Denon PMA-2000 IV - Amplifier User manual

■Delicate details on a powerful foundation:
The hallmark of UHC-MOS single push-pull technology
The ultra-high-current (UHC) MOS was developed and subsequently
praised for its ability to drive speakers while preserving the delicate
details of high-quality music recordings. This amplification device is
capable of delivering peak current as much as 3 to 10 times greater
than that of conventional MOS-FET devices, resulting in a successful
balance between power to drive the speakers and ability to maintain
the integrity of delicate musical nuances. From the timbre created by a
violin soloist who gently lifts the bow from the strings in a quiet final
moment to the grandiose strength of a full orchestra playing in fortissimo,
the UHC-MOS single push-pull circuit ensures you will hear all the
breadth and details of this sound.
■Leakage Canceling (LC) Mounted Twin Transformers
for Wide Dynamic Range and Low Noise
By employing a large magnetic circuit with low magnetic flux density,
the power transformer achieves superior response characteristics
capable of accommodating musical signals with a broad dynamic
range even in areas of magnetic saturation. The LC mount, which
serves to eliminate mutual interference caused by magnetic fields and
other factors, significantly reduces leakage flux which is a source of
noise inside the amp. The result is a powerful speaker drive that
ensures both remarkably transparent speaker output and low noise.
The voltage amplification stage and the coiled wiring of the phono
equalizer power supply have also been separated, and the transformer
for the control circuit that controls signal relays and other functions
have been separated as well, to thoroughly eliminate mutual interference
between the circuits.
■Powerful high-current dynamic power circuit
with newly-developed large-capacity block capacitor for audio
High-current Schottky barrier diodes in the rectifier circuit have been
selected for their low-noise characteristics and high-speed response to
provide high-power support for the expressive power of the UHC-MOS
circuit. The combination of Denon's newly-developed large-capacity
block-type electrolytic capacitor for audio in the power section and the
UHC single push-pull circuit supplies plenty of clean current required
by the speakers for the entire audible frequency range.
■Chassis divided into 6 blocks
The power amp block in the PMA-2000 IV R has been designed in a
twin monaural configuration separating the left and right channels to
ensure high sound quality free of external noise and mutual interference
among circuits. To provide thorough shielding at the signal level, steel
plates of 1.6 mm thickness coated in black have been used to divide
the chassis into 6 blocks, a design that preserves sound quality by
preventing interference among the blocks and faithfully reproduces the
sonic ambience of the original recording.
■ Wide-Range Play Capability for DVD-Audio or SACD
The power amp circuits of the PMA-2000 IV R have been meticulously
designed to reproduce the exceptionally high sound quality with wide
frequency response from 10 Hz to 100 kHz in advanced, high-quality
digital sources such as DVD-Audio and SACD
PMA-2000 IV R
Integrated Amplifier
NEW MODEL INFORMATION
Powerful yet Sensitive, the Newly-developed Large-capacity Block Capacitor
Provides Greater Support for the Outstanding Expressive Power of UHC-MOS.
The PMA-2000 IV R is loaded with an UHC-MOS single push-pull circuit, leakage canceling (LC) mounted twin transformers, and highly rigid chassis
divided into 6 separate blocks, and features a newly-developed large-capacity block capacitor in the power section. This new feature provides
greater support for the outstanding expressive power of UHC-MOS and produces a more spacious, dynamic sound from high-quality digital
sources such as DVD-Audio and SACD.
The PMA-2000 IV R is also equipped with a power amp direct input terminal that lets you use the PMA-2000 IV R as a stereo power amp. You can
also harness the superior performance of the PMA-2000 IV R for use as a power amp for multi-channel output.
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■Power Amp Direct Input
The PMA-2000 IV R provides a power amp direct input that lets you
use its superior amplifier performance as a power amp for multi-channel
output. The power amp direct input can be used when you set the
switch on the rear panel to ON, and multi-channel output is possible
when you switch the Input Selector on the front panel to AUX-2/Amp
Direct. Since the PMA-2000 IV R operates as an integrated amp in the
other positions, you can easily decide whether you want to use the
PMA-2000 IV R as a multi-channel power amp or an integrated amp.
Denon engineers have also devoted considerable attention to preserving
sound quality in these instances by selecting the best quality relays
and other parts.
■PRE OUT terminal
The PMA-2000 IV R's PRE OUT terminal lets you connect a subwoofer
to your system. Thorough attention to sound quality is again in evidence
here in that PRE OUT output occurs through a discrete-configured
MOS-FET flat amp inherited from Denon's high-end PRA-S1 pre-amp.
