Seeking Advice 12V 30-40w stereo amp with bluetooth built in - diyAudio
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Old 18th July 2014, 05:38 PM   #1
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Default Seeking Advice 12V 30-40w stereo amp with bluetooth built in

I have been looking high and low for a Class D amp with built in bluetooth that will run off ~12V and output ~2x20W. I know that Arjen Helder (sp?) made some at some time but I cannot seem to find them anymore. I see plenty of wholesale options online, but that is not feasible for me. After much time and frustration, I found this TDA7491 based amp and have been in contact with the seller who has offered to sell me one for $16 (plus shipping). Any advice on this particular amp or other options would be much appreciated.
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Old 25th July 2014, 02:44 PM   #2
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Bump and an update. I ordered the amp in the link and Ill report back with my impressions. Still, no one knows any commercially available 12v amps with Bluetooth integrated?
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Old 25th July 2014, 10:37 PM   #3
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Interesting construction, im tuned in for your review.

(I wonder why someone would put the power-connector right beside the volume-pot)
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Old 13th August 2014, 02:22 PM   #4
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Wow, I'm sorry doctormord. I assumed no one was paying attention to my thread!

The amp has been very much a disappointment. The bluetooth range does not extend beyond 8-10 feet even after I cut the antenna and soldered a copper wire to the base. The seller has been very communicative but not very helpful. He/she said that he/she will send me a TA2020 based bluetooth amp at no cost... I think. The language barrier and extreme time difference have been pretty inhibitive.

I'm still open to any other suggestions people might have on a 2x20W bluetooth incorporated amp.
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Old 26th August 2014, 03:38 PM   #5
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The Supplier has been gracious enough to send me another amp. This one is... interesting, but it works well! The bluetooth range is as expected, ~10M. The layout is a little wonky but he assured me that this is a prototype. There is no pop and it has a nice, sizable 4400 uf, 25v output capacitor.

Ideally, Id prefer something with no whistles and bells (i.e. no LCD, card reader, FM radio, etc) to maximize efficiency and minimize size since I am looking for a strictly battery powered and portable solution. aptX audio would be important as well but Ill take what I can get. Pics below.
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Old 26th August 2014, 03:47 PM   #6
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Pics attached
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Old 26th August 2014, 04:05 PM   #7
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Haha wow, that's a pretty ghetto solution. That's just two seperate products strapped together on an experimenting print.
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