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LX-mini Crossover Article
LX-mini Crossover Article
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Old 22nd September 2018, 11:23 PM   #111
Nelson Pass is offline Nelson Pass  United States
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LX-mini Crossover Article
Quote:
Originally Posted by mcluxun View Post
Also the chassis has balanced in and out.
Will that be supported by current PCBs?
As mono blocks, yes. One channel is +, the other -
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Old 23rd September 2018, 12:44 AM   #112
dBel84 is offline dBel84  United States
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Quote:
Originally Posted by Nelson Pass View Post
We wanted to make allowances for future projects, including LXmini+2
and triamps and also preamps with 3 inputs, etc.....
Thanks. This makes good sense.
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Old 23rd September 2018, 07:43 AM   #113
magicLX521 is offline magicLX521  Germany
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Default LXmini+2 XO next Sunday at Burning Amp 2018

You may listen to the LXmini+2 (Crossover) next Sunday at Burning Amp festival.
ORION/PLUTO/LX... Users Group • View topic - ASP kit for LXmini & LXmini+2 & LXstudio by magicLX.com


Hope to see you there,
Frank
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Old 23rd September 2018, 08:08 AM   #114
Variac is offline Variac  Costa Rica
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LX-mini Crossover Article
So to get a balanced crossover you would order two full kits and chassis then you just plug them in. The 2 channels in each box combine into a balanced channel,- no switches, jumpers etc.

We added the 3rd pair of RCAs so you if later you want you can add one of the big woofer options to the LXmini
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Last edited by Variac; 23rd September 2018 at 08:11 AM.
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Old 23rd September 2018, 09:27 PM   #115
radule is offline radule  Serbia
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Small of topic but related to j113.
Any body tested j113 to brake down voltage?
I tried to kill one with voltage , but I dont have enough voltage.

With 80Vdc drain -source voltage and 3mA current, they steel working.

Test setup 1kohm base stoper to ground and 330 ohm Rs.
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Old 24th September 2018, 11:36 AM   #116
kbergsson is offline kbergsson  Iceland
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Hi Nelson, I have a pair of Altec 604-8Gs in homemade 620cabs. Have used different crossovers on them. Best crossover was an autoformer crossover that was later modified for my Altec A5s and currently used there ( great result ). It could be fun to do an active xover for the 604s ( and an excuse to build more amps ). Would it make sense to use the lx-mini kit as a base or do you have plans for realeasing a more general 2way active xover kit later?
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Old 24th September 2018, 03:17 PM   #117
Gotflute is offline Gotflute  United States
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Ordered whole kit. Looking forward to using my lxmini with my Gumby DAC.
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Old 24th September 2018, 04:44 PM   #118
tubesguy is offline tubesguy  United States
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Quote:
Originally Posted by needsp View Post
Hi

What are the dimensions of the pcb please?

Paul N
Just arrived here. The board is a 5" x 5" square.
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Old 24th September 2018, 05:28 PM   #119
Nelson Pass is offline Nelson Pass  United States
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LX-mini Crossover Article
Quote:
Originally Posted by kbergsson View Post
Would it make sense to use the lx-mini kit as a base or do you have plans for releasing a more general 2way active xover kit later?
There are plans for a more general crossover.

The LXmini crossover can be stuffed for a variety of loudspeakers.

You have the board and existing schematic, and I have posted a
MicroCap sim file:

www.firstwatt.com/sims/LX_MINI_V1R0.CIR for you to play with.

You can download the Windows demo version of MicroCap from:

Spectrum Software - Micro-Cap 12. Analog simulation, mixed mode simulation, and digital simulation software. SPICE and PSpice(R) compatible circuit simulator.

and alter the values to see the resulting curves.

After installing MicroCap demo, you click on the file and it launches you
into the screen showing the schematic. On the top bar, click on
Analysis, then AC, then Run, and see the result. You can edit the values
right on the screen, and after a little practice you can be doing this on
your own.

Note that the active elements in this sim are VCVS, voltage controlled
voltage sources whose value (gain) is set up as a buffer.

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Old 24th September 2018, 09:58 PM   #120
Joca is offline Joca  Portugal
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Thank you for all. My kit is on its way. Don't have Lxmini speakers but maybe in the future.

The kit is needed for a OB setup with Mark audio 10.3 and Eminence Beta 15".

I need to change the values, however im a complete noob at this. Can you help? What do i have to do first? I think i must decide at what frequency i need to crossover, right?

Thanks
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