EMPHASER EA1250 Installation instructions

INSTALLATION & OPERATING MANUAL
EINBAU- & BEDIENUNGSANLEITUNG
MONO, 2-& 4-CHANNEL AMPLIFIERS
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CONTENTS
1. DESIGN FEATURES 5
2. CONNECTIONS & CONTROLS 6-11
2.1 FRONT PANEL CONNECTION & CONTROLS 6-11
2.2 REAR PANEL CONNECTIONS 6-11
2.3 SPEAKER IMPEDANCES & WIRE INFO 12
3. AMPLIFIER MOUNTING 12
4. WIRE ROUTING 13
4.1 MAIN POWER WIRES 13
4.1 RCA & REMOTE WIRES 13
4.3 LOUDSPEAKER WIRES 13
5. CROSSOVER ADJUSTMENTS 14
5.1 SELECTING THE OPERATION MODE 14
5.2 HIGHPASS CROSSOVER FREQUENCY ADJUSTMENT 14
5.3 LOWPASS CROSSOVER FREQUENCY ADJUSTMENT 14
5.4 SUBSONIC HIGHPASS CROSSOVER ADJUSTMENT 15
5.5 INPUT LEVEL ADJUSTMENT 15
6. TECHNICAL SPECIFICATIONS 29-30
7. EMPHASER LIMITED WARRANTY 31
7.1 WARRANTY LIMITATIONS 31
8. WARRANTY CARD 32
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INHALT
1. TECHNISCHER AUFBAU / MERKMALE 17
2. ANSCHLÜSSE & BEDIENUNGSELEMENTE 18-23
2.1. EINGÄNGE & FUNKTIONEN AM FRONT PANEL 18-23
2.2 EINGÄNGE AM REAR PANEL 18-23
2.3 LAUTSPRECHER-IMPEDANZ & KABELINFO 24
3. MONTAGE DES VERSTÄRKERS 25
4. VERKABELUNG / ELEKTRISCHER ANSCHLUSS 25
4.1 HAUPT-STROMKABEL 25
4.2 CINCH- & REMOTE KABEL 26
4.3 LAUTSPRECHERKABEL 26
5. EINSTELLUNG DER FREQUENZWEICHE 26
5.1 WAHL DES OPERATIONS-MODUS 26
5.2 HOCHPASS TRENNFREQUENZ EINSTELLUNG 27
5.3 TIEFPASS TRENNFREQUENZ EINSTELLUNG 27
5.4 SUBSONIC HOCHPASS TRENNFREQUENZ EINSTELLUNG 27
5.5 ANPASSUNG DER EINGANGSEMPFINDLICHKEIT 28
6. TECHNISCHE SPEZIFIKATIONEN 29-30
7. EMPHASER GARANTIE-BESTIMMUNGEN 31
7.1 GARANTIE-EINSCHRÄNKUNGEN 31
8. GARANTIEKARTE 32
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Congratulations!
And thank you for choosing this EMPHASER car audio 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 unit.
Please read this manual carefully, before attempting the installation of this amplifier. Please retain this
manual and your purchasing / installation receipts for future reference.
IMPORTANT NOTICE:
In case you are installing your EMPHASER amplifier 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- and audio performance possible with your
individual car audio system.
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1. DESIGN FEATURES
■CAR AUDIO AMPLIFIER: This EMPHASER amplifier allows the crossover controlled amplifica-
tion of satellite speaker systems, kickwoofer or 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 (not applicable for EA470)
■FULL-MOSFET CIRCUITRY: This EMPHASER amplifier line features a full MOS-FET circuitry lay-
out, implementing MOS-FET’s for power supply and output stages, to guarantee excellent sonic per-
formance and very high power output
■2 / 1 / 0.5 OHM LOAD STABILITY: This EMPHASER amplifier line up features models that
work stable and reliable into very low impedance loads. Due to the high damping factor, every model
of this amplifier line will guarantee full control over the connected speaker system(s)
■INTEGRATED ELECTRONIC CROSSOVER: The internal crossover section features independ-
ently selectable highpass or bandpass filtering, as well as fulllrange loop through. All x-overs feature
crossover slope rates of 18 dB/octave
■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. The power input side features mol-
ded direct power input terminals for full unrestricted current flow
■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 elec-
tronics
■STATUS AND PROTECTION LED’S: A green and a red LED located at 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 to the line-output levels of almost any head-unit on the market
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2.1 FRONT PANEL CONNECTIONS & CONTROLS
EA1250 MONO-AMPLIFIER
1+2 RCA INPUTS
Low-level stereo RCA signal input for connection with head-unit.
3INPUT GAIN CONTROL
Input level control - allowing to match the output voltage of the head-unit's RCA line-outs to
the amplifier input section.
4SUBSONIC
Control for the frequency adjustment of the 18dB/oct. subsonic crossover. The subsonic
filter is only active, when the operation mode is set to bandpass BPF.
5OPERATION MODE SWITCH
Switch to select the operation mode of the active crossover of the amplifier.
6LOW PASS FREQUENCY CONTROL
Control for the frequency adjustment of the 12dB/oct. low-pass crossover of the speakers
connected to the output terminals.
