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Extensive research carried out over the last few years has been
fully employed in producing the integrated CDX2 CD player. Naim
has made as few compromises as possible to ensure that the CDX2
offers complete musical satisfaction, rivalling that of the finest
analogue turntables.
Integrity and stability of the RF signals read by the
laser have been prime design considerations. A suspended transport
and low mass magnetic clamping system ensures that the disc spins
accurately and silently, unhindered by mechanical resonance.
The mass of the custom-made glass reinforced front-loading
drawer mechanism has been carefully calculated to optimise rigidity
and isolation. The addition of anti-vibration, resonance-controlling
feet compliment the elegant new cast and extruded anti-magnetic
chassis to protect the sensitive internal components from resonance
and microphonic vibration. Additionally' the internal shielding
has been improved bringing about further upgraded performance and
lower noise.
Paths between critical components are as short as possible
to preserve delicate signals and each stage of the circuitry is
powered by a separate regulated supply. Correct earthing is used
throughout and there are no digital or headphone outputs.
Both the transport and chipset have been upgraded for
the CDX2. The HDCD decoder/digital filter is only activated when
playing encoded discs. Eight-times over sampled data is then sent
to two (one per channel) Burr Brown PCM mono D/A converters. A separate,
fully optimised master clock controls all main digital functions,
and the clock configuration and layout are engineered to minimise
jitter. A seven-pole analogue filter follows the DAC to remove spurious
noise.
The CDX2 has a fully double-regulated power supply with
20 low-noise, regulated power supplies on the main circuit board,
plus a separate supply on the servo control board and another on
the display board. It is a stand-alone, mains powered machine, which
may also be used with the XPS ultra low noise power supply, providing
a substantial improvement in sound quality.
Naim research has proved that divorcing the main power
supply from a CD player is wholly beneficial, whereas the more common
arrangement of housing the converter circuitry in a separate box
causes many problems. The Naim XPS power supply is extremely sophisticated
with six separately regulated, ultra low noise outputs, featuring
a toroidal transformer and six power regulators. This ensures complete
stability of the ultra-sensitive circuitry in the CDX2. The same
external supply is used with the Naim flagship CDS3 CD player, thus
providing a further possible upgrade path from one player to the
other.
All main control functions are handled by a microprocessor
running Naim-written software. Every aspect of the SAA 7376 servo
controller/decoder functionality is under software control: Naim-written
codes allow maximised performance in all areas. For example, the
transport parameters are optimised for each disc as it is loaded.
In addition, special care has been taken to ensure that the player/user
interface is as logical as possible with extra features such as
"display off" (for improved sound quality) and program cancel, where
tracks the listener does not want to hear can be quickly selected.
Worthwhile user features have been added: in addition
to a clearer layout of the back panel, RC5 and optional RS232 ports
have been fitted, allowing seamless integration into even the most
complex of home installations.
In common with the flagship NAC 552 pre-amplifier, the
CDX2 has user-configurable outputs, allowing a choice between the
preferred DIN output and RCA phono connections, allowing the CDX2
to be used with a wide range of other manufacturers' cables and
components.
This machine is designed to be the best in its class,
incorporating genuine technological advances to provide a thoroughly
enjoyable musical experience.
- Ultra-high quality CD player.
- Twenty power regulators make up a fully double-regulated power
supply with exceptional dynamic stability.
- User-configurable versatile (DIN/phono) outputs.
- Full infrared remote control.
- RC5 input for wired remote control in complex installations.
- Optional RS232 input/output for use in full home automation
systems.
- The optional Naim XPS power supply provides six regulated power
supplies; this significantly reduces supply noise for all circuitry.
The Naim CDX2 plays music from CD in a wholly natural,
believable way, providing the same involvement and enjoyment as
a high-end analogue source but with tremendous consistency and reliability.
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