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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