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Author Topic: Crown VZ5002 vs. QSC PL380  (Read 8223 times)

john sanders

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Crown VZ5002 vs. QSC PL380
« on: June 04, 2011, 06:58:38 pm »

I've recently upgraded my foh boxes from (4) EV QRX115's to (4) EV QRX212's. Prior to this change (1) Crown VZ5002 powered all 4 boxes @ 4 ohms/side. With the changeover the 212's would present a 2 ohm load per side; not good for headroom etc..

Here's my quandry: purchase another very heavy VZ5002 or sell the VZ5002 and purchase (2) QSC PL380's. I'm hoping your suggestions can help with this.
 
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Drew Curtis

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Re: Crown VZ5002 vs. QSC PL380
« Reply #1 on: June 04, 2011, 08:00:06 pm »

I've recently upgraded my foh boxes from (4) EV QRX115's to (4) EV QRX212's. Prior to this change (1) Crown VZ5002 powered all 4 boxes @ 4 ohms/side. With the changeover the 212's would present a 2 ohm load per side; not good for headroom etc..

Here's my quandry: purchase another very heavy VZ5002 or sell the VZ5002 and purchase (2) QSC PL380's. I'm hoping your suggestions can help with this.

I think you have the right idea.
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Blake Courtney

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Re: Crown VZ5002 vs. QSC PL380
« Reply #2 on: June 04, 2011, 08:55:35 pm »

I think you have the right idea.

Depending on how hard you push your boxes I think you would be fine with the 2 ohm load. I run 4 qrx212's off of PLX3602 AND a plx1804, bi-amped. Did that today for 7 hours straight outdoors. No problems. Now, when I need the extra headroom I add another 3602 and only run a pair per amp.

One thing to keep in mind is that the PLX and prob the PL will need a good amount of current at two ohms.

Either way you will love the weight savings.

Blake
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Jeffrey Knorr - CobraSound.com

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Re: Crown VZ5002 vs. QSC PL380
« Reply #3 on: June 05, 2011, 02:12:00 pm »

Here's my quandry: purchase another very heavy VZ5002 or sell the VZ5002 and purchase (2) QSC PL380's. I'm hoping your suggestions can help with this.

Hi John,

I would start by trying the rig as is.  The MA-5002's were Crown's top of the line of the day and were designed to power 2 Ohm loads all night.  If everything works well, which I think it would, you should be fine without adding a second amp. 

We have a rack of PL380's and they have been very solid for us.  With that said, I wouldn't think that they would have much more output watt for watt vs the 5002's.  The PL380's will however off lighter weight and reduced power draw (the benefits of Class D amplifiers).

Jeff
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Franz Francis

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Re: Crown VZ5002 vs. QSC PL380
« Reply #4 on: June 07, 2011, 03:49:00 pm »

Also switching to the P380 might leave you starving for the MA-5000's harmonic distortion, its less apparent in the QSC 380.

Franz
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Rob Spence

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Re: Crown VZ5002 vs. QSC PL380
« Reply #5 on: June 07, 2011, 11:15:02 pm »

Depending on how hard you push your boxes I think you would be fine with the 2 ohm load. I run 4 qrx212's off of PLX3602 AND a plx1804, bi-amped. Did that today for 7 hours straight outdoors. No problems. Now, when I need the extra headroom I add another 3602 and only run a pair per amp.

One thing to keep in mind is that the PLX and prob the PL will need a good amount of current at two ohms.

Either way you will love the weight savings.

Blake
I use a pair of PLX3402s and one PLX1602 to biamp my pair of QRX212s. Perfect match I think.
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Drew Curtis

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Re: Crown VZ5002 vs. QSC PL380
« Reply #6 on: June 08, 2011, 11:44:57 pm »

I think you have the right idea.

The only problem with running a single 5002vz to four boxes is that each box is only seeing about 1250 watts potential power (4 to 2 ohm load doesnt get much more out of this amp, see specs attached)

2 pl380s would add power to the 2000 watts each box is currently seeing (2500 watts stereo @4ohms) instead of nearly cutting it in half.

Edit: Yes, the specs are at 1k, but its a good reference as both manufacturers are printing specs as such
« Last Edit: June 08, 2011, 11:47:03 pm by Drew Curtis »
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Vinny DAgostino

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Re: Crown VZ5002 vs. QSC PL380
« Reply #7 on: June 09, 2011, 01:31:01 pm »

I think you have the right idea.

The only problem with running a single 5002vz to four boxes is that each box is only seeing about 1250 watts potential power (4 to 2 ohm load doesnt get much more out of this amp, see specs attached)


I don't see a problem, the QRX212 is only 600w @ 4ohms continuous.
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Jeffrey Knorr - CobraSound.com

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Re: Crown VZ5002 vs. QSC PL380
« Reply #8 on: June 09, 2011, 11:14:10 pm »

I think you have the right idea.

The only problem with running a single 5002vz to four boxes is that each box is only seeing about 1250 watts potential power (4 to 2 ohm load doesnt get much more out of this amp, see specs attached)


I don't see a problem, the QRX212 is only 600w @ 4ohms continuous.
+1
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Drew Curtis

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Re: Crown VZ5002 vs. QSC PL380
« Reply #9 on: June 10, 2011, 11:03:05 am »

totally, I was thinking they were 1200 watt boxes for some reason. I was probably thinking of the srx722 as theyre in the same league. I'll agree then and say the macro will handle it.
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ProSoundWeb Community

Re: Crown VZ5002 vs. QSC PL380
« Reply #9 on: June 10, 2011, 11:03:05 am »


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