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 implement 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 channel. 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 termination 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 installation. 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.
The Audioaccess MA-362 Twelve Channel Amplifi er represents a hi gh v alue approach while provi ding t welve channels of
clean amplifier power for multi-room system applications.
Power to Spare
With a power rati ng of 50 Watts per channel at 8 Ohms from 20Hz to 20kHz with less than .05% THD, the MA-362 will
drive virtuall y any i n- wall loudspeaker to room filling volum e. Power into 4 Ohms is even more impressive at 75 Watts per
channel. All channels may be bridged if additional power is required. Cool operati on is ensured with a design
incorporating heat sinks, flow through v entilation and low-noise fans. Aft er a series of car eful evaluations and tests,
Madrigal has chosen to im plement a conservative and proven desi gn philosophy with the MA-362 wit h the added benefi t
of improved sound quality and long component lif e. Power for eac h c hannel is delivered by a pair of high current output
transistors capable of delivering ov er 200 watts, muc h higher power t han t he r ated 50 watts per channel.
The output transistor s for each channel can handle 12 amps of curr ent. At rat ed power, the MA-362 draws 2.5 amps of
current, ensuri ng ample safe operating area headroom and rel iable performance.
Zone Muting Control
Each pair of channel s is contr olled by a three-positi on Trigger Source swit c h to select signal sensing, volt age trigger or
link (to the trigger si gnal of the zone to the immediate left).
Unique In put Bussi n g
A two position Signal Link switch is also provided for each zone. This allows assignment of direct input to the zone, or to
share the source utili z ed by the z one t o its l eft, elim inating the need for Y-cords to di stri bute common inputs to multiple
zones.
Installation Flexibility
Ease of installati on, a hallmark of all Audioacc ess products i s maintained in the new MA-362. An exter nal speaker
terminati on boar d c an be ordered in advance to allow termination of loudspeakers before the amplifier is delivered for final
install ation. At final, simply plug the speaker termination board onto the r ear 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.
Specifications:
• Number of Channels: 12, c onfigured as 6 left/right pairs (zones)
• Power Output (Unbridged): 50W @ 81Ú2,
• 75W @ 41Ú2, 20 - 20k Hz, All Channels Driven
• Power Output (Bri dged) : 150W @ 81Ú2,
• 20 - 20k Hz, All Channels Driv en
• 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, 41Ú2 load
• Bandwidth: 5 — 75k Hz. +0, -3dB, at rated power, 41Ú2 load
• S/N: >100dB unweighted ( r ef: Rated Power), unbridged int o 81Ú2
• Crosstalk: <- 70 dB (ref: M aximum Output) between any two channels (no audi ble crosstalk)
• Protection: S hort Cir c uit, Over Cur r ent, DC, T hermal
• Muting: Turn on, Turn off, Signal Sensing, and Triggered per zone
• Input impedance: 24k1Ú2
• Input Sensitiv ity: 1.0 Vrms (with input trim at minim um attenuat ion)
• Input Level Trim Range: 20dB
• Gain: 26dB
Page 5
• Dimensions and weight:
Height: 7" (178 mm) (4 rack spaces, not including feet)
Width front panel : 19" ( 483 mm), Wi dth c hassis: 17 1/ 16" ( 450 mm)
Depth: 17 1/16" ( 450 mm). W eight: 60 lb ( 27.2 kg) (without carton)
Features, specifications and dimensions are subj ec t to change.
Page 6
Page 7
Page 8
Page 9
Page 10
MA362
Electrical/Mechanical Parts Lists
Note:
These parts lists may contain some part
numbers that are not valid, or No Longer
Available.
Descriptions and Reference Designators,
when included, should aid technicians in part
substitution.
If necessary, call the Parts department at
1-516-496-3400 ext. 6553 for assistance.
