Linkwitz-Riley 2-Way Active Crossover, Fully Assembled [XOVER-2]

$ 49⁹⁵

Notice to our customers: Due to ongoing supply line issues, we currently have a back-log of about 1 week. We will process orders in the order they come in. We apologize for the inconvenience. Thank you, Xkitz

Bi-Amping your speakers is the single most powerful, low cost, and simplest way for audio enthusiasts to reach the realm of true audiophile quality.

The XOVER-2 is a board level product ~ but if you're looking for a fully integrated plug-n-play active crossover, check out the K231 Stereo 3-Way Active Crossover

2-way Active Crossover - Splits the highs and lows for separate woofer and tweeter amplifiers
Audiophile grade Burr-Brown op amps, OPA1654 with 0.00005% THD+N
Uses high precision filter components for ultra low distortion and pinpoint XO frequency:

Metal film resistors with 1% and 0.1% precision
Metalized Polypropylene Film capacitors with 2% precision

All Analog Design
High quality Linkwitz-Riley crossover, Constant Voltage, 4th order, 24dB/Octave
The crossover frequency configuration components are located on a single socketed module – it’s very quick and easy to change the XO frequency by simply plugging in a new module
We offer a wide range of standard XO frequency modules. Simply select your desired XO frequency from the list below and specify it in the 'Special Instructions' box on the shopping cart page.
Supports Baffle Step Compensation (BSC). The BSC gain is adjustable and the frequency is configurable to support various baffle sizes
The high and low outputs are phase aligned to within a fraction of a degree to eliminate distortion at and around the XO frequency
Separate bass and treble output gain adjustments via precision multi-turn pots
Double filtered LDO voltage regulator for ultra clean audio
This is a mono device, two boards are needed for stereo operation
Made in USA

Specifications:

THD: 0.0032%
THD+N: 0.0086%
Frequency Response Linear from 10Hz – 80KHz
Input Impedance 20K ohms
Input Overload: 3.8V peak-to-peak
Voltage Gain: Adjustable, Max 0dB
Filter Topology: Linkwitz-Riley, 4th Order, 24dB/octave
In/Out Jacks: RCA for unbalanced or balanced
PCB Dimensions: 3.5” x 2” x 0.65” high (89mm x 51mm x 17mm)
Power supply:

10V–24V DC
100mA current consumption
Single positive DC rail - no negative supply required

We support the following Crossover frequencies:

Any multiple of 10Hz from 30Hz-200Hz (e.g. 60Hz, 70Hz, ... 200Hz)
250Hz
Any multiple of 100Hz from 300Hz-4000Hz
Any multiple of 500Hz from 4500Hz-12000Hz

Important: When ordering, please specify your desired crossover frequency in the 'Special Instructions' box on the shopping cart page. Or we will ship with default XO frequency of 2000Hz.

Preview the Instruction Manual

The XOVER-2 comes with 1 XO Module. Additional XO Modules are available here

Or use our simple Linkwitz-Riley calculator to select any custom XO frequency

If you want to learn about active crossovers and why you definitely need to dump your passive crossovers ~ please read our post about the advantages of Active Bi-Amping

What is Bi-Amping? It is the replacement of your speaker’s passive crossover, a source of audible distortion of your sound, with a precise Active Crossover placed ahead of your power amps. The power amplifiers drive the woofer and tweeter directly with no passive components getting in the way. The result is nothing short of breathtaking. You’ll hear detail and color in your music you’ve never heard before. The sound stage opens wide in all dimensions, and you can picture every instrument as if it was in the room with you.

One of the most important specs for an active crossover is phase coherence. This is the alignment in time of the high and low outputs. If these are out of phase, sounds that are at or near the crossover frequency will be significantly distorted, because both the woofer and tweeter are both driving at this frequency, and if the channels are out of phase they will each be creating slightly different sound, which creates distortion. This video shows how precisely our channel phases are aligned:

First impressions

The speaker setup of my audio installation consist of two older Magnepans MG-12 flat panels as “main” front speakers, accompanied with two sealed subwoofer enclosures. Maggies and subwoofers are controlled by a bi-amp with four lateral mosfet amps. Specs of the 8 inch SB-acoustics subwoofer in a sealed enclosure in combination with the Maggies lead to an ideal X-over frequency of 160Hz.
So I ordered a pair of Xkitz 2-way active crossover modules to be mounted in a separate X-over enclosure with a stabilised PSU and mute circuit.
Based on subjective hearing impressions I raised the bass output 4dB above the mid-height’s.
After finishing the X-over I performed several listen sessions with my favourite classical and jazz albums. I noticed:
-,Complete silence when no signal is present.
-,Remarkable clarity of voices in opera albums and definition of solo-piano jazz albums, in particularly in 24 bit, 192KHz recordings.
-,Excellent definition of cymbals, upper percussion and other high frequency instruments.
-,Good measured and “on-ear” roll offs around the X-over frequency.

So overall; I’m very satisfied with build/construction and in particular the sound quality of the X-overs. Only one remark; For a construction in a separate X-over enclosure I would have preferred terminal connections at the output signals instead of RCA-connectors.

Marnix Morsink
The Netherlands.

Best crossover I've heard

A very quiet, musical and clean sounding crossover. The boards are small and easy to deal with.

I plan to add these to an existing amp chassis and have an amp with a built in high quality crossover.

Highly recommended.

First class performance and simple to set up.

BACKGROUND
I bought a pair of Xkitz 2 way active crossover modules from an SNA seller but managed to destroy a bunch of SMD components by dropping a blob of solder on the power section. But I did have time to notice that they appeared to be well made.

MY SYSTEM
My speaker system is a hybrid ER Audio mini ESL with Satori 6.5 inch MW16P-8 mid/woofers in a ported SB Acoustics ARA enclosure kit without a tweeter or crossover. The tweeter opening of the enclosure has been blanked off.

Amp is an integrated bi-amped Hypex nCore amps with StereoCoffee LDR preamp boards and on board Xlinks active 2 way crossovers.

BASS REQUIRED ATTENUATION
The Satoris and ES panel are a difficult match because of sensitivity mismatch causing the mid/bass requiring a lot of attenuation.

Because of the StereoCoffee/Hypex/ESL purity I didn't want to mess with AD/DA affecting the signal by using a digital crossover for a fraction of the cost to build a passive version.

Baffle Step errors can also be corrected.

NOTE: Bass and ESL levels were finally balance by ear today but there was a small but noticeable intrusion of bass into female voices at the 300hZ crossover point.
I didn't have to adjust the bass or ESL levels. I am delighted with the beautifully balanced sound I am getting now. How easy!

A great improvement to my stereo system

Okay: two boards and two crossover modules, plus an enclosure--for a little over $100 (plus a power supply) I have really improved the clarity of my system. I have the highs going to a VTA ST70 35 wpc channel amp, then to a pair of Horn Shoppe horns. The lows go to an NAD solid state amp then to a couple of homemade subwoofers. The transients--cymbals, sibilants etc.--are crystal clear. Easiest way to hook it up is with short RCA cables inside the enclosure box and female-female RCA panel jacks through the wall of the enclosure. For a power supply I got a linear PS 24 vdc from eBay. All in all, highly recommended.