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Author Topic: Step by step BM HRM build...  (Read 112768 times)
mcinku
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« on: May 22, 2009, 06:02:32 AM »
I thought this would be useful for all of you guys who don't know where to start when you receive your kit... so I'll post my build progress here and show all my mistakes for you to learn from. Cheesy
Let me just say... this is my first D style amp build and let me say something... this is not easy. Hats down to all of you guys who already did this... not to mention Nik and his guys which are doing it all the time.  Smiley


First... mount HW and do the heaters (if you are doing it Marshall style), tough job wiring heaters, it helps to do this outside the chassis  first and then move in... I did it the hard way of course  Sad


EDIT: Some of you were asking where those heater wire go... I attached another photo, this one shows all the pins... Wink

* BM_HRM1.JPG (126.58 KB, 1024x768 - viewed 1986 times.)

* BM_HRM1a.JPG (100.02 KB, 1023x554 - viewed 1791 times.)
« Last Edit: May 26, 2009, 07:56:54 AM by mcinku » Logged
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« Reply #1 on: May 22, 2009, 06:06:52 AM »
2.) Tone stack pots, switches and input jacks... this was very slow process but it was fun (at least for me)

* BM_HRM2.JPG (142.71 KB, 1024x768 - viewed 1988 times.)
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« Reply #2 on: May 22, 2009, 06:09:14 AM »
3.) Relay PS board and the voltage regulator...

* BM_HRM3.JPG (103.22 KB, 1024x768 - viewed 1740 times.)
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« Reply #3 on: May 22, 2009, 06:15:03 AM »
4. Working on the V1, V2 sockets, man I don't know how can Nik and the guys wire that foot switch connector and that switches so nicely (I guess my fingers are to big Smiley )

* BM_HRM4.JPG (120.31 KB, 1024x768 - viewed 1888 times.)
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« Reply #4 on: May 22, 2009, 03:52:13 PM »
5. Relay boards in and wire those up...

* BM_HRM5.JPG (144.82 KB, 1024x768 - viewed 1688 times.)
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« Reply #5 on: May 23, 2009, 07:05:42 AM »
6. I installed rectifier board and wired those power tube sockets. As you can see OT is mounted as well... I still need to wire impedance selector and install the choke...after that main boards are coming in  Wink

* BM_HRM6.JPG (163.83 KB, 1024x768 - viewed 1784 times.)
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« Reply #6 on: May 24, 2009, 11:26:04 AM »
7. Impedance selector and output jacks...

* BM_HRM7.JPG (152.98 KB, 1024x768 - viewed 1645 times.)
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« Reply #7 on: May 24, 2009, 11:28:15 AM »
8. One last overall photo before the main board installation...  Wink

* BM_HRM8.JPG (141.36 KB, 1434x769 - viewed 1715 times.)
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« Reply #8 on: May 25, 2009, 07:38:57 PM »
9. Installed the boards... warning !!! , do the main board first and then power board... I installed the power board first and man was I angry when I had to run those wires to presence pot or to power tubes  Angry
...anyway as you can see I still need to wire V1,V2,V3 sockets
 Wink

* BM_HRM9.JPG (175.76 KB, 1024x768 - viewed 1797 times.)
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« Reply #9 on: May 26, 2009, 02:58:09 PM »
10. V1, V2 and V3 done

* BM_HRM10.JPG (159.63 KB, 1024x768 - viewed 1658 times.)
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« Reply #10 on: May 26, 2009, 02:59:29 PM »
11. ...and finally my PT job   Chair Dance

* BM_HRM11.JPG (177.78 KB, 1024x768 - viewed 1798 times.)
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« Reply #11 on: May 26, 2009, 03:01:23 PM »
12. ...and a few more for the road  Grin

* BM_HRM12.JPG (164.8 KB, 1024x768 - viewed 1541 times.)

* BM_HRM13.JPG (160.17 KB, 1024x768 - viewed 1453 times.)

* BM_HRM14.JPG (181.67 KB, 1024x768 - viewed 1593 times.)
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« Reply #12 on: May 26, 2009, 03:04:49 PM »
Not bad for my third amp build ever, isn't it...and not to mention my first D style, so I'm quite pleased with the outcome.
I'm taking her to my amp tech tomorrow...we'll power that scope and sine generator and see what this baby can do.

All good things must end at one point.
 Tongue


 Grin


 Cool
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« Reply #13 on: May 27, 2009, 07:47:19 AM »
This thread has been a GREAT help.  I am getting nearer to completing my HRM 100 (my first ever build) and will post pix when done.

Thanks again!

Roger
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« Reply #14 on: May 27, 2009, 07:57:38 AM »
Glad to know that documenting this was worth while...

 Smiley
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