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Crest CC4000? Crown XTI4000? Crest CD3000 [message #277376]

Mon, 31 December 2007 04:11

Josh Billings is currently offline

Josh Billings
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Crest CC4000
Crown XTI4000
Crest CD3000

All of these amps are pretty much exactly what i need (about 1400 amps at 4 ohms), but i'm curious if anybody has eny experience with these for subwoofers and like low impedence loads.

For instance the QSC PLX Series just did not sound very good on Subs in my opinion, but the PL6 sounded great. I just want something with a clip light indicator of i'm throwing too much power at my subs so i minimize the risk of blowing them.

As always your opinion is highly appreciated

-Josh Billings

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Re: Crest CC4000? Crown XTI4000? Crest CD3000 [message #277389 is a reply to message #277376 ]

Mon, 31 December 2007 07:56

Don Boomer is currently offline

Don Boomer
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I doubt you'd hear much difference with any of these amps.

I just want something with a clip light indicator of i'm throwing too much power at my subs so i minimize the risk of blowing them.

I think what you really need here is a limiter and the proper HP filter. By the time you see a clip light you are probably already in trouble.

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Re: Crest CC4000? Crown XTI4000? Crest CD3000 [message #277395 is a reply to message #277376 ]

Mon, 31 December 2007 08:57

Tim Koskamp is currently offline

Tim Koskamp
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Here Often

In one scenario I was using a XTi4000 into a 4 ohm bridged load. The amp did not react well most of the time to that impedance. The same load on a PLX3402 worked fine. It's a tough load, but it was a disappointment the Crown wasn't a replacement for the QSC.

So if you like how a PL6 worked and don't like a PLX series amp, I wouldn't be looking at switching amps that are about that same price point as a PLX. There is a limit to how good a power supply you can get for that amount of money.

I have no experience with the Crest CC or CD. You may want to consider the Crest Pro 200 series. Good bang for the buck at a price not that much higher than what you are looking at. Do a search on PSW to see what others have already said.

Tim Koskamp

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Re: Crest CC4000? Crown XTI4000? Crest CD3000 [message #277434 is a reply to message #277389 ]

Mon, 31 December 2007 11:06

Josh Billings is currently offline

Josh Billings
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Don Boomer wrote on Mon, 31 December 2007 05:56

I think what you really need here is a limiter and the proper HP filter. By the time you see a clip light you are probably already in trouble.

I have limiters and HP filters, i just need a light to say "Hey We're throwing about 1400 watts (Peak) at your boxes right now....might want to back it off a bit. I don't think i'll ever be able to get enough bass, so it's about operating within a fairly safe power for the boxes (800 watts RMS).

-Josh Billings

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Re: Crest CC4000? Crown XTI4000? Crest CD3000 [message #277477 is a reply to message #277376 ]

Mon, 31 December 2007 12:59

Tom Reid is currently offline

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Josh Billings wrote on Mon, 31 December 2007 04:11

Crest CC4000
Crown XTI4000
Crest CD3000

All of these amps are pretty much exactly what i need (about 1400 amps at 4 ohms), but i'm curious if anybody has eny experience with these for subwoofers and like low impedence loads.

For instance the QSC PLX Series just did not sound very good on Subs in my opinion, but the PL6 sounded great. I just want something with a clip light indicator of i'm throwing too much power at my subs so i minimize the risk of blowing them.

As always your opinion is highly appreciated

-Josh Billings

An xTi will push about 3200w into 4 ohms bridged ...if properly fed.
I used them on some JBL 728s a few times, and switched back to XS1200s.

tom

"The fact that people don't understand you doesn't make you an artist"

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Re: Crest CC4000? Crown XTI4000? Crest CD3000 [message #277480 is a reply to message #277477 ]

Mon, 31 December 2007 13:11

Josh Billings is currently offline

Josh Billings
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Hmmm nobody with experience on either of these crest amps though??

-Josh

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Re: Crest CC4000? Crown XTI4000? Crest CD3000 [message #277487 is a reply to message #277376 ]

Mon, 31 December 2007 13:35

Derek Shawver is currently offline

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Josh Billings wrote on Mon, 31 December 2007 04:11

All of these amps are pretty much exactly what i need (about 1400 amps at 4 ohms)

-Josh Billings

what kind of distro do you use? j/k Laughing

Laughing

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Re: Crest CC4000? Crown XTI4000? Crest CD3000 [message #277521 is a reply to message #277487 ]

Mon, 31 December 2007 15:21

Josh Billings is currently offline

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I'm not running square waves through them...music

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Re: Crest CC4000? Crown XTI4000? Crest CD3000 [message #277530 is a reply to message #277434 ]

Mon, 31 December 2007 15:42

Don Boomer is currently offline

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IF ... your speakers will handle 800W of continuous power they should be good for at least 3200W of peak power (as far as thermal power goes). Peak power rarely causes any harm to woofers. On the Ozzfest tour I ran the subs with Crest Pro 9200s bridged into a a single double 18 box (4 ohm load) ... 18 of 'em in fact. The amps will put out more than 6000w of continuous power and about double that for peaks. Proper HP filters as well as limiters kept everything in order. No failures in over 40 shows (and the system is still out with the Jager Mobile stage). It doesn't matter haw much power you have available ... it only matters how much power you DELIVER and for how long (thermally speaking)

