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Re: ADA1500 - Trigger Cable
SRoode #432905 07/28/19 09:42 PM
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I can tell you unless you are listening to flutes, the 1500 gets very hot in 2.0 feeding the 100s at full power. A class A or even A/B amp would turn into a puddle without very beefy and expensive heat sinks or less beefy sinks and active cooling.


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Re: ADA1500 - Trigger Cable
SRoode #432911 07/29/19 01:05 AM
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Okay now I'm confused. How does a Class D amp get that hot? My Denon 4400 is HOT, but it's a Class A/B, driving all 9 speakers, 3 of which are the ones the ADA1500 will now power.


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Re: ADA1500 - Trigger Cable
SRoode #432912 07/29/19 01:06 AM
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Oh and anything below 60 Hz is handled by my 2 EP800s


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Re: ADA1500 - Trigger Cable
SRoode #432913 07/29/19 02:31 AM
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If your denon had to dish out 650W a side into 4 Ohms from 20Hz on up, it would turn into puddly goo. At 90% efficiency and at that level, the ADA is still turning about 150W into heat. That's like 3/4 of the power of your Denon. LOL.


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Re: ADA1500 - Trigger Cable
SRoode #432914 07/29/19 04:26 AM
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The Bryston 28bcubed mono amp dumps 6100 BTU/hr at 1000W output into 8 Ohms and 2700 BTU/hr at 166W. 6100 BTU/hr is my heat-rated gas fireplace on low.

Looking at it a different way, that Bryston needs 1800W in to produce 1000W out. And 800W in to produce 160W out. Wow!

The ADA is a tree-hugger and the 28bcubed is a depletist.


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Re: ADA1500 - Trigger Cable
SRoode #432916 07/29/19 03:55 PM
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What's even more amazing about that Bryston, is that at 1000W output, the noise is in the picoWatt region. I'd love to know how Bryston pulled that off.

A 1000 Ohm resistor at room temperature and operating with a 10KHz bandwidth generates noise in the nanoWatt region. That's just thermal noise...at room temperature...which the Bryston is not when it's outputting 1000W. This does not include shot noise, burst noise, flicker noise, intermodulation noise or transit time noise. And I'm probably missing a bunch of noises I'm not familiar with. And that's just one element - a resistor. The Bryston has hundreds of elements. And it's 1000 times less noisy than a single resistor!

I guess that's why it costs $US12K for mono!


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Re: ADA1500 - Trigger Cable
SRoode #432917 07/29/19 06:22 PM
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It has arrived! Now I just have to wait till I get home from my business trip on Thursday. The Fedex guy told my wife it's very heavy wink



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Re: ADA1500 - Trigger Cable
SRoode #432918 07/29/19 06:37 PM
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What you don't see in that photo is the crane holding up that behemoth.


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Re: ADA1500 - Trigger Cable
SRoode #432927 08/01/19 10:18 PM
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Well, I hooked it up and 2 of the 3 channels don't work. The one that does work does not sound like it is putting out full power. I tried all cable combinations (RCA and speaker wire). I can get all 3 of my speakers working on channel 3 but none of them on channels 1 or 2. I've sent an E-mail to Ian to see what's next.

Super disappointed... frown


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Re: ADA1500 - Trigger Cable
SRoode #432932 08/02/19 04:19 PM
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I had a problem with my ADA-1000-3 where channels 1 and 2 were in parallel so it was only working as 2-channel. Ian sent me a new one which has been working flawlessly for over 6 months even after I pushed it way past its limits many times. The 1500-3 has also been a total brute and the only thing that brought it to its knees were stacked M5s which is a 2 Ohm load. But even then, I was able to drive those stacked M5s to 107dB peaks at 13 feet away before it shut down...LOL!

Ian is BOSS!


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