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Amplifiers & Preamplifiers
PA640
© 1996 Xantech Corporation. All rights reserved. Design and specifications subject to change without notice.
CH1
Input
CH2
Input
STEREO
BRIDGED
+
+
+
+
INVERTER
+
–
–
+
Feedback
DISCRETE DRIVER & OUTPUT STAGES
+
Feedback
Protection
Mute
and
Protection
PROTECTION
LED
CH2
CH1
BRIDGED
Power Mute
120V AC
60 Hz
Fuse
5A 220V AC
Power
Supply
PWM
REMOTE
ON/OFF
MANUAL OFF
(Remote ON/OFF)
MANUAL
ON
POWER ON/OFF LED
Opto-
Isolator
+
–
+
INPUT
LEVEL
Fig. 10 Block Diagram (Channels 1 and 2 only)
SPECIFICATIONS
Number of Channels ..................................................................................................................................................... 6
Power Output ....
Rated Continuous Power, Each Channel: ............................................. 8 Ohms .......................... 40 Watts
All 6 channels simultaneously driven,
20 Hz to 20 kHz, at rated THD.
Short Term Continuous, Each Channel: ....................... 8 Ohms ................................................... > 50 Watts
(2 channels driven, 1 kHz, at rated THD) 4 Ohms ................................................... > 70 Watts
Bridged Power Output: ................................................. 8 Ohms ................................................. > 140 Watts
(Short Term Continuous, one pair driven @ 1 kHz, at rated THD)
Rated THD ........................................................................................................................................................ < 0.08 %
Damping Factor (@ 50 Hz, 1/2 rated power) ...................................................................................................... > 100
S/N Ratio, A Weighted (ref. to rated power) ................................................................................................... > 100 dB
Frequency Response (@ 1 Watt, ± 3 dB) ..............................................................................................8 Hz to 100 kHz
Input Sensitivity ....................................................................... Input Gain Position
Max. ................................................................. 0.2 V
Mid. .................................................................. 1.0 V
Min. .................................................................. 3.3 V
Input Impedance ............................................................................................................................................. 50 kOhms
Power Supply .........................................................................................................................................120 VAC, 60 Hz
Power Consumption .................................................................. No Signal ....................................... 35 Watts (0.29 A)
6 chan @ 1/10 rated power .......... 265 Watts (2.2 A)
6 chan @ rated power ................... 640 Watts (5.3 A)
3 chan Bridged @ 14 watts/chan ... 440 Watts (3.7 A)
Remote ON/OFF Voltage ...................................................................................................................... +4V to +30V DC
Line Fuse Rating ..........................................................................................................................................5A 220V AC
Dimensions ......................................................................................................................... 13.5" L x 12.25" W x 3.6" H
Weight ............................................................................................................................................................... 14.3 lbs
3-24-99
PA640