ASS'Y PCB- PX1275 MAIN AMP PCB
FUSE CLIP CQ-203SP FOR 5MM FUSE
DIODE BRIDGE KBPC602 200V 6A
IC TL071(TI)
IC TL072(JRC-NJM)
RELAY 24V DPDT TRIH-24VDC-SB-2CM
TR.2SB649A
TR.B817E/SANKEN A1492)
TR.D1047E/SANKEN C3856
TR.2SD669A
CNTR MALE L 2.5mm 2P EH A2502WR2
CNTR MALE L 2.5mm 3P EH A2502WR2
CNTR WAFER L 5.08mm 3P(5081-WR)
2P header
CNTR MALE 1P L 6.3 PIN(G20)
CAP ELE 50V 6800uF +-20% 22*51 105
COIL CHK 2uH +-10% L-R2U
RES MO 1W K 1K5 +-5% 15mm
RES MO 1W K 4R7 +-5% 15mm
RES MO 2W K 1K2 +-5% 15mm
RES MO 2W P 0.1 +-5%
RES MO 1/4W K 100 +-5%
RES MO 1/4W K 2K2 +-5%
RES MO 1/4W K 330 +-5%
RES MO 1/4W K 47 +-5%
RES MO 1/4W K 470 +-5%
RES MO 1/4W K 680 +-5%
VR SEMI ST S 6MMD 500B
FUSE 5*20mm T6.3A/250V UTE
THERMAL PROTECTOR 17AM024A5
WIRE ASY #28 2547 2P 200MM EH /G
WIRE ASY #24 2468 3P 100MM EH
WIRE ASY #28 2547 2P 150MM EH GRY
WIRE ASY #24 2468 6P 100MM EH
ASS'Y PCB-VAC1004A PX1275 I/O PCB
IC OP LF353N NS (DIP)
IC OPTOCOUPLER 4N25
CNTR SINGLE ROW L 3P
CAP MPP 100V 0.1u +-5%
CAP ELE 25V 10uF +-20% 4*7 105C
CAP ELE 50V 2.2uF +-20% 4*7 105C
JACK RCA S 2P 0860B-302-531
SW SLIDE 2P2T SS001-P022BQb-PA6
SW SLIDE 2P3T SS016-P223MA-PB6
SW SLIDE 4P4T SS001-P244Ojb-PA6
VR ROT 10KA RD0971110046-11-15KQ
Mini T BLOCK HD515V-2P BLK
Mini T BLOCK HD515H-2P BLK
CNTR MALE L 2.5mm 2P EH A2502WR2
CNTR MALE L 2.5mm 2P EH RED
CNTR MALE L 2.5mm 3P EH A2502WR2
CNTR MALE L 2.5mm 6P EH A2502WR2
CNTR MALE S 2.5mm 6P EH A2502WV2-6
Bare I/O PCB FR4 180*87*1.6MM PX-1275
CAP MPP 100V 0.1u +-5% TAP
CAP PPNM 100V 330P +-5% TAP
DIODE Sw/ 1N4148 TAPING 52MM
DIODE RECTI 1N4004 TAPING 52MM
COIL FER FB3560ST-650
RES CF 1/8W Y 1K +-5%
RES CF 1/8W Y 1.2K +-5%
RES CF 1/8W Y 2K2 +-5%
RES CF 1/8W Y 22K +-5%
RES CF 1/8W Y 47K +-5%
WIRE TINNER COPPER #22 5MM
WIRE TINNER COPPER #22 10MM
ASS'Y PCB-VAC1004B PX1275 I/O PCB
IC OP LF353N NS (DIP)
IC OPTOCOUPLER 4N25
CNTR SINGLE ROW L 3P
CAP MPP 100V 0.1u +-5%
CAP ELE 25V 10uF +-20% 4*7 105C
CAP ELE 50V 2.2uF +-20% 4*7 105C
JACK RCA S 2P 0860B-302-531 Red/White
SW SLIDE 2P2T SS001-P022BQb-PA6
