Analog Crossover

Was: $3,749.00
Now: $3,185.00
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It is difficult to optimally integrate bass loudspeakers or subwoofers. At present, there are a… More details

It is difficult to optimally integrate bass loudspeakers or subwoofers. At present, there are almost only digital crossovers for this purpose. But who wants to convert back and forth? You don’t need to anymore. Our Crossover sets the crossovers anew.

Crossover Crossing over

Crossing over

The crossover is divided into two section: 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 (Butterworth) to 24 dB (Linkwitz/Riley).

Crossover In phase

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.

Crossover One or Two

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).

Crossover X-over

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 with a 6dB roll-off. This way, no inaudible low frequencies get into the power amplifier, which relieves it a lot.

Crossover Low Cut

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.

Crossover Volume

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.

Crossover VU


The Crossover offers both balanced inputs with XLR sockets and standard inputs with gold-plated RCA sockets.

Crossover Sources

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.

Crossover Low and Mid-hi

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.

Crossover AMP CTL


Practical are the AMP CTL sockets, to which up to four power amplifiers with 12 V trigger inputs can be connected to switch them on and off together with the crossover. The crossover itself can also be switched on by a preamplifier like the Director Mk2 or Phonitor x.

The VOLTAiR Technology

The VOLTAiR Technology

SPL Crossover Screen Show

This video guides you step by step through the Crossover.

Entire Professional Fidelity Series

And in this video we introduce you to the entire Professional Fidelity Series.

Technical Features

Analog Input & Output: XLR (balanced), RCA

Maximum input & output gain:
32.5 dBu
Input impedance (RCA):
20 kΩ
Input impedance (XLR):
20 kΩ
Output impedance:
75 Ω
Common mode rejection (XLR):
-82 dBu
Frequency range (-3 dB):
4 Hz – 300
Crosstalk (1 kHz):
-70 dBu
THD (0 dBu, 1 kHz):
0.008 %
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

Internal Linear Power Supply with Shielded Toroidal Transformer

Operating voltage for analog audio:
+/- 60
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 500 mA
Fuse for 115 V:
T 1 A
Power consumption:
max. 50 VA
Stand-by power consumption:
< 0.3 W

Dimensions & Weight

W: 11" x H: 4" x D: 11.81" (278 x 100 x 300 mm)
11.02 lbs lbs (5 kg)


  • 2-Year Warranty

    two year warranty



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