Istruzioni inglese SXR4
IN-OUT PANEL
CONNECTIONS DIAGRAM
HAND-FREE PHONE
Remote
Mute
OWNER’S MANUAL
Pre Out
4 way electronic crossover
SXR4
Battery
SXR4 – TECHNICAL FEATURES
4 way electronic crossover with variable gain outputs for subwoofer, woofer, midrange and tweeter. 18dB/Oct. Bessel
filters. “Ambient” function, to adjust and control staging. Narrow band boost filter set at 45 Hz, with variable gain.
Automatic muting when the device is switched on and off. Inputs for remote and external muting. 24 Ct. gold-plated
RCA sockets.
L
R
L
To another
amplifier
Sub
Amp
R
L
Rear
Amp
L
R
L
Woofer
Amp
R
L
Wf
SUB
SUB
50
R L
60
120
100
50
80
60
120
100
R
Tweeter
Amp
R L
Midrange
Tweeter
Wf
Woofer
Midrange
HI-REAR
80
60
120
100
WOOFER
300
600 1200
400
900
4 VRMS
4 VRMS
15 kOhms
1 kOhm
3 ÷ 15 VDC
285 x 40 x 120 mm
1500, 2500, 3500, 5000, 7000 Hz.
+6 ÷ -12 dB
0°/180°
MIDRANGE
HI cut-off frequency:
LO cut-off frequency:
Level control:
Phase inversion:
300, 400, 600, 900, 1200 Hz.
1500, 2500, 3500, 5000, 7000 Hz.
+6 ÷ -12 dB
0°/180°
WOOFER
HI cut-off frequency:
LO cut-off frequency:
Level control:
50, 60, 80, 100, 120 Hz.
300, 400, 600, 900, 1200 Hz.
+6 ÷ -12 dB
SUB
LO Cut-off frequency:
Level control:
Boost level, 45 Hz:
Phase inversion:
Stereo/Mono:
50, 60, 80, 100, 120 Hz.
+6 ÷ -12 dB
0 ÷ +6 dB
0°/180°
selectable.
HI-REAR
HI Cut-off frequency:
Level control:
it depends on HI Woofer section setting.
not available.
Tweeter
MIDRANGE 1500 3500 7000 TWEETER
Max. input level
Max. output level
Input impedance
Output impedance
MUTE-REMOTE input
Size (W x H x D)
HI Cut-off frequency:
Level control:
Phase inversion:
FRONT
50
10 ÷ 15 VDC
30 VDC
5 Hz ÷ 200 kHz
> 100 dB
> 70 dB (10 kHz)
0.004%
TWEETER
R
Tw
REAR
80
L
Midrange
Amp
Woofer
Tw
R
External power supply
Internal power supply
Bandwidth
S/N ratio
Stereo separation
Distortion
2500 5000
Cod. 10124040
- 62018 Potenza Picena (MC) - Italy - Tel. +39 0733 870.870 - Fax +39 0733 870.880 www.audison.com
CONTROLS PANEL – FUNCTIONS
1
DESCRIPTION
SXR4 is a 4 way electronic crossover designed to handle a Woofer + Midrange + Tweeter + Sub system. It has an input
(IN) for the signal coming from the source and six outputs; four of them are main outputs, two are secondary. The first of
the four main outputs (SUB) provides a subwoofer Lo-Pass signal; the second (WOOFER) supplies a woofer Band-Pass
signal; the third (MIDRANGE) insures a Band-Pass signal for the midrange; the fourth (TWEETER) gives a Hi-Pass signal
suitable to drive a tweeter.
The HI-REAR output (one of the two secondary ones) has to be used for the realisation of a Rear system to be filtered
by passive crossover; it provides a unitary gain Hi-Pass signal taken from the woofer section Hi-Pass filter (WOOFER
HI); Hi-Pass signal has the same cut-off frequency as Woofer section itself. The BYPASS output permits to send the full
range signal in the input to another amplifier installed after the crossover.
SXR4 controls panel is divided in six sections: TWEETER, MIDRANGE, WOOFER, SUB, BOOST and AMBIENT.
TWEETER, MIDRANGE, WOOFER and SUB sections have five step switches for five cut-off frequencies (TW: HI;
MID: LO-HI; WOOFER: LO-HI; SUB: LO) and a level control. TWEETER, MIDRANGE and SUB sections also have a
switch for signal phase inversion between 0° and 180° (PHASE), that allows to align subwoofer, midrange, tweeter and
woofer. SUB section has a switch to choose functioning mode (MONO/STEREO).
BOOST section widens and increases subwoofer frequency response. It consists of a boost filter with adjustable gain,
whose frequency is set at 45 Hz (LEVEL 45 Hz).
Acting on the sum and the difference between the two stereo channels, AMBIENT section widens sound image. It has an
adjustable level control (LEVEL) and an ON/OFF switch.
