LASE Aftermarket JRX100 2-Way Passive Crossover - Direct Replacement

Our review of the LASE Aftermarket JRX100 2-Way Passive Crossover finds it to be a focused replacement part for technicians and owners of the JRX-112M and SF12M monitor speakers. The bottom line: this is for anyone who needs a straightforward, drop-in crossover that restores intended frequency separation around the mid/high transition. In this review the single biggest reason to buy is simple compatibility and correct crossover frequency, which helps recover the speaker's original tonal balance without complex setup.

Key Features

• Crossover Frequency: The 1.8 kHz crossover point ensures the woofer and tweeter hand off at the intended frequency for balanced midrange and treble response.
• Two-Way Passive Design: Being a passive network means it requires no external power and installs directly in the speaker cabinet for a clean, maintenance-free solution.
• Form Factor: The compact dimensions make it easy to fit into the JRX-112M or SF12M enclosure without major cabinet modifications.
• Aftermarket Replacement: As a dedicated aftermarket unit, it is intended to match the original function and restore speaker performance after a failed or missing crossover.
• Durable Construction: The solid packaging and fixed components provide a stable electrical connection suited to live sound and monitors that see frequent handling.

Who It's For

The crossover is aimed at audio technicians, venue maintenance staff, and owners of JRX-112M or SF12M monitors who need a ready-made replacement to return a speaker to service quickly. It is especially useful when the original passive network has failed or when rebuilding a cabinet with authentic frequency behavior.

It is not intended for someone seeking to change the speaker's voicing significantly or for DIYers who want to design a custom crossover curve; those users should look at professional crossover design or active processing instead.

Pros & Cons

Pros

• Direct compatibility simplifies replacement and reduces downtime for monitors designed around the JRX100 crossover point.
• Compact size fits typical monitor cabinet layouts without extensive rework.
• Passive construction means no external power or configuration is required.

Cons

• As an aftermarket part, it offers the original fixed crossover point only and does not provide adjustable tuning options.

Specifications

Product	LASE JRX100 2-Way Passive Crossover
Crossover Frequency	1.8 kHz
Compatibility	JRX-112M and SF12M monitor speakers
Dimensions (L x W x D)	5.5 in x 4 in x 3.25 in
Depth	3.25 in
Brand	LASE

Our Verdict

The LASE Aftermarket JRX100 crossover is a practical, cost-effective replacement for users who need to restore the original speaker behavior of JRX-112M or SF12M monitors. With the correct 1.8 kHz handoff and a compact footprint, it delivers reliable performance and good value for repair and maintenance tasks where original passive tuning is desired.

Frequently Asked Questions

Will this fit my JRX-112M cabinet?
Yes, it is specifically designed as an aftermarket replacement compatible with the JRX-112M and will fit typical internal mounting locations.

Does this require any power or setup?
No, this is a passive crossover network and installs directly without external power or electronic configuration.

Can I change the crossover frequency?
No, the unit is fixed at 1.8 kHz and is not adjustable; it is intended to restore the original passive crossover behavior.