■Precision Mechanical Ground Construction,
to Thoroughly Suppress Vibration
Radiator stabilizers and radiators dampened with elastic rubber have
been mounted directly near feet endowed with high vibration absorption
characteristics, in order to minimize the effects of vibration from the
power transformer and other sources. The top cover is also impervious
to vibration, as is the volume knob which can easily transmit vibration
to the signal as well. The PMA-2000 IV R ensures that vibration is
thoroughly absorbed in all possible areas so that it can deliver
consistently high sound quality.
■Precision Signal Ground Circuit, to Preserve Signal Purity
In the PMA-2000 IV R, the adverse effects of noise from the constant
current circuit and other sources onto the signal as it passes through
the power amp stage are minimized by the careful placement of
ground points for each circuit. The signal is thus amplified under ideal
conditions to produce an eminently clean, transparent sound.
■Large, Gold-Plated Speaker Terminals
Supporting Bi-Wiring
The speaker terminals on the PMA-2000 IV R feature gold plating on
precut brass to minimize signal transfer loss. The hole diameter of the
clamp section is a generous 6 mm, allowing sufficient room to connect
even super-thick speaker cables. Two sets of terminals have been
provided, and bi-wiring is also supported.
■High-Performance Phono Equalizer
The PMA-2000 IV R includes a high-performance Phono equalizer that
employs a first-stage circuit in a discrete configuration with low-noise
FETs. This equalizer allows lovers of analog music sources to enjoy
high-quality playback via a dedicated stable power supply. A simple
switch selection permits use of a MM or MC cartridge.
Specifications
■Power Amplifier Section
Rated output power . . 80 W + 80 W (8 ohms, 20 Hz - 20 kHz, THD 0.07 %)
160 W + 160 W (4 ohms, DIN, 1 kHz, THD 0.7 %)
T
otal harmonic distortion 0.01 % (-3 dB at rated output 8 ohms)
Input sensitivitiy/Input inpedence
P. DIRECT . . . . . . . . . 0.9 V / 47 kohms
Amplifier factor . . . . . . 29 dB
■ Preamplifier Section
Input sensitivity/Impedance
PHONO(MM) . . . . . . . 2.5 mV/47 kohms
PHONO (MC) . . . . . . . 0.2 mV/100 ohms
CD, TUNER, DVD/AUX-1,AUX-2,
TAPE-1/DAT, TAPE-2/MD 135 mV/12 kohms (Source Direct ON)
PRE out . . . . . . . . . . . 0.9 V (at 135 mV input)
RIAA deviation . . . . . . 20 Hz - 20 kHz ±0.5 dB(MM)
■ Overall characteristics
Frequency response . . 5 Hz - 100 kHz (0,-3 dB)
Signal-to-noise ratio (A-weighted)
PHONO (MM)/(MC) . . 89 dB (at 5 mV input) / 74 dB (at 0.5 mV input)
CD, TUNER, DVD/AUX-1, AUX-2, TAPE-1/CD-R,
TAPE-2/MD . . . . . . . . . 108 dB (input terminals shorted/ Source Direct ON)
Tone control . . . . . . . . 100 Hz ±8 dB (Bass), 10 kHz ±8 dB (Treble)
■ General
Power supply . . . . . . . AC 120 V, 60 Hz
Power consumption . . 6.0 A
Dimensions . . . . . . . . . 17.1 (W) x 7.1 (H) x 18.8 (D) inch
434 (W) x 180 (H) x 478 (D) mm
Weight . . . . . . . . . . . . . 52 lbs 14.7 oz, 24.0 kg
■ REMOTE CONTROL UNIT (RC-858)
NEW MODEL INFORMATION PMA-2000 IV R
*Design and specifications are subject to change without notice.
DENON ELECTRONICS (USA), INC.
19 CHAPIN ROAD, P.O.Box 867, PINE BROOK, NJ 07058-9777 U.S.A.
TEL : [phone] www.denon.com
DENON CANADA, INC.
505 APPLE CREEK BLVD, UNIT 5, MARKHAM, ONTARIO, CANADA L3R 5B1
TEL : [phone] www.denon.ca
DENON, LTD.
3-16-11 YUSHIMA, BUNKYO-KU, TOKYO 113-0034 JAPAN
12900502 A Printed in Japan
PHONO
CD
TUNER
DVD/AUX-1
AUX-2
TAPE-1/CD-R
TAPE-2/MD
TAPE-1/CD-R
TAPE-2/MD
PRE OUT
POWER AMP
DIRECT
MM/MC
P.B.
P.B.
REC
REC REC OUT SELECTOR
INPUT SELECTOR
BALANCE VR
BUFFER
BASS TREBLE
TONE
CIRCUIT
SOURCE DIRECT
POWER AMP DIRECT
FLAT AMP
POWER AMP
PROTECTOR
CIRCUIT
HEADPHONE
SPEAKER OUTPUT A
(MAIN)
SPEAKER OUTPUT B
(BI-WIRING)
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