Rolls SX21 Tiny Two-Way Crossover

Name: Rolls SX21 Tiny Two-Way Crossover
Brand: Rolls
Rating: 4 (5 reviews)

Mono 2-way Crossover with External Power Supply and Output Controls

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Item ID: SX21

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Rolls SX21 Tiny Two-Way Crossover

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Simple Crossover for any Speaker Setup

The SX21 Tiny Two-Way Crossover from Rolls is a conveniently sized option to balanced, pure sound. With a simple 1/4-inch in/out system and four standard crossover controls, you’ll be able to filter out your unwanted frequencies to develop a clean sound free of background noise. Sweetwater sound engineers have found that with an external power supply, this noiseless unit is a cinch to set up — simply connect your unit to your speakers, tweak a few dials, and enjoy your polished output.

Rolls SX21 Tiny Two-Way Crossover Features:

2-way mono crossover unit
Included power adapter
1/4-inch I/O design
50Hz–2.5kHz crossover range
Noise-free operation courtesy of external power supply

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Tech Specs

Number of Channels: 1
Modes: 2-way
Filters: 24 dB/Octave
Crossover Frequencies - Stereo: 50Hz-2.5kHz
Crossover Frequencies - Mono: 50Hz-2.5kHz
Inputs: 1 x 1/4"
Outputs: 2 x 1/4"
Height: 1.5"
Depth: 4.25"
Width: 3.625"
Weight: 1 lb.
Manufacturer Part Number: SX21

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Reviews

3.9

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Allows me to run lows through one effects loop and highs through a different effects loop. (Or either dry, of course.) The controls make it easy to dial in a nice sound, and it is much more convenient to have on a pedalboard than the rack-mount that I used to haul around...

With the help and a lot of time and patience my very knowledgeable advisor Steve W figured out what I needed. I am
Bi-Amping my stereo. As I am using different amps so I could not use the standard crossover between the pre-amp and the 2 amps
Just used what. is essentially a volume control from Shiite audio in front of the second amp for bass (you don't really need a pre-amp for just bass. One of these puppies for each bass line cuts out the mid and high completely at 24 db. A standard eqaulizer runs 12 db - only about 50% attenuation. This sounds much better and orders of magnitude less expensive.

This little device works perfectly on my board as a clean blend for pedals missing that option - running highs through envelope filter and dirt pedals and lows below 100hz straight to an LS-1 gives me full blend and even clean boost flexibility. My one complaint would be input on the wrong side of the box, but it's only aesthetics and this is working for me.

I've owned this crossover for many years. My only issue with it is, you have to watch your input and output volume. If you get too loud it will produce a very annoying ground hum.

Just needed something to help me from schlepping some equipment until I did some much-needed upgrades. Unfortunately, this thing cut out on me repeatedly until I pulled the gains below 50% on I/O's. Almost like the power supply isn't beefy enough when the I/O gains are turned up past 50%. Needless to say, I won't be relying on this unit for any kind of performance gigs. Too unreliable. Other than that, the unit did what it promised to do...it is a neat little x-over for the money...just sad that it isn't built road tough.

See also: Crossovers, Rolls, Rolls PA Crossovers