Sansui AU 6500 Brochure

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SOLID STATE INTEGRATED AMPLIFIER This handsome
package of advanced circuitry and performance characteristics could
only come from a manufacturer as specialized as Sansui. A totally-
new integrated amplifier with a host of special features, the AU-
6500 represents another milestone in the company's pursuit of
quality and excellence. In terms of performance, the AU-6500
ranks very near to the finest amplifier ever made, meaning you
could match it only by making a tremendous investment in special-
ized studio-type equipment. The AU-6500 boasts such performance
characteristics as total harmonic distortion and intermodulation
distortion which has been limited to below 0.1% throughout the
audio spectrum and well beyond. With its super-wide power band-
width of 5-40,000Hz, you can achieve RMS power of 32 watts per

hannel each channel driven, into 8 ohms, along with total harmonic

stortion which never exceeds 0.1 %- Inside the AU-6500 are a PNP-

NPN-PNP heterojunction three stage direct-coupled equalizer ampli-
fier with an input capacity of no less than 300mV RMS (1kHz) assur-
ing such a wide dynamic range. There are also low-noise PNP
transistor tone control circuits and a direct-coupled OCL pure com-
plementary power amplifier employing two 6,800/1F jumbo power
supply capacitors. And to make this a total-performance component,
the AU-6500 is equipped with a variety of convenience features,
including a 4-chandel adaptor switch, low and high filters, muting
and loudness controls, and the ability to handle up to two tape decks.
The AU-6500 it has been meticulously tested, retested and proven
to perform to all the company's claims and promises. You're cer-
tainly not going to go wrong with a piece of equipment like this. And
youre never going to go wrong with the company that made it.
SansuL

Sans-111°.

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0.1%; DISTORTION OVER AND BEYOND
THE AUDIO SPECTRUM: Both total har-
monic distortion and intermodulation distor-
tion of the AU-6500 stay below 0.1% over
and well beyond the entire audio spectrum.

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5-40.000Hz POWER BANDWIDTH: Even
at peak power, delivering its 32 watts of
RMS power per channel each channel driven.
into 8 ohms with total harmonic distortion of
0.1%,theAU-6500's output power bandwidth
is an incredible 5Hz to double the upper limit
of the audible frequency range140,OOOHz.
DIRECT-COUPLED OCL PURE COMPLE-
MENTARY POWER AMPLIFIER: The com-
pletely direct-coupled OCL (output-capacitor-
less) pure complementary amplifier is driven
by dual (plus and minus) powerful, stable
power supplies from two 6,800/iF jumbo
capacitors. This amplifier permits negative
feedback to be evenly applied from the DC
range on up to the super highs. Its damp»
ing factor is perfectly flat all the way to
the deep low frequencies, which helps in
reducing the irregular movement of the
speaker cones to an unprecedented degree.
In the important differential amplifier, se-
lected lowvnoise silicon transistors and ripple
filters work together to create extremely
high stability.

DIRECT-COUPLED 3-STAGE EQUALIZER
WITH 300mV PHONO INPUT CAPACITY:
A high 44V DC voltage from a specially
stabilized power supply is applied to the
PNP-NPN-PNP heterojunction three-stage
direct- coupled equalizer amplifier. Phono in-

SPECIFICATIONS
POWER OUTPUT
IHF MUSIC POWER 94W (41)) at 1,000Hz
CONTINUOUS POWER (each channel driven)
32/32W (8&2) at 1,000Hz
CONTINUOUS POWER (both channels driven)
30/3OW (8;!) at 1.000Hz
CONTINUOUS POWER (both channels driven at
rated distortion
20-20.000Hz) 28/28W (89)
TOTAL HARMONIC DISTORTION (at rated output)
less than 0.1%
INTERMODULATION DISTORTION
(70Hz: 7.000Hz=4:1
SMPTE method)
less than 0.1% at rated
output
IHF POWER BANDWIDTH (each channels driven
at 80) 5-40.000Hz
FREQUENCY RESPONSE (at 1W power output)
PHONo-l AND-2 RIAA equalization curve
10.5dB (30-15.000Hz)
OVERALL (from AUX) 10-30,000Hz :1.0dB
MAIN AMPLIFIER ONLY 10-40,000Hz 3: 1.0dB
LOAD IMPEDANCE 4-160
DAMPING FACTOR approximately 40 at 8!) load
INPUT SENSITIVITY AND IMPEDANCES
(at 1.000Hz)
PHONO-l AND-2 2.5mV (50kt!)
(MAXIMUM INPUT CAPABILITY)
300mV(THD: less than 0.5%)

SANSUI ELECTRIC CO.. LTD) 14-1, 2-CHOME. IZUMI, SUGINAMl-KU, TOKYO 168, JAPAN/TELEPHONE: 3231111/TELEX: 2322076
SANSUI ELECTRONICS CORPORATION 55-11 QUEENS BLVD. WOODSIDE. NEW YORK 11377, U.S.A./TELEX: NEW YORK 422633 SEC Ul
SANSUI AUDIO EUROPE SA. DIACEM BUILDING. VESTINGSTRAAT 53-55. 2000 ANTWERP. BELGIUM/TELEX: ANTWERP 33538

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put accepts up to 300mV(1kHz)RMS with
ease, giving an unprecedented wide dynamic
range.

