Telenordia - TK-23 (Ge-compressor)

pedalnut · Post by **pedalnut** » 27 Oct 2007, 13:18

Does anybody know about this Telenordia germanium compressor?

Besides that it looks neat it seems to be an optical compression circuit with a couple of germanium transistors.

Anybody traced this one?

JHS · Post by **JHS** » 27 Oct 2007, 13:45

Ge-trannies are way noisier compared to Si-types and it make no sense to use them in a compressor. Ge-type distortion is not what I expect from a compressor, IMHO it should be free of any kind of distortion.

JHS

pedalnut · Post by **pedalnut** » 27 Oct 2007, 14:16

JHS wrote:Ge-trannies are way noisier compared to Si-types and it make no sense to use them in a compressor. Ge-type distortion is not what I expect from a compressor, IMHO it should be free of any kind of distortion.

JHS

maybe you are right but this pedal is known to be especially low-noise.
a friend of mine has two of them in his studio and we used them a lot and theres no distortion and no noise.bad thing is he wouldnt give them to me for a trace job.

anybody?

lohstah · Post by **lohstah** » 27 Oct 2007, 15:38

i say talk to your friend to convince him...

JHS · Post by **JHS** » 27 Oct 2007, 16:03

I found the description for the TK-23 compressor on the Telenordia site and there is a wink to their GE-booster too, but no info that there are Ge-trannies in the circuit.

JHS

JHS · Post by **JHS** » 27 Oct 2007, 16:10

No impressum or a tax-no. on the site, no info about the company owner, no comp. registration no.

Really strange

JHS

analogguru · Post by **analogguru** » 27 Oct 2007, 16:23

Whois for http://www.telenordia.de delivers the folowing result:

Domaininhaber:
Stephan Junge
Solmsstr. 26
D-10961 Berlin
Germany

So this is a german guy/company.

When you look at the middle bottom of the picture you will see 2 metal cans.... that are the Germanium transistors .....
You will find the same case in the italian made Vox tonebenders for SFT 337 and SFT 363E.

And I believe that in this case they will be ASY 25..... I also got 200 pcs very cheap some years ago.

analogguru

pedalnut · Post by **pedalnut** » 27 Oct 2007, 17:02

lohstah wrote:i say talk to your friend to convince him...

will try

JHS, i found the imprint and privacy link, also theres a contact info.all there.

JHS wrote:I found the description for the TK-23 compressor on the Telenordia site and there is a wink to their GE-booster too, but no info that there are Ge-trannies in the circuit.

check the main page, they say all pedals are germanium based designs.

analogguru, any idea what this may be?

R.G. · Post by **R.G.** » 27 Oct 2007, 17:26

Then there is always the question of whether the germanium transistors do anything in the circuit...

snail · Post by **snail** » 27 Oct 2007, 17:28

I've allways had this crazy idea (don't know if will work tho) of using GE trannies in an orange squeezer type of design. By itself it is already a pretty warm comp with nice booster capabilities, I want to replace the IC stage for a GE stage somehow

Just me thinking aloud... if I ever succed I may share it with you guys!

snail

pedalnut · Post by **pedalnut** » 27 Oct 2007, 17:36

snail wrote:I've allways had this crazy idea (don't know if will work tho) of using GE trannies in an orange squeezer type of design. By itself it is already a pretty warm comp with nice booster capabilities, I want to replace the IC stage for a GE stage somehow
Just me thinking aloud... if I ever succed I may share it with you guys!

snail

try it. that would be great, you could try the diystompboxes differential amplifier design and make it GE to replace the OP

Isaiah · Post by **Isaiah** » 30 Oct 2007, 17:58

Bump!

Post by **modman** » 31 Oct 2007, 01:39

On the links page there a link to a very biased review of three pedals, more mojo talk but no mention of the germanium in the circuit, and tries to make you stop reading after the introduction

http://www.telenordia.de/articles/guita ... review.pdf

MattHahn · Post by **MattHahn** » 03 Nov 2007, 19:44

Hi Guys!

this is Matthias from Telenordia in Berlin, Germany.
Id like to chime in on this thread here.

-all Telenordias are discrete germanium designs, some si/ge hybrid, some all germanium.All of them are new designs and none are copies of anything.

-yep, the transistors actually do something and no, germanium is not noisier in general nor does it "generally" distort.It is all a question of circuit-design.

-i wouldnt call this review biased, why should it be biased?We have never advertised in this magazine, the guys didnt get money for that and they liked them good enough to buy a couple.

COMPETITION!!!!
the first of you guys that sends me a FULLY CORRECT schematic of the TK-23 gets a free, yep TK-23.

have fun

Matthias Hahn

Telenordia R´n´R Gear
Berlin, Germany

analogguru · Post by **analogguru** » 03 Nov 2007, 20:01

COMPETITION!!!!
the first of you guys that sends me a FULLY CORRECT schematic of the TK-23 gets a free, yep TK-23.

Hmmm, an intersting challenge.....but first: How many people spent EUR 259,-- for this Ge-compressor until now ? I mean, I would need this for my economical calculation.....:

Spend EUR 259,-- for one... trace the schematic... win a second in the competition... would make 129,50 EUR for one unit.

So if I could see a chance to sell both on evilbay each for EUR 150,-- I would earn 40 EUR to trace the unit and draw a schematic.... not so bad.

But when noone is interested I would loose EUR 259,-- and earn nothing.

analogguru

Isaiah · Post by **Isaiah** » 23 Nov 2007, 16:42

Bump!

Dirk_Hendrik · Post by **Dirk_Hendrik** » 23 Nov 2007, 17:03

MattHahn wrote:Hi Guys!

COMPETITION!!!!
the first of you guys that sends me a FULLY CORRECT schematic of the TK-23 gets a free, yep TK-23.

have fun

Matthias Hahn

Telenordia R´n´R Gear
Berlin, Germany

Hello Matthias,
Good to see you here! Don't take offence about some of the remarks that sometimes come by here. Overall theres' a bunch of very nice, but critical, people to be found here.

Competition..??

It may take a while but be prepared to hand over one of your comps one day.

MattHahn · Post by **MattHahn** » 23 Nov 2007, 18:34

Hi!
oh dont worry i havent been pissed or something but its just this general thing that i see each and every day..

People are so polarized and sometimes negative about stuff they really dont know.
Why arent we kind anymore, listen and then judge if it is working for us or not?

Its often that A says "oh this one has three knobs on and its saying drive on one-this must be a tubescreamer", B says "yeah this must be a crappy Tubescreamer" and C chimes in "what an as*****le of a builder"

I just wanted to say that there are ways to make a drive pedal for example that is not a tubescreamer, it is not a necessity to copy existing designs, there are ways to make your own shit if you want to and "KNOW WHAT YOU ARE DOING".

I have found this thread via a customer and friend of mine who is a regular here, i appreciate such sites.I am not afraid that any of you guys copy our designs...if you want to have one and cant afford it/dont want to buy such an "expensive" pedal/ have fun doing your own...enjoy it, no problem with me.

Be friendly, relax and have fun!

seniorLoco · Post by **seniorLoco** » 27 Nov 2007, 02:20

CAN WE NOT HAVE ANOTHER RANGEMASTER CLONE ....Thanks !

Your comp looks pertty cool tho ....i bet yous can do the Roland AS-1 kinda sustain

bajaman · Post by **bajaman** » 27 Nov 2007, 04:09

if you want to have one and cant afford it/dont want to buy such an "expensive" pedal/ have fun doing your own...enjoy it, no problem with me.

A good friendly attitude Matthias - hope your business does well for you

bajaman