A-60/120 Public Address Amplifier A-60 PUBLIC ADDRESS AMPLIFIER +3 0 -3 -7 -10 PROT MIC 1 MIN MIC 3 MIC 2 MAX MIN MAX MIN AUX 1 MAX MIN BASS AUX 2 MAX MIN MAX -12dB TREBLE +12dB -12dB +12dB MASTER MIN MAX -14 POWER ON OFF
Contents Welcome Warning.........................................................................................................................................1 Unpacking ......................................................................................................................................2 Installation Environment....................................................................................................................................2 Important Safety Instructions...............
PUBLIC ADDRESS AMPLIFIER Welcome A personal welcome to you from the management and employees of Inter-M All of the co-workers here at Inter-M are dedicated to providing excellent products with inherently good value, and we are delighted you have purchased one of our products. We sincerely trust this product will provide years of satisfactory service, but if anything is not to your complete satisfaction, we will endeavor to make things right.
PUBLIC ADDRESS AMPLIFIER Unpacking Although your A-60/120 is neither complicated nor difficult to operate, we recommend you take a few minutes to read this brief manual and familiarize yourself with the important information regarding product features, setup and operation. As with most electronic devices, we strongly recommend you retain the original packaging. In the unlikely event the product must be returned for servicing, the original packaging (or reasonable equivalent) is required.
PUBLIC ADDRESS AMPLIFIER Features - HIGH POWER, LOW DISTORTION 60W (A-60) or 120W (A-120) of RMS power, with less than 1% THD. - VERSATILE AND EASY TO USE Three Mic inputs, two Aux Inputs. - PRIORITY MUTING Mic1 input mutes other inputs when in use. - FLEXIBLE DESIGN Mono 4Ω or 70V/100V High-Impedance Outputs. - TONE CONTROL Separate Bass and Treble controls to tailor your sound. Accessories One detachable AC power cord is provided for use with this product.
PUBLIC ADDRESS AMPLIFIER Front Panel 1 2 3 A-60 PUBLIC ADDRESS AMPLIFIER +3 0 -3 -7 -10 PROT -14 MIC 1 MIN MIC 2 MIN MAX 4 AUX 1 MIC 3 MAX MIN MAX MIN BASS AUX 2 MAX MIN MAX -12dB TREBLE +12dB -12dB +12dB POWER MASTER MIN ON MAX 5 6 OFF 7 1. BASS AND TREBLE CONTROLS These knobs provide continuous control of the high and low frequency response, by adding up to 12dB of cut (decrease) or boost (increase). 2.
PUBLIC ADDRESS AMPLIFIER Rear Panel 1 2 MODEL NO. A-60 OC03 PUBLIC ADDRESS AMPLIFIER ~ AC INPUT 230V 50Hz, 75 W MIC 3 MADE IN KOREA CAUTION; TO REDUCE THE RISK OF ELECTRIC SHOCK , 4 COM 0 021 www.inter-m.com SN 70V(83 ) 100V(165 ) DO N OT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO Q UALIFIED SERVICE PERSONNEL. AVIS; RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR.
PUBLIC ADDRESS AMPLIFIER Connecting Speakers Before connecting speakers to your A-60/120 unit, be sure to disconnect the AC power cable. Make certain that the total impedance is not less than the rated impedance indicated. For 4Ω low-impedance speakers, connect in parallel, with the positive (+) connectors to the 4Ω terminal and the negative (-) connectors to the COM terminal. See Figure below.
PUBLIC ADDRESS AMPLIFIER Applications MIC CASSETTE DECK MIC CD PLAYER MIC MODEL NO. A-60 OC03 PUBLIC ADDRESS AMPLIFIER ~ AC INPUT 230V 50Hz, 75 W MIC 3 MADE IN KOREA CAUTION; TO REDUCE THE RISK OF ELECTRIC SHOCK , 4 COM 0 021 www.inter-m.com SN 70V(83 ) 100V(165 ) DO N OT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO Q UALIFIED SERVICE PERSONNEL. AVIS; RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR.
PUBLIC ADDRESS AMPLIFIER Block Diagram 8 A-60/120
PUBLIC ADDRESS AMPLIFIER Specifications ..............................................................0dB=0.775Vrms - ELECTRICAL Rated Output/Impedance.........................................................A-60: 15.5V/4Ω, 70V/81.6Ω, 100V/166.7Ω ..............................................................................................A-120: 21.9V/4Ω, 70V/40.8Ω, 100V/83.3Ω Frequency Response (±3dB).......................................................................................................
PUBLIC ADDRESS AMPLIFIER Service Procedures Ensure the problem is not related to operator error, or system devices that are external to this unit. Information provided in the troubleshooting portion of this manual may help with this process. Once it is certain that the problem is related to the product contact your warranty provider as described in the warranty section of this manual. Schematic A Schematic is available by contacting your warranty provider.
NOTE
NOTE
Inter-M, Ltd. (Korea) began operations in 1983. Since then, Inter-M has grown to become one of the largest manufacturers of professional audio and commercial sound electronics equipment in the world. Inter-M has gained worldwide recognition for its own branded products, as well as private label manufacturing of electronics sold under other names (OEM).
