EMPHASER EA2220 Installation instructions

INSTALLATION & OPERATING MANUAL
EINBAU- & BEDIENUNGSANLEITUNG
2-/4-/5-CHANNEL AMPLIFIERS
EA2
E
A
2
11
0
60
60
60
6
0
EA2160EA2160
0
20
22
EA22
E
A
2
2
2
0
0
0
EA2220EA2220
0
80
EA48
E
A
4
8
8
0
0
0
EA480EA480
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1. DESIGN FEATURES 5
2. CONNECTIONS & CONTROLS 6-11
2.1 FRONT & REAR PANEL CONNECTION & CONTROLS EA2160/EA2220 6-7
2.2 FRONT & REAR PANEL CONNECTIONS & CONTROLS EA480 8-9
2.3 FRONT & REAR PANEL CONNECTION & CONTROLS EA450-300 10-12
2.4 SPEAKER IMPEDANCE & POWER WIRE INFO 13
3. AMPLIFIER MOUNTING 13
4. WIRE ROUTING 14
4.1 MAIN POWER WIRES 14
4.1 RCA & REMOTE WIRES 14
4.3 LOUDSPEAKER WIRES 14
5. CROSSOVER ADJUSTMENTS 15
5.1 SELECTING THE OPERATION MODE 15
5.2 HIGHPASS CROSSOVER FREQUENCY ADJUSTMENT 15
5.3 LOWPASS CROSSOVER FREQUENCY ADJUSTMENT 15
5.4 SUBSONIC HIGHPASS CROSSOVER ADJUSTMENT 16
5.5 INPUT LEVEL ADJUSTMENT 16
6. TECHNICAL SPECIFICATIONS 32-33
7. EMPHASER LIMITED WARRANTY 34
7.1 EMPHASER WARRANTY LIMITATIONS 34
8. WARRANTY CARD 35
CONTENTS
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1. TECHNISCHER AUFBAU / MERKMALE 17
2. ANSCHLÜSSE & BEDIENUNGSELEMENTE 18-23
2.1. EINGÄNGE & FUNKTIONEN AM FRONT & REAR PANEL EA2160/EA2220 20-21
2.2 EINGÄNGE & FUNKTIONEN AM FRONT & REAR PANEL EA2160/EA2220 22-23
2.3 EINGÄNGE & FUNKTIONEN AM FRONT & REAR PANEL EA2160/EA2220 24-26
2.4 LAUTSPRECHER-IMPEDANZ & POWERKABEL INFO 27
3. MONTAGE DES VERSTÄRKERS 28
4. VERKABELUNG / ELEKTRISCHER ANSCHLUSS 28
4.1 HAUPT-STROMKABEL 29
4.2 CINCH- & REMOTE KABEL 29
4.3 LAUTSPRECHERKABEL 29
5. EINSTELLUNG DER FREQUENZWEICHE 29
5.1 WAHL DES OPERATIONS-MODUS 29
5.2 HOCHPASS TRENNFREQUENZ EINSTELLUNG 30
5.3 TIEFPASS TRENNFREQUENZ EINSTELLUNG 30
5.4 SUBSONIC HOCHPASS TRENNFREQUENZ EINSTELLUNG 30
5.5 ANPASSUNG DER EINGANGSEMPFINDLICHKEIT 31
6. TECHNISCHE SPEZIFIKATIONEN 32-33
7. EMPHASER GARANTIE-BESTIMMUNGEN 34
7.1 EMPHASER GARANTIE-EINSCHRÄNKUNGEN 34
8. GARANTIEKARTE 35
INHALT
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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 the EMPHASER amplifier model
you have chosen. 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 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.
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1. DESIGN FEATURES
■CAR AUDIO AMPLIFIER: This EMPHASER amplifier allows the crossover controlled amplification
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 EA480)
■FULL-MOSFET CIRCUITRY: This EMPHASER amplifier line features a full MOS-FET circuitry
layout, implementing MOS-FET’s for power supply and output stages, to guarantee excellent sonic
performance and very high power output
■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
guaranteed to have full control over the connected speaker system(s)
■INTEGRATED ELECTRONIC CROSSOVER: The internal crossover section features indepen-
dently selectable highpass or bandpass filtering, as well as fulllrange loop through. All x-overs feature
crossover slope rates of 12/24 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.
