SPL Audio Crossover Mk2 Analog 2-Way Crossover, Black

Manufacturer's Description

The analog crossover in its second generation
The second generation of the SPL Crossover features even more crossover frequencies and an extended range of functions – making it the best and most versatile SPL crossover ever. The perfect integration of bass loudspeakers or subwoofers can be difficult. There are almost only digital crossovers for this purpose. But who wants to convert back to digital in an analog high-end playback chain? Our analog Crossover Mk2 sets the crossovers anew and rewards with outstanding listening pleasure – thanks to the SPL VOLTAiR technology.

Great design – a must have
Visually, the SPL Crossover Mk2 fits perfectly into the SPL HiFi line. Professional Fidelity – and is of course available in the three basic colors black, red or silver.

Crossing over
The Crossover Mk2 is divided into two sections: The LOW PASS section for the bass loudspeaker or subwoofer (mono or stereo) and the HIGH PASS section for the top/main speakers. The crossover frequencies for the LOW PASS and HIGH PASS can be set individually from 20 Hz to 3,6 kHz.

X-FREQ
With the respective three-position switch X-FREQ, the frequency range for the LOW PASS or HIGH PASS can be pre-set. The following three options are possible:

• Switch position, top – 1,5 kHz to 3,6 kHz
• Switch position, center – 300 Hz to 700 Hz
• Switch position, bottom – 50 Hz to 120 Hz

X-OVER | Hz
The X-OVER | Hz switch features six switching positions. This switch is used to pre-set the crossover frequency of the LOW PASS or HIGH PASS. Depending on the pre-selection made with the X-FREQ switch, 18 different crossover frequencies can be set.

X-FREQ switch position, top – 1.5 kHz to 3.6 kHz:
1,5 kHz – 1,8 kHz – 2,1 kHz – 2,6 kHz – 3 kHz – 3,6 kHz

X-FREQ switch position, top – 300 Hz to 720 Hz:
300 Hz – 360 Hz – 420 Hz – 510 Hz – 600 Hz – 720 Hz

X-FREQ switch position, bottom – 50 Hz to 120 Hz:
50 Hz – 60 Hz – 70 Hz – 85 Hz – 100 Hz – 120 Hz

ROLL-OFF
The slope of the LOW PASS respectively HIGH PASS can be switched from 12 dB to 24 dB with the ROLL-OFF switch.

LOW CUT
In addition, there is also a low-cut filter. This filter frees both paths, the LOW PASS and HIGH PASS, from unwanted frequencies below 20 Hz. This means that the power amplifier does not have to amplify inaudible low frequencies and the loudspeaker is discharged.

In Phase
Audio signals should come from the top speakers and bass loudspeakers or subwoofers in phase. The Crossover MK2 offers variable phase control for this purpose.

PHASE
The three-position toggle switch PHASE can be used to activate phase control.The dedicated control is used to establish synchronization.

If the toggle switch PHASE is in the top position (VAR 0°), a value between 0° and 180° can be set using the control. If the toggle switch PHASE is in the top position (VAR -180°), a value between 0° and -180° can be set via the control, thus allowing a control range of 360°.

If the phase control is not required, it can be switched off (OFF) and thus disappears completely from the signal path.

LP OUTPUT – Would you like a bit more?
If you want to connect two bass loudspeakers or subwoofers (one for L and one for R), this switch should be set to stereo.

If you only use one bass loudspeaker or subwoofer, switch to mono.

The crossover creates a mono signal of the Low frequencies and outputs it to both Low outputs (L + R).

HIGH PASS –  on or off?
If you prefer to run the top/main speakers full-range, you can switch off the HIGH PASS filter.

As long as you‘re having fun
The playback volume of the bass loudspeaker or subwoofer can be varied from -10 dB to +10 dB. In addition to the purely corrective adjustment of the speaker system, you can add more bass into recordings that lack low end. Happiness is when the bass kicks in.

