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#432641 - 06/19/19 09:43 AM Re: AVR or pre amp recommendations? Going 4K [Re: michael_d]
Mojo Online   content
axiomite

Registered: 01/21/07
Posts: 6088
Has your Anthem ignited yet, Michael? All the ADAs I have run cool even with 2400W peaks.
_________________________
M100,VP160,QS10HPx2,EP800,M5HP,M3,M50 v4
M80,VP150,QS8x4,EP600 v2
ADA-1000-2,3,1500-3
Air N2

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#432642 - 06/19/19 10:29 AM Re: AVR or pre amp recommendations? Going 4K [Re: michael_d]
bman84 Offline
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Registered: 09/29/18
Posts: 181
Loc: Toronto, Ontario
Class D for the win! Not sure why so many amps are still being made with old spaceheater amp technology.
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Axiom M5HP,VP180,M3,ADA1000
Anthem MRX 720
SVS SB-3000 (dual)

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#432643 - 06/19/19 10:48 AM Re: AVR or pre amp recommendations? Going 4K [Re: michael_d]
Mojo Online   content
axiomite

Registered: 01/21/07
Posts: 6088
It's difficult to design class D amps. Anthem has the M1 and it's a marvel of engineering but it's ridiculously expensive. I think this is because Anthem is trying to recover the multi-million dollar dev costs for that product.
_________________________
M100,VP160,QS10HPx2,EP800,M5HP,M3,M50 v4
M80,VP150,QS8x4,EP600 v2
ADA-1000-2,3,1500-3
Air N2

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#432644 - 06/19/19 11:04 AM Re: AVR or pre amp recommendations? Going 4K [Re: michael_d]
bman84 Offline
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Registered: 09/29/18
Posts: 181
Loc: Toronto, Ontario
And yet Axiom was able to design awesome class D amps and sell them at reasonable prices. Pretty amazing, especially considering the tiny size of their operation.
_________________________
Axiom M5HP,VP180,M3,ADA1000
Anthem MRX 720
SVS SB-3000 (dual)

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#432645 - 06/19/19 11:41 AM Re: AVR or pre amp recommendations? Going 4K [Re: michael_d]
rrlev Offline
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Registered: 09/25/09
Posts: 148
Loc: Boston Area
Back around 1980 I took a independent elective to design a power amp. I was pushing to do this cool new class D design which I found a write up on. My professor at the time convinced me to start off with something more conventional ... good thing he did ... as that was hard enough.

Today it’s a lot easier as one can choose from an assortment of chips to help with the heavy lifting ...

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#432648 - 06/19/19 12:18 PM Re: AVR or pre amp recommendations? Going 4K [Re: bman84]
Mojo Online   content
axiomite

Registered: 01/21/07
Posts: 6088
Originally Posted By bman84
And yet Axiom was able to design awesome class D amps and sell them at reasonable prices. Pretty amazing, especially considering the tiny size of their operation.


Indeed. It was a difficult journey though. It's one of the reasons Ian is one of my heroes.
_________________________
M100,VP160,QS10HPx2,EP800,M5HP,M3,M50 v4
M80,VP150,QS8x4,EP600 v2
ADA-1000-2,3,1500-3
Air N2

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#432649 - 06/19/19 12:20 PM Re: AVR or pre amp recommendations? Going 4K [Re: rrlev]
Mojo Online   content
axiomite

Registered: 01/21/07
Posts: 6088
Originally Posted By rrlev
Back around 1980 I took a independent elective to design a power amp. I was pushing to do this cool new class D design which I found a write up on. My professor at the time convinced me to start off with something more conventional ... good thing he did ... as that was hard enough.

Today it’s a lot easier as one can choose from an assortment of chips to help with the heavy lifting ...


True it's a lot easier for people who don't know what they're doing to hang themselves. laugh
_________________________
M100,VP160,QS10HPx2,EP800,M5HP,M3,M50 v4
M80,VP150,QS8x4,EP600 v2
ADA-1000-2,3,1500-3
Air N2

Top
#432650 - 06/19/19 12:50 PM Re: AVR or pre amp recommendations? Going 4K [Re: Mojo]
rrlev Offline
veteran

Registered: 09/25/09
Posts: 148
Loc: Boston Area
It’s also easier for people who don’t know how things work to build things that actually work. You can build a a PC without understanding how a computer works. I can buy an Ethernet controller and installl a driver and make it work ... with out knowing anything about the hardware, software, or communication protocol. So today for $20 and almost no design time with little knowledge I did what would have cost millions and years of design time 40 years ago.

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#432651 - 06/19/19 01:01 PM Re: AVR or pre amp recommendations? Going 4K [Re: michael_d]
Mojo Online   content
axiomite

Registered: 01/21/07
Posts: 6088
When you're building stuff for the public, you can't be a hacker. You need to engineer the stuff. If you do what you suggest, shit breaks, it can't be maintained, it can't be extended, and on and on. Chips definitely help cut down design time but engineering is a lot more than "just" design and that's why hacked products fail to bring a good return (all other things being equal) .
_________________________
M100,VP160,QS10HPx2,EP800,M5HP,M3,M50 v4
M80,VP150,QS8x4,EP600 v2
ADA-1000-2,3,1500-3
Air N2

Top
#432652 - 06/19/19 01:26 PM Re: AVR or pre amp recommendations? Going 4K [Re: Mojo]
michael_d Offline
connoisseur

Registered: 07/23/04
Posts: 4220
Loc: Up yonder
Originally Posted By Mojo
Has your Anthem ignited yet, Michael? All the ADAs I have run cool even with 2400W peaks.


Not yet, but I'm not using ANY of the amps. I have an external ICE base amplifiers. - and they run cool.

I did get my T8 cooling fan. Pretty slick device. I can set it up to start pulling air at any temp or fan speed. I have not had time to watch a movie though, so I don't know if the Anthem's fan will run yet.

I might also add that some of the guys at AVS reported the MRX fan would run, even when using external amps, so this is not a "hot amp" thing, but a processor thing. My MRX fan only came on during movies with multi-channel sound processing.
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