OPERATING INSTRUCTIONS PA AMPLIFIER A-230 CE-GB Please follow the instructions in this manual to obtain the optimum results from this unit. We also recommend that you keep this manual handy for future reference.
TABLE OF CONTENTS 1. IMPORTANT SAFETY INSTRUCTIONS ..................................................... 3 2. SAFETY PRECAUTIONS.................................................................................. 3 3. GENERAL DESCRIPTION .............................................................................. 5 4. FEATURES ........................................................................................................... 5 5. NOMENCLATURE AND FUNCTIONS 5.1 Front .................................
1. IMPORTANT SAFETY INSTRUCTIONS • Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus. • Read these instructions. • Keep these instructions. • Heed all warnings. • Only use attachments/accessories specified by the manufacturer. • Follow all instructions. • Do not use this apparatus near water. • Clean only with dry cloth. • Do not block any ventilation openings.
• The terminals marked with the symbol are hazardous live. The external wiring to these terminals requires installation by an instructed person. • The apparatus shall be connected to a mains socket outlet with a protective earthing connection. When the Unit is in Use • Should the following irregularity be found during use, immediately switch off the power, disconnect the power supply plug from the AC outlet and contact your nearest TOA dealer.
3. GENERAL DESCRIPTION TOA's Basic Amplifier A-230 is a high cost-performance mixer power amplifier suited for paging announcement or background music in schools, offices, shops, factories, mosques, churches, and small rooms. 4. FEATURES • High durability, high reliability, and high cost performance. • Two microphone inputs, two AUX inputs. • Speaker output of constant voltage distribution system (100 V) and low impedance (4 Ω). • Muting function. • Independent input volume controls.
5. NOMENCLATURE AND FUNCTIONS 5.1. Front 3 4 1. Power switch Press to turn on the power. Press again to turn off the power. 2. Power Indicator Lights green when power is switched ON. 3. Microphone Volume Controls Adjust the microphone level. 4. AUX Volume Controls Adjust the AUX level. 5 6 7 2 1 5. Bass Control Adjusts bass response. Rotate counterclockwise to reduce it. The maximum position "0" provides flat characteristics. 6. Treble Control Adjusts treble response.
13. Muting Level Control Adjusts the background music level 0 – 30 dB to be automatically reduced when priority function is operated. 12. MIC 1 and MIC 2 Inputs • ( Mic 1 : 5-pin DIN Socket ) –60 dBV (1 mV), 600 Ω, unbalanced. Use a 5-pin DIN plug connector. (Refer to Input Connection for details.) 14. Ground Terminal Connects to ground (earth) to avoid electric shock. ( Mic 2 : Single Pole Phone Jack ) –60 dBV (1 mV), 600 Ω, unbalanced. (Refer to Input Connection for details.) • 0 dBV=1 V 6.
6.2. Output Connections Be sure to replace the supplied terminal cover after connection completion. Because high voltage is applied to the speaker terminals, never touch these terminals to avoid electric shock. CAUTION • Low Impedance Speaker • 100 V Line Speaker COM 4Ω 100V COM 4Ω 100V 4 − 8Ω Speaker 100 V Line Speaker CAUTION! • The 4 Ω and 100 V terminals cannot be used at the same time. • Impedance indicated above the terminal represents the total speaker (load) impedance.
7. MUTING FUNCTION Shorting DIN plugs pin-4 and pin-5 of rear-mounted Mic 1 input allows Mic 1 input to reduce the volume of Mic 2, Aux 1, and Aux 2 inputs by 0 to 30 dB. The attenuation level is preset for –30 dB at the factory. We recommend using TOA's microphone PM-222D or PM-660D to bring the best results. 5-pin DIN Connector E 3 1 Hot Cold Ground (Shield) 2 4 MUTE ADJ 5 0 –30dB Mute Switch Remark: About Mute function.
9. VOLUME CONTROL SETTINGS Output levels are adjustable with individual volume controls. For music play or announcement, adjust the corresponding volume control so that the signal output is not distorted. Note that the sound quality is downgraded when the output is distorted. 10.
. DIMENSIONAL DIAGRAM unit: mm [Rear] [Top] 11.96 205.1 23.2 [Side] 350 11.8 88.
. SPECIFICATIONS Model No. Power Source Rated Output Power Consumption (EN60065) Frequency Response Distortion MIC 1 MIC 2 Inputs AUX 1 AUX 2 Speaker Out Outputs 100 V 4Ω S/N Rasio Tone Controls Muting Indicators Finish Dimensions A-230 CE-GB 240 V AC 30 W 34 W 50 - 20000 Hz, ±3 dB Less than 1% at 1 kHz, 1/3 rated power –60 dBV (1.0 mV), 600 Ω, Unbalanced, 5-P DIN type –60 dBV (1.
