GAI-Tronics PMA-300 Manual - Page 13

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1. Product Overview

Model PMA-300 300 Watt Central Amplifier

Specifications

Electrical:

Supply Voltage: ................................................208 V ac +10%,-0%, (208 V ac, 60 Hz nominal), 50/60 Hz

Power consumed (@ nominal V in):

Idle / Rated Output ...............................................................................30 VA.; 20 W / 790 VA; 530 W

Output Power:..............................................300 W

..............................................................De-rate to ~10 W

Output Peak Power: ................................................................................................... 430 W

Output Voltage: ...................................................................................................... 70.7V

THD @ rated output & nominal Vin: .................................................................................1.5 % maximum

Frequency Response: (At rated output)................................................................. 50 Hz-17.5 kHz +0/-3dB

Hum/Noise below rated output: .........................................................................................-70 dB minimum

Input Sensitivity for rated output: .............................................................. ~775 mV

Input Impedance ............................ (Balanced - Between Pin 2 {Hi} & Pin 3 {Low}) 15 K ohm (nominal)

Phase linearity: ......................................................................................................... +/-35º (100-10000 Hz)

Damping factor:.................................................................................................>10 @ 1 kHz >3 @ 19 kHz

Start-up Delay Time: .................................................................................................... 2 seconds (nominal)

Internal Thermal Protection {mounted to heatsink}:.................................................. 75ºC (167ºF) nominal

Temperature range: Operating: ..................................................................... 0 to +50ºC (+32ºF to +122ºF)

Storage:..................................................................... -10 to +60ºC (+14ºF to +140ºF)

Humidity: ................................................................................................. Non-condensing, 85% maximum

General:

External Controls

Front:..................................................................................................................AC Main POWER Switch

Rear: .............................................................................................................................................................

Front Panel LED indicators: ........... Power ON; DC in; OHEAT; internal main dc bus FUSE failure (F1);

AC Primary fuse: (accessible externally from inside of rear panel's IEC power connection)

Model PMA-300 (208 V ac):..................................................... T6.3A, Time-lag Slo Blo (5 x 20 mm)

Internal Fuses:

Low Voltage Power Supply:..................................................... F3 T1A, Time-lag Slo Blo (5 x 20 mm)

Audio Output Stage:............................................................... F1 T16A, Time-lag Slo Blo (5 x 20 mm)

External Connections (Rear):

AC in:............................................................................................................ IEC 320 (male) connector

Audio In: ......................................................................Dual (feed-thru) 3-pin XLR (female) connector

Audio Out: ................................Two SPEAKON™ (70.7 V ac and 100 V ac) by Neutrik® connectors

Monitor bus: (Reserved for special applications) ............. Dual gold-plated RCA™-style (female) jack

I/O port: (Reserved for special applications) ............................................D sub 9-pin (male) connector

Enclosure:............................................................................................................ 16 gauge cold-rolled steel

Finish: Front: ......................................................................................................................................Black

Rear: .......................................................................................................................................Black

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12/00

RMS

output OLOAD; output PEAK; ALARM; watt output (dB scale) seven segment

continuous @ T

= 24ºC with adequate ventilation.

continuous @ T

= 50ºC @ nominal V ac in

RMS

12 of 13

Page

Pub.: 42004-667L2A

(t=100 mS)

RMS

ac; 100V

RMS

(Balanced Z Input)

RMS

LED bar graph.