Seeking Advice 12V 30-40w stereo amp with bluetooth built in - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 18th July 2014, 05:38 PM   #1
diyAudio Member
Join Date: Feb 2013
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.
  Reply With Quote
Old 25th July 2014, 02:44 PM   #2
diyAudio Member
Join Date: Feb 2013
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?
  Reply With Quote
Old 25th July 2014, 10:37 PM   #3
diyAudio Member
doctormord's Avatar
Join Date: Oct 2007
Interesting construction, im tuned in for your review.

(I wonder why someone would put the power-connector right beside the volume-pot)
  Reply With Quote
Old 13th August 2014, 02:22 PM   #4
diyAudio Member
Join Date: Feb 2013
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.
  Reply With Quote
Old 26th August 2014, 03:38 PM   #5
diyAudio Member
Join Date: Feb 2013
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.
  Reply With Quote
Old 26th August 2014, 03:47 PM   #6
diyAudio Member
Join Date: Feb 2013
Pics attached
Attached Images
File Type: jpg 1.jpg (164.8 KB, 26 views)
File Type: jpg 2.jpg (152.9 KB, 25 views)
  Reply With Quote
Old 26th August 2014, 04:05 PM   #7
diyAudio Member
Join Date: May 2013
Haha wow, that's a pretty ghetto solution. That's just two seperate products strapped together on an experimenting print.
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Seeking troubleshooting advice for my first amp build. GiF Instruments and Amps 13 26th May 2014 10:53 AM
Seeking advice on Tube buffer / pre-amp zman01 Tubes / Valves 58 11th July 2012 04:45 PM
Leak Stereo 30+, Stereo 70 & Delta 70 (UK sale) Tweedle12 Swap Meet 2 13th April 2012 11:32 PM
40W class A push pull amp with JJ 2A3-40w possible? 3nity Tubes / Valves 18 26th May 2010 11:05 PM
12V to +&- 30 to 35VDC SMPS Miniature Nordic Power Supplies 4 7th January 2008 04:38 PM

New To Site? Need Help?

All times are GMT. The time now is 03:13 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2