Emphaser EA1350D User Manual
11
EA1350DEA1350D
11
EA1800DEA1800D
CLASS-D MONO AMPLIFIERS
INSTALLATION & OPERATING MANUAL
EINBAU- & BEDIENUNGSANLEITUNG
CONTENTS
Page
1. DESIGN FEATURES 5
2. CONNECTIONS & CONTROLS 6-8
2.1 FRONT PANEL CONNECTIONS & CONTROLS 6-7
2.2 REAR PANEL CONNECTIONS 8
2.3 SPEAKER IMPEDANCE & POWER WIRE INFO 9
3. AMPLIFIER MOUNTING 9
4. WIRE ROUTING 10
4.1 MAIN POWER WIRES 10
4.2 RCA & REMOTE WIRES 10
4.3 LOUDSPEAKER WIRES 10
4.4 MASTER/SLAVE CONNECTION SCHEMATIC 11
4.5 GENERAL CONNECTION SCHEMATIC 12
5. CROSSOVER ADJUSTMENTS 13
5.1 LOWPASS CROSSOVER FREQUENCY ADJUSTMENT 13
5.2 SUBSONIC HIGHPASS CROSSOVER ADJUSTMENT 13
5.3 INPUT LEVEL ADJUSTMENT 13
5.4 PHASE-SHIFT ADJUSTMENT 14
6. TECHNICAL SPECIFICATIONS 27-28
7. LIMITED WARRANTY 30
7.1 WARRANTY LIMITATIONS 30
8. WARRANTY CARD 31
INHALT
Seite
1. TECHNISCHER AUFBAU / MERKMALE 17
2. ANSCHLÜSSE & BEDIENUNGSELEMENTE 18-20
2.1. EINGÄNGE & FUNKTIONEN AM FRONT PANEL 18-19
2.2 EINGÄNGE AM REAR PANEL 20
2.3 LAUTSPRECHER-IMPEDANZ & POWERKABEL INFO 21
3. MONTAGE DES VERSTÄRKERS 21
4. VERKABELUNG / ELEKTRISCHER ANSCHLUSS 22
4.1 HAUPT-STROMKABEL 22
4.2 CINCH- & REMOTE KABEL 22
4.3 LAUTSPRECHERKABEL 22
4.4 MASTER/SLAVE ANSCHLUSS-SCHEMA 23
4.5 GENERELLES ANSCHLUSS-SCHEMA 24
5. EINSTELLUNG DER FREQUENZWEICHE 24
5.1 TIEFPASS TRENNFREQUENZ EINSTELLUNG 25
5.2 SUBSONIC HOCHPASS TRENNFREQUENZ EINSTELLUNG 25
5.3 ANPASSUNG DER EINGANGSEMPFINDLICHKEIT 25
5.4 PHASE-SHIFT EINSTELLUNG 26
6. TECHNISCHE SPEZIFIKATIONEN 27-28
7. GARANTIE-BESTIMMUNGEN 30
7.1 GARANTIE-EINSCHRÄNKUNGEN 30
8. GARANTIEKARTE 31
Congratulations!
And thank you for choosing this EMPHASER EA1350D/EA1800D digital mono amplifier!
To maximize the performance of this amplifier and your car audio system install, we recommend that
you acquaint yourself thoroughly with all capabilities and features of this EMPHASER amplifier.
Please read this manual carefully, before attempting the installation and retain this manual and your
purchasing / installation receipts for future reference.
IMPORTANT NOTICE:
In case you are installing your EMPHASER amplifier by yourself, you should
have your installation checked and approved by an authorized professional
EMPHASER dealer/installer, in order to qualify for full warranty protection and
also, to reach maximum power-output and audio performance possible with
your individual car audio system.
1. DESIGN FEATURES
■ CAR AUDIO AMPLIFIER: This EMPHASER class-D amplifier allows the cross-over controlled
amplification of subwoofer systems
■ DASH-MOUNT REMOTE LOWPASS LEVEL CONTROL: A compact „Lowpass-Level“ remote
control unit can be mounted close to the drivers seat. This control device allows the convenient level
adjustment of the bass volume.
