Crossover Adjustments - EMPHASER EA-MT1 Einbau & Bedienungsanleitung

CROSSOVER ADJUSTMENTS

For the amplifier to perform best with your speakers, the electronic crossover controls must
be set and adjusted accordingly.
SELECTING THE OPERATION MODE
You must select and set the appropriate operation mode before you can proceed to adjust
crossover frequency points. This operation mode depends on the speaker system connected
to the respective amplifier channels.
→ Select HPF if the speaker system is a component-, coaxial- or triaxial- type.
→ Select BPF in case of a midrange, kickbass or a subwoofer system.
→ Select Crossover "FULL" if your speaker system will handle a full range signal without
electrical or mechanical overload.
CROSSOVER FREQUENCY ADJUSTMENT
For satellite speaker systems, 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 speaker systems. Depending on cone surface, voice-coil diameter and the
power handling of the speakers, the following recommendations can be issued:
FRONT DOOR SATELLITE
SPEAKER SYSTEM PASSIVE
10 cm 2-way Coaxial or Component System
13 cm 2-way Coaxial or Component System
16 cm 2- or 3-way Component System
MIDRANGE SPEAKER HP CROSSOVER
SETTING (ACTIVE) FREQUENCY
10 cm Midrange 200 - 300 Hz
13 cm Midrange 80 - 110 Hz
16 cm Midrange 50 - 80 Hz
TWEETER
SETTING (ACTIVE)
The result of Resonance Frequency Fs x 2
is the minimum crossover frequency
REAR SATELLITE
SPEAKER SYSTEM
10 cm 2-way Coaxial or Component System
13 cm 2-way Coaxial or Component System
6x9" or 7x10" Triaxial Speaker System
* When a subwoofer is part of the audio system install.
HP CROSSOVER
FREQUENCY
200 - 300 Hz
80 - 110 Hz
50 - 80 Hz
LP CROSSOVER
FREQUENCY
3000 – 5000 Hz
3000 – 5000 Hz
3000 – 5000 Hz
LP CROSSOVER
FREQUENCY
3000 – 5000 Hz
HP CROSSOVER
FREQUENCY
120 - 140 Hz*
110 - 130 Hz*
100 - 120 Hz*
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SUBWOOFER CROSSOVER FREQUENCY ADJUSTMENT
Select "BPF", to activate the lowpass filter of the integrated electronic crossover. The lowpass
cut-off frequency setting depends on the woofer system and each vehicle is different! As a
rule of thumb, settings in between 60 to 90 Hz will usually give solid results for subwoofers.
Set the EA-MT4 "HPF" to the minimum at 20 Hz for 10" or 12" subwoofer and 30 Hz or higher
for smaller subwoofer. The EA-MT1 Subsonic filter can be set to 5 Hz – 20 Hz for 10" or 12"
woofers and 30 Hz or higher for smaller subwoofer. The woofer lowpass and highpass frequency
points are mostly a matter of taste, and must therefore be 'played by ear'.
INPUT GAIN ADJUSTMENT
To reach a maximum in dynamic response from each individual head-unit/amplifier/speaker
combination, it is important to set the respective input sensitivity controls („GAIN") of all chan-
nel 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.
SUBWOOFER CHANNEL(S)
Set the volume control of your head-unit to approximately ¾ of full volume, while playing a
dynamic piece of music. Slowly increase the input gain control of the channel pair driving the
subwoofer(s), by turning the GAIN control clockwise. Increase clockwise until the bass starts
to distort. Reduce the main volume level of your head-unit to a medium listening level. Proceed
with further channels, if applicable.
SATELLITE CHANNELS
Slowly increase the input gain control of the channel pair driving the satellite system, by turning
the GAIN control clockwise. Increase clockwise until you reach a good tonal balance with a
slight emphasis of the bass range. Repeat for all further channels.
FINE TUNING OF ALL CROSSOVER FREQUNCY POINT SETTINGS
Finally you can attempt to fine-tune the H.P.F. and/or the LPF crossover frequencies on your
amplifier setup, to reach the maximum tonal balance and channel integration of all loudspeak-
ers connected to your car audio system.
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