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Old 31st January 2011, 02:42 AM   #411
Luke352 is offline Luke352  Australia
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Looks nice.

Does anyone have a link for the enameled wire for making the inductor, I can't find the stuff anywhere on Digikey and I've tried searching other suppliers without luck.
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Old 31st January 2011, 02:47 AM   #412
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Default While you are searching for the enameled wire... use telefone wire

Yes,...the one covered by plastic...works too.

regards,

Carlos
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Old 31st January 2011, 02:49 AM   #413
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Default While you are searching for the enameled wire... use telefone wire

Yes,...the one covered by plastic...works too.

You need some inductance there....and any insulated wire, if coiled, can do the job.

regards,

Carlos
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Old 31st January 2011, 05:21 AM   #414
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Quote:
Originally Posted by Luke352 View Post
Looks nice.

Does anyone have a link for the enameled wire for making the inductor, I can't find the stuff anywhere on Digikey and I've tried searching other suppliers without luck.
Hi Luke

Your in Brisbane right. I got mine from RS Components.
RS Australia | World Leading Distributor of Electronics, Electromechanical and Industrial Components Your search for enamelled wire
Their trade desk is at Archerfield or can order online. Or alternatively you can come round my place and I can give you some I have spare. I may be out of the way though situated between Beaudesert and Browns Plains.

Regards

Simon
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Old 31st January 2011, 06:04 PM   #415
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Default Dx Blame MKIII was produced, assembled and tested

Brazilians asked a higher power version able to operate 2 ohms.

Now 2 beta testers are building....it is the Supercharged retuned....so, not a new amplifier....it is the same having 6 resistances substituted and more output pairs.

regards,

Carlos
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Old 31st January 2011, 07:08 PM   #416
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Default These are my private reserve of boards..i am still building to my family

I have already build 3 units...and there are others to come.

These are my own boards.... special reserve.

regards,

Carlos
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Old 7th February 2011, 09:19 AM   #417
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Default This is a threshold of clipping indicator...it indicates already clipped voltage

that will appear at your Supercharged output when you overdrive it.

Led will have normal brigthness when you reach 156 watts RMS over 8 ohms or twice of that at 4 ohms...the distortion will be around 1 percent when you perceive it on.

Simple, fast to produce and cheap...can be connected into your output terminals or even inside a speaker.

So, the very good idea is to keep it off... when you have clipping you will have high frequency harmonics that may destroy your tweeters..so... adjust your listening level keeping that LED off.

This was made to the Supercharged..when powered by 55 volts supplies..do not use it with higher power amplifiers or you may damage the LED because of overcurrent...works to the Supercharged..was tested...passed!

regards,

Carlos
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Old 7th February 2011, 10:16 AM   #418
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Default To the ones understand latine languages..here you have a video

explaining more details:

YouTube - Clipping threshold indicator

regards,

Carlos
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Old 8th February 2011, 10:50 AM   #419
Luke352 is offline Luke352  Australia
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Quote:
Originally Posted by niss_man View Post
Hi Luke

Your in Brisbane right. I got mine from RS Components.
RS Australia | World Leading Distributor of Electronics, Electromechanical and Industrial Components Your search for enamelled wire
Their trade desk is at Archerfield or can order online. Or alternatively you can come round my place and I can give you some I have spare. I may be out of the way though situated between Beaudesert and Browns Plains.

Regards

Simon
Thanks, I ended up dropping into the local Jaycar yesterday and they had some, I hadn't checked earlier because it didn't come up in there online search. Goes to show sometimes it pays to visit.

Last edited by Luke352; 8th February 2011 at 10:53 AM.
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Old 8th February 2011, 08:30 PM   #420
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Default Boys, please, use heatsinks to both VAS transistors and use

Big transistors in this position.... something alike MJE15032 is fine.

If you want to push above the limits you can increase the Supercharged sensitivity replacing R7.....try 390 ohms.

Was tested full power over 4 ohms speakers, both channels operating into clipping.

Video about this same subject:

http://www.youtube.com/watch?v=LFGn1BFcJLE

regards,

Carlos


URL=http://img543.imageshack.us/i/stillwaitingknobsarrive.jpg/]Click the image to open in full size.[/URL]
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File Type: jpg Heatsinks to VAS.jpg (440.7 KB, 226 views)
File Type: jpg R7...use 390 ohms.jpg (195.2 KB, 78 views)
File Type: jpg Testing both channels driven at 4 ohms.jpg (290.0 KB, 82 views)
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Last edited by destroyer X; 8th February 2011 at 08:34 PM.
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