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MA-
362
Audioaccess
®
Twelve
Channel
Amplifier
www.audioaccess.com
The Audioaccess MA-362 Twelve
Channel Amplifier represents a high value
approach while providing twelve channels
of clean amplifier power for multi-room
system applications.
Power to Spare
With a power rating of 50 Watts per
channel at 8 Ohms from 20Hz to 20kHz
with less than .05% THD, the MA-362
will drive virtually any in-wall loudspeaker
to room filling volume. Power into 4
Ohms is even more impressive at 75
Watts per channel. All channels may be
bridged if additional power is required.
Cool operation is ensured with a design
incorporating heat sinks, flow through
ventilation and low-noise fans.
After a series of careful evaluations
and tests, Madrigal has chosen to imple-
ment a conservative and proven design
philosophy with the MA-362 with the
added benefit of improved sound quality
and long component life. Power for each channel is delivered by a pair of high
current output transistors capable of
delivering over 200 watts, much higher
power than the rated 50 watts per chan-
nel. For example, the output transistors
for each channel can handle up to 12
amps. At rated power, the MA-362 is
drawing only about 3 amps of current per
channel, ensuring its reliable performance.
Control Capabilities
Each pair of channels is controlled by a
Trigger Source Selector, a three-position
switch that selects signal sensing, voltage
trigger input or link (to the trigger signal
of the zone to the immediate left) as the
source for muting control within each
individual zone. A two position Signal Link
Selector, is also provided and is
used to link a zone to the Signal Input
connector of the zone to its left.
Installation Flexibility
Ease of installation, a hallmark of all Audioaccess products is maintained in the
new MA-362. An external speaker termi-
nation board can be ordered in advance
to allow the installing dealer to pre-wire
all of the loudspeakers in the system before
the amplifier is delivered for final installa-
tion. Final hook up consists of plugging
the speaker termination board into a slot
in the rear panel of the amplifier.
Summary
The MA-362 features, performance
and reliability make it the perfect
amplifier choice for a wide variety of
multi-room audio system applications.
Simply Ingenious
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A Harman International Company
Audioaccess ®
Madrigal Audio Laboratories, Inc.
P.O.Box 781
Middletown, CT 06457-0781
Internet: www.madrigal.com
Fax: 860.346.1540
©2002 Madrigal Audio Laboratories, Inc.
20202AA - SS/MA-362
Specifications
Rack mountable chassis
Discrete amplifier design for improved
sound quality
Signal Input Connector: six dual RCA jacks,
one per two channel
Four position switch to select Stereo, Bridged
Right, Bridged Left, or mono operation for
each zoneIndependent level controls for each amp channel
Trigger Input, euro-style connector, accepts 3
to 24V AC or DC, to unmute amp channels
in the zone
Trigger Source Selector: three position switch
to select signal sensing, voltage trigger input
or link (to the trigger signal of the zone to the
immediate left) to control muting in the zone.Plug-in Speaker Termination Board, a snap for
advance installations (available separately, not
included with the amplifier)
Signal Link Selector: two position switch to
link a zone to the signal input connector of
the zone to its left (excluding zone 1)
Power Switch on Front panel
Bi-color LED Power Indicator
Features
Number of Channels: 12, configured as 6
left/right pairs (zones)
Power Output (Unbridged): 50W @ 8-,
75W @ 4-, 20 - 20k Hz, All Channels Driven
Power Output (Bridged): 150W @ 8-,
20 - 20k Hz, All Channels Driven
THD+Noise: <0.05%, at rated power,
20 - 20k Hz
IMD: <0.05% (SMPTE)
Frequency Response: 20 - 20k Hz,
+0/-0.2 dB, at rated power, 4-load
Bandwidth: 5 - 75k Hz. +0, -3dB, at rated
power, 4-loadS/N: >100dB unweighted (ref: Rated Power),
unbridged into 8-
Crosstalk: <-70 dB (ref: Maximum Output)
between any two channels (no audible
crosstalk)
Protection: Short Circuit, Over Current, DC,
Thermal
Muting: Turn on, Turn off, Signal Sensing, and
Triggered per zone
Input impedance: 24k-
Input Sensitivity: 1.0 Vrms (with input trim at
minimum attenuation)
Input Level Trim Range: 20dB
Gain: 26dBDimensions and weight:
Height: 7" (178 mm)
(4 rack spaces, not including feet)
Width front panel: 19" (483 mm),
Width chassis: 17
11-16" (450 mm)
Depth: 17 11-16" (450 mm)
Weight: 60 lb (27.2 kg) (without carton)
Features, specifications and dimensions are subject to change.
Audioaccess TI-501 Speaker Termination Board (Sold separately)
