Analog Crossover Network: LX Mini XO Kit
This is the Analog Crossover Network: LX Mini XO Kit. To purchase a complete kit or learn more about what the ACN can do for you visit the ACN Complete Kit page.
This LX Mini XO Kit contains the PCB, 16 matched JFETs, 16 matching resistors R13-20, R35-42, and all the other PC board parts mentioned in Nelson's article (Trim potentiometers, resistors and capacitors).
- Printed Circuit Board (BIAMP12ERF-V1R0)
- 16 matched N channel JFETs (Fairchild J113) with matching bias and tweaking resistors
- R13-R20, R35-R42
- All other PC board parts listed in Nelson's article
- ACN Chassis
- Any parts that connect to the chassis
- Power supply
- Dimensions: 5inch x 5inch / 12.5 cm x 12.5 cm
The ACN-basic-kit is a very good package! Super PCB, well matched JFets.
I want to use it as an active 2-way-crossover for my speaker build (not for
the LXmini). All resistors/caps will be changed in the Sallen-Key-filters.
A more universal ACN-Kit (as mentioned from Nelson Pass) could be very
The new DIY-audio-shop is doing a fantastic job! Very fast delivery from the USA
to Germany (below 12 days - including customs).
Well packed and always good infos by email.
Thanks to DIYaudio-team!
Dirk Hoerrmann, Germany
Went together well.
Worked first time.
very nice improvement over the dsp. I now learned more on how to get other crossover and basslift values. I will order another one shortly:)
very nice layout which allows for customization - in my case to build a crossover to go with a Pass SLOB open baffle speaker with a full range driver augmented with a slot-loaded woofer. The crossover allows for a bi-amp arrangement with level and crossover slope matching, as well as tailored EQ for each driver. I am combining this board with a NuTube board for gain. Should make a great combo.
Finaly I received the parts, the German DHL did a bad job and resend the items to USA where they get lost. But diyaudiostore shipped the parts for free, they charged only the shipping. Thanks a lot! Great stuff, now I am fiddling to find the best crossover points for my Speakers.
I used this crossover to replace an op-amp based crossover board and an old SAE parametric equalizer which I had used to feed a speaker system based on vintage JBL pro sound speaker components. The parametric equalizer had been used to boost the low bass a bit and to remove a 2 kHz peak.
Using LTspice, I was able to redesign the notch filter so that it was narrower and not as deep and centred at 2 kHz. No modifications were required to the circuit board, although jumpers were added and components changed. LTspice was also handy in recalculating the crossover component values to get a 800 Hz crossover frequency and to modify the bass equalization. Frequency response tests after building confirmed that the design was accurate.
This crossover does the job with minimal circuitry and can be modified to suit users' needs, which was what I was looking for. So, it can work for speakers other than the LX Mini. Pretty hard to beat for the price, too.
Works as advertised for my LXmini kit from magicLX521. Shipping was fast and parcel arrived (with tax and customs fees added) in Germany. Even in its current state with a cardbox enclosure produces no audible noise. Note that the chepest ebay power supplies from China are a bit noisy but with a brand name power supply (the triad recommended is not available in Europe) it is quiet.
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