Behringer iNUKE Class-D Amps: NU1000/NU1000DSP, NU3000/NU3000DSP, NU6000/NU6000DSP, NU4-6000 - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #11 of 425 Old 01-08-11, 06:55 AM Thread Starter
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re: Behringer iNUKE Class-D Amps: NU1000/NU1000DSP, NU3000/NU3000DSP, NU6000/NU6000DSP, NU4-6000

If you are in Europe, XTZ is a very attractive choice. It's basically a gang of Scandinavian (Swedish) audio professionals that design decent speakers, amps etc with quality parts. Production is China. Distribution is internet based. Prices are very interesting. If you are in EU, you don't pay extra duties, which is a very big plus. All the stuff I buy really cheap from Emotiva gets a big upmarking because of the shipping bill and the 30% duties and VAT you pay on top of the total. None of that with XTZ.

If I didn't got my used Jamo R909 for 1/3 of list price, I would be looking into their reference "100.49" speakers. Got some "white" speaker cables of them.
http://www.xtz.se/uk

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post #12 of 425 Old 01-08-11, 07:47 AM
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re: Behringer iNUKE Class-D Amps: NU1000/NU1000DSP, NU3000/NU3000DSP, NU6000/NU6000DSP, NU4-6000

The divines do look awesome. Eventually, I might try copy the design and build something, but thats a long long way off.

I am actually about to order a pair of 99.36 speakers from them.
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post #13 of 425 Old 01-08-11, 07:58 AM Thread Starter
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re: Behringer iNUKE Class-D Amps: NU1000/NU1000DSP, NU3000/NU3000DSP, NU6000/NU6000DSP, NU4-6000

Quote:
Moonfly wrote: View Post
The divines do look awesome. Eventually, I might try copy the design and build something, but thats a long long way off.

I am actually about to order a pair of 99.36 speakers from them.
Don't copy, build these:
http://www.humblehomemadehifi.com/Galactica.html
How about that, uh?

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post #14 of 425 Old 01-19-11, 04:52 PM
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re: Behringer iNUKE Class-D Amps: NU1000/NU1000DSP, NU3000/NU3000DSP, NU6000/NU6000DSP, NU4-6000

Any new news on price and availability of these amps?

Moonfly - would this be an alternative to the EP-4000 for my dual three 18" IB3 driver arrays?
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post #15 of 425 Old 01-19-11, 05:03 PM Thread Starter
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re: Behringer iNUKE Class-D Amps: NU1000/NU1000DSP, NU3000/NU3000DSP, NU6000/NU6000DSP, NU4-6000

Quote:
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Any new news on price and availability of these amps?
No, I have a peep into the Behringer site almost every day. "Coming soon" is what it says.

Slowly building a 9.2.4 HT with 3 DIYSG Titan LX LCR, 2 LLT subs (done) and much, much more...
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post #16 of 425 Old 01-20-11, 12:19 AM
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re: Behringer iNUKE Class-D Amps: NU1000/NU1000DSP, NU3000/NU3000DSP, NU6000/NU6000DSP, NU4-6000

The iNUKE 3000 look interesting. I have a build project in my head for this summer when I will move and this one could be a good choice if the price is good.

But I find it hard to beleive that these amplifier can supply what they are rated. the iNUKE 3000 weight 7 pound and the iNUKE 6000 12 pound. I have not even checked the iNUKE 1000... it must be like 5lbs.

Do you really think that a 12 pound amp could deliver 6000 watt? If it's true then I will save some money on shipping
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post #17 of 425 Old 01-20-11, 02:30 AM Thread Starter
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re: Behringer iNUKE Class-D Amps: NU1000/NU1000DSP, NU3000/NU3000DSP, NU6000/NU6000DSP, NU4-6000

Quote:
Steeve-O wrote: View Post
The iNUKE 3000 look interesting. I have a build project in my head for this summer when I will move and this one could be a good choice if the price is good.

But I find it hard to beleive that these amplifier can supply what they are rated. the iNUKE 3000 weight 7 pound and the iNUKE 6000 12 pound. I have not even checked the iNUKE 1000... it must be like 5lbs.

