7lbs. Amp?????? WOW

[LelandCrooks]

You bet.

[djengineer]

Thinking of selling my XLS 602 when the new XLS 2500 comes out. Would I be trading weight for quality? ie bass response, durability?

[RubiconProSound]

It's also got RCA inputs for all you DJ's.

Hey now...some of use DJ's use XLR's.

Why do I suddenly feel like the Geico caveman...

[Turntablist]

Found a fairly good review that should chill the most minds here about the IPR series.

Written by Ivan Beaver:

"A friend of mine loaned me a Peavey IPR1600 to “run through the paces”. So here is a mini review. I won’t waste my time on the light weight or the ugly blue lights-except to say that I think it is a bad idea to have the power button and logo lit—when the unit is OFF. The lights glow brighter when it is actually on-along with the internal lights coming on.

My dummy load only goes down to 4 ohms-so I could not test 2 ohm performance. This was just a quick and dirty test-so I did not worry about betting exact numbers. I also did not do both channel driven. No regulated AC voltage-just whatever live voltage was available.

If you want to test it yourself- BE VERY CAREFUL!!!!! Ground is NOT the same on both channels. On one channel-pin 1 – is chassis ground. On the other channel pin1 + is chassis ground!

Be careful when hooking up scope leads and make sure how your dummy load does its grounding.

Anyway, the 8 ohm continuous sine wave output was just under 300 watts and the 4 ohm sine wave was right at 500 watts.

So now the heating test, I ran music into hard clip (the DDT light was on more than it was off) into a 4 ohm load for 4 hours. The amp was just sitting on the bench. Not only did it not get hot-I could not find any place on the chassis that I would even call warm. Because of the fan cooling-I am not sure it even got up to room temp.

I backed the power down to just under clipping, and the chassis was actually cold on the exhaust exit (where it should be hot). This thing is VERY efficient.

Freq response. When sweeping down in freq it is rock solid until 8 hz. At 7 hz the level dropped quite a bit and started fluttering. However I had to raise the generator to 11Hz to get it “stabile”. Again, this is sine wave and was tested at around 300 watt output.

The generator I was using only goes to 20Khz and it was flat up to that freq.

I have not listened to it (that is for another day), but so far on the bench I am pretty impressed.

No, I did not do distortion tests. This was just a quicky thing-in between everything else I have to do.

So far I am impressed. I wonder how good the DSP version is."


I also found a good link on some more comments and photos in the innards of the IPR 1600:
http://www.talkbass.com/forum/showthread.php?p=8535689

And here are some raw specs:

IPR™ 1600 Specification Sheet (NON-DSP MODEL)
Rated Power (2 x 2 ohms) - 800 watts per channel @ 1 kHz at <0.1% T.H.D. both channels driven.
Rated Power (2 x 4 ohms) - 530 watts per channel @ 1 kHz at <0.1% T.H.D. both channels driven.
Rated Power (2 x 8 ohms) - 300 watts per channel @ 1 kHz at <0.1% T.H.D. both channels driven.
Rated Power (1 x 2 ohms) - 1000 watts @ 1 kHz at <0.1% T.H.D.
Rated Power (1 x 4 ohms) - 600 watts @ 1 kHz at <0.1% T.H.D.
Rated Power (1 x 8 ohms) - 320 watts @ 1 kHz at <0.1% T.H.D.
Minimum Load Impedance - 2 ohms
Maximum RMS Voltage Swing - 55 volts
Frequency Response - 10 Hz - 50 kHz; +0, -3 dB at 1 watt
T.H.D. (2 x 2 ohms) - <0.1% @ 600 watts per channel from 20 Hz to 1.5 kHz, decreasing to 500 watts at 20 kHz at <0.25%
T.H.D. (2 x 4 ohms) - <0.1% @ 470 watts per channel from 20 Hz to 20 kHz
T.H.D. (2 x 8 ohms) - <0.1% @ 250 watts per channel from 20 Hz to 20 kHz
Input CMRR - > - 60 dB @ 1 kHz
Voltage Gain - x 60 (+35 dB)
Crossover - 100 Hz switchable 2nd order High pass and 3rd order Low Pass per channel
Crosstalk - > -70 dB @ 1 kHz at 100 watts power @ 4 ohms
Hum and Noise - > -105 dB, "A" weighted referenced to rated power @ 4 ohms
Damping Factor (8 ohms) - > 170:1 @ 20 Hz - 1 kHz at 8 ohms
Phase Response - +9 to - 86 degrees from 20 Hz to 20kHz
Slew Rate: - > 12V/us
Input Sensitivity - .775 volts +/- 3% for 1 kHz 4 ohm rated power, .68 volts +/- 3% for 1 kHz. 2 ohm rated power
Input Impedance - 15k ohms, balanced and 7.5k ohms unbalanced.
Current Draw @ 1/8 power - 550 watts @ 2 ohms, 390 watts @ 4 ohms, 250 watts @ 8 ohms
Current Draw @ 1/3 power -1,160 watts @ 2 ohms, 810 watts @ 4 ohms, 460 watts @ 8 ohms
Cooling - Temperature dependent variable speed 80 mm DC fan
Controls - 2 front panel attenuators, crossover select switch for H.P.F, Normal and L.P.F.
Indicator LEDs - 2 DDT (clip limiting), 2 Signal presence, 2 Active status, 2 Temp and 2 DC protect
Protection - Thermal, DC, subsonic, incorrect loads, under and over voltage
Connectors - Inputs: Dual Combi 1/4” XLR, Outputs: Dual 1/4” signal patch, dual Speakon connectors
Construction - 0.062” thick aluminum
Dimensions - 3.5”x19” x 10.5” behind front panel + 0.6” for handle
Dimensions Packed - 4.72” x20.8” x 12.44” (120mm x 530mm x 316mm)
Net Weight* - 3.23 kg (7.125 lbs.)
Gross Weight - 4.31 kg (9.5 lbs.)
Warranty - 5 years

[AntonZ]

That is pretty impressive for the price tag and weight combo, especially if it proves to be as bullet proof as older Peavey amps.

[BrentEvans]

Nice.

[wr_anders]

Nice.

IPR 1600?

[BrentEvans]

IPR 1600?

Yeah, I just pasted over the photo link from the thread linked above.

[wr_anders]

IPR 1600?

Yeah, I just pasted over the photo link from the thread linked above.

Oh... Didn't see that link.
Thanks.

[WB]

Why so much wasted space?

[AntonZ]

Space for extra board for the DSP versions. It does make one think these amps could be built yet a lot smaller.

[DJPhatman]

Why so much wasted space?

So they look more like the amps the majority of buyers have seen and used.

[Turntablist]

Why so much wasted space?

So they look more like the amps the majority of buyers have seen and used.

+1

IMO, if it would have been 1hu nobody would have bought it. It would have been FAR too good to be true. I suspect that the next generation of these amps will all be 1hu though.

[Radian]

Nice picture Brent. Thanks!

Now, where's the amp?

[DJ Big Ronn]

Thats crazy, it defies any logic of what an amp should look like.