LOW-NOISE TONE CONTROL AMPLIFIER:
From its first stage to its output stage, the
tone control amplifier exclusively employs
select low-noise silicon transistors for low
distortion, a high signal-to-noise ratio and
wide response. For perfect control effects,
it is equipped with bass and treble controls
set in click stops of 3dB each and adjustable
within ilSdB.

HIGH AND LOW FILTERS:

Efiective high and low filters are provided on
the AU-6500 to eliminate common low-
frequency noise (such as turntable motor
rumble) and high-frequency noise (suchas
scratch noise from a worn record).
4-CHANNEL ADAPTOR TERMINAL
SWITCH: The AU-6500 is ready for 4-
channel when you are. Special facilities are
provided on the amplifier to connect and
control a 4-channel adaptor. Pushing down
the lever switch activates the external
4echannel adaptor.

TAPE MONITOR AND TWO PHONO IN-
PUT CIRCUITS: The AU-6500 connects
one tape deck, but still allows tape dubbing
from one tape deck to a second if you utilize
the 4-channel adaptor jack for the second
deck. There are also two phono input cir-
cuits, with impedances of 50kt).

PRE- AND POWER AMPLIFIERS SEPA-
RABLE: The preamplifier and power amp-
lifier sections may be separated for inde-

TUNER 100mV (50kt!)
AUX 100mV (50km
TAPE MONITOR (Pin) 100mV (50kt!)
TAPE MONITOR (DIN) 100mV (50kt?)
4-CH ADAPTOR 100mV (50kt!)
MAIN AMPLIFIER ONLY 800mV (40km
OUTPUT VOLTAGE AND IMPEDANCE
(at 1,000Hz)

TAPE REClPin) 100mV
TAPE REClDIN) 30mV
4-CH ADAPTOR 100mV

PRE-AMPLIFIER 0.8V (THD: less than 0.08%)
(MAXIMUM OUTPUT VOLTAGE)
4.0V (THD: less than 0.5%)

CROSSTALK (at 1,000Hz. rated output)

PHONO-l AND-2 better than 50dB

TUNER better than 50dB

AUX better than 50dB

MAIN AMPLIFIER better than 50dB
IHF HUM AND NOISE

PHONO-l AND-2 better than 70dB

TUNER better than 80dB

AUX better than 80dB

MAIN AMPLIFIER ONLY better than 100dB
CONTROLS

BASS +15dB. -15dB at 50H:

TREBLE +15dB. -15dB at 15,000Hz

LOUDNESS +10dB at 50Hz. +8dB at

10,000Hz (Volu me control
-30dB)

pendent use simply by unplugging the
jumper connectors.
CONNECTS TWO PAIRS 0F SPEAKER
SYSTEMS: You can connect up to two
pairs of speaker systems with the AU-6500,
and drive them either separately or simul-
taneouslygor cut them both offfiby a front-
panel control.

COMPLETE PROTECTION CIRCUIT: The
AU-65OO employs a newly-designed protec-
tion circuit utilizing three transistors, six
diodes and a relay to protect the vital power
transistors and your speaker systems in the
event speaker terminals are accidentally
shorted or other abnormal conditions occur.
MATCHING, ELEGANT APPEARANCE:
Sansuis traditional design for its AU series
of components is responsible for the AU-
6500's striking good looks. Its dimensions
are the same as the Sansui TU-7500 stereo
tuner, meaning you can place the two side
by side. or on top of each other. A wooden
cabinet is available at extra cost.

OTHER CONVENIENCE FEATURES

1) An audio muting switch reduces volume
by -20dB over the entire frequency range
2) A loudness control switch.
3) A convenient mode switch
select STEREO and MONO.

4) A DIN connector socket simplifies tape
deck connections.

5) Headphone jack.

6) Three AC outlets are provided, two of
which are controlled by the power switch,

7) Two large ground terminals.

lets you

LOW FILTER

-12dB at SOHz (GdB/oct.)
HIGH FILTER -12dB at l0,000Hz(6dB/0ct.)
SWITCHES
SELECTOR PHONO-2, PHONO-l,
TUNER, AUX
MODE STEREO, MONO
TAPE MONITOR SOURCE, PLAYBACK
MUTING NORMAL, -20dB
LOUDNESS OUT, IN
LOW FILTER OUT, IN
HIGH FILTER OUT, IN
4-CH ADAPTOR OUT, IN

SPEAKER SELECTOR POWER OFF, A, B, A+B,

SPKR-OFF

Transistors: 36 Diodes: 15,

Zener Diode: 1

PAM/ER REQUIREMENTS 100, 117. 220, 240V
50/60Hz

SEMICONDUCTORS

POWER CONSUMPTION
MAXIMUM CONSUMPTION 125VA
RATED CONSUMPTION 65W

DIMENSIONS 140mm (5",j)HX440mm
(17".,)WX322mm(12,51u)D
WEIGHT 11.5kg (25.3 lbs.)

Design and specifications subject to chang
without notice for improvements.

Sansui.