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LX-mini Crossover Article
LX-mini Crossover Article
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Old 29th June 2020, 10:51 AM   #721
MarkS is offline MarkS  United Kingdom
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LX-mini Crossover Article
Quote:
Originally Posted by Stanney2017 View Post
Has anyone been able to implement this crossover with the LX mini +2 with suitable adjustments?
A couple of analog Linkwitz sub-woofer ASP boards in a Pluto +2 sub-woofer configuration could be a solution...
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Old 29th June 2020, 04:11 PM   #722
Nelson Pass is offline Nelson Pass  United States
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LX-mini Crossover Article
This board can be adapted to the +2 and S versions without much trouble.

It needs some different RC values and an additional 4 pole low pass filter.

A Class D subwoofer plate amp will take care of the latter.

What appears to be suitable is the following for $95

Yung SD300 300W Class D Subwoofer Plate Amplifier Module No Boost

I tested the smaller version and was surprised at how much value it
offered.

Here are the desired response curves and a MicroCap schematic of
the components that deliver the mid and hi curves for the board.

Attached Images
File Type: gif LX MINI +2 RESP.gif (11.6 KB, 134 views)
File Type: gif lx +2 mid-hi sch.gif (11.9 KB, 137 views)
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Old 29th June 2020, 04:47 PM   #723
wtnh is offline wtnh  United States
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Quote:
Originally Posted by Nelson Pass View Post

What appears to be suitable is the following for $95

Yung SD300 300W Class D Subwoofer Plate Amplifier Module No Boost

I tested the smaller version and was surprised at how much value it
offered.

Ooh - that glue
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Old 29th June 2020, 06:22 PM   #724
Stanney2017 is offline Stanney2017  United Kingdom
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Brilliant, thank you.
I’ll ask about the lx521 in a couple of years.
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Old 29th June 2020, 06:25 PM   #725
ogawas is offline ogawas  United States
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Location: Silicon Valley CA
I purchased the LX mini + 2 (3 way crossover) Nelson Pass Crossover from Frank; stuck in shipping - Germany due to Covid19. I already assembled the dipole box with the Seas woofer from Madisound.

Currently using the DIYStore LX mini crossover I built awhile back. Extremely pleased, but excited to hear the 3 way since another piano player / DIY builder went from 2 way to 3 way. I also play piano, and the piano actually sits between my LX mini...very interested in hearing the first two piano octaves with the piano. I understand the 3 way is marvelous with solo piano, which is what I would like to hear and experience.

I will be putting my existing LX mini crossover analog crossover for sale in the swap meet in the near future (after I get the 3 way crossover).

-stu
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