INSTRUCTION MANUAL PA & TALK BACK AMPLIFIER POWER ON TALK BACK OFF PA PAT-20TB AUX VOLUME Min Max TONE Low Hi VOLUME Min Max MIC Mic input 3mv/5k PAT-20TB MOBILE PUBLIC ADDRESS AMPLIFIER WITH TALK BACK SYSTEM SPECO TECHNOLOGIES PROFESSIONAL SERIES
CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK. DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. WARNING To prevent fire or shock hazard, do not expose the unit to rain or moisture. This symbol is intended to alert the user to the presence of uninsulated "dangerousvoltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
Your mobile P.A. AMPLIFIER has been designed using the latest electronic technology available. This technology allows you to control the P.A. volume separately for Microphone or Auxiliary inputs. Your unit also comes with a tone control that allows you to adjust the frequency response. CAUTION : Before installation/operation read your manual completely.
Installation 1. Select a suitable mounting Location : A. Close enough to a 12 volt DC power source. B. Do not expose to extreme temperatures or moisture. Then install the system using the brackets, screws and washers provided as shown in figure #1. Temporarily mount the brackets to the unit. Use the unit with brackets mounted as a template to mark the holes that are to be drilled. CAUTION : When drilling hole, be sure that you are not interfering with any electrical wiring.
1. POWER ON/OFF SWITCH 2. POWER INDICATOR LED 3. TALK BACK & P.A. CONTROL SWITCH Talk back / P.A. control switch 4. AUX VOLUME CONTROL/CD VOLUME CONTROL Turn clockwise to increase volume level. 5. TONE CONTROL Bass tones emphasized when turned counter-clockwise, and treble tones emphasized when turned clockwise. 6. MIC VOLUME CONTROL Turn clockwise to increase volume level. 7. MIC INPUT PL55 JACK 8. AUX INPUT RCA JACK 9. CIGARETTE LIGHTER ADAPTOR CABLE 10. SPEAKER OUTPUT 11.
ELECTRICAL AND SPEAKER WIRING TO SPEAKER (4-8ohms) MIC Cigarette Lighter Adaptor Figure #3 4
R11 4.7K 5 + 6 - R13 1K 7 U11/B 4558 R12 27K 1 C12 821C U11/A 4558 C13 10/50 3 + 2 - R17 120K C17 821C C21 10/50 C14 1/50 R14 27K R19 2.2K C19 1/50 R26 12K Q11 C3198 R28 12K C22 220/16 D11 1N4148 C23 10/50 R27 270 R30 4.7K Q12 C3198 C2 10/50 D2 R3 1N4148 4.7K D3 1N4148 Q1 C3198 R2 4.7K R29 4.7K C1 1000/16 Q15 C3198 R31 12K SW11 TALK.BACK C25 393M R32 4.7K C:\...\C SI\P R52 120K C51 1/50 C53 10/50 C52 1/50 AT- 20TB.sch No.
FOR ASSISTANCE OR REPAIR SERVICE CONTACT 200 NEW HIGHWAY P.O. BOX 726 AMITYVILLE, N.Y.
