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October 24, 2009 - 6:48am
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Confused: JA's Ayre CX-7 CD player 5/2003 review
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I believe Meridian used a DVD-R drive in their 1999-vintage Model 800 DVD-A player, but that doesn't gainsay Ayre's claim.
That is what I decided at that time, but I haven't looked inside a CX-7 since.
I am pretty sure i have a photo of the circuit boards in my lab work book, so I will check this when I am back in the office Monday.
For that you will need to ask Ayre.
John Atkinson
Editor, Stereophile
It's an AKM AK4112B.
John Atkinson
Editor, Stereophile
From the Specs of the Ayre CX-7 review, the unit does not feature Digital Input (a good thing). So, AFAIK and IMO, a SPDIF signal should not enter the decoder. But if the unit uses AKM AK4112B receiver (and not a dedicated decoder), then SPDIF-based data transmission within CX-7 is indeed correct. Wonder why Ayre chose this topology -- and do they still do it this way in their latest CX-7 updates?
SPDIF, IME, is a big compromise.
Thx for digging up this info, JA
One more question for you if you have that photo lying around:
What is the clock freq.(i.e., the freq. of the osc./crystal)? This unit may even have two main clocks: one for CD/SACD and one for DVD-based formats.
Reason I ask: the audiophile universal players tend to sound significantly better than mainstream universal (even higher end mainstream players, like Pioneer Elite or top Denons) . I'd like to establish some scientific correlation to what I perceive. The mainstream units' oscillators tend to be 27MHz, which is freq. optimized for video, not audio. E.g., 24.576MHz oscillators may be used in the audiophile uni's for DVD-based audio; SACD, on the other hand, works at a multiple sample frequency of CD (2.822Mhz).
Thanks again!
The CX-7 is NOT a universal player, it only plays CD's. The C-5 is the universal player.
It was until the appearance of BluRay.
Kal
You're right -- my bad!
But I'm still curious about the clock so I'll create a new thread. Thx!