Help with speaker protection kit

julcat · 20th January 2010, 11:43 PM

I'm bulding an amplifier so i buy a speaker protection kit it needs 12-0-12 to 15-0-15 volts the transformer has a 12 and a 18 volts out, so could someone explain me how to conect the speaker protection kit to the transformer??

Thanks a lot

Schema.jpg

Transformer.jpg

djk · 21st January 2010, 01:33 AM

I would like to see the schematic before proceeding further.

Andrew Eckhardt · 21st January 2010, 01:52 AM

Looks like they may have left you some spots to put two more diodes for a full bridge. If everything exists as the graphics show then wiring the 12V transformer winding from either 12 to the 0 connnection will get you running half wave. You should inspect those traces around the empty pads and determine how to install the additional diodes and wire for full bridge.

The manufacturer should have made up their minds and either sent you a center tapped transformer or a complete rectifier circuit.

julcat · 21st January 2010, 01:55 AM

I buy these kit form Valab in ebay

Top Quality Speaker Protection Module for Audio DIY - eBay (item 300387316867 end time Feb-14-10 13:06:22 PST)

20th January 2010, 11:43 PM	#1
julcat diyAudio Member Join Date: Sep 2009	Help with speaker protection kit I'm bulding an amplifier so i buy a speaker protection kit it needs 12-0-12 to 15-0-15 volts the transformer has a 12 and a 18 volts out, so could someone explain me how to conect the speaker protection kit to the transformer?? Thanks a lot Schema.jpg Transformer.jpg

21st January 2010, 01:33 AM	#2
djk diyAudio Member Join Date: Feb 2001 Location: USA	I would like to see the schematic before proceeding further. __________________ Candidates for the Darwin Award should not read this author.

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21st January 2010, 01:52 AM	#3
Andrew Eckhardt diyAudio Member Join Date: Nov 2005 Location: PA	Looks like they may have left you some spots to put two more diodes for a full bridge. If everything exists as the graphics show then wiring the 12V transformer winding from either 12 to the 0 connnection will get you running half wave. You should inspect those traces around the empty pads and determine how to install the additional diodes and wire for full bridge. The manufacturer should have made up their minds and either sent you a center tapped transformer or a complete rectifier circuit.

21st January 2010, 01:55 AM	#4
julcat diyAudio Member Join Date: Sep 2009	I buy these kit form Valab in ebay Top Quality Speaker Protection Module for Audio DIY - eBay (item 300387316867 end time Feb-14-10 13:06:22 PST)

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