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Old 30th May 2018, 05:05 PM   #1341
doctordata is offline doctordata  Australia
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Quote:
Originally Posted by Wheellessautomotive View Post
So... now its a TDA7498

Nice !


How does it sound compared to the original amp ?


Cheers ,


Rens
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Old 18th June 2018, 12:54 AM   #1342
Wheellessautomotive is offline Wheellessautomotive  United States
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Location: Midwest, kcmo, USA , middle of nowhere
Well to me it sounds great.
The guy that owns it says it sounds wonderful.
He restores musical instruments like my sons cello, so I’ll take his word for it
I expected plenty of noise, because i reused all the original equipment.
But she sounds clean and crisp.
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Old 2nd July 2018, 01:15 AM   #1343
29285 is offline 29285  Europe
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Based on my own TPA3255 pcb design I built a small accu driven PA-system. The ingredients are
-1 pedelec accu 36V/360Wh incl charger and mounting hardware
-1 small behringer mixer UB1202, modified for battery usage
-1 DC-DC-converter delivering +/-12V/6W
-2 TPA3255 mono PBTL power-modules delivering 2x100W/4Ohms
-1 home brewed reverberation module based on spinsemi FX-1
-1 bluetooth receiver module
-1 makpak toolbox
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Old 2nd July 2018, 01:22 AM   #1344
29285 is offline 29285  Europe
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the ingredients
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Old 2nd July 2018, 01:26 AM   #1345
29285 is offline 29285  Europe
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putting things together
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Old 2nd July 2018, 01:33 AM   #1346
29285 is offline 29285  Europe
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The speaker drivers are img-stageline PA6/100. There are 2 pieces in parallel per speaker box resulting in 4 ohms. These tiny enclosures do not expose any significant bass, but reproduce mid- and high-range with excellent power - just ideal as a small and effective voice amp system.
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Old 2nd July 2018, 10:58 AM   #1347
irs20957 is offline irs20957  China
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voltwide, nice job!
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Old 29th July 2018, 04:30 PM   #1348
kenta16807 is offline kenta16807  Sweden
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Join Date: Sep 2005
One of my old (2010) Hypex's stopped playing a few weeks ago...

Never got around to building a box for them...
They've been residing on the floor behind the speakers like this:
Class D Amp Photo Gallery-hypex180hg-jpg

Managed to repair the SMPS thanks to an old post found on the interwebs:
electronicprojectsbuilder.blogspot.com

Although repaired, these were not designed to last (80 caps )

So I better had to build me a couple of backups


Sick of Hypex in general I found this guy:
diygeezer
building an amp with a module designed right here in Sweden

lautsprechershop.de carries the modules in Europe.

Boxes ordered from HiFi2000

Some bits and bobs from Mouser and the parts bin and I'm in business

Left channel playing:
Class D Amp Photo Gallery-anaview_playing-jpg
Class D Amp Photo Gallery-anaview_playing_top-jpg

Right channel still waiting for completion
Class D Amp Photo Gallery-anaview_build-jpg
Class D Amp Photo Gallery-anaview_build_back-jpg

Hmm...why does some of the the pictures look crushed
Attached Images
File Type: jpg Anaview_build.jpg (662.0 KB, 1712 views)
File Type: jpg Anaview_build_back.jpg (158.6 KB, 1700 views)
File Type: jpg Anaview_playing.jpg (142.7 KB, 1639 views)
File Type: jpg Anaview_playing_top.jpg (620.0 KB, 1666 views)
File Type: jpg Hypex180hg.jpg (984.9 KB, 2048 views)
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Old 30th July 2018, 07:26 AM   #1349
Cradle22 is offline Cradle22  Germany
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Hi!

Just finished completing my 7 channel amplifier based on 3 TPA3255 amps and a single channel IRS2092 amp for subwoofer duties. The sub channel also has a volume pot (10K log) connected.

Still missing a two more UPC1237 protection boards, since I have to use two of those modules for the TPA3255, because the UPC1237 modules use a common ground for both channels and the TPA3255 boards are in BTL configuration.

The front will get a new finish since a scratched it here and there during the drilling process.

amp.jpg
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Last edited by Cradle22; 30th July 2018 at 07:30 AM.
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Old 31st July 2018, 10:17 AM   #1350
Baldin is offline Baldin  Denmark
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Hi Cradle22
Nice build.
What SMPS are you using, and is it something you can recommend?
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