SKU: 93017314871

SPL Crossover Active Analog 2-way Crossover

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Description

SPL Crossover Active Analog 2-way CrossoverCrossover Finally an analog crossover again 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 to digital in an analog high end playback chain? Our Crossover sets the crossovers anew. Reviews In practice, it is easy to integrate a subwoofer into an existing loudspeaker concept with the Crossover. Flexible, easy to adjust and with a

Crossover

Finally an analog crossover again

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 to digital in an analog high-end playback chain?
Our Crossover sets the crossovers anew.

Reviews

“In practice, it is easy to integrate a subwoofer into an existing loudspeaker concept with the Crossover. Flexible, easy to adjust and with a sound that is undetectable when configured correctly: Respect, SPL!”

Wolfgang Vogel
HIFI-STARS

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).

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.

Source of joy

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.

Everythin under control - 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, 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.

SPECIFICATIONS

Analog Inputs & Output: XLR (balanced) and RCA:

  • 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): 4 Hz – 300 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

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 500 mA
  • 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: 5, kg / 11,02 lbs
  • Shipping weight (incl. packaging): 5.95 kg / 13.12 lbs

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 93017314871

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4.6 ★★★★★
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Amanda
Birmingham, US
★★★★★ 5
A good read
Format: Kindle
A good read, just fluffy cuteness, no antagonism. I like all the characters. It could have used another round of editing however, glanfds being one error that cracked me up, and my personal pet peeve was that the author kept using the word fill instead of feel, which I promise you are not interchangeable haha, but it's definitely better than the majority of books I read on here mistake-wise.
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Reviewed in the United States on November 28, 2024
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Cecy Melero
Waukegan, US
★★★★★ 4
amazing
Format: Kindle
Knot the Bride was a fantastic read! The characters were all amazing and well-developed. It was easy to like them all. Sophia, Luca, Nick, and Gavin were all perfect for each other. It was such a charming story that had me hooked the entire time. I did wish there were POVs from Luca, Nick, and Gavin but it was still an amazing book without it. I am excited to read the next book in the Willowside Omegaverse series! This is definitely a must-read for fans of omegaverse romance!. I received a free copy of this book and am voluntarily leaving a review.
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Reviewed in the United States on April 25, 2025
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Tara
Fort Morgan, US
★★★★★ 3
3 Star Read,
Format: Kindle
This book wasn't bad, but wasn't my cup of tea. It's highly disappointing because the storyline is so original. There is no real conflict or resolution, so the entire thing feels flat. As a lover of omegaverse books, I know there is a ton of variety out there, and ov is really up to the author. But this one is weird. Omegas have multiple scent glands all over their bodies and go into week long heats every month. Alphas have knots in the middle of their shaft instead of the base, and the knot doesn't always swell, no explanation of when or why. It doesn't engage at all when the mouth is in play. I also didn't enjoy the author's writing style. Each paragraph is only 1 or 2 sentences long, and the entire book reads very stacato. The conversations are stiff and unnatural feeling. Everything is very repetitive, both in word choice and in thought. The same thing is repeated 3 or 4 times over a single page, multiple times over. I ended up doing so much skimming. The first 50% of the book is all slow burn, and the last 50% is almost straight mediocre spice. This wouldn't have been all bad if the grammar and spelling errors didn't start at the exact same time. Tongue is repeatedly misspelled in the middle of the spice.
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Reviewed in the United States on September 14, 2024
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Debby & Brian
Lake Worth, US
★★★★★ 5
Cozy Omegaverse
Format: Kindle
This is the true definition of Cozy Omegaverse. LA wedding coordinator meets her pack at the location for a couple’s destination wedding. Low angst because they are scent matched high heat with heats and knots. Everything you love about this genre with very little anxiety. Simply a fun experience to read and a book I will comeback to when I’m in a slump. I simply love reading this book
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Reviewed in the United States on March 19, 2026
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Iputmybookdownforthis
Lexington, US
★★★★★ 4
Cute Omegaverse story
Format: Kindle
3.75 stars and 2 for spice. Adorable Omegaverse story about a wedding planner who has to go to a small town to plan a wedding for a movie star. While there, she meets her pack. This covers her struggles of not living there but trying to keep her relationship going with her 3 Alphas. It's a quick read and cute, so I recommend it for people who like light-hearted RH stories.
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Reviewed in the United States on May 31, 2025

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