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[JOSEPH DIXON]

OK, here's the deal. I have $3400.00. I plan to upgrade my power amps.

Here's what I have.
3 RMX 2450's
1 RMX 4050HD
1 PLX 3602
and the 'ol Driverack PA.

I have a pair of SRX 722's and three SRX 728's. I haven't bought a forth sub YET because I wouldn't be able to fit it my van anyway. I've been using an RMX 4050HD on the subs and a PLX3602 on the tops. I use two of the 2450's for four monitor mixes.

I've ran several other 728 / 725 combos with bigger power and more headroom. I don't have much  headroom. I just can't stand to see the red lights  on the 4050HD flashing with every kick drum hit anymore. With only $3400.00, I didn't think I'd be able to get enough of the correct amps to be able to bi amp my tops. So I just figured I would just get a used Itech 6000 and an Itech 4000 and at least be better off than I am now.

The good - I love the weight of the Itechs. I like the 4 ohm stereo rating. I like the power draw - which is VERY important to me.

The not so good - I am intimidated by the DSP. I don't like the 2 ohm stereo rating. I'd need to be able to run two 728's per side of the IT6000, but the stereo 2 ohm rating is only 2500 watts.

So then I started thinking about the QSC PL380. I don't know a whole lot about them really. I love the ease (no DSP to mess up) of operation. I love the stereo 4 and 2 ohm rating. The weight is good but I'm pretty sure I've read in some older posts that they draw a lot more AC than the Itechs. I often only get 2 circuits for PA...

Then I thought about bridging, which I'm a bit afraid of doing anyway. I think I'd really draw a lot of AC and add a lot of weight to the amp rack though. I'd love to be able to bi amp the 722's. I don't know what to do exactly. I've got $3400.00 and the amps I listed above.

A buddy of mine uses an XTI 6000 on his 728's and an XTI 6000 on his 725's. The rig sounds good but the sub amp seems to strain (?) a bit, like the recovery isn't quite there? Plus, it seems used IT4000's and IT6000's are cheaper than XTI 6000's anyway.

I really don't know what to do. IF you were in my situation, what would you do?

Thanks everybody.

[Gary Weller]

How about getting an used iTech 8000 for the subs and another 3602?

Then aux feed the subs using the Itech's dsp and use the driverack & two 3602's to biamp the tops.

Might even have enough money left over to get a used Driverack 260 and sell the DRPA.

keep the 4050 in the van for a spare. Just my ideas, maybe someone else has a better one.

[Duncan McLennan]

The thing about the iTech 2Ω ratings is that you need to examine the burst ratings in addition to continuous ratings.

The long term rating is 2,500, but the 20ms burst is over 4,500. 20ms is a kick drum hit. That's almost 3dB more output than you might think, and it's available at the time you need it most (since you said your amps are clipping on kick hits).

I think IT4000/6000 is a great combination.

You can probably do the whole shebang for about $3,400 and make some money on the sale of the other amps.

DSP is nothing to worry about. It's rather easy to figure out.

I'd definitely avoid bridging. You'll draw less power, put less strain on the amps, and save weight.

[Tim Talbot]

I would take a good look at these > http://www.pknc.com/xe_eng.html truly stunning and are very well priced.

There's quite a few of these around the UK now and i've put them head to head with our Powersoft amps... there isn't anything in it !!

Expect big things from PKN in the future 

[Robert Patch]

You don't HAVE to use the DSP in the itechs, although you probably will.  The 8000 seems to have the potential to draw significantly more current than the 6000.

[Tim McCulloch]

You don't HAVE to use the DSP in the itechs, although you probably will.  The 8000 seems to have the potential to draw significantly more current than the 6000.

How so?  The 8000 does not draw disproportionately more current per watt of output.

[Vinny DAgostino]

If you directly contact this Ebay seller: http://cgi.ebay.com/Crown-I-Tech-8000-IT-8000-ITech-8000-it8000-I-T8000_W0QQitemZ370486776098QQcategoryZ23787QQcmdZViewItemQQ_trksidZp5197.m7QQ_trkparmsZalgo%3DLVI%26itu%3DUCI%26otn%3D3%26po%3DLVI%26ps%3D63%26clkid%3D7318354337271418569

They have about (4) left and can knock a little more off the price if you deal with them direct and avoid all the Ebay/PayPal fees.
I have bought from them a few times and have had great results.

Supposedly the story on these amps is that they were out on tour with someone and when finished were returned to Crown to be updated and cleaned.
They have a full 1-year warranty.

[Robert Patch]

How so?  The 8000 does not draw disproportionately more current per watt of output.

Exactly. 

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