■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 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 mar-
ket
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2. CONNECTIONS & CONTROLS
2.1 REAR PANEL EA2160/EA2220NEL EA2160/EA2220EA2160/EA2220
9 “OUTPUT TERMINALS”
Loudspeaker output terminal to connect the loudspeakers.
10 “GND” POWER INPUT TERMINAL
Moulded direct power input terminals to connect the amplifier to the negative or ground
wire of the vehicle
11 “REMOTE” INPUT TERMINAL
Terminal to connect the amplifier to the automatic (remote) turn-on / turn-off lead of the
head unit
12 “+12V” POWER INPUT TERMINAL
Moulded direct power input terminals to connect the amplifier to the positive +12V power
wire connected to the car batterycar battery
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2. CONNECTIONS & CONTROLS
2.2 FRONT PANEL EA480
1 POWER LED
Green „operation“ LED, signaling correct operation of the amplifier.
2 INPUT 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.
3 HIGH PASS FREQUENCY CONTROL 1/2-CH
Control for the frequency adjustment of the 12dB/oct. high-pass filtering of the speakers
connected to 1/2-CH output terminals.
4 OPERATION MODE SWITCH 1/2-CH
Switch to select the operation mode of the crossover filter driving 1/2-CH section of the
amplifier.
5 LOW PASS FREQUENCY CONTROL 1/2-CH
Control for the frequency adjustment of the 24dB/oct. low-pass filtering of the speakers
connected to 1/2-CH output terminals.
6 INPUT 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.
7 HIGH PASS FREQUENCY CONTROL 3/4-CH
Control for the frequency adjustment of the 12dB/oct. high-pass filtering of the speakers
connected to 3/4-CH output terminals.
8 OPERATION MODE SWITCH 3/4-CH
Switch to select the operation mode of the active crossover driving 3/4-CH section of the
amplifier.
9 LOW PASS FREQUENCY CONTROL 3/4-CH
Control for the frequency adjustment of the 24dB/oct. low-pass filtering of the speakers
connected to 3/4-CH output terminals.
10 PROTECTION LED
Red „protection“ LED, signaling faulty speaker connections or general malfunction of the
amplifier.
11 RCA INPUTS 1/2-CH 3/4-CH
Low-level stereo RCA signal input for connection with head-unit.
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2. CONNECTIONS & CONTROLS
2.2 REAR PANEL EA480
12 SPEAKER OUTPUT TERMINALS 1/2-CH and 3/4-CH
Output terminals to connect the speakers in stereo or bridged mode to the amplifier.
13 „GND“ POWER INPUT TERMINAL
Terminal to connect the amplifier to the negative or ground pole of the car battery.
14 „REM“ REMOTE INPUT TERMINAL
Terminal to connect the amplifier to the automatic (remote) turn-on / turn-off lead of the
head unit.
15 „+12 V“ POWER INPUT TERMINAL
Terminal to connect the amplifier to the positive +12V pole of the car battery.
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2. CONNECTIONS & CONTROLS
2.3 FRONT PANEL EA450-300
1 RCA INPUTS 1/2-CH
Low-level stereo RCA signal input for connection with head-unit.
2 RCA INPUTS 3/4-CH
Low-level stereo RCA signal input for connection with head-unit.
3 STEREO RCA INPUT 5-CH
Low-level stereo RCA signal input for connection with head-unit.
4 POWER LED
Green „operation“ LED, signaling correct operation of the amplifier.
5 INPUT 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.
6 HIGH PASS FREQUENCY CONTROL 1/2-CH
Control for the frequency adjustment of the 12dB/oct. high-pass filtering of the speakers
connected to 1/2-CH output terminals.
7 OPERATION MODE SWITCH 1/2-CH
Switch to select the operation mode of the active crossover driving 1/2-CH section of the
amplifier.
8 INPUT 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.
9 HIGH PASS FREQUENCY CONTROL 3/4-CH
Control for the frequency adjustment of the 12dB/oct. high-pass filtering of the speakers
connected to 3/4-CH output terminals.