SW SLIDE 2P3T SS016-P223MA-PB6
SW SLIDE 4P4T SS001-P244Ojb-PA6
VR ROT 10KA RD0971110046-11-15KQ
Mini T BLOCK HD515V-2P BLK
Mini T BLOCK HD515H-2P BLK
CNTR MALE L 2.5mm 2P EH A2502WR2
CNTR MALE L 2.5mm 2P EH RED
CNTR MALE S 2.5mm 2P EH A2502WV2
CNTR MALE L 2.5mm 3P EH A2502WR2
CNTR MALE S 2.5mm 3P EH A2502WV2
CNTR MALE L 2.5mm 6P EH A2502WR2
TUBING S1 1mmD 10mm
ASS'Y PCB-VAC1004 I/O PCB AUTO INS
Bare I/O PCB FR4 180*87*1.6MM PX-1275
CAP MPP 100V 0.1u +-5% TAP
CAP PPNM 100V 330P +-5% TAP
DIODE Sw/ 1N4148 TAPING 52MM
DIODE RECTI 1N4004 TAPING 52MM
COIL FER FB3560ST-650
RES CF 1/8W Y 1K +-5%
RES CF 1/8W Y 1.2K +-5%
RES CF 1/8W Y 2K2 +-5%
RES CF 1/8W Y 22K +-5%
RES CF 1/8W Y 47K +-5%
WIRE TINNER COPPER #22 5MM
WIRE TINNER COPPER #22 10MM
AC PCB FR4 181.2*63.3*1.6MM PX-127
DIODE RECTI 1N4004 TAPING 52MM
DIODE Sw/ 1N4148 TAPING 52MM
DIODE ZENER UZ-4.3BM 1/2W 4.1V-4.5
TR BF422 TAPING
CAP ELE 50V 47uF +-20% 105C 6.3*11
X-CAP HQX 0.0047uF/275V P=10MM
CAP Y-SUPPRESSOR 400V 4700pF +-20%
RES CF 1/4W Y 10K +-5%
RES CF 1/4W Y 22K +-5%
RES MO 2W K 1K2 +-5% 20mm
RES MO 2W K 1K5 +-5% 20mm
COIL CM-MODE 0.75mH E-7243H RING C
FUSE CLIP CQ-203SP FOR 5MM FUSE
FUSE 5*20mm T4A/250V UTE
CNTR WAFER L 5.08mm 2P(5081-WR)
CNTR WAFER L 5.08mm 3P(5081-WR)
CNTR WAFER S 5.08mm 2P(5081-WR)
WIRE ASY 2P #24 2468 350MM EH
WIRE ASY 2P #24 2468 400MM EH
SW PW PUSH TV-8 8212 CHILY
NTC THERMIXTOR LM0615050
RELAY 24V SPDT TRIH-24VDC-SB-1CE
ASS'Y PCB-VAC1007 PX1275 FAN PCB
FAN PCB CEM-1 44*84*1.6MM PX-1275
TR BC337-40
TR BC556B TAPING
DIODE ZENER UZ-12BM 12V
DIODE RECTI 1N4004 TAPING 52MM
RES MO 2W P 100 +-5%
RES MO 2W P 47 +-5%
RES CF 1/8W Y 22K +-5%
RES CF 1/8W Y 5.6K +-5%
CAP ELE 25V 100U +-20% 8*7 105C
THERMALSTAR U-A HT1+FB5 NO 65C
CNTR MALE S 2.5mm 2P EH A2502WV2
CNTR MALE S 2.54MM 2P(XH)
WIRE ASY 2P #24 300MM RED/BLK
WIRE ASSY 1P #22 100MM W/T250 RED
WIRE ASSY 1P #22 100MM W/T250 BLK
MECH PARTS COMMON VAC014-01
front panel, 482 mm, for model 1275
Plastic housing Molex mini-fit, 24-pin connector
Molex mini-fit plug, 24-pin
