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Multi-Way Conventional loudspeakers with crossovers

LXmini Clone
LXmini Clone
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Old 1st June 2020, 05:52 PM   #1
Jokerbre is offline Jokerbre
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Join Date: Apr 2012
Location: Phaethon
Default LXmini Clone

As proof of the concept, I decided to make a clone of the LXmini speaker.
The results are excellent both audible and measurable.
The drivers I used are Mivoc swm 68 and TC9FD18-08 which in my opinion is a far better driver than Seas FU10RB (H1600-04).
I ordered the Seas L16RN-SL (H1480) waiting to arrive to make the final version.
If someone is an expert in designing parts for a 3D printer, they might be able to contribute to the design by designing the upper part that comes on the tube.
Off axis measurements are 0-22-45.
The microphone I use is Umik-1. It has a horrible feature to bring down the response over 18khz so I don't know the real situation above.
Crossover is terrible minidsp 2x4.
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Old 1st June 2020, 06:17 PM   #2
Ugg10 is offline Ugg10  United Kingdom
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Join Date: Nov 2017
Location: UK
Similar 3D parts are already on thingiverse.

Hifi Speakers Based on the Linkwitz Labs LX Mini by Bathys - Thingiverse
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Old 1st June 2020, 06:29 PM   #3
Jokerbre is offline Jokerbre
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Join Date: Apr 2012
Location: Phaethon
Similar but not for Seas L16RN-SL (H1480).
lxmini_driver_offsets.gif
I have found on web this picture...

Last edited by Jokerbre; 1st June 2020 at 06:31 PM.
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Old 1st June 2020, 06:38 PM   #4
Jokerbre is offline Jokerbre
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Join Date: Apr 2012
Location: Phaethon
The main problem is DSP.
The MiniDsp 2x4 is very bad.
Avoiding ADC conversion would be better as well as internal DAC.
I also tried the MiniDsp curryman DAC oh my god what a disaster.
It's like someone has a pillow in front of the speakers.
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Old 1st June 2020, 09:48 PM   #5
Ugg10 is offline Ugg10  United Kingdom
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Join Date: Nov 2017
Location: UK
If you only have digital sources, this is my solution.

DSP Crossover project
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Old 10th June 2020, 10:11 AM   #6
Metguy2000 is offline Metguy2000  Denmark
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Join Date: May 2020
For my LXMini I purchased a Beocreate unit Beocreate | HiFiBerry with a Raspberry Pi but the power for the FR unit was too little. I am now working with the Zoudio unit zoudio actually 2 pieces in TWS as I plan a LXMini+. Running at soundlevels of 80dB I am getting THD around 0.2-0.3% above 200 Hz from the speaker that is. I plan a post in the Zoudio thread ZOUDIO AIO4CH: 4-channel amplifier with DSP and Bluetooth later.
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