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Old 30th August 2012, 11:19 PM   #531
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Join Date: Jul 2012
Hey guys,

any news on your amps?
New interesting installations?
New hints how to make this phantastic modules better?
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Old 3rd September 2012, 03:16 PM   #532
Olombo is offline Olombo  Germany
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Join Date: Jul 2012
Hi!

I also just recently ordered some of this nice modules. Still waiting for arrive...

One question: I bought them for my mid section and compression drivers. But as I need a new subwoofer amp, too I would like to ask if there is just a nice possibility to mod the modules with some additional mosfets or so. In another thread this was the way they went...

I do not mind about some soldering or simplest routing as long as I have a save wiring diagram ;-)

cheers!
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Old 4th September 2012, 02:18 PM   #533
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Location: INDIA
Default help

I bought one 2092 module from sure electronics from ebay...it features irfi4019 delivers 125 watts at 8ohms ...can I drive it at 4ohms load...can it handle it and is the short circuit protection inbuilt in irs2092 chip???
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Old 4th September 2012, 03:08 PM   #534
MrSlim is offline MrSlim  Canada
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I have L15D's from ljmljm, which use the irf4019 and 2092, and it says it can do 250W into 4 ohms..
If they are using the reference design, your Sure should be the same.
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Old 4th September 2012, 03:21 PM   #535
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Quote:
Originally Posted by MrSlim View Post
I have L15D's from ljmljm, which use the irf4019 and 2092, and it says it can do 250W into 4 ohms..If they are using the reference design, your Sure should be the same.
Have you tested yours with that load???
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Old 4th September 2012, 03:41 PM   #536
exflaco is offline exflaco  Armenia
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Sweerperfume l15d work fine at 4 ohms ,only 45-50 v max rail ,y test it ,no problem
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Old 4th September 2012, 04:19 PM   #537
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Quote:
Originally Posted by exflaco View Post
Sweerperfume l15d work fine at 4 ohms ,only 45-50 v max rail ,y test it ,no problem
What about short circuit protection....they say amp is provided with this protection...is it inbuilt or externally should be done
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Old 4th September 2012, 06:19 PM   #538
MrSlim is offline MrSlim  Canada
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Maybe you should review the reference design doc: http://www.inductor.com/irf/iraudamp7s.pdf
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Old 8th September 2012, 07:19 PM   #539
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i got it...i tested everything and the amp is just awesome...can anyone tell me why are the 1watt resistors heating or they just heat without any reason....when i got the board i tested the oscilating freq it was set to 250 and 280KHZ i set it to 400 and 375KHZ...is this ok...i did it as the ref design specified to be....the resistors which feed the 5.6 volts zeners and the bias transistor heats....what can be the problem or is it normal????????/
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Old 11th September 2012, 01:08 PM   #540
Jogi is online now Jogi  Germany
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I am considering the L15-D mono modules and think about using a transformer with two 38V secondaries and 440Va, just because it is lying in the drawer. Should be o.K for the L15, as it uses lower voltage than L20.
The question is, if I can supply both modules from one +/- supply?
That means transformer--> rectification to ca 53 volt--> +22000f/-22000f--> 2 mono modules. Or do I get groundloops or something like this when not supplying each module by its own supply?

Thanks a lot for advice,

Juergen
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