LX-mini Crossover Article

Thanks Mr Pass for superb article!
******* Bravo Patron *******

Yummy delicious DIY :yummy: :D
 

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as always ..... BL , centered around 8mA ....... that number being in sweet spot regarding xconductance , associated resistor values and dissipation of part in circuit

however , this one of rare opportunities to toss in whatever you have of Toshiba leftovers (yup- GR and V , too) .... as long you're willing to do some sorting - higher Idss in lower position , lower Idss in upper position in buffer cell ..... and then play with source resistor in lower half , to tidy output node voltage level
 
Last edited:

Nag

Member
2015-12-29 6:12 pm
Hyderbad
Dear Nelson,
Every one has some opinion on LX-mini or open baffle.
We will miss papa amps if we built LX-mini because it requires 100W+100W.
we are running full range with 20W+20W.
So what is your point of view on LX-mini or open baffle with probable FET class AB or chip amps.
It is just some curiosity.
Thanks.
Nag.
 

gdan

Member
Paid Member
2010-09-11 2:01 pm
Athens
Nelson, an excellent article, thank you.

Any suggestions for power amplifiers that will drive the LX-mini will be welcome.
If they are running in AB class even better.
I think 4 amplifiers running in class A, they will provide a lot of heat (and the summers are really hot in Greece).
 

aoc

Member
2006-11-06 3:22 am
Dear Nelson,
Every one has some opinion on LX-mini or open baffle.
We will miss papa amps if we built LX-mini because it requires 100W+100W.
we are running full range with 20W+20W.
So what is your point of view on LX-mini or open baffle with probable FET class AB or chip amps.
It is just some curiosity.
Thanks.
Nag.
I run F6 for the higher frequency driver and a 100W amp for the woofer... Sounds great and I don't think I hit exceeded 20W on the F6 with high volume.
 

hkminn

Member
2007-02-07 6:29 am
seoul
Questions about J113 buffers.

J113s in what range of Idss are usable in the circuit?
In the article Nelson says 8 pairs of jfets draws about 75mA and I guess Idss of each J113 should be more than 9mA. J113 datasheet says min. Idss is 2mA, and I'd like to make it sure.

Another question is when I match jfets, should I match them first and put source resistor(R1)? or should I match jfets with source resistor(R1) in place?

Thank you.