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LX-mini Crossover Article
LX-mini Crossover Article
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Old 9th July 2018, 12:54 PM   #11
JOHNNYCR100 is offline JOHNNYCR100  Abu Dhabi
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Default Skunk works

HI ya all,

Do you think Mr. Pass has a plan to integrate 4 suitable amps and the crossover in to one box solution (or kit) such as the ones that are commercial available already???

regards

Johnny
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Old 9th July 2018, 01:12 PM   #12
Bare is offline Bare  Canada
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Requests for "other' speakers ?? It was asked :-)
Can this unit be adapted to Tannoy Golds?
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Old 9th July 2018, 02:11 PM   #13
gdan is offline gdan  Greece
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LX-mini Crossover Article
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).
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Old 9th July 2018, 02:27 PM   #14
Soundhappy is offline Soundhappy  France
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Quote:
Originally Posted by gdan View Post
....Any suggestions for power amplifiers that will drive the LX-mini will be welcome.
If they are running in AB class even better....
This 100 Watt´s can "shake " the woofers. Damping factor 500

AB100 Class AB Power Amplifier

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Old 9th July 2018, 04:18 PM   #15
aoc is offline aoc  Malaysia
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Quote:
Originally Posted by Nag View Post
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.
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Old 9th July 2018, 06:24 PM   #16
Nelson Pass is offline Nelson Pass  United States
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LX-mini Crossover Article
Quote:
Originally Posted by Nag View Post
We will miss papa amps if we built LX-mini because it requires 100W+100W.
We are running full range with 20W+20W.
There is a paragraph in the article which states that we found 25W
on the top to be adequate, leaving only the higher requirement for the
bottom driver.
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Old 9th July 2018, 07:14 PM   #17
Bigun is offline Bigun  Canada
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LX-mini Crossover Article
downloaded and read - just love this style of writing !
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Old 9th July 2018, 07:19 PM   #18
Zen Mod is online now Zen Mod  Serbia
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LX-mini Crossover Article
I like this thumbnail from Store (ACA page)

Click the image to open in full size.
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clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM
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Old 10th July 2018, 04:12 AM   #19
Nag is offline Nag  India
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Quote:
Originally Posted by Nelson Pass View Post
There is a paragraph in the article which states that we found 25W
on the top to be adequate, leaving only the higher requirement for the
bottom driver.
Thanks Nelson, I got it.
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Old 10th July 2018, 07:49 AM   #20
hkminn is offline hkminn  South Korea
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Default 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.
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