7REMOTE LOW PASS LEVEL INPUT
Telephone jack input socket for connection with the dash-mounted low-pass level remote unit.
The remote low pass level control is only active when the operation mode switch is set to
bandpass!
8POWER LED
Green "operation" LED, signaling correct operation of the amplifier.
9PROTECTION LED
Red "protection" LED, signaling faulty speaker connections or general malfunction of the
amplifier.
FRONT PANEL
EA1250 12
38 4 5 6 7 9
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2.2 REAR PANEL CONNECTIONS
REAR PANEL
EA1250
EA1250 MONO-AMPLIFIER
10 SPEAKER OUTPUT TERMINALS MONO
Output terminal to connect the speakers to the amplifier.
11 POWER INPUT TERMINAL "GND"
Terminal to connect the amplifier to the negative or ground pole of the car battery.
12 REMOTE INPUT TERMINAL "REM"
Terminal to connect the amplifier to the automatic (remote) turn-on / turn-off lead of
the head unit.
13 POWER INPUT TERMINAL "+12 V"
Terminal to connect the amplifier to the positive +12V pole of the car battery.
11
10 12 13
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2.1 FRONT PANEL CONNECTIONS & CONTROLS
EA275HCCA, EA2200 2-CHANNEL AMPLIFIERS
1+2 RCA INPUTS 1/2-CH
Low-level stereo RCA signal input for connection with head-unit.
3INPUT GAIN CONTROL 1/2-CH
Input level control - allowing to match the output voltage of the head-unit's RCA line-outs
to the amplifier input section.
4HIGH PASS FREQUENCY CONTROL 1/2-CH
Control for the frequency adjustment of the 18dB/oct. high-pass filtering of the speakers
connected to the output terminals.
5OPERATION MODE SWITCH 1/2-CH
Switch to select the operation mode of the active crossover of the amplifier.
6LOW PASS FREQUENCY CONTROL 1/2-CH
Control for the frequency adjustment of the 18dB/oct. low-pass filtering of the speakers
connected to the output terminals.
7REMOTE LOW PASS LEVEL INPUT
Telephone jack input socket for connection with the dash-mounted low-pass level remote unit.
The remote low pass level control is only active when the operation mode switch is set to
bandpass!
8POWER LED
Green "operation" LED, signaling correct operation of the amplifier.
9PROTECTION LED
Red "protection" LED, signaling faulty speaker connections or general malfunction of the
amplifier.
FRONT PANELS
EA275HCCA
EA2200 12
38 4 5 6 7 9
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2.2 REAR PANEL CONNECTIONS
REAR PANELS
EA275HCCA
EA2200 1110 12 13
EA275HCCA, EA2200 2-CHANNEL AMPLIFIERS
10 SPEAKER OUTPUT TERMINALS
Output terminal to connect the speakers in stereo or bridged mode to the amplifier.
11 POWER INPUT TERMINAL "GND"
Terminal to connect the amplifier to the negative or ground pole of the car battery.
12 REMOTE INPUT TERMINAL "REM"
Terminal to connect the amplifier to the automatic (remote) turn-on / turn-off lead of
the head unit.
13 POWER INPUT TERMINAL "+12 V"
Terminal to connect the amplifier to the positive +12V pole of the car battery.
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EA470 4-CHANNEL AMPLIFIER
1a/1b RCA INPUTS 1/2-CH
Low-level stereo RCA signal input for connection with head-unit.
2a/2b RCA INPUTS 3/4-CH
Low-level stereo RCA signal input for connection with head-unit.
3INPUT GAIN CONTROL 1/2-CH
Input level control for 1/2-CH amplifier section - allowing to match the output voltage of the
head-unit's RCA line-outs to the amplifier input section.
4HIGH PASS FREQUENCY CONTROL 1/2-CH
Control for the frequency adjustment of the 18dB/oct. high-pass filtering of the speakers
connected to 1/2-CH output terminals.
5OPERATION MODE SWITCH 1/2-CH
Switch to select the operation mode of the crossover filter driving 1/2-CH section of the
amplifier.
6LOW PASS FREQUENCY CONTROL 1/2-CH
Control for the frequency adjustment of the 18dB/oct. low-pass filtering of the speakers
connected to 1/2-CH output terminals.
7INPUT GAIN CONTROL 3/4-CH
Input level control for 3/4-CH amplifier section - allowing to match the output voltage of the
head-unit's RCA line-outs to the amplifier input section.
8HIGH PASS FREQUENCY CONTROL 3/4-CH
Control for the frequency adjustment of the 18dB/oct. high-pass filtering of the speakers
connected to 3/4-CH output terminals.
9OPERATION MODE SWITCH 3/4-CH
Switch to select the operation mode of the active crossover driving 3/4-CH section of the
amplifier.
10 LOW PASS FREQUENCY CONTROL 3/4-CH
Control for the frequency adjustment of the 18dB/oct. low-pass filtering of the speakers
connected to 3/4-CH output terminals.
11 POWER LED
Green "operation" LED, signaling correct operation of the amplifier.
12 PROTECTION LED
Red "protection" LED, signaling faulty speaker connections or general malfunction of the
amplifier.
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2.1 FRONT PANEL CONNECTIONS & CONTROLS
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