Speco PMM-120A Instruction Manual
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Speco PMM-120A Instruction Manual

Public address amplifier
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PUBLIC ADDRESS
AMPLIFIER
PMM-60A
PMM-120A
RISK OF ELECTRIC
SHOCK, DO NOT OPEN!
CAUTION: TO REDUCE THE RISK
OF ELECTRIC SHOCK, DO NOT
OPEN COVER. NO USER
SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
PRECAUTIONS
1.Unpacking
After removing the amplifier from the carton, inspect for any exterior damage to
the unit. If damage is noted, notify the carrier at once so that a claim can be
justified. Save all packing material. This is important when the claim is
processed.
2.Ventilation
To offset heat generated by the unit, it is necessary to provide ample ventilation
around the unit. Avoid blocking or impeding the ventilation holes on the unit. To
prevent unnecessary problems, install the unit in a place free from any
vibrations, direct sunlight, humidity or dust circulation.
3.Avoid spilling liquids or allowing materials to enter the cabinet
If the unit gets wet or any foreign material enters the cabinet, immediately
disconnect the A.C. line cord and consult your dealer or qualified technician.
INSTRUCTION
MANUAL
60 WATT RMS
120 WATT RMS
WARNING: TO PREVENT FIRE
OR SHOCK HAZARD, DO NOT
EXPOSE UNITS NOT
SPECIFICALLY DESIGNED FOR
OUTDOOR USE TO RAIN OR
MOISTURE.
WARNING: REMOVAL OF THE
COVER SHOULD ONLY BE PER-
FORMED BY QUALIFIED SERVICE
PERSONNEL - NOT USER SER-
VICEABLE. THE UNIT SHOULD
ALWAYS BE UNPLUGGED BEFORE
REMOVING THE COVER, AND
REMAIN UNPLUGGED WHILE THE
COVER IS REMOVED.
200 NEW HIGHWAY, AMITYVILLE, NY11701
PHONE : 1-800-645-5516, 631-957-8700 IN METRO NY
http://www.specotech.com

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Summary of Contents for Speco PMM-120A

  • Page 1 PUBLIC ADDRESS AMPLIFIER PMM-60A PMM-120A RISK OF ELECTRIC SHOCK, DO NOT OPEN! CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT OPEN COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. PRECAUTIONS 1.Unpacking After removing the amplifier from the carton, inspect for any exterior damage to the unit.

  • Page 2: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with dry cloth. 7. Do not block any ventilation openings. Install in accordance with the manufacturer’ s instructions.

  • Page 3: Front Panel

    Controls and Connections FRONT PANEL REAR PANEL FRONT PANEL 1) MIC-1 Volume control 2) MIC-2 Volume control 3) MIC-3 Volume control 4) MIC-4/AUX-1 Volume control 5) MIC-5/AUX-2 Volume control 6) MIC-6/AUX-3 Volume control REAR PANEL 1) AC power cord 2) Ground 3) Speaker outputs 4) Manual muting terminals 5) MIC-6 input terminals (Balanced)
  • Page 4 9) Master Volume control. Controls all volume levels simultaneously. 10) Power on/off switch with LED indicator. Illuminates when power is on. 11) Output level indicator. Indicates power output. Do not overload amp. REAR PANEL 1) AC power cord. AC power cord with three pin plug for a 120VAC 50/60 Hz, power source.
  • Page 5 “booster” or power amplifier. This signal is after tone control and master volume control. In this fashion, very large systems requiring more than 120 watts can be accommodated with an additional booster amp. 21) AUX-3 input RCA jacks High impedance input available with parallel RCA jacks (for combining stereo output accessories).

  • Page 6: Speaker Connection

    29) MIC-3 (XLR connector) input. Accepts a balanced low impedance microphone signal with an XLR connector. 30) MIC-2 (XLR connector) input. Accepts a balanced low impedance microphone signal with an XLR connector. 31) MIC-1 (XLR connector) input. Accepts a balanced low impedance microphone signal with an XLR connector.

  • Page 7: Speaker Impedances

    25V and 70V CONSTANT LINE VOLTAGE CONNECTIONS (refer to figure 4). IMPORTANT NOTICE: When the 25V and 70V constant line voltages are used, a line HOW TO CONNECT LINE MATCHING TRANSFORMERS IN PARALLEL ALWAYS CONNECT LINE TRANSFORMERS IN PARALLEL NEVER CONNECT LINE TRANSFORMERS IN SERIES 25V Transf.
  • Page 8 CABLE REQUIREMENTS Output cabling need not be shielded in most cases and should be of sufficient gauge to minimize losses due to the resistance of the wire over long runs (insertion loss). Cable thinner than 18 gauge is not recommended. Long runs require 16 gauge or heavier. In some cases, where the output cable is run in close proximity to unshielded intercom cables, electrical cables, radio transmission antennas or other sources of interference or when the amplifier is being used for paging from a telephone system, the amplifier may require shielded...
  • Page 9 If Sum Wattage Total is between 217 and 240 Watts If Sum Wattage Total is between 241 and 288 Watts * RMS Amplifier used in conjuction with Speco Technologies’ P-240A Power Booster Amp Speco Technologies 200 New Highway, Amityville, NY 11701 Web: www.specotech.com...

  • Page 10: Specifications

    (Use # PBM – RK2 rack mount bracket) *MOH = Music on hold SPECIFICATIONS Public Address Mixer Power Amplifier PMM-60A **Factory set : -40dB PMM-120A AC 120V, 50/60Hz 120W RMS 50~15 KHz ±3dB 1% or less at 1KHz at rated output TEL :100mV/600 Ohm, Balanced MIC-1~6 : 1.0mV/600 Ohm, Balanced...
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Pmm-60a

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