As far as the Crest amps ... the CC4000 would be my choice for subs. It is virtually the amp amplifier as the Pro 8200 but with a conventional power supply instead of the switch mode supply found in the Pro series. It's heavier than the Pro series because there's a big honkin power transformer in it ... which is more often preferred for subs. The CD series is a class D power amp with a conventional power supply. It's an interesting piece ... it's best used when you have a limited amount of current available or when heat is a critical issue. I'd go with the CC4000 out of all you listed. My first choice would be Crest Pro series amps however.

BTW ... square waves makes no difference ... as long as you limit the power to the recommended continuous amount.

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Re: Crest CC4000? Crown XTI4000? Crest CD3000 [message #277625 is a reply to message #277530 ]

Tue, 01 January 2008 07:19

Jon Pejtersen is currently offline

Jon Pejtersen
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My Choice of those 3 would be Crest CD3000.

I use class-D amps myself (with SMPS supply), and they are good at powering Subs (and anything else).
Class-D amps also runs much cooler, end use less current.
And since these Crest amps use a Linear Power suply, they might be "perfect" designed amps to perform at their best in every situation >allthough they are more heavy than SMPS amps.

Best Regards -
Jon Pejtersen

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Re: Crest CC4000? Crown XTI4000? Crest CD3000 [message #277842 is a reply to message #277625 ]

Tue, 01 January 2008 21:59

Josh Billings is currently offline

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Has Anybody actually used the Crest CD3000. I think i remember bennet saying some good things about them a while back

-Josh

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Re: Crest CC4000? Crown XTI4000? Crest CD3000 [message #277951 is a reply to message #277842 ]

Wed, 02 January 2008 09:03

Isaac Huff is currently offline

Isaac Huff
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Location: Dayton, OH

Should Get Out More

I have 5 of them along with two of the 1500 models. Three of the CD3000 units are powering one 4 ohm double 18 box (EV MTL2) per channel. The other two are running mids, with the 15 from two Yorkville TX4 boxes on each channel. They are run pretty hard several days each week. I bought them new 2 years ago and have not had a single failure or even a shutdown. They are not light weight. The current draw is very low in practical use. These 7 amplifiers (5 CD3000 + 2 CD1500) all run with 4 ohm stereo loads from a total of three 20-amp circuits (That is 18,000 PA watts). The amps put out less heat under load than any I've ever owned. The fans are plenty quiet for typical rock gigs. Crest has raised the price on them since I bought, but they are still a good deal for the amount of power you get.

What else would you like to know?

Isaac

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Re: Crest CC4000? Crown XTI4000? Crest CD3000 [message #277978 is a reply to message #277487 ]

Wed, 02 January 2008 10:30

Jon Pejtersen is currently offline

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Derek Shawver wrote on Mon, 31 December 2007 20:35

Josh Billings wrote on Mon, 31 December 2007 04:11

All of these amps are pretty much exactly what i need (about 1400 amps at 4 ohms)

-Josh Billings

what kind of distro do you use? j/k Laughing

Laughing

Haven't you heard of the new Portable "nuclear reactor in a box" systems? Razz

Razz

Laughing

Best Regards -
Jon Pejtersen

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Re: Crest CC4000? Crown XTI4000? Crest CD3000 [message #277989 is a reply to message #277978 ]

Wed, 02 January 2008 11:01

Josh Billings is currently offline

Josh Billings
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So you think they are a good Sub Amp? Have you tried anything else in comparrison to them on the same subs?

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Re: Crest CC4000? Crown XTI4000? Crest CD3000 [message #278051 is a reply to message #277625 ]

Wed, 02 January 2008 13:55

Bob Lee (QSC) is currently offline

Bob Lee (QSC)
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The power supplies are conventional but not linear.

Bob Lee
Applications Engineer, Technical Services Group,
QSC Audio
VP Western Region US/Canada,
Audio Engineering Society

"If it sounds good, it is good."
-Duke Ellington

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Re: Crest CC4000? Crown XTI4000? Crest CD3000 [message #278111 is a reply to message #277978 ]

Wed, 02 January 2008 17:39

Derek Shawver is currently offline

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Jon Pejtersen wrote on Wed, 02 January 2008 10:30

Derek Shawver wrote on Mon, 31 December 2007 20:35

Josh Billings wrote on Mon, 31 December 2007 04:11

All of these amps are pretty much exactly what i need (about 1400 amps at 4 ohms)

-Josh Billings

what kind of distro do you use? j/k Laughing

Laughing

Haven't you heard of the new Portable "nuclear reactor in a box" systems? Razz

Razz

Laughing

Along with the "Extra Heavy Duty Global Power Supply" Very Happy

Very Happy

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