Finally, an analog crossover again.


2 Years warranty

Finance example

£700.00 initial 20% deposit then £155.56 per month for 18 months. Other finance terms available. Finance subject to status



Crossing over

The crossover is divided into two sections: The Low section for the bass loudspeaker or subwoofer (mono or stereo) and the Mid-Hi section for the top/main speakers. The crossover frequencies for Low and Mid-Hi can be set individually from 50 Hz to 120 Hz in 6 positions. The Low filter has a slope of 24 dB per octave. The slope of the MID-HI filter can be switched from 12 dB to 24 dB.

In Phase

Audio signals should come from the top speakers and bass loudspeakers or subwoofers in phase.
The crossover offers variable phase control for this purpose. Use the toggle switch to activate the phase control (phase 0° or phase -180°) and use the control to establish simultaneousness. If the phase control is not required, it can be switched off and thus disappears completely from the signal path.

One or two?

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).

On or off?

If you prefer to run the top/main speakers full-range, you can switch off the MID-Hi filter.

Get rid off it

With the Low Cut filter all frequencies below 20 Hz can be filtered out. This way, the power amplifier does not have to amplify inaudible low frequencies and the loudspeaker is relieved.

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.”

Good ol' times

Two mechanical VU meters visualize the input levels for the left and right audio channel. With the VU switch you can optimize the display for different signal levels. The Crossover offers both balanced inputs with XLR sockets and standard inputs with gold-plated RCA sockets.

Low & Mid-Hi

On the output side, the power amplifiers or active loudspeakers as well as bass loudspeakers or subwoofers are connected to the Low & Mid-Hi output sockets by means of balanced XLRs. This means that even long cable runs to e.g. mono power amps placed next to the speaker are possible without the risk of interference.

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 (AMP CTL Out). This is especially useful for connecting power amplifiers. But also the standby mode of the Crossover itself can be switched on and off by a preamplifier, such as the Director Mk2 or the Phonitor x, via AMP CTL (AMP CTL In).

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.

Tech spec

Maximum output level (0 dBFS = max. +15 dBu)

32.5 dBu

Input impedance (RCA)

20 Ω

Input impedance (XLR)

20 Ω

Output impedance

75 Ω

Common mode rejection (XLR)

-82 dBu

Frequency range (-3 dB)

10 Hz – 100 kHz

Crosstalk (1 kHz)

-70 dBu

THD (0 dBu, 1 kHz, MID-Hi filter on)

0.0008 %

THD (0 dBu, 30 Hz, LOW filter on)

0.0014 %

Noise (A-weighted, MID-HI output)

-106 dBu

Noise (A-weighted, LOW output)

-104.9 dBu

Dynamic range (MID-HI output)

138 dB

Dynamic range (LOW output)

136.9 dB

Dimensions 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

5 kg / 11,02 lbs

For more information click here to visit the SPL website


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