Crossover Mk2

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.

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

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).

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.

 

Comparison

Most audio devices work with an internal operating voltage of +/-15 volts and can thus process a maximum input level of +21.5 dBu. If a DAC, for example, has an output level of +22 dBu at 0 dBFS, level peaks of the music material would already cause overloads in the input stage of the device. All components in the audio device often operate at their limits. The result is an unsteady sound that causes stress and faster ear fatigue.

SPL devices with VOLTAiR technology can handle input levels of +32.5 dBu thanks to the higher internal operating voltage of +/- 60 volts – thus offering 12 dB more headroom. All components consequently operate continuously in the optimum operating range. The result is a very pleasant, natural and relaxed sound experience. So you can enjoy your music in every detail.

These diagrams clearly show the superiority of the VOLTAiR technology in comparison to other circuits with lower, common operating voltages.