FILTERS TYPOLOGY
SXR4 filters have Bessel configuration with low group delay, which insures the speakers correct acoustic alignment.
Filters slope is 18dB/Oct.; it provides speakers with safer and more linear functioning than cuts with lower slope can do
and limits the overlap of their working areas. Cut-off frequency can be chosen among five pre-set values for SUB,
WOOFER HI, WOOFER LO, MIDRANGE HI, MIDRANGE LO and TWEETER HI; this makes SXR4 suitable to every
speakers system avoiding problems created by linear adjustment. Since the latter occurs through potentiometers, it is
inaccurate both for frequencies value and for filters correct functioning. The use of very low tolerance components (1%
resistors and capacitors) insures precise and constant filters performances.
4
1500
2500
3500
5000
7000
-Hz-
HI
PHASE
ϕ
1500
2500
3500
5000
7000
-Hz-
LO
ϕ
TW-LEVEL
50
60
80
100
120
-Hz-
HI
7
LEVEL
50
60
80
100
120
-Hz-
LO
PHASE
ϕ
45 Hz
SXR4
6
13
10
ON
OFF
LEVEL
AMBIENT
SUB
WOOFER
BOOST
MONO
STEREO
SUB-LEVEL
WOOFER-LEVEL
MID-LEVEL
2
15
0
MIDRANGE
TWEETER
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
300
400
600
900
1200
-Hz-
LO
0
0
3
300
400
600
900
1200
-Hz-
HI
PHASE
11
9
8
5
12
14
16
ON
17
18
HI: It adjusts Tweeter section cut-off frequency.
TW-LEVEL: It adjusts Tweeter section output level.
PHASE: It permits to invert the phase of the signal in the TWEETER output between 0° (0) and 180° (-ψ).
LO: It adjusts the midrange Lo-Pass filter cut-off frequency.
HI: It adjusts the midrange Hi-Pass filter cut-off frequency.
MID-LEVEL: It adjusts the output level of the MIDRANGE section that drives the midrange.
PHASE: It permits to invert the phase of the signal in the MIDRANGE output between 0° (0) and 180° (-ψ).
LO: It adjusts the woofer Lo-Pass filter cut-off frequency.
HI: It adjusts the woofer Hi-Pass filter cut-off frequency.
WOOFER LEVEL: It adjusts the output level of the WOOFER section that drives the woofer.
LO: It adjusts subwoofer cut-off frequency.
SUB LEVEL: It adjusts the output level of the SUB section that drives the subwoofer.
PHASE: It permits to invert the phase of the signal in the SUB output between 0° (0) and 180° (-ψ).
MONO/STEREO: It selects subwoofer functioning mode as Mono or Stereo.
BOOST LEVEL 45 Hz: It increases the subwoofer response at 45Hz fixed frequency.
AMBIENT LEVEL: It adjusts sound image width (staging).
AMBIENT ON/OFF: It bypasses AMBIENT LEVEL control.
ON (green led): It indicates crossover is on.
IN-OUT PANEL - FUNCTIONS
1
2
PRECAUTIONS
SXR4 crossover must be installed only in vehicles with 12VDC power supply voltage with negative to
ground.
It is important NOT TO USE any other kinds of electric power supply in order to avoid fires or possible
electrocutions.
Avoid to install the device where temperature is below 0°C or above 55°C and in case of extreme humidity (<10% or
>90%).
Avoid to install it in dusty places or in contact with liquids.
INSTALLATION
This crossover must be fixed through the four screws and spacers given with it. In order to get the best installation, we
recommend the use of audison cable products, that can satisfy all needs.
SXR4
L
POWER
REM MUT
R
3
BY-PASS
IN
SUB
HI-REAR
WOOFER
MIDRANGE
TWEETER
4
5
6
7
8
9
10
1. POWER: Power supply sockets. Connect the positive pole cable (+) and the negative pole cable (-) coming from battery
to them. Respect polarities.
2. REM: Socket to connect the Remote cable coming from source that controls the crossover switching on.
3. MUT: Socket to connect the Mute cable coming from source or from hand-free telephone.
4. BYPASS: Preamplified outputs; they permit to supply another amplifier that is after the crossover with a full range signal.
5. IN: Crossover preamplified inputs. Connect cables coming from source preamplified outputs to them.
6. SUB: Preamplified outputs to connect to subwoofer amplifier. They supply a 18dB/Oct., Lo-Pass filtered signal.
7. HI-REAR: Preamplified outputs to connect to Rear system amplifier. They supply a 18dB/Oct., Hi-Pass filtered
signal.
8. WOOFER: Preamplified outputs to connect to woofer amplifier. They supply a 18dB/Oct., Band-Pass filtered
signal.
9. MIDRANGE: Preamplified outputs to connect to midrange amplifier. They supply a 18dB/Oct., Band-Pass filtered
signal.
10. TWEETER: Preamplified outputs to connect to tweeter amplifier. They supply a 18dB/Oct., Hi-Pass filtered signal.
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