transformer, tto-10051-03(24.4v-0-24.4v/4.8A)x3, 1275
Main chassis, 5/1500, 1250R/S, 1275
Rear panel, model 1275
top cover, 5/1500,1250R,1250S
front sub-panel 5/1500,1250R/S
HANDLE PX1275 L-15004.BL
BKT FOR SINK PX1275 3018-0086
BKT FOR PW SW 3018-0088 PX1275
BKT FOR AC BOARD PX1275 4TTU-13
BKT FOR XMER PX1275 3018-0020
BOSS M3*12
AC SOCKET 2AC-008A0810
SCREW MACHINE 3*6 FLAT BLK
SCREW TRIANGLE 3*6 BIND BLK
SCREW MACHINE 3*6 PAN BLK
SCREW TRIANGLE 3*12 BIND BLK
SCREW TAPING 3*6 BIND BLK
SCREW TAPING 3*8 N BLK
SCREW MACHINE 4*6 BIND BLK
SCREW MACHINE 4*10 S FLAT BLK
SCREW TRIANGLE 4*8 BIND BLK C
SCREW TRIANGLE 4*12 BIND BLK C
NUT M3 NI + GEAR WASHER
NUT M4 BLK F/NUT
WIRE ASY W/42475 MOLEX *12 WIRE
WIRE ASY 2P #18 1015 150MM 508
WIRE ASY 2P #18 1015 150mm 508
WIRE ASY 2P #18 1015 360mm 508-10m
WIRE 1P #16 100MM GRN/YEL W/TML
X-CAP 14104 0.1uF/275V
TUBING SHRINK BLK 7MMD 20MM
TUBING S1 1mmD 5mm
CABLE TIE BINDING (YJ-80)
FOOT 4TSA-18A 50F*18H FOR PX1275
KNOB 4TNJ-10 FA-1500 FOR PX1275 PW
KNOB 10*10 FOR LEVEL
Molex 15-06-0245 Plug plus Wiring
SCREW P6-32*8
NUT 3m/m NI
GASKET 30*40*12MM
DC24V FAN JF1225B1M-257
RUBBER FOOT NF-008
SCREW MACHINE 3*40
SCREW P6#32*6 BIND BLK
BOSS STEEL #6-32 10MM
SCREW TAPPING 3*10 BAND BLK
WIRE ASY 2P #24 300MM FOR FAN TO C
SCREW MACHINE 5*6 PAN BLK
CABLE TIE BINDING (YJ-185)
Glass tube blk 10*70mm
PACKAGE VAC014-01
PW CORD AL201+501 SJT 16/3C 105 6F
CARTON OUTER FOR PX1275
CARTON INNER FOR PX1275
EPE BUFFER FOR PX1275
POLY BAG 30"*35"*0.08
POLY BAG 4x12"x0.08mm
MANUAL FOR PX1275 QUICK START
M362 README FOR PX1275
US CUSTOM INSTALL FOR PX1275
SAFETY PRECAUTION FOR PX1275
WARRANTY CARD FOR AUDIO ACCESS
POLY BAG 10x14"*0.05mm
6EA
4EA
32EA
6EA
3EA
10EA
13EA
4EA
12EA
4EA
1EA
1EA
1EA
1EA
1EA
1EA
3EA
2PCS
30EA
4EA
1EA
12EA
1EA
1EA
1pcs
1EA
2EA
8EA
8EA
6EA
6EA
4EA
2EA
4EA
1EA
6EA
1KIT
1EA
1EA
1EA
2EA
1EA
2EA
1EA
1EA
1EA
1EA
1EA
0.1Kg
PW SW*4,FPNL *2
FOOT*4
BKT-SINK BKT
RCA JACK
R-PNL-BOT*3
COVER
F-CH*9,R-PNL *4
XMER
FOOT*4,FAN*8
XMER
CN14
CN211A-CN211 B
CN212A-CN212 B
AC-CN213A
EARTH
C201
AC JACK
C201