8 Channel, 3U NEVE 1073 completed

[sr1200]

Cant say for Dr_J but i have 3 other channels using the same PS and they all work fine, theres something ONLY on that one board that's hosed.

 

[atticmike]

Is this cunt feasible for powering four units? http://de.mouser.com/ProductDetail/Triad-Magnetics/VPT48-1040/?qs=sGAEpiMZZMvwUzoUXIIvyTw34uqMHR%252budyV6EVq1EYo%3d

 

[Dr_J]

Hi!

Smoked 12R (R56) resistor solved!!  ;D

I'm such an El Supidio  !!!! Never though of making such a mistake...
I put one of the filtering caps (C7) wrong in.... must have been late at night and maybe one
beer too much...  ;D
But it survived, swapped it and now the unit is working....

ROCK-ON!

 

[sr1200]

let me know if you get any noise on that channel after using it for a couple hours.  Im still hunting my gremlin.

 

[atticmike]

Any comment on the toroid transformer I've posted?

 

[Ethan]

atticmike,

In the future when posting in this community, choose your words more carefully.  There is no reason to arbitrarily use vulgar, offensive language especially when asking other members for help.

 

[atticmike]

Can anybody at least recommend me the best toroid transformer you can get for this project? (19" 1RU fitting)

Here is a price ascending toroid transformer list from wholesaler I usually buy at:

http://uk.farnell.com/jsp/search/browse.jsp?N=202981+310021410+310056602+310084864+310037695+310072589+310097531+310078485+310007771+310018924+310007772+310113871+310004946+310106853+310037674+310007781+310107395&Ns=P_PRICE_FARNELL_DE%7C0&suppressRedirect=true&locale=de_DE&appliedparametrics=true&getResults=true&originalQueryURL=/jsp/search/browse.jsp%3FN%3D202981%26No%3D0%26getResults%3Dtrue%26appliedparametrics%3Dtrue%26locale%3Dde_DE%26divisionLocale%3Dde_DE%26catalogId%3D%26skipManufacturer%3Dfalse%26skipParametricAttributeId%3D%26prevNValues%3D202981

 

[Whoops]

Is this **** feasible for powering four units? http://de.mouser.com/ProductDetail/Triad-Magnetics/VPT48-1040/?qs=sGAEpiMZZMvwUzoUXIIvyTw34uqMHR%252budyV6EVq1EYo%3d

The transformer YES that will do the work,

the problem will be the power supply, you have to check if the regulators in your power supply can handle the 4 units.

 

[travis]

Any comment on the toroid transformer I've posted?

I think that you could just use two acdc's if you wanted to simplify things a bit and stick with the BOM.  Pretty sure thats what the projects creator uses (one acdc per 2 channels).  you could even put them in a rack case if you want.  That doesnt really answer your question, but its an option.

   

 

[atticmike]

Quoting: "JLM PowerStation Ver. 3 kit is a Linear based universal power supply with can generate 5 voltage rails from a single or dual 15 to 30vac power transformer."

Does it mean you cannot use 50 VAC transformers in combination with that PSU?

 

[andreimusic]

Hi guys!!

I'm trying to make my 1290 clone as close as possible to the original...  as far as the front panel is concerned.

Does anyone has any info where I can get "phantom" and "phase" switch same an on 1073 Neve Dpa?? 

http://www.ams-neve.com/Products/Outboard/1073DPA/1073DPA.aspx


Thanks in advance!!

 

[atticmike]

Will the transformer at 22v secondary voltage, provided by the thread op's bom, now server as a toroid transformer for at least four units?

 

[desol]

Hi guys!!

I'm trying to make my 1290 clone as close as possible to the original...  as far as the front panel is concerned.

Does anyone has any info where I can get "phantom" and "phase" switch same an on 1073 Neve Dpa?? 

http://www.ams-neve.com/Products/Outboard/1073DPA/1073DPA.aspx


Thanks in advance!!

Imo, it's a waste of time. Go with what works and looks fine. YMMV.

Will the transformer at 22v secondary voltage, provided by the thread op's bom, now server as a toroid transformer for at least four units?

http://www.jlmaudio.com/shop/index.php?_a=viewProd&productId=12

 

[atticmike]

Hi guys!!

I'm trying to make my 1290 clone as close as possible to the original...  as far as the front panel is concerned.

Does anyone has any info where I can get "phantom" and "phase" switch same an on 1073 Neve Dpa?? 

http://www.ams-neve.com/Products/Outboard/1073DPA/1073DPA.aspx


Thanks in advance!!

Imo, it's a waste of time. Go with what works and looks fine. YMMV.

Will the transformer at 22v secondary voltage, provided by the thread op's bom, now server as a toroid transformer for at least four units?

http://www.jlmaudio.com/shop/index.php?_a=viewProd&productId=12

so as long as I provide the unit with 1 ampere at 15 to 30 vac secondary voltage I'm fine?

 

[desol]

Yes and no(1 amp)...a 24 volt secondary is fine. 12 + 12 @ ~ 50va.

http://avellindberg.com/transformers/y23_range_specs.htm

1290 wants 300-500ma each, upon powering up. Then settles at 80-100ma.

 

[atticmike]

Yes and no(1 amp)...a 24 volt secondary is fine. 12 + 12 @ ~ 50va.

http://avellindberg.com/transformers/y23_range_specs.htm

1290 wants 300-500ma each, upon powering up. Then settles at 80-100ma.

yeah but with the suggested transformer by the op, I'll have a delicate matter of 22 V... Meaning I've purchased the transformer for nothing?

 

[desol]

It's not a delicate matter at 22vac...as the powerstation will take 15 to 30 vac....but output 24(dc).

It's a matter of power...and for 4 channels, the amveco is fine at 22vac - 50va.

Do you really live in an attic?>

 

[MicDaddy]

Issue with one of my 8 pres.

I have 2x 2RU units of 4pres each.

Intermittent static/spitting from one channel (other 3 in same chassis no symptoms)  It comes and goes, sometimes will be hours before it happens, sometimes it is every 5 minutes.

I'll have power to the pres with no gain applied, it starts spitting like crazy (only the one channel), then no output even with full gain... some time will pass, more spitting and then the channel starts working fine. 

I haven't opened the chassis to poke around.  I've not had to deal with a 2N3055 that has failed or is in failure/failing, is this a typical symptom?

Like I said it happens when the channel is at 0gain, and occurs with the trimmer fully closed.  This leads me to believe it's in the last stage, and the big transistor is what comes to mind.. 

any thoughts appreciated. 

 

[sr1200]

That is the EXACT issue im having with one of mine in my 4 ch 2U unit...  It was the channel i blew the big 1w resistor on by accidentally shorting the 48v.  All other channels are fine... I think my next mouser order will include a 3055 just incase thats the issue...

 

[desol]

Micdaddy...

Got a scope?