CD Player/Transport Reviews

NuForce CDP-8 CD player Associated Equipment

Sidebar 2: Associated Equipment

Digital Sources: Ayre Acoustics C-5xe^MP, Luxman DU80 universal players; Simaudio Moon Evolution SuperNova CD player; Apple PowerMac G5, Apple Mac mini with 250GB LaCie & 2TB Infrant Technologies NAS hard drives; Benchmark DAC1, Bel Canto USB Link 24/96 USB-to-S/PDIF converter, Musical Fidelity X-DAC^V3 D/A converters.
Preamplifiers: Ayre Acoustics K-1xe, Luxman C800f, NHT PVC.
Power Amplifiers: Luxman B100f, Parasound Halo JC 1 (all monoblocks).
Loudspeakers: NHT M-00, Thiel CS3.7, Vivid G1Giya.
Cables: USB: EntreQ Discover. Interconnect: Shunyata Research Aurora Aeros, Stealth Metacarbon. Speaker: Shunyata Research Aurora Aeros, Stealth Dream. AC: Shunyata Research Hydra, King Cobra, Anaconda.
Accessories: Ayre Acoustics Myrtle Blocks, DH Labs ceramic cones, Furutech RDP panels, Shunyata V-Ray AC filter.—Wes Phillips

COMMENTS

NuForce CDP-8 CD player

Submitted by TakisJK on November 23, 2010 - 12:25pm

... (Normally, a CD player constantly varies its speed, from 200rpm at the innermost data spiral to 500rpm at the outermost data spiral, in order to provide the DAC with a steady datastream.)...

I think this is wrong. The truth is exactly the opposite.

The first track on a cd is in the inner spiral and the last one in the outermost, so the cd spins at higher rpm on the 1st track and reduces speed as the time elapses and the laser moves away from the center.
The angular velocity is going down so that the linear velocity remains constant (at any point on the disc the laser reads, any given moment)