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Class D Switching Power Amplifiers and Power D/A conversion

Boombox TA2020 build
Boombox TA2020 build
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Old 10th August 2012, 12:24 PM   #1
Xerxes75 is offline Xerxes75  Netherlands
diyAudio Member
Join Date: Jan 2012
Location: Leersum
Default Boombox TA2024

After building a car amp and car speakers in a old tube radio enclosure (pics)
I decided to make a portable version. Since i don't have speaker design software i went for a speaker kit with reviews so i had some idea of them and some hints of the combination with a TA2020.

The complete set contains:
Ta2024 (modded)
CT218 speaker kit (TB W4-655)
Li-ion battery
Volume pot
Boomboom75 (marmitek bluetooth module)
12 v power/charger
5 v charger (bluetooth module)
switch for switching between bluetooth and 3,5 jack (in case of an empty BT module).

Since i hate painting MDF i use artifical leather and glue
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Last edited by Xerxes75; 11th August 2012 at 08:52 AM. Reason: Error in numbers
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Old 10th August 2012, 11:26 PM   #2
eladmi is offline eladmi  Germany
diyAudio Member
Join Date: Sep 2010
Location: Hannover
Very, very nice! Awesome job!
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Old 11th August 2012, 02:35 AM   #3
kp93300 is offline kp93300  Malaysia
diyAudio Member
Join Date: Mar 2007
Very nice work with the old radio that my dad use to own .
what are the mods for the TA2020 board.?
i think i order the same board but still in the mail.
Any comments on sound ?

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Old 11th August 2012, 09:03 AM   #4
Xerxes75 is offline Xerxes75  Netherlands
diyAudio Member
Join Date: Jan 2012
Location: Leersum
First of all I saw that I made an error in the thread as you maybe saw it is the TA2024 board in the picture and used in this project....the TA2020 is used in a different project.

The mod I did was on the input resistors, I put some 10K res. parallel to them to lower the resistance. This way you can hook up your iPod. An iPod does not operate on line level so you would end up with less volume. On the www you can find lots of info about this mod.
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