Neve 1290 build completed!!

[Whoops]

quick question here,

I'm installing a trim fader in my 1290.

What type of wire should I use?

Should I use 2 conductor shielded cable? if so, does the shield connect  "L" (ex-junper) on the board to the center Pin in the Pot?

thanks

 

[funkymonksf]

I had a couple questions about this project. So I gathering up everything to do a stereo 1290 in a 2U case with gobetweens and just a gain knob. I don't understand how to get a case drilled and etched. I was going to buy the circuit specialist case and then have front panel express make a faceplate, but will it just screw on or is there another panel behind the front panel that needs to be drilled too? And the back panel... So to sum this up I just need some advice on how to get a case drilled and set up for this project. I also would appreciate some advice on a PSU case. Digikey and mouser aren't carrying the case reccomended. Has anyone had problems putting the PSU in the preamp case? Any pictures or reccomendations would be AWESOME! Anyone know a company that will make the case custom?

Thanks,
Brice

 

[funkymonksf]

Anyone?

 

[Whoops]

I don't understand how to get a case drilled and etched

using and electrical drill with a stepped drill, and you can paint it yourself, using car spray paint and then clear varnish

have front panel express make a faceplate, but will it just screw on or is there another panel behind the front panel that needs to be drilled too?

They can make the front panel, this front panel will attach to the rack case

I also would appreciate some advice on a PSU case.

search for Hammond cases, they come in various different sizes

Has anyone had problems putting the PSU in the preamp case?

I had no problems in mine, the pictures is in the last pages of this thread.


your questions don't deal with the 1290 project directly, but are general metalwork questions,
everything you asked has been covered in this forum, I would recommend that you search more in the forum and spend some time reading the various thread, META is a good place to start:

http://www.groupdiy.com/index.php?topic=16013.0

Also if you are doing the 1290 you should read this full thread, thats the best advise I can give

 

[stitch-o]

i had a crackle once, while i was playing around with some ba283 cards...
i founded a hair of cable on output tranie was shorting...
double checking soldering/cabling with magnified glass might help...

this is what I will do when I get them back. (they are popular already and even with a crackle)
Thanks for the tip!

WHoops: I used reg 2 conductor shielded cable following the pdf diagram.
Honestly, I dont use them and I need a new faceplate for mine so I might scrap'em altogether...
...not before doing some A/Bs tho. Im curious as to how much they affect the circuit....

Cheers!

 

[Whoops]

thanks Kambo,
I also followed the pdf diagram.
I'm just not sure where to connect the shield?

Do you remember where did you connected yours?

thanks

 

[funkymonksf]

Hey Whoops,

I really dig your layout. I think I may use that for inspiration. I have been through all the threads. I just am having a hard time grasping how I am going to get this done, looking for some advice/inspiration. Anyway, is there any way you'd post some more photos of your build. I like how you did it a 1u case. That seems more Ideal. Who did your drilling? Any front faceplate pics? And how did you get the measurements and spacings for the gobetweens?


Thanks,
Brice Conrad

 

[kambo]

thanks Kambo,
I also followed the pdf diagram.
I'm just not sure where to connect the shield?

Do you remember where did you connected yours?

thanks

for line in connection ?
there is a 10k resistor, between  r38(18k), and 2x470uf caps(c7/c8).
other leg of the 10k resistor is connected to 0V...
that where i connected my shield to 0V... on trx, other end of the 2n2 (C6).

 

[Whoops]

for line in connection ?
there is a 10k resistor, between  r38(18k), and 2x470uf caps(c7/c8).
other leg of the 10k resistor is connected to 0V...
that where i connected my shield to 0V... on trx, other end of the 2n2 (C6).

For Line in no, I was referring to the trim Pot.

I think it makes it more sense to connect the shield to the other leg of 10K, because as you said it's connected to 0V.
So the 2 conductor wires will go to the L pad and P pad respectively, and the shield to the 10K resistor leg.