10 OPERATION MODE SWITCH 3/4-CH
Switch to select the operation mode of the active crossover driving 3/4-CH section of the
amplifier.
11 LOW PASS FREQUENCY CONTROL 3/4-CH
Control for the frequency adjustment of the 24dB/oct. low-pass filtering of the speakers
connected to 3/4-CH output terminals.
12 INPUT GAIN CONTROL 5-CH
Input level control for 5-CH amplifier section - allowing to match the output voltage of the
head-unit‘s RCA line-outs to the amplifier input section.
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2. CONNECTIONS & CONTROLS
2.3 REAR PANEL EA450-300
18 SPEAKER OUTPUT TERMINALS 1/2-CH
Output terminal to connect the speakers to the 1/2-CH channels of the amplifier.
19 SPEAKER OUTPUT TERMINALS 3/4-CH
Output terminal to connect the speakers to the 3/4-CH channels of the amplifier.
20 SPEAKER OUTPUT TERMINALS 5-CH
Output terminal to connect the speakers to the 5-CH mono channel of the amplifier.
21 „GND“ POWER INPUT TERMINAL
Terminal to connect the amplifier to the negative or ground pole of the car battery.
22 „REM“ REMOTE INPUT TERMINAL
Terminal to connect the amplifier to the automatic (remote) turn-on / turn-off lead of the
head unit.
23 „+12 V“ POWER INPUT TERMINAL
Terminal to connect the amplifier to the positive +12V pole of the car battery.
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2.4 SPEAKER IMPEDANCE & POWER WIRE INFO
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, humid-
ity, 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.
The heat dissipation capacity of this amplifier line has been designed to cope with low impedance
loads. However, EMPHASER laboratories recommend to stay at or above the suggested impedance
ratings listed below:
EA2160 ➡4 ohms mono / 2 ohms stereo
EA2220 ➡2 ohms mono / 1 ohms stereo
EA480 ➡4 ohms mono / 2 ohms stereo
EA450-300 ➡4 ohms mono / 2 ohms stereo & 2 ohms for 5CH
Note: EMPHASER laboratories recommend a minimum main power cable cross-
section (5m total length) of 25 to 35 mm², for both the positive and the ground
wires.
These recommendations guarantee trouble-free operation of your amplifier, giving you full power
output.
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4. WIRE ROUTING
Important! There must not be a direct contact of the amplifier heatsink, bottom
panel or any other metal part of the amplifier to the vehicle! Electrical ground-
loops can result in audible hum!
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 – there-
fore 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 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. Pay attention to connect the stereo interconnects correspondingly,
left is 1CH, right is always 2CH a.s.o.
If you want to drive a subwoofer system with your amplifier, you can install the remote low pass level
remote control in a convenient position under or besides the dashboard.
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. Maintain correct
polarity („A“ to „A“; „B„ to „B„).
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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5. CROSSOVER ADJUSTMENTS
5.1 SELECTING THE OPERATION MODE
You must select and set the appropriate operation mode before you can attempt any of the crossover
frequency adjustments. This setting depends on the speaker system connected to the amplifier. Select
the appropriate operation mode as follows:
➡Select HIGHPASS, if the speaker system is a component-, coaxial- or triaxial- type.
➡Select BANDPASS in case of a kickbass system, or a subwoofer system.
Selecting the appropriate operating mode for each channel pair makes sure, that the speakers con-
nected to the amplifier outputs will only receive filtered signals, so the speakers will only have to oper-
ate in the frequency band they can reproduce best.
Note: If you own a head-unit, that features an integrated DSP controlled active crossover, it is recom-
mended to use the DSP based crossovers of the headunit. In this case, you have to set the operation
mode slide switch(es) to FULL(range)!
5.2 HIGHPASS CROSSOVER FREQUENCY ADJUSTMENT
For satellite speakers, you always select the “HPF” mode, to cut off the bass content in the music signal.
