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Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote joyrides Quote  Post ReplyReply Direct Link To This Post Topic: crest 8001
    Posted: 28 August 2009 at 4:48pm
  
             need to confirm will crest8001 per ch 4ohms drive 2pd1850 per side?
                                           joyrideStar
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Post Options Post Options   Thanks (0) Thanks(0)   Quote csg Quote  Post ReplyReply Direct Link To This Post Posted: 28 August 2009 at 5:13pm
It will certainly drive them, but not quite to their limit. Lovely sounding bass amp though
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 28 August 2009 at 5:51pm
Maybe not to the limit but still quite a lot of level.  More than the specs suggest.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote csg Quote  Post ReplyReply Direct Link To This Post Posted: 28 August 2009 at 6:45pm
And, to be honest, you are far better off giving drivers a little less, than a little more, all you usually get is more heat in your coils, and more compression. Crest p series are certainly capable of the output full time, and the clip limiters are fairly good.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote joyrides Quote  Post ReplyReply Direct Link To This Post Posted: 28 August 2009 at 7:58pm
            
          cheers ladsClap
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 28 August 2009 at 8:10pm
Originally posted by csg csg wrote:

And, to be honest, you are far better off giving drivers a little less, than a little more, all you usually get is more heat in your coils, and more compression. Crest p series are certainly capable of the output full time, and the clip limiters are fairly good.



Hmmm.

I would prefer to have an amp capable of delivering  2kwpc @ 4 ohms stereo into 2x 1850s per.

Less chance of amp feeding your drivers a nice coil frying clipped squarish wave, because you've run out of headroom, and its started clipping.

Apparentlt an EV P3000 is a little better for this task, but not as good as 5000VZ.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 28 August 2009 at 8:42pm
Ok, a few bits of info for you Lev about the 8001.

Firstly, I've bench tested mine and they actuall produce more like 1800W into 4Ohms, not the 1200W on the spec sheet.

Secondly, anyone who uses Crest amps will know that unless you're clipping further down the signal chain you can't use them to drive a square wave into your drivers.  The clip limiters are very good and are designed specifically to stop that situation.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote csg Quote  Post ReplyReply Direct Link To This Post Posted: 28 August 2009 at 8:50pm
they do indeed, back in the days when i was using 8001's ( and i think you might have had my last one Chris), they used to power 2 1850 bins per ch fine, slightly louder than running 4 bins per ch off a 9001 which we also used to do regularly.
Getting a p series to generate square waves is fairly difficult, and you will probably reach the thermal limit before that point - certainly that used to be the case when running at 2 ohms
 
If they were not so darn heavy, i would have never changed from the p series kit
 
oh, and finally i am not in the habit of running amps past their limit - therefore there is no danger of burning drivers out from clipped signals.


Edited by csg - 28 August 2009 at 8:54pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 28 August 2009 at 8:54pm
Originally posted by ceharden ceharden wrote:

Ok, a few bits of info for you Lev about the 8001.

Firstly, I've bench tested mine and they actuall produce more like 1800W into 4Ohms, not the 1200W on the spec sheet.



That is not both channels driven, as I know plenty of people who have sold their 8001s, and upgraded to EV P3000/5000VZ, stating these deliver more sub.

HMSS/Rensaab can confirm this.

MA3600 will eat 8001 on sub, and that delivers no where near 1800wpc @ 4 ohms stereo. LOL


Edited by levyte357 - 28 August 2009 at 8:57pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote csg Quote  Post ReplyReply Direct Link To This Post Posted: 28 August 2009 at 9:11pm
well, i guess it depends on your expectations. For me, most of my work revolves around overall quality of sound rather than meat grinding bass, so its horses for courses. The 8001 is, however you look at it, a very capable bass amp, but as you state, there are amps out there capable of louder sub performance
the macrotec effect on sub compared with the cleaner sound of crest has been discussed ad infinitem, and at the end of the day, it is simply personal taste and choice - there is no correct answer, its simply what works for you
 
but, to return to the original question, the 8001 is perfectly capable of driving 2 1850's per channel delivering good, but not full output.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 28 August 2009 at 9:31pm
Originally posted by csg csg wrote:

well, i guess it depends on your expectations. For me, most of my work revolves around overall quality of sound rather than meat grinding bass, so its horses for courses. The 8001 is, however you look at it, a very capable bass amp, but as you state, there are amps out there capable of louder sub performance


Thinking about it, it is actually misleading for someone to say an 8001 will do 1800W @ 4 ohms, without actually stating that was into a dummy load, 1x channel driven, and if it was at 1khz or 50hz.

As it suggests it can compete with Crown 5000VZ, CA18, An Inf7mk2, 5000VZ, MA3600, Nathon HI-1400, Void Network 4, which will all power 2x 1850s per channel very well.


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Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 28 August 2009 at 9:56pm
Give me an 8001 over an MA3600 or even possibly a MA5000 any day.....
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