Ab international 4300 a brochure

Page 1

l

MODEL 4300A

F0 UR CHANNEL
AMPLIFIER

°-f©E-°w~'.e v 0
9 "

PROFESSIONA L
SERIES 4300A

The AB International Professional Series Model
4300A is a four channel full featured Amplifier.
This compact instrument (three rack unit) is
equipped with two individual power supplies,
four independent balanced and unbalanced inputs,
detented level controls, signal present and " Soft
Clip" indication, convection cooled with tem-
perature activated fan assist, Stereo/Bridge
switches. The 4300A delivers 200 Watts into 8
Ohms, 300 Watts into 4 Ohms and 500 Watts into
2 Ohms all four channels driven from ZOHZ to
20kHz at .1% distortion.

Model 4300A incorporates a three year Five Star
protection plan featuring the following unprec-
edented circuitry. VI energy limiters are incorpo-
rated for short circuit protection. If an extreme
low impedance exist, a current sensing circuit will
reduce the output to prevent amplifier overdrive.

If an abnormal high AC line voltage is present or an
excessive voltage surge appears, the amplifier will
detect the situation and turn itself off. If an unlikely
DC situation occurs, DC sensing circuits will trigger
the amplifier channel and turn off. Thermal sensors
are installed in each channel to prevent an over
temperature condition. "Soft Clip" circuitry has
been incorporated for added protection to prevent
hard clipping from improper use.

Other features included are internal selectable input
sensitivity, ground lift switch and fully modular
design for service accessibility. 70V transformers are
available in a variety of options for distributed
systems.

The Model 4300A operates from 100/240V 50-
60Hz AC Mains and measures 5 1/4" high (three
rack unit), 19" wide and 13" deep.

Page 2

AB MODEL 4300A SPECIFICATIONS

is

=
«
a
u
x
U c
a

-...-.-t@7

62%

Type:

Continuous
Power Output
Per Channel
20Hz to 20Kflz:

Frequency
Response:
Distortion:

Hum & Noise:

Input Sensitivity:

Input Connectors:

Output Connect:

Controls &
Indicators:

Four channel amplifier

200w @ 8 Ohms

300w @ 4 Ohms

500w @ 2 Ohms

550w @ 8 Ohm Bridged
900w @ 4 Ohms Bridged

70v Operation (Call for specs.)

Plus/minus 0.25dB 20-20kHz

No more than 0.1% THD or
IM, 0.01 to rated output, 20Hz
to 20kHz (typically 0.01%)
101 dB below rated
output (unweighted, ZOkHz
bandwidth)

1.0V RMS for rated output
(selectable) .775V,1.0V,1.5V
1/4" phone jack (balanced)
XLR (balanced)

5-way binding posts

(Front panel) AC mains power
Breaker, power on LED, level
controls,signal/clip LED's,
(Rear panel) ground lift
switch, stereo/bridged
switches.

Damping Factor:

Slew Rate:

Crosstalk:
Gain:
Mainframe
Power

Supply:
Turn-On Delay:
Power
Requirements:
Thermal
Protection:

DC Protection:
Heatsink and
Cooling:

Construction:

Dimensions:

Weight:

500:1 at lkHz

Closed-loop response greater
than 40V per microsecond
~80dB

30.5dB

Toroidal transformer, 2
seperate power supplies
4EA (15k ut) capacitors

3 sec., solid-state actuated
AC Mains- 100-240VAC
50/60Hz@15A/7.5A
Thermal sensor activates
channel shutdown if an over-
heating condition exists

DC sensor activates channel
shutdown if DC condition
exists, Soft clip protection
Convection cooling utilizing
massive heatsink extrusions
with fan assist.

14-gauge cold-rolled steel with
3/16" heavy aluminum front
panel

Slimline 5 1/4" height, 19"
standard rack mount width,
13" depth overall

(less handles)

29 lbs. (13.18 kg)

AB INTERNATIONAL ELECTRONICS INC

PH: (916) 783-7800 e-mail: sales@abamps.com
1830-6 Vernon St., PO Box 1105, Roseville, CA 95678 FAX: (916)784-1050 http;www.abamps.com