McIntosh MA6500 User manual

MA6500
Integrated
Amplifier
“all the premium features
you dream of in a
convenient integrated amp”
Introduce yourself to McIntosh quality with the MA6500
Integrated Amplifier.
Hardly a “slimmed down” model, the MA6500 incorporates premium
McIntosh technologies, including Power Assurance and Silent
Electromagnetic Switching, as well as several features that will assist
you as you integrate and expand your McIntosh system.
At the Heart of the MA6500’s Power Assurance System is Power Guard
clipping protection, input volume reduction that acts literally at the speed
of light to keep distortion below 2% and deliver clipping-free output.
Sentry Monitor current protection, Thermal Cutout, Turn-On Delay and
Soft start inrush protection join Power Assurance to protect and prolong
the life of your equipment.
Silent electromagnetic switching gives the MA6500 distortion-free switch-
ing. A glass tube containing oxygen-free gas and two signal leads sits in
a copper coil and shock absorbent plastic, awaiting DC voltage to create
a magnetic field that delivers the input signal and completes the circuit.
Exclusive McIntosh
Power Assurance System
Power Guard Clipping Protection
Sentry Monitor Current Protection
Thermal Cutout
DC Failure Protection
Turn-On Delay
Soft Start Inrush Protection
Illuminated Peak-Responding Meters
Silent Electromagnetic Switching
Precision-Trimmed Volume Control
Exclusive McIntosh Tone Controllers
Control Data Outputs
Remote Power Control

McIntosh Laboratory, Inc. 2 Chambers Street, Binghamton, New York 13903-2699
Tel [phone] • US Toll-Free [phone] • Fax: [phone]• www.mcintoshlabs.com
For the Consumer’s Protection: In order to ensure highest customer satisfaction, new McIntosh products may
only be purchased over the counter at Authorized McIntosh Dealers and not by mail, telephone or via the inter-
net. Products purchased by mail, telephone or via the internet are presumed to be used and are not covered by
any McIntosh Warranty. McIntosh does not warrant, in any way, products that are purchased from anyone who
is not an Authorized McIntosh Dealer or products that have had their serial number altered or defaced.
MA6500
Integrated
Amplifier
EXCLUSIVE MCINTOSH POWER
ASSURANCE SYSTEM
A collection of technologies that
enhance performance and
reliability and protect the amp and
the loudspeakers.
Power Guard clipping protection.
A waveform comparison circuit
continuously monitors both input
and output signals and dynamically
adjusts the input level to insure
maximum output power while
preventing harsh sounding
clipping distortion.
Sentry Monitor current protection
continually senses the voltage and
current of the output stage and
confines it to a safe limit, without
limiting power output.
Thermal cutouts protect your amp
from overheating if cooling air is
blocked and transistors
become too hot.
DC failure protection guards
speakers against output
circuit failure.
Turn-on delay slows operation for
about two seconds after turn-on in
order to avoid any pops or
thumps generated as other
equipment turns on.
Soft Start inrush protection
eliminates component stress
during turn-on. Thermistors in the
power transformer act as a
cushion against inrush current.
Soft Start is one of many details
that contribute to the remarkable
longevity of McIntosh equipment.
2 x 120/200 watts (8/4 ohms)
Wide power bandwidth with ultra-low distortion
Exclusive McIntosh Power Assurance System
Illuminated peak-responding meters
Silent electromagnetic switching
Precision-trimmed volume control
Loudness compensation
Exclusive McIntosh tone controls
6 source selections including phono
Switching for 2 pairs of speakers
Accommodate more sources with
McIntosh MVS3 A/V Selector
Control data output for source components
Remote power control
Remote operation of lights, screens, and drapes
with McIntosh HC1 Home Controller
Electronically regulated power supply
Gold-plated input and output jacks
Fanless convection cooling
Modular construction with steel chassis
Glass front panel with illuminated nomenclature
Infrared remote control
Headphone jack
FREQUENCY RESPONSE
20Hz to 20kHz, +0 / -0.5dB
TOTAL HARMONIC DISTORTION
0.005% max. at any level from
250 milliwatts to rated power output
per channel from 20Hz to 20kHz.
INTERMODULATION DISTORTION
SMPTE 0.005% maximum if
instantaneous peak output does
not exceed 400W per channel
POWER OUTPUT
200, 120 watts minimum sine wave
continuous average power output
per channel, both channels
operating, into a load impedance of
4, and 8 ohms respectively.
A-WEIGHTED SIGNAL-TO-NOISE RATIO
Power amp: 110dB
below rated output
High level: 100dB
below rated output (90dB IHF)
Phono: 90dB below
10 mV input (84dB IHF)
INPUT IMPEDANCE
High level: 22k ohms
Phono: 47k ohms, 65pf
Main in: 20k ohms
OUTPUT LOAD IMPEDANCE
4 or 8 ohms
INPUT SENSITIVITY
High level: 250mV for 2.5V
rated output (50mV IHF)
Phono: 2.5mV for 2.5V rated
output (o.5mV IHF)
Main in: 2.5V for rated output
DAMPING FACTOR
230 (8 ohms)
120 (4 ohms)
RATED POWER BAND
20Hz to 20kHz
DYNAMIC HEADROOM
2.4dB
MAXIMUM PREAMP VOLTAGE OUTPUT
8V from 20Hz to 20kHz
MAXIMUM INPUT SIGNAL
High level: 8V
Phono: 90mV
VOLTAGE GAIN
High level to tape: 0dB
High level to main: 20dB
TONE CONTROLS
Bass and treble: + 12dB
POWER GUARD
Clipping is prevented and THD does
not exceed 2% with up to14dB
overdrive at 1kHz
POWER REQUIREMENTS
120V 50/60Hz, 4A
DIMENSIONS (H X W X D)
inch: 71⁄16" x 171⁄2" x 181⁄8"
cm: 17.9 x 44.5 x 46
includes clearance for connectors
knob clearance: 11⁄8" (2.9 cm)
WEIGHT
41 lbs. (18.6kg) net
60 lbs. (27.3kg) shipping
9.02.MA6500.20k.MSP 35001900