Source of joy – balanced or unbalanced
Gold-plated RCA and XLR sockets are available as connections for each stereo input and stereo output. This allows the Crossover Mk2 to be integrated into any set-up without the need for additional adapters.
    
On the output side, the signal is always present at the RCA and XLR outputs.

On the input side, the INPUT switch is used to switch between the XLR and RCA inputs.

On
Crossover Mk2 can be switched on with the ON switch (switch is in the top position).

Everything under control– AMP CTL
The standby mode for up to four devices with 12V trigger input can be switched on and off via AMP CTL, together with the Crossover Mk2 (AMP CTL Out). This is especially useful for connecting power amplifiers. But also the standby mode of the Crossover Mk2 itself can be switched on and off by a preamplifier, such as the Director Mk2, Elector or the Phonitor x, via AMP CTL (AMP CTL In).

Sounds good
With all devices of the Professional Fidelity series we develop not only according to plan, but also by ear. Many important components are installed on the circuit boards using Through-hole technology. This way we can ensure that we can use the best sounding components.

The VOLTAiR Technology
The 120V technology is our reference technology. The 120V technology is unique in the world. It operates at a DC voltage of 120 volts. This is four times that of IC-based semiconductor op-amps. In our Professional Fidelity series, we refer to this unsurpassed technology as VOLTAiR technology.

The highest possible audio quality requires the highest possible audio operating voltage.
The 120V technology works with +/-60 V. To be able to handle such a high voltage, we have developed special proprietary operational amplifiers that can operate with a DC voltage of +/-60 V: the SPL 120V SUPRA operational amplifiers. This high voltage would destroy conventional components and operational amplifiers.

The 120V technology achieves exceptional technical specifications and sonic benefits. Technically, in terms of dynamic range, signal-to-noise ratio and headroom. Sonically, in terms of richness of detail and an absolutely relaxed listening experience. 

By the way, the “120V” in the name of the technology has nothing to do with the local mains voltage from the mains power socket. This is about the operating voltage inside the device with which the audio signals are processed.

The mains voltage from the mains power socket is transformed to the required secondary voltage in the device’s internal linear power supply with toroidal transformer. Rectifiers convert this AC voltage into DC voltage required in the audio device.

VOLTAiR is a composition of the terms Volt and Air. Volt is the unit for electrical voltage and Air stands for the unlimited space the music can breathe in.

VOLTAiR symbolizes the perceived limitless dynamics resulting from high audio voltage.

Specifications

• Maximum input & output gain: 32.5 dB
• Input impedance (RCA): 20 kΩ
• Input impedance (XLR): 20 kΩ
• Output impedance: 75 Ω
• Common mode rejection (XLR): 82 dBu
• Frequency range (-3 dB): 10 Hz – 100 kHz
• Crosstalk (1 kHz): -70 dB
• THD (0 dBu, 1 kHz, MID-Hi filter on): 0.0008 %
• THD (0 dBu, 30 Hz, LOW filter on): 0.0009 %
• Noise (A-weighted, MID-HI output): -106 dBu
• Noise (A-weighted, LOW output): -105 dBu
• Dynamic range (MID-HI output): 138 dB
• Dynamic range (LOW output): 137 dB

Internal Linear Power Supply with Shielded Toroidal Transformer

• Operating voltage for analog audio: +/-60 V
• Operating voltage for relays and LEDs: +12 V

Mains Power Supply

• Mains voltage (selectable, see fuse chamber): 230 V AC / 50; 115 V AC / 60 Hz
• Fuse for 230 V: T 0.5 A
• Fuse for 115 V: T 1 A
• Power consumption: max. 50 VA
• Stand-by power consumption: < 0.3 W

Dimensions & Weight

• W x H x D (width x height incl. feet x depth)
  
  • 278 x 100 x 300 mm
  • 11 x 4 x 11.81 inch
• Unit weight
  
  • 4.6 kg
  • 10,14 lbs
• Shipping weight (incl. packaging)
  
  • 5.85 kg
  • 12,9 lbs