Re: AVR or pre amp recommendations? Going 4K
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Joined: Sep 2009
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connoisseur
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connoisseur
Joined: Sep 2009
Posts: 1,898 Likes: 101 |
That will only happen over some zombies dead bodies ... oh ... wait a second ...
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Re: AVR or pre amp recommendations? Going 4K
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Joined: Jan 2007
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shareholder in the making
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shareholder in the making
Joined: Jan 2007
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Mojo ... give the guy some numbers ... What do you think should be the cut off for those ... where it become just a spec and not audible... Hmmm...yeah...numbers. For S/N, you have to know two things: ambient noise of your space and the level where your ears compress. Ears compress at 120dB. Ambient noise is probably no better than 30dB. This means a S/N greater than 90dB is practically of no importance. For THD+N, it's generally accepted that anything less than 1% over the entire audible band and volume levels is inaudible. The figures above are for the entire *system* and not individual components.
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: AVR or pre amp recommendations? Going 4K
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Joined: Sep 2009
Posts: 1,898 Likes: 101
connoisseur
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connoisseur
Joined: Sep 2009
Posts: 1,898 Likes: 101 |
For S/N, you have to know two things: ambient noise of your space and the level where your ears compress. Ears compress at 120dB. Ambient noise is probably no better than 30dB. This means a S/N greater than 90dB is practically of no importance.
For THD+N, it's generally accepted that anything less than 1% over the entire audible band and volume levels is inaudible.
The figures above are for the entire *system* and not individual components.
ear compression ... interesting way to come up with a number ... 1% THD was the number I was using back in the day (because that, as you point out, was considered inaudible). I*d like to see something below 0.5 for my set up just because. Any thing below 0.1 I would call just a number. Using the same 10x cushion for your S/N number puts Noise at 100dB down ... I would not pick one system over another to do better. BTW I doubt distortion is a real concern in any reasonable pre amp stage today.
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Re: AVR or pre amp recommendations? Going 4K
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Joined: Sep 2018
Posts: 241
local
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local
Joined: Sep 2018
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I think I'm going to swap out my Denon for a used Anthem MRX 720. From what I've read, it'd be worth it just for the improvement that ARC brings over Audyssey.
Axiom M5HP VP160 M3 ADA1000 Anthem MRX 720 SVS SB-3000 (dual)
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Re: AVR or pre amp recommendations? Going 4K
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
Be careful used. We've heard one horror story already. I'm waiting for Axiom's pre/pro.
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: AVR or pre amp recommendations? Going 4K
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Joined: Sep 2018
Posts: 241
local
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local
Joined: Sep 2018
Posts: 241 |
Horror story? The 1120 that had issues after a firmware update? Is Axiom actually working on a pre/pro?? Would be awesome, although I know Ian despises room correction.
Last edited by bman84; 06/18/19 01:50 PM.
Axiom M5HP VP160 M3 ADA1000 Anthem MRX 720 SVS SB-3000 (dual)
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Re: AVR or pre amp recommendations? Going 4K
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Joined: Sep 2009
Posts: 1,898 Likes: 101
connoisseur
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connoisseur
Joined: Sep 2009
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I’m sure if they came out with a preprocessor it would be done well ... that said
It is also a lot of work if you are going beyond the standard surround decoding chips. Just look at all these companies sliding their dates (or worse coming out with half working products) trying to produce 16 channel surround. Not sure how Axiom would differentiate them selves otherwise. I think it would be high risk tech wise, resources draining and a hard sell to anyone who was not familiar with Axiom. It would have to have some sort of auto room correction for it to be a marketable product.
BTW I use room correction for my everyday room setups but will probably use REW to hand tune (treatment and parameters) for the theater once it’s finished.
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Re: AVR or pre amp recommendations? Going 4K
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
Ian doesn't like the existing room correction because it's primitive. Imagine however an array of microphones that sense how The Family of Curves is affected by the room and compensated for in the DSP.
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: AVR or pre amp recommendations? Going 4K
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Joined: Sep 2018
Posts: 241
local
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local
Joined: Sep 2018
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Would be awesome to see Axiom build their own room correction software, although I'd imagine that'd be quite an undertaking. Could license it to others if it turned out well though.
Axiom M5HP VP160 M3 ADA1000 Anthem MRX 720 SVS SB-3000 (dual)
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Re: AVR or pre amp recommendations? Going 4K
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Joined: Jul 2004
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I think I'm going to swap out my Denon for a used Anthem MRX 720. From what I've read, it'd be worth it just for the improvement that ARC brings over Audyssey. I'm very impressed with ARC over my last two Denon's with Audyssey. And I have not taken the time to really dig into the program and make room tweaks. I just ran it the one time with five locations and called it good.
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