JBL D-AMP with IR2111

Kay · 21st July 2008, 01:52 PM

I find a service manual with a 1000W D-Amp, working with
the IR2111.

http://manuals.harman.com/JBL/HOM/Se...Array%20sm.pdf

1. Unfortunatly I can't read the PDF and I find only the pcb and
a symbol for the IR2111. I can't find the circuit.

2. Has anybody a spice model for the IR2111 or the older
IR2105?

zeonrider · 21st July 2008, 02:18 PM

?
Regards zeoN_Rider

Eva · 21st July 2008, 02:29 PM

As the error message in Acrobat Reader explains, you have to download and install the Traditional Chinese package in order to read these schematics.

Now figure out where are those new JBL designs coming from

JBL is almost dead.

Anyway, I will tell you that it's not worth the effort at all. You won't learn anything useful from these schematics, the whole design is pure junk, it looks a lot like amateur work.

IR2111 is not suitable at all for class D, it has 700ns dead time!! But then again, they use TL07x as comparators

High distortion and por reliability guaranteed! (by JBL)

luka · 21st July 2008, 03:38 PM

Hi

I put download and then cancel for those language and it works without it

Kay · 21st July 2008, 03:59 PM

Thankjs for the answers, specially Eva.

I found a thread on DIYaudio with another circuit from JBL
and understand your opinion.

But I have a non-audio project with the 2111 and I had
to make some experiments.
I asked IRF for Spice and get this answer, maybe
interesting for other people:
For functional simulation may be you can use following
Spice models:
http://www.irf.com/product-info/models/sim/ir2101.zip
http://www.irf.com/product-info/models/sim/ir2102.zip
http://www.irf.com/product-info/models/sim/ir2103.zip
http://www.irf.com/product-info/models/sim/ir2104.zip
http://www.irf.com/product-info/models/sim/ir2106.zip
http://www.irf.com/product-info/models/sim/ir2110.zip
http://www.irf.com/product-info/models/sim/ir2112.zip

p.s.

>Traditional Chinese package
I try it with foxitreader, but it dont' work.

>cancel for those language
don't work with me

luka · 21st July 2008, 04:06 PM

Hi

I've done this with foxit reader and it does work

Kay · 21st July 2008, 09:59 PM

I've solved the problem.
New downloading of the pdf and it works

Tekko · 22nd July 2008, 10:09 AM

Hum IR2111, they must have stole my circuit, i was the first using that crappy gate driver for class d, got huge crossover distortion.

21st July 2008, 01:52 PM	#1
Kay diyAudio Member Join Date: Nov 2001 Location: Osnabrueck (Germany)	JBL D-AMP with IR2111 I find a service manual with a 1000W D-Amp, working with the IR2111. http://manuals.harman.com/JBL/HOM/Se...Array%20sm.pdf 1. Unfortunatly I can't read the PDF and I find only the pcb and a symbol for the IR2111. I can't find the circuit. 2. Has anybody a spice model for the IR2111 or the older IR2105? __________________ best regards Kay

21st July 2008, 02:18 PM	#2
zeonrider diyAudio Member Join Date: Mar 2004 Location: Belgrade RS	Hi! ? Regards zeoN_Rider

21st July 2008, 02:29 PM	#3
Eva diyAudio Member Join Date: Oct 2003 Location: Near the sea	As the error message in Acrobat Reader explains, you have to download and install the Traditional Chinese package in order to read these schematics. Now figure out where are those new JBL designs coming from JBL is almost dead. Anyway, I will tell you that it's not worth the effort at all. You won't learn anything useful from these schematics, the whole design is pure junk, it looks a lot like amateur work. IR2111 is not suitable at all for class D, it has 700ns dead time!! But then again, they use TL07x as comparators High distortion and por reliability guaranteed! (by JBL) __________________ I use to feel like the small child in The Emperor's New Clothes tale

21st July 2008, 03:38 PM	#4
luka diyAudio Member Join Date: Sep 2005 Location: in Slovenia :)	Hi I put download and then cancel for those language and it works without it __________________ home page @ http://www.classdaudio.co.cc @ 24/7 all year long I FEEL SLOVENIA

21st July 2008, 03:59 PM	#5
Kay diyAudio Member Join Date: Nov 2001 Location: Osnabrueck (Germany)	Thankjs for the answers, specially Eva. I found a thread on DIYaudio with another circuit from JBL and understand your opinion. But I have a non-audio project with the 2111 and I had to make some experiments. I asked IRF for Spice and get this answer, maybe interesting for other people: For functional simulation may be you can use following Spice models: http://www.irf.com/product-info/models/sim/ir2101.zip http://www.irf.com/product-info/models/sim/ir2102.zip http://www.irf.com/product-info/models/sim/ir2103.zip http://www.irf.com/product-info/models/sim/ir2104.zip http://www.irf.com/product-info/models/sim/ir2106.zip http://www.irf.com/product-info/models/sim/ir2110.zip http://www.irf.com/product-info/models/sim/ir2112.zip p.s. >Traditional Chinese package I try it with foxitreader, but it dont' work. >cancel for those language don't work with me __________________ best regards Kay


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21st July 2008, 04:06 PM	#6
luka diyAudio Member Join Date: Sep 2005 Location: in Slovenia :)	Hi I've done this with foxit reader and it does work __________________ home page @ http://www.classdaudio.co.cc @ 24/7 all year long I FEEL SLOVENIA

21st July 2008, 09:59 PM	#7
Kay diyAudio Member Join Date: Nov 2001 Location: Osnabrueck (Germany)	I've solved the problem. New downloading of the pdf and it works __________________ best regards Kay

22nd July 2008, 10:09 AM	#8
Tekko diyAudio Member Join Date: Jan 2005	Hum IR2111, they must have stole my circuit, i was the first using that crappy gate driver for class d, got huge crossover distortion.

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