■ DIGITAL AMPLIFICATION: This EMPHASER amplifier features an extremely efficient class-D
circuitry layout, to guarantee excellent sonic performance and very high power output.
■ 4 / 2 / 1 OHM LOAD STABILITY: This EMPHASER amplifier works totally stable into impe-
dance loads down to 1.0 ohms. The high damping factor guarantees full control over the connected
subwoofer system.
■ INTEGRATED ELECTRONIC CROSSOVER: The internal crossover section features fully variable
subsonic and lowpass filters with crossover slope rates of 12/24 dB/octave.
■ VARIABLE PHASE-SHIFT: This amplifier features a variable phase-shift control option, that
allows to adjust the output signal from 0 to 180°.
■ MASTER – SLAVE CONFIGURATION: Two EA1350D/EA1800D can be connected together,
to obtain an ultra high output power twin-amp configuration.
■ UNCOMPROMISING DESIGN AND CONSTRUCTION: Only best electrical and electronic
components have been used for the assembly of this amplifier line. Such as double-sided glass-fiber
epoxy circuit boards equipped with high current TR output devices.
■ ADVANCED PROTECTION CIRCUITRY: The protection circuitry safe-guards the amplifier
from short-circuits at the speaker outputs, DC offset voltage at the outputs and overheating of power
electronics.
■ STATUS AND PROTECTION LED’S: A green and a red LED located at input the side panel
enable you to monitor the operating status of your EMPHASER amp.
■ ADJUSTABLE INPUT SENSITIVITY: Each RCA line-input pair accepts input voltages from
300mV to 7V, providing a good match with the line-output levels of almost any head-unit on the
market.
2. CONNECTIONS & CONTROLS
2.1 FRONT PANEL CONNECTIONS & CONTROLSANEL CONNECTIONS & CONTROLS
01 POWER LED
Green “operation” LED, signaling correct operation of the amplifier
02 INPUT GAIN CONTROL
Input level gain control potentiometer, allowing to match the output voltage of the headunit’s
RCA line-outs to the amplifier input section
03 RCA INPUTS 1/2-CH
Low-level stereo RCA signal input for connection with line-out of the head-unit (sub-out)
04 SUBSONIC CROSSOVER FREQUENCY CONTROL
Crossover control potentiometer for the frequency adjustment of the 12dB/oct. subsonic
high-pass filter
05 LOW PASS CROSSOVER FREQUENCY CONTROL
Crossover control potentiometer for the frequency adjustment of the 24dB/oct. low-pass
filter
06 PHASE SHIFT CONTROL
Phase control potentiometer for the relative phase adjustment of the subwoofer(s) connected
to the amplifier output terminals
07 RCA FOR MASTER/SLAVE OPERATION
RCA output to connect another EA1350D/EA1800D class-D amplifier
8 SWITCH FOR MASTER/SLAVE OPERATION
Telephone jack input socket for connection with the dash-mounted low-pass level remote
unit
9 REMOTE LOW PASS LEVEL PORT
Slide switch to define each amp being either master or slave
10 PROTECTION LED
Red “protection” LED, signaling faulty speaker connections or general malfunction of the
amplifier
REAR PANEL EA1350D
1
1
2 3 4 3 5 6 7 8 9 bl
REAR PANEL EA1800D
2 3 4 3 5 6 7 8 9 bl
2.3 SPEAKER IMPEDANCE & POWER WIRE INFO
The heat dissipation capacity of this amplifier has been designed to cope with very low impedance loads.
However, EMPHASER laboratories recommend to stay at or above the suggested impedance ratings
listed below:
EA1350D/EA1800D ➡ 1 ohms mono
2 x EA1350D/EA1800D in Master/Slave configuration ➡ 2 ohms mono
Note: EMPHASER laboratories recommend a minimum main power cable cross-section (5m total
length) of minimum 35mm² better 50 mm², when the amp is intended to be operated at full output
power for prolonged periods of time.