Highpass filtering will take away unnecessary mechanical and electrical ‘strain’ from the connected
coaxial or component speaker systems, as they cannot reproduce strong and low bass signals any-
way. Depending on the actual cone surface, voice-coil diameter and the rated power handling of the
installed ‘satellite’ speakers, it is recommended to set the high-pass cross-over frequency point between
50 and 150Hz, using the „HPF“ potentiometer.
FRONT DOOR SATELLITE SPEAKER SYSTEM („HPF” MODE) HP CROSSOVER FREQUENCY
13 cm 2-way Component System 80 - 110Hz
16 cm 2- or 3-way Component System 50 - 80Hz
REAR SATELLITE SPEAKER SYSTEM („HPF” MODE) HP CROSSOVER FREQUENCY
13 cm 2-way Coaxial or Component System 100 - 120Hz*
16 cm 2-way Coaxial or Component System 100 - 120Hz*
6x9” or 7x10” Triaxial Speaker System 100 - 120Hz*
* When a subwoofer is part of the audio system install.
5.3 LOWPASS CROSSOVER FREQUENCY ADJUSTMENT
Select “BPF”, to activate the lowpass filter of the integrated electronic crossover.
Note: Before you attempt to adjust the lowpass crossover frequency, you must set the subsonic highpass
filter control (when “BPF” mode is selected) to its lowest position (10 Hz).
Note: For the 2- and 4-channel amplifier models, the bandpass (“BPF”) mode will engage the HPF
potentiometer as subsonic highpass.
The LOWPASS cut-off frequency setting depends on some variables, and each vehicle is different! As
a rule of thumb, settings in a range between 60 to 90 Hz will render best sonic results. This setting is
mostly a matter of taste, and should therefore be ‘played by ear’.
Note: In general, setting the lowpass crossover frequency too low, will result in a weak and muddy
sounding bass, while setting this crossover frequency too high will result in a ‘booming’ bass sound
and reduced low end extension.
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5.4 SUBSONIC HIGHPASS CROSSOVER FREQUENCY ADJUSTMENT
When driving a subwoofer in bandpass (“BPF”) operation mode, you should also adjust the subsonic
highpass frequency. This is done by adjusting the “HPF” potentiometer. This setting depends the size
and the power handling of the installed subwoofer system. The higher the subsonic crossover fre-
quency is set, the higher the mechanical power handling of the connected subwoofer system will be.
The trade-off is reduced low end extension! The subsonic highpass can not be bypassed, when the
operation mode is set to BPF mode, but you can set the HPF potentiometer at 10Hz, so the subsonic
highpass filtering remains inaudible.
5.5 INPUT LEVEL ADJUSTMENT
To reach a maximum in dynamic response from each individual head-unit/amplifier/speaker combi-
nation, it is important to set the respective input level controls („GAIN“) of all channel pairs correctly.
Before you start, you MUST set all tone controls (Bass, Mid, Treble, Loudness etc.) and the fader
on the head unit to their neutral or center positions.
Now turn all input gain controls of the installed amplifiers anti-clockwise to their minimum positions
and start with the channel pair, that drives the subwoofer system. The lowpass level remote control - if
installed in your system configuration - should be set at a low position, so there is enough headroom
to turn up the bass volume later on.
➡SUBWOOFER CHANNEL
Set the volume control of your head-unit to approximately 3/4 of full volume, while playing a dynamic
piece of music. Slowly increase the input gain control of the channel pair, that drives the subwoofer(s),
by turning the GAIN control clockwise until you can just about hear distorted sounds coming out of
your subwoofer system. Reduce the main volume level on your head-unit to a medium listening level.
➡SATELLITE CHANNELS
Slowly increase the input gain control of the channel pair, that drives the satellite system, by turning
the GAIN potentiometer clockwise, until you reach a good tonal balance with a slight emphasis in the
bass region. Aim at a full bodied bass response.
Now slowly turn up the input GAIN control of the remaining channel pair(s) - if any - until you reach
a good tonal balance between front and rear satellites.
➡FINE TUNING OF ALL CROSSOVER FREQUENCY POINT SETTINGS
Finally you can attempt to fine-tune the HP and BP crossover frequencies on your amplifier, to obtain
the best sound quality of all loudspeakers connected to your car audio system.
