[BUILD] 1176LN Rev D DIY

[jandoste]

Hi Guys,
I have a question, I received three 2K trimmer potentiometer and I see three 2K trimmer potentiometer in the list of MNAT 1176LN REV D!
but missing fourth? may I'm wrong? you have an idea ?hank you for the reply

best,

 

[California Road]

Hi Guys,
I have a question, I received three 2K trimmer potentiometer and I see three 2K trimmer potentiometer in the list of MNAT 1176LN REV D!
but missing fourth? may I'm wrong? you have an idea ?hank you for the reply

best,

If it is a hairball kit, 0 set is mounted on the front panel and not the pcb.  (mouser part 53C22K)

Josh

 

[Echo North]

Yes the zero adjust is a pot in my BOM.

You may know this, but just so you avoid mistake, don't put the trimmers in the PCB the way you have it circled if they are from my kit.  They go across the bottom pads.  Refer to the schematic for clarity.

See here:
http://mnats.net/images/1176_rev_a_med.jpg

Mike

 

[jandoste]

Yes the zero adjust is a pot in my BOM.

You may know this, but just so you avoid mistake,
don't put the trimmers in the PCB the way you have it circled if they are from my kit.  They go across the bottom pads.

Yes I see that Thanks ! So I don't need the  fourth trimmer ?

See here:
http://mnats.net/images/1176_rev_a_med.jpg
Mike

Thanks again Mike
Best,

 

[Echo North]

Yes the zero adjust is a pot in my BOM.

You may know this, but just so you avoid mistake,
don't put the trimmers in the PCB the way you have it circled if they are from my kit.  They go across the bottom pads.

Yes I see that Thanks ! So I don't need the  fourth trimmer ?

See here:
http://mnats.net/images/1176_rev_a_med.jpg
Mike

Thanks again Mike
Best,

You need the 4th trimmer.

It's just not a PCB mount.  It's a 2K pot mounted to the frontpanel zero adjust.  You need to run three wires to the 0 adjust pads on the PCB.

Mike

 

[jandoste]

Yes the zero adjust is a pot in my BOM.

You may know this, but just so you avoid mistake,
don't put the trimmers in the PCB the way you have it circled if they are from my kit.  They go across the bottom pads.

Yes I see that Thanks ! So I don't need the  fourth trimmer ?

See here:
http://mnats.net/images/1176_rev_a_med.jpg
Mike

Thanks again Mike
Best,

You need the 4th trimmer.

It's just not a PCB mount.  It's a 2K pot mounted to the frontpanel zero adjust.  You need to run three wires to the 0 adjust pads on the PCB.

Mike

Ok , Thanks ! now I see ! sorry my (stupid) questions but I got an idea and I have to finish that !
but just I can solder them  in any hole of the R44? I mean if I solder them like this ; first to first , second to second etc ?

Thanks Mike
Best,
PS : Sorry Mike but I think my lastest questions

 

[Philo]

The trimmers need to go across the short end of the "T" (which has only three holes).  Which way they are installed only makes a difference in which way you need to turn them, but I would install them with the same orientation that MNATS uses in the link.  It looks like the blue one (100 Ohm?) already installed in your photo is installed the wrong way.

Philo

 

[ilfungo]

sorry I still do the same question...
I realized 6x1176  with hairball kits and i am very happy!!!
I would build a REV D OEP in out

somebody tell me if it is possible?
thanks

somebody can help me?

 

[jandoste]

The trimmers need to go across the short end of the "T" (which has only three holes).  Which way they are installed only makes a difference in which way you need to turn them, but I would install them with the same orientation that MNATS uses in the link.  It looks like the blue one (100 Ohm?) already installed in your photo is installed the wrong way.

Philo

Hi Philo,
Thanks ! I have already changed it !

 

[jandoste]

Hi All,
Where can I solder them? any idea?
Thanks

 

[Echo North]

Hi All,
Where can I solder them? any idea?
Thanks

The zero adjust pot? 

To the zero adj trimmer pads.  Wiper in the middle and end lugs to either side.

Mike

 

[jandoste]

Hi All,
Where can I solder them? any idea?
Thanks

The zero adjust pot? 

To the zero adj trimmer pads.  Wiper in the middle and end lugs to either side.

Mike

No , that's the Attack pot.

 

[Echo North]

http://www.groupdiy.com/index.php?topic=29981.msg492206#msg492206

 

[Futureman]

Thats the bypass switch.

The centre lug goes to PCB pad 22
The "On" position (ie, when you engage compression) goes to The Ratio Board "Ratio GRN"
The "Off" position (ie, the attack knob fully counter clockwise = No compression) goes to PCB GND & Ratio board "BLK"

 

[jandoste]

Thats the bypass switch.

The centre lug goes to PCB pad 22
The "On" position (ie, when you engage compression) goes to The Ratio Board "Ratio GRN"
The "Off" position (ie, the attack knob fully counter clockwise = No compression) goes to PCB GND & Ratio board "BLK"

Thanks Mike,
Thanks Futureman,

 

[jandoste]

I think my last question ! on the ratio board I don't have "REL" but I got "18" so , in place of "REL" I solder the wire to "18" ?
Thanks,

PS : I know the picture was REV A but the Ratio BPC is same...

 

[Futureman]

This may help also.

See attached PDF.

The original 1176 schematics are great also.

 

[jandoste]

This may help also.

wowwwwwwwwwww Thanks Futureman
Great !!!
Best from here !!!

 

[jandoste]

I think my last question ! on the ratio board I don't have "REL" but I got "18" so , in place of "REL" I solder the wire to "18" ?
Thanks,

PS : I know the picture was REV A but the Ratio BPC is same...

I realy cannot find any solution for this! on the ratio board I don't have "REL" but I got "18" so , in place of "REL" I solder the wire to "18" ?
Thanks,

 

[California Road]

That is correct.  I have seen the ratio boards screened with both REL and 18, but they are the same.

Josh