NTP M-500B VCAs

[[silent:arts]]

I have a few NTP M-500B VCAs, but absolut no information about it. Can anybody help ? pinout, tech. data or schematics ?

any help would be great.

thanks
[silent:arts]

 

[gyraf]

??

Never even heard about them!!

Where are they from?

Jakob E.

 

[[silent:arts]]

[quote author="gyraf"]??
Never even heard about them!!
Where are they from?
Jakob E.[/quote]

They're from the same box like the Neumnann OA10s or NTP M100Cs I have - and there are other nice blue NTP modules (M900 - I think - have to look again). Must have been used in any broadcast aplication.

Will post some pics ...

 

[gyraf]

Could it possibly be a rebranded Neumann VCA101? I never heard of - or can find any information about - NTP VCA's..?

How is the pinout?

Jakob E.

 

[[silent:arts]]

First of all, here is a picture:

on the left side there are two M100Cs, with printed pinout on its side. the others are the M500B VCAs: same housing, same pinout-layout - but only 9 pins instead of 11 (9 & 11 are missing).

[quote author="gyraf"]Could it possibly be a rebranded Neumann VCA101? I never heard of - or can find any information about - NTP VCA's..?

How is the pinout?

Jakob E.[/quote]

the Neumann VCA101 would have 7 pins, the NTP has 9. the dimensions are different. and I don't know about any Neumann non microphone OEM products.

looking forward :grin:
[silent:arts]

 

[[silent:arts]]

... and the NTP M-900 LOG. AMPLIFIER:

any info about this one ? :roll:
again, same housing as M-100 & M-500

thanks
[silent:arts]

 

[[silent:arts]]

Bent Jorgensen from dag2000 answered my mail about this modules:

Here is a data sheet for the M100.
The other modules were never sold as separate items and no "external" documentation is available for those modules.

so no more info :sad:

the datasheet for the M100 is the same I've had (and posted) before, but english language:
http://www.silentarts.de/lab/studiotechnik/ntp/M100_Data-E.pdf

 

[gyraf]

I have been looking also, but I haven't been able to locate any info either..

What units were these modules used in?

Jakob E.

 

[rafafredd]

If anyone has info on those, it would also be nice. I think it´s a balanced line receiver... Discreet? transformer coupled? Input impedance? Don´t know...
Looks like they are mumetal shielded.

pinouts are:

1 input-
2 input +
3 screen/chassis
5 output
6 +V
7 0v
8 -V

There are four of them in a board with four nice lundahl output trannies, LL5008.

Let me know if you think that the pic is too big and I´ll resize it.

 

[[silent:arts]]

Jakob,

What units were these modules used in?

I still don't know. They are unused spare parts. I've checked all NTP schematics I have, and didn't found any using this parts. But they must have been used for something, and I would like to use them :twisted:

rafafredd,
what kind of board is this ?
you have the pinouts, that's more then I have :sad:

 

[rafafredd]

I think this is a four channel output board, probably subgroups, but it´s digitally controlled...

On the schem it says "NTP module, 5k", so I think it´s a balanced line receiver, with an input impedance of 5kohms.

 

[gyraf]

The NTP M510 VCA is used in the fantastic NTP 179-160 compressor:

http://www.gyraf.dk/schematics/NTP_179-160_Compressor.PDF

Jakob E.

 

[moamps]

Hi,

The M500 is used in the VCA module 184-140B which is part of an autofader system with the 185-350 control module (I have the schematics, I can scan it if someone is interested).


Btw, does anyone have 277-400 peakmeter service manual?

Jakob, thanks for 179-160 pdf.

Regards,
Milan

 

[gyraf]

Hi Milan,

Yes please - any NTP information is always very welcome!!

:grin:

Jakob E.

 

[moamps]

Hi,

I placed temporarily a few scanned picture of the 184-140 VCA module datasheet here:
http://i33.photobucket.com/albums/d100/moamps/ntp00.jpg
http://i33.photobucket.com/albums/d100/moamps/ntp01.jpg
http://i33.photobucket.com/albums/d100/moamps/ntp02.jpg
http://i33.photobucket.com/albums/d100/moamps/ntp03.jpg
http://i33.photobucket.com/albums/d100/moamps/ntp04.jpg
http://i33.photobucket.com/albums/d100/moamps/ntp05.jpg
Can someone host them (Jakob?)?

Regards,
Milan

 

[[silent:arts]]

thank you Milan,
your files are hosted as a pdf under:
http://groupdiy.silentarts.net/moamps/184-140.pdf

 

[gyraf]

Thanks, Milan - and Volker..!!

:thumb:

Jakob E.

 

[audiox]

The other modules were never sold as separate items

NTP M-900 log amp module has been used at least in one Tore Seem mixer that I serviced long time ago. It made the log scale of peak programme meter in that mixer. The mixer was also full of M100 op-amps.