the amp is a bad match for consumer stuff. I would personally look at QSC is you want to go pro since most of their amps are pretty compatible with consumer gear. Carl. P.S. I tried a Peavey CS in my setup without any success. Either it was hard to drive or not functioning properly. Quote Link to comment Share on other sites More sharing options...
djk Posted January 24, 2009 Share Posted January 24, 2009 The Crest professional series 4000 is a very old amplifier, but very good. http://www.crestaudio.com/media/schematics/3000-4000%20SchematicSet.pdf IIRC, it's rated at 300W/8R, 500W/4R, 700W/2R http://cgi.ebay.com/Crest-Audio-4000-Amplifier_W0QQitemZ200294627832QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item200294627832&_trksid=p3286.c0.m14&_trkparms=66%3A2%7C65%3A13%7C39%3A1%7C240%3A1318 Quote Link to comment Share on other sites More sharing options...
philipbarrett Posted January 24, 2009 Share Posted January 24, 2009 By all means have fun with your "pro" amp but remember, the design criteria used in amplifiers built for heavy duty use do not always put audio fidelity first! Extreme reliability, road worthiness & heat dissapation will rate as high if not higher on the designers' mind. In addition, many early Crest models had HF limiting circuits built in to help control the amplifier when used as the high end drive in an actively crossed system. On the up side - have you looked at the transformer in that thing? Now that's some iron. Quote Link to comment Share on other sites More sharing options...
djk Posted January 25, 2009 Share Posted January 25, 2009 "By all means have fun with your "pro" amp but remember, the design criteria used in amplifiers built for heavy duty use do not always put audio fidelity first!" Perhaps true as a general statement, but not in this case. "In addition, many early Crest models had HF limiting circuits built in to help control the amplifier when used as the high end drive in an actively crossed system." A quick look at the schematic (linked) shows only RFI filtering, above 100Khz. "On the up side - have you looked at the transformer in that thing? Now that's some iron." A very solid amplifier, and sounds better than 99% of hi-fi amps too. All the caps in the signal path have film bypasses, and the power supply has both mid-sized electrolitic and small film bypass caps. Quote Link to comment Share on other sites More sharing options...
kouack Posted January 25, 2009 Share Posted January 25, 2009 4 pages but interesting reading about pro amp VS high end, a guy bough a PL340 from QSC and compares it to Krell,Mac and classe interesting result http://media.qscaudio.com/forum/viewtopic.php?f=2&t=2679&st=0&sk=t&sd=a Quote Link to comment Share on other sites More sharing options...
philipbarrett Posted January 25, 2009 Share Posted January 25, 2009 djk you're right, I believe the HF protection was in the (also excellent) 5/7/8000 models. These amps were made back in the day when Crest was a highy respected niche manufacturer of serious pro-touring amps. I had a very large Turbosound rig out for some years that was all 8000 powered, very nice it was too. 24" driver in the subs no less! Quote Link to comment Share on other sites More sharing options...
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