Episode EA-AMP-COMM-1A-120 User manual

OWNER’S MANUAL >>
EA-AMP-COMM-1A-120
COMMERCIAL
AMPLIFIER
100V/70V/50V/4Ω AMPLIFIER

2
IMPORTANT SAFETY INSTRUCTIONS
WARNING: To reduce the risk of re or electric shock, do not expose this apparatus in or near rain or moisture.
Read and follow all instructions and warnings in this manual. Keep for future reference.
1. Do not use this product near water.
2. Clean only with a dry cloth.
3. Do not block any ventilation openings. Install according to manufacturer’s instructions.
4. Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus
(including ampliers) that produce heat.
5. Do not override the safety feature of the polarized or grounding-type plug. If the provided plug does not
t into the existing outlet, consult an electrician for an outlet replacement.
6. Protect the power cord from being walked on or pinched particularly at plug, convenience receptacles,
and the point where it exits from the apparatus.
7. Only use attachments/accessories specied by the manufacturer.
8. Use only with a cart, stand, tripod, bracket or table specied by the manufacturer, or sold with the apparatus.
When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
9. Unplug this product during lightning storms or when unused for long periods of time.
10. Refer all servicing to qualied service personnel. Servicing is required when the apparatus
has been damaged in any way, such as when the power-supply cord or plug is damaged, liquid has
been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or
moisture, does not operate normally, or has been dropped.
11. Do not expose this equipment to humid areas or in areas exposed to the environment.
Ensure that no objects lled with liquids, such as vases, are placed on the equipment.
12. To completely disconnect this equipment from the AC mains, disconnect the power supply cord
plug fromthe AC receptacle. Do not disconnect from the wall by pulling on the cord. Only remove the
power cordfrom the wall by the plug end.
The lightning ash with arrowhead symbol, within an equilateral
triangle, is intended to alert the user to the presence of
uninsulated dangerous voltage within the product’s enclosure
that may be of sufcient magnitude to constitute a risk of
electric shock to persons.
The exclamation point within an equilateral triangle is intended
to alert the user to the presence of important operating
and maintenance (servicing) instructions in the literature
accompanying the appliance.
CAUTION
CAUTION: TO REDUCE THE RISK
OF ELECTRICAL SHOCK, DO
NOT REMOVE COVER. NO USER
SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.

WELCOME TO EPISODE®
Episode® is one of the most highly-regarded brands of audio products available today. We appreciate your business
and we stand committed to providing our customers with the highest degree of quality and service in the industry.
The Episode® EA-AMP-COMM-1A-120 Commercial Amplier Mixer is a superb choice for a variety of commercial
applications requiring paging and multi-source background music. It has been designed with advanced mixing features
and produces 120W RMS, providing the best value and quality for your commercial audio needs.
3
FEATURES
• 120 Watts RMS, 1 Channel
• AC and DC power options
• Low-Frequency lter protection
• Power level meter
• Detachable locking output connector for secure easy connections
• (4) Selectable Source inputs
• Optional 2 or 4 tone chimes triggered by a contact closure
• Preamp output for signal processing equipment or additional amplication
• Individual input volume and master volume
• Current limiter, short circuit and thermal protection
• (4) Balanced XLR microphone inputs with selectable priority and phantom power options
• Constant Voltage Options, 100V, 70V and 50V
• 4 or 8 Ohm speaker output capable

4
FRONT PANEL
1. MIC1/MIC2/MIC3/MIC4 – Microphone Gain Controls
2. SOURCE – Source Gain Control
3. BASS – Adjust Bass Response
4. TREBLE – Adjust Treble Response
5. MASTER – Master Volume Control
6. POWER – Power Switch
7. POWER INDICATOR LED
8. OUTPUT LEVEL METER
9. SOURCE SELECTION - Direct Input Selection Buttons
1 2 3 4 5 6
789

5
REAR PANEL
10. OPTIONAL 24VDC POWER INPUT
11. BALANCED MIC 1-4 XLR INPUTS
12. MICROPHONE GAIN CONTROLS
13. STEREO SOURCE INPUTS
14. REC LINE OUTPUT - Unbalanced xed stereo output post tone control
15. AMPLIFIER INPUT SIGNAL
16. JUMPER PLUG - Remove to connect external audio equipment such as an EQ, audio processor, or seperate amplier.
17. PREAMP OUTPUT SIGNAL - Unbalanced xed mono output post tone control
18. XLR LINE OUTPUT - Balanced xed output post tone control
19. CHIME VOLUME
20. CHIME REMOTE TRIGGER
21. MICROPHONE PRIORITY DIPSWITCH
22. CHIME SELECTION SWITCH
23. PHANTOM POWER SWITCHES
24. DETACHABLE SPEAKER OUTPUT CONNECTOR
25. DETACHABLE IEC POWER CORD
26. AC FUSE
10 11 12 13 14 15
1617181920212223242526