Do you really think that a 12 pound amp could deliver 6000 watt? If it's true then I will save some money on shipping
First: as usual with Behringer, take their ratings with a big grain of salt. The print is not as reliable as, say, Emotiva. I want the NU6000 to power a pair of Maelström 18". These are rated for 1500 Watt Pmax @ 4 ohm each. In theory, the NU6000 is 3000 Watt @ 4 ohm each channel. Should be no problem, I plan to let Audyssey MultEQ or something similar do its thing.

Second: that's class D for you. Here is some description, a bit outdated it seems, but still valid:

A class D amp can be more than 80% efficient while a Class A/B (which most amps are) will fall into the 50-60% range. Let’s say we have two identical vehicles and we are going to put a class A/B sub amp into one of the vehicles and a class D into the other. Both amps, for comparison put out 1,000 watts RMS with 12 Volts. The vehicle with the class A/B amp will draw approximately 160 amperes of current and , being 50% efficient, will put out 1,000 watts of heat into the heat sink! Bummer, huh! The class D amp will only draw around 98 amperes to yield the same 1,000 watts RMS output. Not only will your vehicle like you better for not draining the power supply, but the amp will like you better as well because now you will only produce about 175 watts of heat into the class D heatsink! For you tweakers, that’s 40% less current draw and 82% less heat for the heatsink dissipate...

Class D is great for bigger sub amps only as the benefits do not outweigh the cost for a smaller amp. So, why don't people make a class D amp to play 20Hz to 20kHz?! Not a simple answer, but here goes... The audio signal is used to modulate the shape of the square-looking waves of high frequencies. Then the high frequencies are eliminated, leaving audio output. The type of modulation used is called Pulse-width Modulation, or PWM. PWM, like the power supply in many car audio amps is used. Truth is, a PWM power supply as an amp that has DC output only. If you want to play 20kHz you would have to have the output devices switch at hundreds of kHz which almost reaches the AM radio frequencies. You see, the Pulse Width Modulated (PWM) wave frequency must be a lot higher than the desired playing frequency. To play 500Hz, we only need to switch at a frequency around 60kHz.

In summation, class D amps put out more power and less heat with less current consumption. But as for now, they are only beneficial as larger subwoofer amplifiers.


Hence, more efficiency means a smaller transfo and less heat, both good factors to reduce size. The drawbacks are that it's not easy to have good quality sound for the whole audio band, but that's no concern for SW.

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post #18 of 425 Old 01-20-11, 02:40 AM Thread Starter
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B&O ICE power

If you feel like marketing your own personal class D power amplifier: here's the Plug&Play module you need. Just slot it into a 17 inch case. Succes!

http://www.icepower.bang-olufsen.com...tions/theater/

Specs:
Nominal Power
<0.05% THD+N, 8Ω, 20Hz-20kHz
One channel driven FTC
150 Watts

Nominal Power
<0.1% THD+N, 8Ω, 20Hz-20kHz
Seven channels driven FTC
63 Watts


So, with all 7 channels drivven, you lose 60% of the original power and have double the distortion! Wat a whimp!


BTW:the B&O BeoLab5 speaker system (the saucer from space design you saw in that Batman movie) has 2500 Watts for each speaker with 2 x 1000 Watts and 2 x 250 Watts built in if I am not mistaken.

Slowly building a 9.2.4 HT with 3 DIYSG Titan LX LCR, 2 LLT subs (done) and much, much more...
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Last edited by erwinbel; 01-20-11 at 02:52 AM.
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post #19 of 425 Old 01-20-11, 07:45 AM
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re: Behringer iNUKE Class-D Amps: NU1000/NU1000DSP, NU3000/NU3000DSP, NU6000/NU6000DSP, NU4-6000

So do you guys think this will be a replacement for the EP-4000?

Moonfly suggested the EP-4000 for my installation and in all my research to see if there is something else, I keep coming back to it. It's hard to believe considering it's so cheap.

FWIW - I'll be building a pair of 3 driver Fi IB3 18" Arrays.
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post #20 of 425 Old 01-31-11, 01:12 PM
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re: Behringer iNUKE Class-D Amps: NU1000/NU1000DSP, NU3000/NU3000DSP, NU6000/NU6000DSP, NU4-6000

Something to bear in mind about Class D is all those theoretical statements about Class D being more efficient than Class AB goes right out the window when you push the amplifier into clipping.

Push a Class D hard enough and your back to Class AB levels of efficiency.
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