INSTRUCTION MANUAL
POWER
ON
OFF
PAT-20TB
TALK
BACK
AUX VOLUME
PA
Min Max
PA & TALK BACK AMPLIFIER
TONE
Low Hi
VOLUME
Min Max
PAT-20TB MOBILE PUBLIC
ADDRESS AMPLIFIER
WITH TALK BACK SYSTEM
SPECO TECHNOLOGIES
PROFESSIONAL SERIES
MIC
Mic input
3mv/5k
ATTENTION INSTAL L ER
BEFORE INSTALLI NG TH I S EQU I PMENT,PLEASE REA D THE
INSTRUCTION MANUAL TH OROUGHLY. IF YOU ARE NOT
TOTALLY FAMILIAR WITH THE INSTALLATION OF THIS TYPE
OF APPARATUS, PLEASE SEC URE THE ASSISTA NC E OF A
QUALIFIED TECHNICIAN. IF THE UNIT IS NOT CONNECTED
PROP ERLY, DA MAGE MAY RESU LT AND YOU R WARRANTY
MAYBEVOIDED.
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 f ir e or s ho ck h az ar d, 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.
This symbol is intended to alert the user to the
presence of important operation and maintenance (servicing) instructions in the literature
Caution: To prevent electric shock do not use this (polarized)
Attentions: Pour pr venir les chocs lectriques ne pas utiliser
accompanying the appliance.
plug with an extension cord, receptacle or other
outlet unless the blades can be fully inserted to
prevent blade exposure.
**
cette fiche polaris e avec un prolongateur, une
prise de courant on une autre sortie de courant,
sauf si les lames peuvent tre ins r ss fond
sans en laisser aucune partie d couvert.
*
***&
&*
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.
SPECIFICATIONS
POWER OUTPUT : 20 WATTS RMS (EXT)
TALK BACK POWER OUTPUT : 4 WATTS RMS (INSIDE SPEAKER)
OUTPUT IMPEDANCE : 4 or 8 OHMS
TOTAL HARMONIC DISTORTION : Less than 1% at 10 Watts output
FREQUENCY RESPONSE : 50Hz - 20KHz Within -3dB
TONE CONTROL : 0-12dB ADJUSTABLE AT 10 KHz
AUX INPUT SENSITIVITY : 200mV/10K ohms
MIC INPUT SENSITIVITY : 2.5mV/5K ohms
SIGNAL TO NOISE R ATIO : More than 70d B
POWER SOURCE : 11V TO 16V DC NEG GND
FUSE : 3 A
DIMENSION : 5 1/8"(W) X 1 1/4"(H) X 4 1/2"(D)
WEIGHT : 2 lbs.
1
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 drilli ng hole, be sure that you ar e not interfering
with any electrical wiring.
After mar king location of drilli ng, carefully dr ill small, shallow holes. Then secur e
amplifier's brackets to mounting location. After the brackets are secure, mount
amplifier into brackets. Refer to Figure #1.
2. Mount the MIC. Bracket refering to figure #2.
Figur e # 2
Figur e # 1
2
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 VOL UME 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. TALK BACK SPEAKER (INSIDE TOP COVER)
3
TO SPEAKER
(4-8ohms)
Cigarette Ligh ter
Adap tor
Figur e # 3
MIC
ELECTRICAL AND SPEAKER WIRING
4
POWER.LED
1000/16
Title
Size No. Rev.
File Date Time of
.title~
A4 PAT-20TB SCHEMATIC .rev.
C:\...\C SI\P AT- 20TB.sch 2005/07/06 17:50 1 1
speco technologies
note1
note2
note3
note4
note5
GND LINE
B+ LINE
BATTERY POWER +12V
POWER.SWITCH
SW1
D1
1N4005
AUX.VR.
CH1
6.8K
R1
2.2K
LD1
C1
RY2
220/10
1/1W
C61
R59
SP51
OUTPUT -
6.8K
VR12;10K
R22
AUX INPUT
JK2
R23
Q14
C3198
100/10
C24
C20 104C
OUTPUT +
R20
12K
270
C3198
R33
C18
1/50
VR11;10K
MIC.VR.
Q15
4.7K
T11
R32
MIC INPUT
JK1
C11
1/50
C15
821C
C16
1/50
R18
390
821C
120K
C17
R17
R21
6.8K
C3198
Q1
10/50
C2
MI C.SW
TONE.VR
VR13;10K
120K
R34
1/50
6
4
C56
47/10
R56
10
R55
10
C60
104M
1
2
1
1/50
RY1
R2
4.7K
1N4148
D3
C52
2.2K
R58
+3-
C19
R54
4558
D2
1N4148
4.7K
R3
393M
5
8
4.7K
U11/A
C25
100/10
R16
10/50
2.2K
10/50
C58
C13
R19
C53
7
R13
1K
10/50
4.7K
821C
3
TDA2005
47/10
104M
C59
821C
C23
R30
12K
C26
U51
C55
C12
R31
R11
4.7K
6
+5-
U11/B
4558
R12
27K
7
C21
10/50
C14
1/50
R14
27K
PAT-20TB SCHEMATIC DIAGRAM
R25
12K
Q11
C3198
12K
R28
1N4148
Q12
C3198
4.7K
R51
2.2K
1/50
C51
1
2
10
R53
1K
R57
1
220/16
D11
R29
SW11
TALK.BACK
220/16
C54
R52
120K
11
C57
100/10
R26
12K
C22
R27
270
9
FOR A SSISTANCE OR REPA IR SERVIC E CONTACT
200 NEW HIGHWAY P.O. BOX 726
AMITYVILLE, N.Y. 11701 - 0726
631- 957- 8700 1- 800- 645- 5516
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