Sure Electronics New Tripath Board 4*100W class-D Amplifier Board

[pheonix358]

Has any one had a chance to listen to the 4*100W board as yet.

Terry

[7788q]

hi guys,
I'm too busy to visite the forum. I have tested the 4*100W amplifier. It's good enough to use, but some of my friends tell me their 4*100W amplifier is broken because of the short circuit. So I contact the Sure, they told me they had solved the problem. Is there anyone who could prove the news? But from their introduction in Ebay, it seems that they also lower the price. any news about the 4*100W amplifier?

[Mark Allen]

I have shelved my Sure Electronics board although its still working fine. It doesn't hold a candle to the new T.I. class D stuff from Class D Audio in CA. Right out of the box the T.I. board is a mind blower!!

Mark

[justblair]

Originally Posted by 7788q

hi guys,
I'm too busy to visite the forum. I have tested the 4*100W amplifier. It's good enough to use, but some of my friends tell me their 4*100W amplifier is broken because of the short circuit. So I contact the Sure, they told me they had solved the problem. Is there anyone who could prove the news? But from their introduction in Ebay, it seems that they also lower the price. any news about the 4*100W amplifier?

I got my replacement last week. Unfortunately I just tested it about 10 minutes ago.

Credit to them they pack in a lot of magic smoke! Mine just blew on power up.

I was really looking forward to reviewing this amplifier, the sure boards that I have listened to have all been good.

I trust Sure as a company, I know they are working hard to resolve issues and indeed everyone that I have conversed with on this issue has reported what I consider to be good customer service. I just hope they get to the bottom of the problems

[7788q]

Originally Posted by justblair

I got my replacement last week. Unfortunately I just tested it about 10 minutes ago.

Credit to them they pack in a lot of magic smoke! Mine just blew on power up.

I was really looking forward to reviewing this amplifier, the sure boards that I have listened to have all been good.

I trust Sure as a company, I know they are working hard to resolve issues and indeed everyone that I have conversed with on this issue has reported what I consider to be good customer service. I just hope they get to the bottom of the problems

hi, I visited your web and it seems that you are the expert in the amplifier area. Some of your discussion about the amplifiers in you web is very useful and quite good. And you said that:the Sure didn't get to the bottom of the problems. what's your opinion about the "bottom of the problems"? Could you please share your idea with us? it must be useful for us to deal with the problem in the 4*100W amplifer by ourselves. thanks .

[justblair]

Originally Posted by 7788q

hi, I visited your web and it seems that you are the expert in the amplifier area. Some of your discussion about the amplifiers in you web is very useful and quite good. And you said that:the Sure didn't get to the bottom of the problems. what's your opinion about the "bottom of the problems"? Could you please share your idea with us? it must be useful for us to deal with the problem in the 4*100W amplifer by ourselves. thanks .

I dont know why the second amp blew, but one thing that I noticed on the first batch was that an insulating washer was missing on the input diode.

This meant that the heatsinks of the amplifier were going live, not a healthy situation to be in, especially when the lugs of the adjoining amplifier chips are held at ground. Not a design flaw, insulating pads were placed between the diode (to220 package) and the heatsink (the smaller of the two, but touching the larger sink) rather an ommision during manufacture.

As for the latest failure, Sure had on the second sample fitted the washer, so that was not the issue, but I have not had the top off the amp to see if there are any obvious solder bridges etc.

I also have not seen schematics for this amplifier, so its kinda hard to look out for incorrect resitor values or misplaced components.

I may of course just been unlucky, it will be interesting to see if anyone else gets theirs up and running....

[hoka]

I'm still waiting for my replacement, the first one blew for no particular reason.

[cybermeu]

hi !!

it seems that i'm having trouble with mine too ....

i've made a short listening test of 5 minutes a few days ago the amp connected to a 24v supply (battery) ...

the circuit itself started making a 8khz hiss after 3/4 minutes (i thought at first it was in the speakers .... i've disconected them ... it was still there ...)

The pb is that the hiss is so strong that it is perfectly audible ...

some of you have the same pb than me ?

In attachment, all the schematics of the amp if some of you are interested !!

see ya !!!

[HerrBender]

Hi guys,

I got my replacement board for my defective 4*100W last
week. This weekend I had time to test it. It lasted as long as
my 1st 4*100W board. Powered up and it went up in smoke.
Failure.

I'm happy with my two 2*100W Sure amps but this is getting
very silly. Hope customer support will help. Whoa is me.

[pheonix358]

It seems the problem is still there. My 4*100 was powered but I didn't have any music playing. There was noise from one channel, like dirty pot noise then the power supply shut down for 2 seconds, powered up again by itself then the smoke started, not a little smoke either. Had been working for 3 days without a problem. Sure Electronics New Tripath Board tc2000+tp2050 for pics while it was working. Now I have a lot of work to do on what should have been a finished project.

Terry