Will try that

 

[Whoops]

Hey Whoops,

I really dig your layout. I think I may use that for inspiration. I have been through all the threads. I just am having a hard time grasping how I am going to get this done, looking for some advice/inspiration. Anyway, is there any way you'd post some more photos of your build. I like how you did it a 1u case. That seems more Ideal. Who did your drilling? Any front faceplate pics? And how did you get the measurements and spacings for the gobetweens?


Thanks,
Brice Conrad

Cool that you dig my layout, it works great, sounds great also, and there's no noise in circuit.

I will take some photos and post them, maybe today or tomorrow.
In the photo I posted before the unit was not yet finished.

I did the drilling with a friend of mine, but you can do it yourself, if the front panel and back panel are aluminium they will be really easy to drill, my problem was that my panels were all Metal, so it took a bit longer.
we used an electrical drill, drill press also and a stepped drill (but you don't need the drill press it's just useful)

I measured the space for the go betweens, and hole sizes needed with a Caliper.
maybe Joe Malone has the measurements in JLM website, you can ask him anyway if they are not on the website.

 

[Whoops]

Hey Whoops,
I have been through all the threads. I just am having a hard time grasping how I am going to get this done, looking for some advice/inspiration.

visit the Metalwork Meta page thats a great start:

http://www.groupdiy.com/index.php?topic=15136

also this thread

http://www.groupdiy.com/index.php?topic=985

 

[wolfgang]

Regarding the Pad:

I wired L to the whiper; P to one end of the Pot;
the "outer Leg of the 10K" wired to the other side of the Pot. For this connection i used the shield!

Hope this helps!

Wolfgang

 

[funkymonksf]

I have decided that because I live in an apartment in downtown Seattle I am going to need to comission my case work. I'll probably use FPE for the faceplate and hopefully they can drill the rear plate for XLR And EIC holes. Anyone have success sending the rear panel of a parmetal case to FPE (front panel express)?


Hey Martin,

I was curious if the FPD file you had for the circuit specialist case would work on a par metal? It's a great template to start with!

Does anyone here have FPD or any other files for the rear panel?

 

[snipsnip]

Ive never send my front panels to FPD because of the cost of sending it. They supply panels for a nominal cost.

Just design a back in FPD and send them the back panel if you really must. Seriously though, get a drill and a hole punch (22mm?) and the whole back will be done in 10 mins. Your neightbours cant be that sensitive! 

 

[evilcat]

For the 47 ohm resistance near to the 2N3055 that should be 1W, can it be 1/2W ?
For the 100pF ceramic caps in the 2 driver stage, could they be 180pF ? I forgot to order them and I have spares 180 !!!

Thanks

 

[GorillaToast]

Hi Madriaanse,

Do you stil have EZ1290 boards?
If so what is the price?
couldn't find that in the forum anymore

Annelies

I would like to know the answer to this, too. As well as current pricing and est. lead time for pcbs.

 

[Whoops]

Hi Madriaanse,

Do you stil have EZ1290 boards?
If so what is the price?
couldn't find that in the forum anymore

Annelies

I would like to know the answer to this, too. As well as current pricing and est. lead time for pcbs.

So, you should read this thread.

That question has been answered already numerous time.

 

[funkymonksf]

What kind of cable are you guys using for connecting the psu the rest of the components. I know to use the canare mic cable for the pcb and transformers, xlr, ect, but I see some single wires being used. Can some one give me advice?

 

[snipsnip]

For the 47 ohm resistance near to the 2N3055 that should be 1W, can it be 1/2W ?

Yep. I used 1/2W in mine.

For the 100pF ceramic caps in the 2 driver stage, could they be 180pF ? I forgot to order them and I have spares 180 !!!

Not sure, sorry.

 

[YLab]

Hi, just a quick question regarding the trimmer for madriaanse.

What is the reason of using a 10k resistor instead of a 5k resistor in replacement of the fader-trimmer? Something is telling me that a 5k resistor would simulate a 5k trimmer at max!?

Thanks
Hubert