INSTALLATION – FIRST STEPS
PLACING THE AMPLIFIER ON A SHELF OR OTHER FLAT SURFACE
Episode ampliers are designed to help deliver a great audio experience
that makes your music come alive for years to come. However, where you
place the amplier can have a large effect on the performance that you
receive and the life of the unit. If you are not rack-mounting the amplier,
position it with all feet resting on a solid level surface. Be sure that the
amplier is in a well-ventilated area that provides adequate cooling.
If your installation lacks good air ow (such as solid door cabinets
or wall-mounted racks), it may be necessary to create ventilation
to allow outside air in to the space.
VENTILATION
Do not block the ventilation holes, or place anything directly
on top of, next to, or under the amplier. Do not place the
amplier on carpeting or any similar material. Do not install
the amplier near a source of heat or in an extremely
humid or wet location.
CONNECTIONS
NOTES:
• The 4Ω and Constant Voltage Output (100V, 70V and 50V) can’t be used simultaneously.
• Impedances noted in the diagrams above indicate the total impedance load.
XLR CONNECTIONS
6
Make sure that there is a minimum of 5”
of free air space above the amplier and
3” on each side for proper ventilation.
0
1
2
3
456
7
8
9
10 0
1
2
3
456
7
8
9
10 0
1
2
3
456
7
8
9
10 0
1
2
3
456
7
8
9
10 0
1
2
3
456
7
8
9
10 0
1
2
3
456
7
8
9
10
-12
•
•
•
•
0
•
•
•
•
+12 -12
•
•
•
•
0
•
•
•
•
+12
MIC 1M IC 2 MIC 3
SOURCE 1 SOURCE 2S OURCE 3 SOURCE 4
MIC 4S OURCE BASS TREBLEM ASTER
POWER
ON
OUTPUT LEVEL
3” 3”
5”
Allow a minimum of 2” of depth behind unit to
accommodate cables and connectors.
Standard Placement of Amplier in Cabinet
Minimum
Impedance
4Ω
Total
Impedance
21Ω
Total
Impedance
41Ω
Total
Impedance
83Ω

7
APPLICATION DRAWING
XLR CONNECTIONS
RACKMOUNT INSTALLATION
1. Remove the amplier’s four feet from the bottom
of the chassis.
2. Attach the included rack-mount ears to the front
sides of the amplier chassis.
3. Securely mount the amplier into an equipment
rack. The amplier will occupy 2U of rack space.
4. Even though the amplier produces very little heat,
it is always wise to leave ventilation between components.

Rated Power Output 120W
4 Microphone Inputs XLR Balanced With
Phantom Power
Sensitivity -50 /-2 dB 2.5 / 500 mV
Signal To Noise Ratio >68 dB
Frequency Response 40 / 17.000 Hz (-3 dB)
Phantom Power +48 V
4 Auxiliary Inputs
sensitivity/impednece
Source 1 iput:
500mV/47 KΩ
Source 2 iput:
200mV/47 KΩ
Source 3 iput:
500mV/47 KΩ
Source 4 iput:
200mV/47 KΩ
Signal To Noise Ratio 90 dB
Frequency Response 40 - 18 kHz (-3 dB)
SPECIFICATIONS
TROUBLESHOOTING
WARRANTY
5-Year Limited Warranty
Episode® Amplier Products have a 5-Year Limited Warranty. This warranty includes parts and labor repairs on all
components found to be defective in material or workmanship under normal conditions of use. This warranty shall
not apply to products which have been abused, modied or disassembled. Products to be repaired under this warranty
must be returned to SnapAV or a designated service center with prior notication and an assigned return
authorization number (RA).
Control
Bass ±12 dB
Treble ±12 dB
Chime 2 and 4 Tone Options
Output Electro/Impedance 775 mV / 47 KΩ
Output Rec/Impedance 200 mV / 1 KΩ
Distortion < 0.1%
Operating Condition
AC Mains Input 110VAC, 24 VDC
Optional
Dimensions (D x W x H) 19” x 14.3” x 3.5”
Power Consumption 120 Watts
Weight 24 lbs.
No audio
•Power cable to the amplier is incorrectly connected or plugged into an outlet that does not have power. Check connections
and verify power on the outlet.
•Audio cable to the source component is not connected properly or the cable is defective. Check connections or replace
cable with one that has been veried as good.
• The wrong input is selected.
• Conrm the master and source volume are set to the appropriate level.
Hum or buzzing
sound is heard
•Check RCA input cables by removing them one at time (powering down the amplier before disconnecting) and checking to
see if a connection or cable is to blame.
Amplier will
not turn on
•The amplier must be plugged into a live outlet.
•The power switch on the front panel must be on.
• Conrm the fuse is not blown
For Technical Support, call 1.866.838.5052
121019-1257