MTX JH 1200 - diyAudio
Go Back   Home > Forums > General Interest > Car Audio

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 1st August 2011, 12:36 PM   #1
diyAudio Member
 
Join Date: Sep 2006
Default MTX JH 1200

Anyone have info on this amp??

I need to know the value of the following resistors

R62

R63
  Reply With Quote
Old 1st August 2011, 06:42 PM   #2
diyAudio Member
 
Join Date: Sep 2006
Ok i figured out the value of R62 that is a 61. ohm resistor..

Anyone know the value of R63 it connects to the 3rd leg of all the power supply fets..?

And the gate resistors are 100 ohms..
  Reply With Quote
Old 2nd August 2011, 09:30 AM   #3
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
If no one can answer your question, email MTX for the value.
  Reply With Quote
Old 2nd August 2011, 01:10 PM   #4
diyAudio Member
 
Join Date: Sep 2006
I tryed that already and they said they had nothing on the amp since its still in production
  Reply With Quote
Old 2nd August 2011, 01:13 PM   #5
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Does the capacitor connect to a capacitor and the resistor/capacitor are connected across the source legs of each bank of FETs?
  Reply With Quote
Old 2nd August 2011, 01:22 PM   #6
diyAudio Member
 
Join Date: Sep 2006
yes
  Reply With Quote
Old 2nd August 2011, 01:28 PM   #7
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Looking at other (older) MTX amps, it may have been a 10 ohm.
  Reply With Quote
Old 2nd August 2011, 02:06 PM   #8
diyAudio Member
 
Join Date: Sep 2006
The more i look at it the more im thinking its a 61.9 ohm resistor..

There are a total of 12 power supply fets ( 75339P)..

For 6 of them there are 2 61.9 ohm resistors that connect to the source leg.

1 6.19 for 3 of them and 1 61.9 for the other 3..

Then i go over to the other 6 there is only 1 61.9 ohm surface mount for 3 of them and for the other 3 it must be a leaded resistor (61.9 ohms)

Does this sound right to you??
  Reply With Quote
Old 2nd August 2011, 02:30 PM   #9
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Are you referring to the resistor that I thought may be a 10 ohm resistor?

The gate resistors would not be in series with a capacitor and would not be connected to leg 3 of the FETs.

Post a photo of the area. I've never seen one of these so the circuit board designations aren't helping here.

If someone else has one of these, maybe they can help.
  Reply With Quote
Old 2nd August 2011, 02:55 PM   #10
diyAudio Member
 
Join Date: Sep 2006
Yes refering to the resistor you thought was 10 ohms..
Attached Images
File Type: jpg MTX.JPG (353.4 KB, 71 views)
File Type: jpg MTX1.JPG (523.3 KB, 70 views)
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help needed with Lectron JH 50 Amp astro_nut Tubes / Valves 4 14th November 2007 03:10 PM
Mayware / JH Labs tonearm problem Stanislav Analogue Source 12 12th January 2007 06:08 AM
Grace 707 & JH 4 tonearms for parts woody Swap Meet 2 19th December 2005 10:17 PM
lectron jh 60 help---------------- muccax Tubes / Valves 0 24th May 2005 08:20 PM
PASS-YAX2-JH pcb. jazzy Pass Labs 15 6th May 2003 08:24 PM


New To Site? Need Help?

All times are GMT. The time now is 07:47 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2