Toa A-503A User manual

THE TOA 500 SERIES
MIXER/POWER AMPLIFIERS are
ideal for a wide variety of
installed sound applications.
Engineered with proven TOA
quality and reliability, the 500
Series is simple to install and oper-
ate, saving you time and money.
The A-503A (30 W), A-506A (60 W),
and A-512A (120 W) Mixer/
Amplifiers each have six input
channels to accommodate a variety
of input sources and a built-in
power amplifier with transformer-
isolated 25 V, 70 V and 4 ohm
speaker outputs.
Pre-Out/Power-In jacks allow con-
nection of external signal processing
between the mixer and amplifier
sections. Other features include
booster and tape outputs for con-
necting an external mixer, amplifier
or recording device. A convenient
+24 VDC input allows operation in
remote applications.
The TOA 500 Series are UL and
cUL Listed and carry a five year
warranty.
 Integrated Six Channel Mixer/
Amplifiers for paging, music distribu-
tion and messaging-on-hold.
 Proven TOA Quality and Reliability
Engineered for High Performance with
wide frequency response, very low
noise and distortion, and excellent
output regulation.
Three Models:
A-503A (30 W), A-506A (60 W),
A-512A (120 W)
25 V, 70 V and 4 Ohm Transformer-
Isolated Speaker Outputs with screw
terminal connector and protective
cover plate.
Two Low Impedance Microphone
Inputs, balanced, transformer-isolated
with XLR-F connectors and switchable
phantom power.
Three Auxiliary Line Inputs, unbal-
anced with RCA connectors
Hi-Z Mic/Phono Input (switchable),
unbalanced with RCA/screw terminal
connectors
Optional Module converts Inputs 3 & 4
to low impedance microphone inputs
with XLR-F connectors.
External Mute Terminals for switch
closure override of Inputs 3-5 with
adjustable mute depth.
Individual Channel and Master Volume
Controls
Remote Mic Volume Terminals
(Input 2) for control with an external
10k ohm linear-taper potentiometer.
Bass/Treble Tone Controls
Insert Jacks for connecting external
signal processor.
Booster and Tape Outputs for connect-
ing external mixer, amplifier or record-
ing device.
+24 VDC Input for connection to exter-
nal power source.
Rear Panel AC Convenience Outlet for
powering external equipment.
Over-current and Thermal Protection
Circuitry prevents potential damage
from overload, short-circuit and over-
heating.
 Optional Rack-Mount Kit
UL / cUL Listed
Five Year Warranty
H IGHLIGHTS
O
PTIONAL A CCESSORIES
MB-21B2 Rack-mount Kit
PF-511 Perforated Rack Panel (2 RU)
U-51 Dual Lo-Z Mic Input Module
U-52 Unbalanced-to-Balanced Transformer (600:600 ohms)
500
S ERIES
M
IXER /
A
MPLIFIERS :
A-503A
A-506A
A-512A

500 S ERIES
M IXER /
A
MPLIFIERS
Literature Order #: L-500SERIES
Specifications subject to change without notice.
© 2003, TOA Electronics, Inc.
S PECIFICATIONS
A PPLICATIONS
A/V Rentals
Airports
Audio/Visual
Auditoriums / Theatres
Banks
Bars / Lounges / Nightclubs
Boardrooms
Business Music
Conference Facilities
Convenience Stores
Educational Facilities
Fitness Clubs / Gymnasiums
Hotels / Hospitality
Houses of Worship
Industrial / Warehouses
Museums
Music Distribution
Offices
Public Address
Restaurants
Retail Stores
Theme Parks
Training Rooms
Type 6-channel mixer/amplifier
Output Power A-503A: 30 W RMS; A-506A: 60 W RMS; A-512A: 120 W RMS
Frequency Response 50 - 15k Hz, ±3 dB
Total Harmonic 0.02% at 1k Hz, rated output
Distortion
Inputs INPUT 1: 200 Ω, 0.3 mV (MIC 1), 15 VDC phantom power
INPUT 2: 200 Ω, 0.3 mV (MIC 2), 15 VDC phantom power
INPUT 3: 50k Ω, 3 mV (MIC 3) / 50k Ω, 2 mV (MAG. PHONO)
INPUT 4: 50k Ω, 3 mV (MIC 4) / 220k Ω, 100 mV (AUX 1)
INPUT 5: 10k Ω, 100 mV (AUX 2)
AUX 3: 10k Ω, 100 mV
Power amp input: 10k Ω, 1 V
Outputs Speaker outputs: 4 Ω, 25 V & 70 V, balanced
Tape output: 4.7k Ω, 650 mV
Booster output and Pre-amp output: 600 Ω, 1 V
Output Regulation Less than 2 dB, no load to full load
(1k Hz)
Dynamic Range All volume controls c.c.w.: 80 dB below rated power
(Band Pass: 20 - 20k Hz, MIC 1, 2: 60 dB below rated power (200 Ωterminated)
with Tone Controls centered) AUX 2, 3: 70 dB below rated power
Mag. phono: 60 dB below rated power
Tone Controls Bass: ±10 dB at 100 Hz; Treble: ±10 dB at 10k Hz
Power Supply 120 VAC 60 Hz or 24 VDC
Power Consumption A-503A: 60 W; A-506A: 100 W; A-512A: 180 W
Current Consumption A-503A: AC: 220 mA / 0.9 A, DC: 220 mA / 2.1 A
(idling / rated power) A-506A: AC: 200 mA / 1.6 A, DC: 220 mA / 4.2 A
A-512A: AC: 250 mA / 2.8 A, DC: 300 mA / 7.5 A
Color Black
Dimensions (W x H x D) 16.5” x 3.5” x 11” (420 x 88.5 x 280 mm)
Weight (without modules) A-503A: 15.7 lbs (7.1 kg)
A-506A: 17.9 lbs (8.1 kg)
A-512A: 22.9 lbs (10.4 kg)
Other Features Muting function
Remote volume control (MIC 2)
TOA E LECTRONICS , I NC .
601 G ATEWAY B LVD ., S UITE 300
S OUTH S AN F RANCISCO , CA 94080
TEL: [phone]
FAX: [phone]
www.toaelectronics.com
Visit www.toaelectronics.com to download:
500 Series Architect and Engineering Specifications
500 Series Installation Manual
500 Series CAD Files