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lab gruppen driver stage
lab gruppen driver stage
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Old 23rd June 2014, 07:04 AM   #1
andrewlebon is offline andrewlebon  India
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Default lab gruppen driver stage

Hello
greetings can LCR0203 be substituted with NSL32 as LCR0203 is hard to find here its used in input stage as limiter in labgruppen FP2400
warm regards
andrew
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Old 23rd June 2014, 07:39 AM   #2
sajti is offline sajti  Hungary
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Hi,

schematic would be a big help...

Sajti

Last edited by sajti; 23rd June 2014 at 07:44 AM.
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Old 23rd June 2014, 07:57 AM   #3
Walkalone is offline Walkalone  Viet Nam
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Is this circuit 100% clone from Lab Gruppen?
Lab Gruppen have a CCS circuit too complex. They require a auxiliary source. I have a plan make a high power amp, use symmetrical topo like Lab Gruppen, but keep more simple.

// You need mounting bias transistor to output transistors or heatsink.
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Old 23rd June 2014, 01:09 PM   #4
andrewlebon is offline andrewlebon  India
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Hi Walkalone
greetings circuit is 100% LAB Gruppen clone yes bias trs to be put on main heat sink poor audio and vedio quality vedio made by my cheap mobile
warm regards
andrew Video - TinyPic - Free Image Hosting, Photo Sharing & Video Hosting
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Old 23rd June 2014, 02:34 PM   #5
Walkalone is offline Walkalone  Viet Nam
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How about the sound?
I hear some people says Lab Gruppen have better than other professional amp brands.

And price of them are expensive. Swiss made.
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Old 23rd June 2014, 02:37 PM   #6
andrewlebon is offline andrewlebon  India
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LAB-GRUPPEN FP2400 SCH Service Manual free download, schematics, eeprom, repair info for electronics
LINK for downloading schematic
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Old 23rd June 2014, 02:44 PM   #7
andrewlebon is offline andrewlebon  India
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Default lab gruppen driver stage

Sound very clear and natural waiting to pack amp in cabinet for my friends who
work in band
warm regards
andrew
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Old 23rd June 2014, 08:20 PM   #8
sajti is offline sajti  Hungary
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Hi,

You can use NSL32 into the limiter.

Sajti
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Old 20th July 2014, 04:16 AM   #9
andrewlebon is offline andrewlebon  India
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Default MONO AB CLASS LABGRUPPEN

Hello
greetings amp completed LABGRUPPEN mono AB CLASS amp with pcb limter is effective
warm regards
Andrew
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Old 24th July 2014, 04:34 PM   #10
andrewlebon is offline andrewlebon  India
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Default driver stage pcb LABGRUPPEN

DS PCB final
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