Denon PMA-2000R User manual

PMA-2000R
Audiophile Integrated Amplifier
The PMA-2000R uses dual power transformers to provide extended high current capability with substantial
power output.The chassis is divided to enable efficient placement of circuits so that left and right signal paths
do not interfere with each other and negatively affect sound quality between the two channels.
■80 W + 80 W. More Power, and Greater
Dynamic Range via UHC Ultra High Current
Single Push-Pull Circuitry
A high-current UHC-MOS amplification device has been used
to boost the power supplied to the UHC single push-pull circuit-
ry. This is an innovative design by DENON that finally resolves
the conflicting problem of how to produce a solid capacity to
drive the speakers while preserving the delicate details of the
music. The PMA-2000R provides 80 watts per channel into
8 ohms with nearly double that into 4 ohms to drive virtually any
speaker system. Superior current linearity ensures a stable
supply of current to the speakers, bringing out all of the dynam-
ic range irrespective of impedance or efficiency.
■The UHC-MOS High-Current Amplification Device
To obtain the ability to bring out all the delicate nuances of
sound and the need for dynamic speaker drive, the
PMA-2000R has adopted a high-current UHC-MOS amplifi-
cation device capable of delivering a peak current of 120A to
the output stage, as much as 3~10 times greater than that of
conventional MOS-FET devices. The current supply capacity
of the UHC-MOS has been improved to exceed even that of
bipolar transistors while preserving the high-quality sound of
MOS-FETs. This ideal amplification device also incorporates
single push-pull technology to eliminate variations in amplifi-
cation operation.
■Leakage Canceling Dual PowerTransformers
The PMA-2000R features dual parallel-connected twin trans-
formers with vastly improved characteristics in the magnetic
and coiled wire circuits as originally developed for the
DENON POA-S1 monaural power amp. The transformers
have also been “leakage canceling” (L.C.) mounted in order
to eliminate mutual interference caused by magnetic fields
and other factors. As a result, leakage flux from the power
transformers, a potential source of noise, is suppressed to a
minimum, enabling the PMA-2000R’s power supply section
to supply clean, high-quality DC energy to the output stages.
Comparison of single push-pull output current characteristics
(Source: DENON)
UHC single push-pull BJT single push-pull
Comparison of transformer leakage flux (Source: DENON)
Two LC mounted transformers Two transformers positioned
at same polarity
Leakage cancelling (L.C.) mounted dual power transformers
NEW MODEL INFORMATION

Specifications
■Power Amp Section
Rated output, both channels driven 80 W + 80 W (8 ohms, 20 - 20 kHz, 0.07%THD)
160 W + 160 W (4 ohms, DIN 1 kHz, 0.7%THD)
Total Harmonic Distortion 0.01% (-3 dB rated output, 8 ohms load)
■Preamplifier Section
Input sensitivity/Impedance
PHONO 2.5 mV/47 kohms (MM), 200 µV/100 ohms (MC)
CD, TUNER, DVD/AUX 150 mV/47 kohms (Source Direct OFF)
TAPE-1/DAT, TAPE-2/MD 150 mV/47 kohms (Source Direct OFF), 150 mV/13 kohms (Source Direct ON)
RIAA deviation/PHONO 20 Hz ~ 20 kHz ±0.3 dB (MM/MC)
■General Characteristics
S/N ratio (A-weighted)
PHONO 91 dB (MM), 76 dB (MC)
CD, TUNER, DVD/AUX 110 dB (input terminals shorted/Source Direct ON)
Tone controls 100 Hz ±8 dB (BASS), 10 kHz ±8 dB (TREBLE)
■Other Specifications
Power supply AC 120 V, 60 Hz
Power consumption 6 A
Dimensions 434 (W) x 180 (H) x 478 (D) mm (including feet, knobs, terminals)
17-1/8” x 7-1/8” x 18-3/4”
Weight 20.0 kg, 44 lbs
*Design and specifications are subject to change without notice.
DENON ELECTRONICS LABRADOR S.A. DE C.V.
DIVISION OF DENON CORPORATION (USA) ZAMORA NO.154, COL. CONDESA, MEXICO D.F.C.P. 06140
222 NEW ROAD, PARSIPPANY, NEW JERSEY 07054, USA TEL: [phone]
TEL: [phone] www.del.denon.com
DENON CANADA INC.
NIPPON COLUMBIA CO., LTD.
17 DENISON STREET, MARKHAM ONTARIO, CANADA L3R 1B5 14-14,AKASAKA 4-CHOME, MINATO-KU, TOKYO 107-11, JAPAN
TEL: [phone] Denon Home Page Address: http://www.denon.co.jp
■Rectifier Circuit Accommodating High-Speed,
Large-Capacity Current
Advanced technology that was developed for the DENON
PMA-S1 integrated amp has been used in the rectifier circuit
of the PMA-2000R. A large rectifier bridge with superior abili-
ty to supply high current and a first recovery diode with dra-
matically accelerated operating speed have been connected
in parallel so that the PMA-2000R can accommodate both
high speed and high current, to ensure true low impedance
drive capability.
■Highly Rigid, 6-Block Separated Chassis
The highly rigid chassis of the PMA-2000R is based on the
twin monaural construction featuring independent power amp
blocks for the left and right channels in order to eliminate
degradation in sound quality caused by noise and mutual
interference between the circuits. In addition, circuits han-
dling signals of different levels are also isolated in their own
separate blocks, resulting in a sophisticated 6-block design
that preserves signal purity all the way from input to output.
■Large, Gold-Plated Speaker Terminals
Supporting Bi-Wiring
■High-Performance MM & MC Phono Stage
■Premium Parts Selected for Best Sound Quality
High current, high voltage, low ESR storage capacitors