Harrison Ford Filter Feeler

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jensenmann

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The 8-channel version is in the works, too ;-)
Btw, I sent you a mail a few days ago to your gmx account, but you didn´t reply. Are you still using this account?
 

jensenmann

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Finally I finished my 8 channel unit, after all those years.... Thanks to Rafael, Marc-Allen and Dan for making this project possible!


https://www.directupload.net/file/d/6135/cdul4atd_jpg.htm


https://www.directupload.net/file/d/6135/fiwehraw_jpg.htm

I know, the wiring needs some more TLC, but I have to take it apart again. A pot is broken and needs to be replaced.
 

Mike Havok

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Feb 26, 2017
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Sorr said:
The original Schematic link doeskin work. Where can I get it?

https://web.archive.org/web/20140722133157/http://strangeweatherbrooklyn.com/sales/harrisonfordfilter.jpg
 

coledingo

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Mar 22, 2016
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Am I right in thinking that the switch is two position, so either both filters are engaged or both are bypassed? I'm pretty sure this has been answered I just want to be sure Im understanding it correctly. If so, and I were to not include the switch, I would just have to put three jumpers in instead of the switch?

And does anyone have the BOM? The link on page one seems to be a dead end.
 

j.colt

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Aug 6, 2020
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Washington DC
Correct. The switch is not a true bypass switch and yes it disengages both filters. You can certainly leave the switch out and I seem to recall that a user installed a true bypass switch earlier in the thread.
 

coledingo

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Mar 22, 2016
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Thank you j.colt, I'll be adapting these to 500 series and was looking at jensenmann's wiring of the switch. It left me a bit confused to say the least. This is the first time I'll be adapting a circuit to 500 series and wiring switches just throws me off for some reason. But given how I plan to use these I wont need the switch and could always revisit it later. I also now realize the BOM is written out on the first page, so pardon my ignorance... it was late.
 

andow

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Jan 5, 2015
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Austria
Am I right in thinking that the switch is two position, so either both filters are engaged or both are bypassed? I'm pretty sure this has been answered I just want to be sure Im understanding it correctly. If so, and I were to not include the switch, I would just have to put three jumpers in instead of the switch?

And does anyone have the BOM? The link on page one seems to be a dead end.
You'll need two jumpers to bypass the switch. Here's a pic of my version, I also bypassed the switch and added true bypass. Maybe that helps...
 

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fazeka

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Jun 3, 2004
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Hi all,

I'm having some trouble sourcing the pots from Colin at Audio Maintenance. I don't see the OM-01-028 pots on his site anymore and he hasn't replied to my request if he will be carrying them. Which is OK because I can source them directly from Omeg.

However, it's cost prohibitive to order just the switches from the UK (I'm located in the USA). Unfortunately, I can't find the equivalent of the switch called out in the thread: Audio Maintenance Limited AL-03-001 - 2 Pole Changeover Switch (PCB Mount) - Latching

So... does anyone know if something like a C&K F2UEE would work? It looks like its pins may be close, but not exact wrt the PCB footprint.

Thanks!

Untitled.png
 
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oran.outan

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May 12, 2021
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Location
France
Hi All

I'm going to make that build but I'm a bit confused about the pot!
On the 1st post of this thread it's write : 47k Rev Log pots (from AML) and below there is a BOM where it's write 50k Dual Lin ! So, which one is need !? I mean LIN or Rev LOG ?
Also seems like the Omeg 47k is not anymore on the AML catalog... i can't check there for get info... If you have any tips or model references to get one closer it's welcome...

thanks
F
 
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kazper

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Snohomish, WA USA

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