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Old 8th March 2014, 09:38 PM   #1
azigta is offline azigta  Spain
diyAudio Member
 
Join Date: Oct 2013
Location: Bilbao
Default Circuit for a 2.1 system?

Hi, sorry if I'm posting in the wrong area, I'm new and I don't know where to ask this.

I have just received a good Thomson 2.1 speaker system. The sattelites are 15w and the subwoofer says 15/30w , I suppose that this is according to if you hook up one or both speakers

I'm suppose to connect the satellites to a board placed in the subwoofer and from there control the volume and plug in the signal from an audio source.

I don't have this board so I want to build one. Has anybody got a circuit for this? Oh and I forgot to mention that the speakers are 4 ohm.

Thanks. And excuse me for my English, I'm Spanish xD
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Old 9th March 2014, 03:16 AM   #2
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Join Date: Apr 2010
Location: Coffs Harbour, on the east coast
It would help if we could identify what you have, azigta.
Most small 2.1 systems come with inbuilt amplifiers, like this
Thomson model: Buy Thomson AirPlay and Bluetooth Wireless Speaker | GraysOnline Australia
Do we understand that you have this sort of system but the electronics have been removed?
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Old 9th March 2014, 03:23 AM   #3
azigta is offline azigta  Spain
diyAudio Member
 
Join Date: Oct 2013
Location: Bilbao
Quote:
Originally Posted by Ian Finch View Post
It would help if we could identify what you have, azigta.
Most small 2.1 systems come with inbuilt amplifiers, like this
Thomson model: Buy Thomson AirPlay and Bluetooth Wireless Speaker | GraysOnline Australia
Do we understand that you have this sort of system but the electronics have been removed?
Yes, it hasnīt got any electronics inside :\ Itīs a Thomson AM 1600
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Old 9th March 2014, 04:26 AM   #4
diyAudio Member
 
Join Date: Apr 2010
Location: Coffs Harbour, on the east coast
You will need several items and this will not be a simple project,
though you may think so.
-Power Socket and switch
-Transformer and Power supply + indicator light
-Woofer amplifier kit with controls for roll-off frequency and preset volume.
-Woofer power amplifier
-Stereo power amplifier for satellite speakers with stereo master volume control.
-Sockets to adapt your stereo signal input and satellite speakers.

Your best affordable options will be with Ebay kits which combine the
amplifiers into one board and the finished product will be cheaper
than you can build to any design you may find.
DIY Kits subwoofer 2.1 TDA7377 power amplifier 3 Channel power amp NE5532 pre amp-in Consumer Electronics on Aliexpress.com
__________________
regards
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Old 9th March 2014, 05:02 AM   #5
azigta is offline azigta  Spain
diyAudio Member
 
Join Date: Oct 2013
Location: Bilbao
Quote:
Originally Posted by Ian Finch View Post
You will need several items and this will not be a simple project,
though you may think so.
-Power Socket and switch
-Transformer and Power supply + indicator light
-Woofer amplifier kit with controls for roll-off frequency and preset volume.
-Woofer power amplifier
-Stereo power amplifier for satellite speakers with stereo master volume control.
-Sockets to adapt your stereo signal input and satellite speakers.

Your best affordable options will be with Ebay kits which combine the
amplifiers into one board and the finished product will be cheaper
than you can build to any design you may find.
DIY Kits subwoofer 2.1 TDA7377 power amplifier 3 Channel power amp NE5532 pre amp-in Consumer Electronics on Aliexpress.com
My idea was to build it myself, doing the pcb and soldering the components. Because I already got all the components separately. Is there any printed circuit board that I can transger to a copper board and do it myself?
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Old 9th March 2014, 05:06 AM   #6
azigta is offline azigta  Spain
diyAudio Member
 
Join Date: Oct 2013
Location: Bilbao
Quote:
Originally Posted by Ian Finch View Post
You will need several items and this will not be a simple project,
though you may think so.
-Power Socket and switch
-Transformer and Power supply + indicator light
-Woofer amplifier kit with controls for roll-off frequency and preset volume.
-Woofer power amplifier
-Stereo power amplifier for satellite speakers with stereo master volume control.
-Sockets to adapt your stereo signal input and satellite speakers.

Your best affordable options will be with Ebay kits which combine the
amplifiers into one board and the finished product will be cheaper
than you can build to any design you may find.
DIY Kits subwoofer 2.1 TDA7377 power amplifier 3 Channel power amp NE5532 pre amp-in Consumer Electronics on Aliexpress.com
In fact Iīve just found it here: Circuit power audio amplifier with TDA7377 2.1 – Stereo + Subwoofer 2x 12 Watts + 37 Watts | Xtronic Free Electronic Circuits and Informations

I searched "tda 7377" and This came up. Itīs just what I need. Your aliexpress article helped me a lot xD thanks!
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