These recommendations guarantee trouble-free operation of your amplifier, giving you full power
output.
3. AMPLIFIER MOUNTING
Attention! For your own safety, disconnect the positive battery terminal (+12V)
or remove the main fuse in the positive power cable near the car battery, before
you start any wiring work!
Before you proceed to install this EMPHASER amplifier, it is recommended to map out the complete
audio system and the respective wiring required. Consider all additional electrical requirements and
accessories, such as power cables, interconnect cables etc., to complete this install. Please note that
- because of possible interference problems with the existing car electrics and electronics - especially
the routing of the signal cables and the chassis ground connection will have a profound impact on the
trouble-free (noise free!) operation of the amplifier.
The mounting location should be carefully selected and in the interest of passive driver and passenger
safety, the amplifier must be securely mounted. Make sure that there is no wiring harness, fuel tank
etc. behind or below the mounting surface, that may be damaged by the drilling of the holes for the
amplifier mounting screws. After installation, there should be a clearance of at least 5cm to all sides
including the top of the amplifier heatsink. Make sure the unit is not exposed to direct sunlight, humidity, water, oil or spill of other fluids that may enter the amplifier.
Once the location where the amplifier will be mounted is defined, use the unit as a template for the
marking of the mounting holes with pencil or felt-tip marker. The mounting holes should be pilot-drilled,
using a 2,5mm or 3mm drill bit. For the actual mounting, always use the supplied rubber washers
before attaching the amp to the panel with the supplied mounting screws.
Important! There must not be a direct contact of the amplifier heatsink, bottom
panel or other metal parts to the vehicle chassis ground! Electrical ground-loops
can result in audible hum!
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4. WIRE ROUTING
4.1 MAIN POWER WIRES
Run the positive main power cable („+12 V“) directly from the positive terminal of the car battery to
the amplifier. For protection of your car audio system against electrical fire hazards, resulting from a
short-circuit of the main power cable to chassis ground a main fuse holder must be inserted
within the first 30 cm of the positive main power cable. The applicable fuse value must
be matched to the limitations of your main power cable AND the current draw of the amplifier – therefore choose an appropriate fuse value.
Attach the ground cable to the amplifier. In most cases it will be best to keep the ground
cable („-12V“) as short as possible, i.e. to find a chassis contact very close to the amplifier. The ground
power wire must have the same cross-section as the positive power cable. The contact point where the
ground wire is attached to, must be solid and clean, i.e. free from rust or paint!
Tighten both power input terminals of the amplifier, and double check for perfect fit of both main
cable leads!
4.2 RCA & REMOTE WIRES
Carefully run the audio signal interconnects, the amp remote wire and – if applicable - the cable of the
low pass level remote control from the head-unit or dashboard to the amplifier. As mentioned before,
the audio signal cables should always be routed completely separate from the power cables. Connect
the remote (turn on/turn off) lead to the respective input terminal of the amplifier and to the remote
output of your head-unit. Now you can connect the RCA interconnects to the respective outputs of
your head-unit and to the inputs of the amplifier. The remote low pass level remote control unit can be
mounted in any convenient position where it can be reached while you drive in your car.
4.3 LOUDSPEAKER WIRES
Once the speaker cables have been routed, turn loose the screws of the speaker terminal binding
posts and – after inserting the stripped speaker cables – re-tighten the screws. When baring wires for
connection, remove approximately 6-8mm of the insulation and after axially twisting the wires, insert
the bare ends into the corresponding speaker terminal output on the amplifier.
Close the electrical circuit by inserting the main fuse. Now switch on your head unit. The green
OPERATING LED of the amplifier should light up. If the LED lights up red, your installation is wrong!
Immediately turn off your head-unit and carefully re-check all installation steps!
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