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CREST Pro 9001 - 4 ohm performance

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MarjanM View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MarjanM Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2017 at 3:30pm
How is that irrelevant?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bass*en*mass Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2017 at 3:49pm
hmm, in my simple mind its logical, an amp thats designed to provide max. power at say 4ohm will beat an amp designed for max. power at 2ohm on same supply and impedance, on stronger supply the latter will most likely exceed the other amps output on low impedance as its designed to draw more current/work safely at low impedances? (psu, fets quality/amount, "design/layout")



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MarjanM View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MarjanM Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2017 at 3:55pm
It would be like that if all things are equal. But let the amp limiter release a little bit more power and you gain like 2-3% more THD and presto, you have way louder sounding amp.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bass*en*mass Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2017 at 4:23pm
yep, i agree..
i must say i quite like the "dry" controlled sound of the K10s for example..

after all it is and will always be horses for courses lol, gladly "sound" is very subjective :)
would be boring if we all had the same opinion..





Edited by bass*en*mass - 16 February 2017 at 4:35pm
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MarjanM View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MarjanM Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2017 at 4:33pm
All true, i just want people to know the facts. That amp with just a little more distortion will sound louder, dough it actually isnt.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2017 at 7:44pm
Originally posted by MarjanM MarjanM wrote:

All true, i just want people to know the facts. That amp with just a little more distortion will sound louder, dough it actually isnt.


Yup. Crest soft-clip is very good - cuts out the distortion.


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Post Options Post Options   Thanks (0) Thanks(0)   Quote kedwardsleisure Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2017 at 8:03pm
Quote how does the plug its got on the end make a difference to the amps performance


It doesn't. The mains will always give as much as the amp needs until the fuse or breaker goes.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2017 at 8:25pm
Originally posted by kedwardsleisure kedwardsleisure wrote:

Quote how does the plug its got on the end make a difference to the amps performance


It doesn't. The mains will always give as much as the amp needs until the fuse or breaker goes.



Yep. Whether the voltage remains constant is a different matter but if you're on a 13 amp plug and you're not tripping a breaker or blowing a fuse, you aren't pulling more than the breakers trip point. It doesn't matter if the connection hung from say a 32 amp B curve breaker is a bank of 13a sockets or a 32a ceeform - the former you just have an extra fuse to consider and if that doesn't blow then you're not pulling more.

But we'll get into this distortion argument again without people understanding that certain order harmonics are often desirable for certain sounds, including perceived loudness.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote nickyburnell Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2017 at 11:36pm
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But we'll get into this distortion argument again without people understanding that certain order harmonics are often desirable for certain sounds, including perceived loudness.[/QUOTE]


Yep, 100%.  But to add to that, the holy grail of flat response really isn't what any form of EDM is about, that's for hi-fi or nerds, or people that only listen to classical.......IMHO
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 17 February 2017 at 12:08am
If you like your sound clean and accurate, go Crest.  If you prefer something more like an arc welder, go Crown.  Simples!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote B_Bender Quote  Post ReplyReply Direct Link To This Post Posted: 17 February 2017 at 9:04am
Originally posted by toastyghost toastyghost wrote:

Originally posted by kedwardsleisure kedwardsleisure wrote:

Quote how does the plug its got on the end make a difference to the amps performance


It doesn't. The mains will always give as much as the amp needs until the fuse or breaker goes.



Yep. Whether the voltage remains constant is a different matter but if you're on a 13 amp plug and you're not tripping a breaker or blowing a fuse, you aren't pulling more than the breakers trip point. It doesn't matter if the connection hung from say a 32 amp B curve breaker is a bank of 13a sockets or a 32a ceeform - the former you just have an extra fuse to consider and if that doesn't blow then you're not pulling more.

But we'll get into this distortion argument again without people understanding that certain order harmonics are often desirable for certain sounds, including perceived loudness.

Originally posted by levyte357- levyte357- wrote:

I've seen Crest 9001 on stiff 32A supply, powering 4x cabs many times,  and amp was always clipping before drivers were fully powered.

Spec says 2kwpc @ 4 ohm, which lines up, with what I've seen.

Inf8MK2 on 32A, at 4 ohm stereo, could easily have sent the voice coils into the upper stratosphere.
In fact, it is like that on decent 13A supply.



 

but I don't get how being on a 32a supply seems to be better for the amps performance?


Edited by B_Bender - 17 February 2017 at 9:05am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote m0gsi Quote  Post ReplyReply Direct Link To This Post Posted: 17 February 2017 at 10:40am
A 32a socket is likely to be wired to the building incoming electricity supply with a larger lower resistance cable therefore less voltage drop when the amplifier is drawing high peak current. 


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