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Herzlichen Glückwunsch!
Wir danken Ihnen, dass Sie sich zum Kauf dieses EMPHASER Verstärkers entschieden haben.
Damit Sie die Wiedergabequalität und die Leistungsfähigkeit Ihres Verstärkers voll ausschöpfen kön-
nen, möchten wir Sie bitten, sich eingehend mit den Möglichkeiten und technischen Features dieses
Verstärkers vertraut zu machen. Lesen Sie deshalb die nachfolgenden Abschnitte sorgfältig durch und
bewahren Sie diese Bedienungsanleitung für allfällige, vielleicht später auftauchende Fragen auf.
WICHTIGE INFO:
Wenn Sie den Einbau dieses Car-HiFi Verstärkers selbst vornehmen, las-
sen Sie Ihren Einbau abschliessend von Ihrem Händler auf fachgerechte
Installation überprüfen. Damit sichern Sie sich die volle Garantieleistung und
stellen weiterhin sicher, dass Ihre Car-HiFi Anlage ihre volle Klangqualität und
Leistungsfähigkeit erreicht.
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1. TECHNISCHER AUFBAU/MERKMALE
■CAR AUDIO VERSTÄRKER: Dieser Verstärker dient zur Realisierung eines einbaufreundlichen
klangstarken und sehr leistungsfähigen Car Audio Systems
■SUBWOOFERPEGELREGELUNG ÜBER EXTERNE KABELFERNBEDIENUNG: Die im Fond
des Fahrzeuges montierbare kleine Fernbedienung ermöglicht die bequeme Anpassung der Lautstärke
des Subwoofers vom Fahrersitz (ausgenommen EA480)
■FULL MOS-FET SCHALTUNG: Eine FULL-MOSFET Schaltung sorgt für hohe Musikalität und sehr
hohe Ausgangsleitung
■LAST STABILITÄT: Die Kanäle dieser Verstärker Serie sind jeder für sich – in Abhängigkeit vom
Modell - mit Lastimpedanzen von bis hinunter auf 1 Ohm belastbar. Das Layout der Ausgangstufen
ist ausserdem auf niedrigen Innenwiderstand getrimmt, der Verstärker hat durch den resultierenden
hohen Dämpfungsfaktor die angeschlossenen Lautsprecher voll „im Griff“
■INTEGRIERTE ELEKTRONISCHE FREQUENZWEICHE: In diesem Verstärker sind, vollkommen
unabhängige elektronische Frequenzweichen mit einer Flankensteilheit von 12/24 dB/Okt. integriert.
Es lassen sich Hochpassfilter und Bandpassfilter wählen, oder der jeweilige Frequenzweichenzweig
kann im Fullrange Betrieb vollständig umgangen werden
■KOMPROMISSLOSER AUFBAU UND KONSTRUKTION: Durch die ausschliessliche
Verwendung von hochwertigsten Materialien in der Fertigung, ist die Betriebssicherheit besonders
hoch. Zum Einsatz kommen z.B. doppelseitig kaschierte Epoxy Glasfaser-Epoxydharzplatinen,
hochstromfähige Transistoren etc. Weiterhin verfügt diese Verstärkerlinie über „Direct Power-Input
Terminals“, die für vollen unlimitierten Stromfluss sorgen
■INTELLIGENTE SCHUTZSCHALTUNG: Die integrierte Schutzschaltung erkennt Kurzschlüsse an
den Lautsprecherausgängen, Gleichspannung im Ausgangssignal und überhöhte Betriebstemperatur.
Fehlerhafte Betriebszustände führen zum sofortigen Abschalten des Gerätes
■POWER / PROTECT LED’S: Am Side Panel auf der Cinch-Eingangsseite befinden sich zwei
LED’s, welche den Betriebs-Status des Verstärkers anzeigen
■GROSSER REGELBEREICH DER EINGANGSEMPFINDLICHKEIT: Die Line Level
Eingangspaare akzeptieren Vorverstärker-Signale von 300mV bis 7V. Dies garantiert, dass diese
Endstufe mit allen am Markt erhältlichen Steuergeräten kombiniert werden kann
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