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ALK Universal crossover network

The original "ALK Universal" replacement crossover network for the Klipschorn, La Scala and Belle Klipsch as been reimplemented to create an affordable option for nearly any Klipsch based 3-way loudspeaker.

High cost is no longer a reason to turn the clock on your Klipsch back to 1975 with a newly built A or AA "Clone" from other vendors, when you can turn it forward with a modern design!


The Universal Economy

The "CSW"



Now with an improved tweeter filter for a flatter response and a sharper skirt.

An economy network for almost any 3-way loudspeaker.

Note: The option to upgrade the capacitors to other brands is NOT offered. The Cornscala-Wall is an economy network. It represents the best bang-for-the-buck as is. If more performance is desired the ap12-xxx and ap15-xxx sets are suggested. Read more about this

Shipping box: 15 x 12 x 10 Inch. Weight: 11 Lbs.

Estimate shipping cost

The "CSW-450"

Special for the Klipsch LaScala

The CSW-450 has all the features of the CSW but has a 2nd order (12 dB / octave) woofer filter at 450 Hz for improved performance from the Klipsch LaScala. It can also be used with any CornScala implementation that allows a 450 Hz crossover and uses the K33 or K33 clone woofer driver.

Frequently asked and related questions about the original version:

1-Why is this network called the "Universal"?

2-Can I change the woofer / squawker crossover up higher to allow me to replace the K55 driver with a better one since most will only go down to 500 or 800 Hz?

Here's the answer to both questions: Look here

The tap settings list for the original 3619 transformer can be downloaded here (Size: 48K).

ALK Engineering upgrade for the Klipsch Forte I and Forte II balancing network

(The development of the Forte I network was described as it was being done on the Klipsch forum. The design is there for the DIYers)

(The Chorus models are NOT compatible.)

Titanium replacement diaphragms for the Forte tweeter are compatible with the Forte networks. ALK has no opinion about their value. It is your choice if you choose to install them.

The transformer on the stock Forte crossovers will be reused on the new network. After the waiting period and construction of your new network is almost complete I will contact you to remove and return your old networks complete with all the attached cables. The transformer and cables will be removed and transferred to the new networks. This will reduce the time your speakers are out of operation to the time required for shipping. Recycling the transformer saves you $48 in part cost. There is no advantage to trying to save the old network. It becomes quite useless after the changes and will be thrown away.