Denon DRA-685 User manual

Featuring a multi-room audio function, along with video selection and high power, the DRA-685 serves as the
heart of a stereo music system while providing stereo sound for stereo video sources. With a prodigious 100 watts
of power per channel, the DRA-685 can easily drive virtually any modern loudspeaker system with authority and
clarity. A full suite of convenience and switching functions makes the DRA-685 an indispensable choice for a well
equipped music system.
Superb Stereo Sound and Multi-room Entertainment Convenience
■Signal Level Divided Construction (SLDC)
The circuit handling low-level and high-level signals have been divided
into separate blocks to ensure that influences from these signals on
each other are held to an absolute minimum. This new chassis design in
the DRA-685 is called the Signal Level Divided Construction (SLDC).
Signals for output are cleaner than before, allowing them to be repro-
duced with even greater fidelity and clarity.
■High-Quality Power Amplifier Section
100 W + 100 W (8 ohms, 20 Hz - 20 kHz, 0.05 %)
Providing 100 watts per channel, into 8 ohms, from 20 Hz to 20 kHz,
with no more than .05% total harmonic distortion, the DRA-685 provides
separates class audio performance. Together, these components provide
superb low impedance drive capability with tremendous dynamic reserve
capacity. High speed, wideband discrete power transistors provide delicacy
and impact, ideally suited to the needs of the highest quality analog and
digital sources.
■Multi Source Function
The DRA-685’s Multi Source function lets you enjoy two different pro-
grams in two different rooms. For example, listen to the CD player in the
main room, while another family member listens to the tuner in another
room in the home. Dedicated multi-room output jacks, with variable volume
level adjustment via remote control, are for connection to powered sec-
ond zone speakers or a second zone amplifier.
■Room-to-Room Remote Control
External remote control equipment, including IR re-transmitters and
IR remote receivers, such as Denon’s RC-616, 617S, 617W, and 618
devices, can be connected to the IR remote input and output terminals.
• Integral System (IS) Remote Controller (RC-872)
The DRA-685 is provided with a pre-learned remote control, that con-
tains codes for other Denon components, along with codes for other
products from other manufacturers, such as DVD, VCR, TV, etc.
• Second Zone Remote Controller (RC-873)
In addition to the main remote, the DRA-685 is also supplied with
another remote that is customized for the second zone mutli-room functions.
It is equipped with second zone source selection, recalling preset radio
stations, adjusting the volume, and other functions that can be controlled
from the second zone room.
DRA-685
AM/FM Stereo Receiver
NEW MODEL INFORMATION
Multi Room Music Entertainment System
INFRARED
SENSOR
RC-617S MULTI SOURCE AUDIO OUT
MULTI SOURCE VIDEO OUT
SPEAKER
SYSTEM-A
SPEAKER
SYSTEM-A
SPEAKER
SPEAKER SPEAKER
SPEAKER SYSTEM-B
MAIN LISTENING ROOM
SPEAKER SYSTEM-B
RC-617W
SPEAKER AMPLIFIER TV
SPEAKER
SUPPLEMENT
EMITTER
RC-618
ROOM TO ROOM
SUB ROOM 1
SUB ROOM 2 INFRARED
RETRANSMITTER
RC-616
RECEIVER
RC-616 RC-617S RC-617W RC-618

■Easy Simulcast Copy
This feature not only permits reception and recording of FM/TV
simulcast programs onto videotape, but it can also be used to combine,
for example, the sound from a CD with the picture from a video disc.
• Record Out Selector
Let’s you listen to one source (example: Tuner), while recording anoth-
er source (example: CD). Ideal for making unattended tape copies.
■Video Terminals
Stereo video sources, such as hi-fi VCR, stereo TV, and DVD can all be
easily connected to the DRA-685’s VDP, VCR and Video Aux terminals.
■Video Select Function
Allows you to select a video source, and then select an alternate
audio input source, ideal for simulcasting, as well as watching TV
sports programs while listening to radio commmentary.
■40-Station AM/FM Random Preset Memory Tuning
■Auto Preset Memory
FM stations can be searched by the tuner, and automatically stored in the
preset memory up to 40 stations, ideal for locales with many FM stations.
■Sophisticated Tuning Circuit Design
Thanks to the PLL circuit design, reception drift is a thing of the past.
The DRA-685 also has a 4-pole varactor diode in its front end to guar-
antee accurate input of station frequencies.
• Auto scanning of radio frequency bands
• Fast up/down manual tuning
• Manual step tuning
• Last-channel-tuned memory
■Other Useful Features
• Loudness Function
• Pre-Output and Main-Input Jacks
• Bass and Treble Tone Controls
• Tone Defeat
• Muting Function via remote controller
• Motor-driven Volume Control
• A/B Speaker Switching
• Last Function Memory
• Switched AC Outlets
Specifications
■Power Amplifier Section
Rated output ............................... 100 W + 100 W (8 ohms, 20Hz - 20kHz, THD 0.05 %)
Total hamonic distortion........ 0.009 % (-3 dB at rated output, 8 ohms)
Frequency response.............. 10 Hz - 50 kHz
±1.5 dB (at 1 W)
■Preamplifier Section
Input sensitivity/Impedance
PHONO(MM) ................. 3.0 mV/47 kohms
CD, TAPE, VDP,
VCR, V-AUX .................. 200 mV/47 kohms
RIAA deviation.................... ±0.5 dB (20 Hz - 20 kHz)
Tone control........................ Treble: ±10 dB at 10 kHz
Bass: ±10 dB at 100 Hz
■FM Section
Tuning frequency range...... 87.5 - 107.9 MHz
Usable sensitivity................ 1.4 µV (14.2 dBf)
S/N 50 dB sensitivity........... Mono: 2.8 µV (20.2 dBf)
(µV at 75 ohms) Stereo: 23 µV (38.5 dBf)
Signal-to-noise ratio (A-weighting) .. Mono: 80 dB, Stereo: 75 dB
Total hamonic distortion ..................... Mono: 0.15 %, Stereo: 0.3 %
Capture ratio....................................... 1.5 dB
AM suppression.................................. 50 dB
Image rejection................................... 70 dB
Effective selectivity............................. 55 dB (
±400 kHz)
Freqency response.......................... 30 Hz - 15 kHz, +0.2, -1.5 dB
Stereo separation............................ 40 dB (1 kHz)
■AM Section
Tuning frequency range................... 520 - 1710 kHz
Usable sensitivity............................. 18 µV
■General
Power supply................................... AC 120 V, 60 Hz
Dimensions...................................... 434 (W) x 171 (H) x 416 (D) mm
17.1” (W) x 6.7” (H) x 16.4” (D)
Weight ............................................. 10.0 kg, 22.0 lbs
*Design and specifications are subject to change without notice.
DENON ELECTRONICS. NIPPON COLUMBIA CO., LTD.
DIVISION OF DENON CORPORATION (USA) 14-14, AKASAKA 4-CHOME, MINATO-KU, TOKYO 107-8011, JAPAN
222 NEW ROAD, PARSIPPANY, NEW JERSEY 07054, USA http://www.denon.co.jp
TEL: [phone] http://www.del.denon.com
DENON CANADA INC.
17 DENISON STREET, MARKHAM ONTARIO, CANADA L3R 1B5
TEL: [phone]
11951299 A Printed in Japan
NEW MODEL INFORMATION
DRA-685