F5X -- the EUVL Approach - The Build Thread - Page 44 - diyAudio
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Old 19th February 2013, 09:32 PM   #431
NicMac is offline NicMac  Italy
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Quote:
Originally Posted by JBdV View Post
Great job Nic!!!

Did I notice my stickers on some of your FETS (not sure..)
Yes, your FETs contributed significantly to a better matching yield - and to the benefit of everybody
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Old 20th February 2013, 05:19 AM   #432
EUVL is offline EUVL  Europe
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> A tiny construction flaw

No.

You should mount the cradle onto the chassis first without the top plate and the bottom covers.
Once it is tightened and fixed onto the chassis, you then mount the bottom covers, making sure there is a gap between covers and cradle.
Then you put the amp in its final position.
And only then would you loosen the screws and lower the cradle onto the floor to separate it from the chassis.

Of course you can always choose to just leaving the cradle bolted tightly to the chassis.

Mark, correct me if I am wrong.


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Old 20th February 2013, 07:47 AM   #433
NicMac is offline NicMac  Italy
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>You should mount the cradle onto the chassis first without the top plate and the bottom covers.

This is the difficult part. I will get myself a magnetized long-necked screwdriver and hope for the best. In daylight I can actually see the hole where the screw goes so it is possibly doable
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Old 20th February 2013, 10:25 AM   #434
JBdV is offline JBdV  Netherlands
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There are also clips to be put at the end of the screw driver with which you can "connect" the screw to the end of the screw driver.
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Old 20th February 2013, 10:30 AM   #435
EUVL is offline EUVL  Europe
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The screws are not magnetic.
So you have to use what JBdV suggested.




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Old 20th February 2013, 11:51 AM   #436
NicMac is offline NicMac  Italy
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Blue-Tack
I'm not sure where to get spring clip screwdrivers locally and the increased diameter of these is not going to help.
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Old 20th February 2013, 11:57 AM   #437
EUVL is offline EUVL  Europe
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Blue tack also perfect for the job.


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Old 20th February 2013, 12:13 PM   #438
MarkLai is offline MarkLai  Hong Kong
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[There are also clips to be put at the end of the screw driver with which you can "connect" the screw to the end of the screw driver. ]
You may use a little bit of "blue tag" to glue the screw to the screw driver.

BTW, I suggest to do it like this.
Put a paper, say a newspaper, on the table. Put the F5x case on it.
Mark the outline of the case and mark the location of the 4 cradle screw holes on the paper.
Raise the F5X case approx. 5mm on the foots by any means, books/ plywoods.
Put hte 4 Cradle mounting screws inside their holes respectively.
Take away the F5X case.
Put the cradle assembly on the paper with the mounting holes "target" to the markings previousely marked.
Put back the F5x case to "cover" the cradle assy to sit on the "books". This way the back mounting screws will not drop out. Align the Case with the outline markings.
Use a "long" screw driver to tighten the mounting screws. You may need to "search" for the tapped holes a little bit. I sugest to do the back mounting screws first because there is more space.
Take away the books after you managed to tighten all acrews.
Turn the whole case upside down. Turn the 4 "M4 self-lock nut" to the 4 mounting screws to prevent accendential loosen the mounting screws later on.
Do your wirings and listenings etc.
When you are ready, loosen the 4 mounting screws until the cradle assembly just touched the table and unscrew 4-5 turns more (2-2.5mm floating).
Enjoy DIY!
Mark
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Old 20th February 2013, 03:19 PM   #439
EUVL is offline EUVL  Europe
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Thanks Mark.
I know you are busy after CNY.


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Old 20th February 2013, 08:25 PM   #440
NicMac is offline NicMac  Italy
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Blu-Tack and a long screwdriver works a charm...

The amp is finished, done and singing oh so nicely

Where is that pre-amp Patrick?
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