DIY biamp 6-24 crossover

[Nelson Pass]

At long last, I present the DIY Biamp 6-24 Crossover.

Attached is the "owners manual" which contains everything I have to say.

Basically it is a complete stereo biamp crossover which has 6, 12, 18 and
24 dB/octave slopes and filter poles independently adjustable over a
6:1 frequency range.

Quantities of the "Essentials Kit" are ready to ship to the store, and
should be available shortly. It includes the pc board and the selected
Jfets + bias resistors. The part list is complete and everything can be
obtained from Digikey and Mouser. I expect a "completion" kit to also
be offered.

6L6 has been provided with an advance copy to enable one of his
popular build guides, and Mike Rothacher has put together a simulator
for customization.



-

 

[olen]

Thanks Nelson, this will be a perfect complement to a B4 or miniDSP! Once I dial in the slopes and frequencies on the B4 I can build an affordable dedicated x-over. This should also be great compliment to the LXmini to add a sub or two.

Hi Jason, will there be pre-order for the first batch of these boards/kits? If so put me down for 4 channels 🙂

Thanks again,
Olen

 

[Dennis Hui]

Thank you Papa!

 

[Zen Mod]

Baad Papa!!

 

[AmpsRus]

When Papa's gem's drop in the DIY nest like this, I feel like a baby bird with an open beak. :7)


Assume we double up for Balanced operation?

 

[mattking52]

Fantastic news, Nelson. Thanks for the work you did on this!
As you know, I've been waiting [im]patiently for this...

 

[Soundhappy]

Superman is back Thanks Mr.Pass for excellent new available DIY project!

 

[gl]

Nelson, thank you for this enormously useful project.

BTW - there is a minor typo in the BOM; the JFET is given as J114 rather than J113.

Graeme

 

[codyt]

This will be fun - thanks NP!

 

[Rewind]

What a glorious day it is.
Wait, biamp? (counting all my horn channels)
Oh well, back to trying to customize a bunch of LXmini Analog Crossover boards and hope they play nice together.

 

[2 picoDumbs]

Oh yeah.

So awesome

 

[plasnu]

What a day! Thank you, Mr. Pass.

 

[AVWERK]

Excellent news !

It will be interesting to hear how eliminating a 247uf cap string (etc.) on an Apogee Scintilla
and the Divas modded with an analog crossover instead.

 

[mordikai]

sweet! Something good had to come out of 2020.

 

[Rewind]

Can this be used to tri-amp or quad-amp? This is my current setup:
Subwoofer: 30-80 Hz
Midwoofer: 80-440 Hz
Midhorn: 440-2000 Hz
Tweeterhorn: 2000 Hz-20kHz.

 

[planet10]

Can this be used to tri-amp...

You would need 2 units

... or quad-amp?

now 3

dave

 

[Rewind]

Ok, good, thanks. It looked a bit spartan with just one crossover point. I am sure most people will use several together.
I wonder what is the limit of how many boards you can use. Planning on more than four amps.

 

[canute]

Good news - Thank you mr. Pass

 

[AmpsRus]

Assume we double up for Balanced operation?

Guessing similar to LXmini Analog Crossover, 2 are needed for Balanced Operations?

 

[Nelson Pass]

We certainly could cobble up a balanced to single-ended converter and then a
single-ended to balanced converter, as is often done....

About as much circuitry as two crossovers.