Amps

[rec]

I am in the process of building OT12's and t30 subs (4 of each), but will only use 2 OT12's for smaller gigs
I have a QSC 1850HD and a QSC GX5 for amps
I have one pair of OT12's almost done (Deltalite 2512 drivers w/arrays)
Then I am going to finish building the 4 T30's (4012HO drivers)

My question is, which amp should I use for the tops and which for the subs
Can I push 4 t30's with the GX5?

[rec]

So I will be the first to reply to my own thread
here is what I know ( I think, please correct me if I am wrong)

GX5 does 700w/channel @4ohms
1850HD does 600w/channel @4 ohms

deltalite 2512 is a 250w driver
250 x 8 (ohms) = 2000
square root of 2000 is 45 (volts from amp)
so half power would be 22.5volts

4012HO driver is a 600w driver
600 x 8 = 4800
square root of 4800 is 69 (volts)
half power is 35 volts

So is this noob heading in the right direction

[DJPhatman]

You know what driver takes more power

What you need to figure is which amp will provide the power without over-working itself. IMHO, use the 1850HD on the subs, and the GX5 for the tops. Even though the 1850 provides less power, it is build with a more powerful power supply, and will not sweat the work-load of the subs.

[rec]

The 4012HO drivers will definitly take more power than the deltalites
What you say makes sense, I would agree that the 1850 is a heavier duty amp

Did I come up with the right volts for the drivers?

[rec]

I figured out what I was doing wrong with the math

Half power = starting with half of the drivers rating....duh

4012HO use 300w
and
2512 use 125w
this gets me 48.98v for half power on the 4012HO
and 31.62v for the 2512