Dual La2a - [silent:arts] version
-
- Beiträge: 3520
- Registriert: Sa Jun 10, 2006 5:54 pm
- Wohnort: BLN
- Kontaktdaten:
-
- Beiträge: 265
- Registriert: Sa Jun 03, 2006 6:26 pm
- Wohnort: Kölle
- Kontaktdaten:
-
- Beiträge: 3520
- Registriert: Sa Jun 10, 2006 5:54 pm
- Wohnort: BLN
- Kontaktdaten:
some others were good, too. it doesn't need to be "Telefunken".ChuckD hat geschrieben:... I'll have to look for some Telefunkens as well.
you can get bad tubes there too.
I hope to have some time doing measuring with different tubes next week at work.
(would like to have a tube tester ...)
volker
olafmatt hat geschrieben:Strom kann tot machen
-
- Site Admin
- Beiträge: 1692
- Registriert: Sa Mär 18, 2006 2:17 pm
- Wohnort: Viersen (bei Mönchengladbach)
Cool. The Hum-anizer from Lothar arrived today.
Time to contact Brian. Or has anyone used other in/out transformers? Hammond, Jensen(man), ...
What about the Neutrik NTM4 1:4 200R/10K... hmm doesn't make much sense because they don't have any usable output transformers.
Die 4 UTCs gingen gestern auch wieder für 230€ bei ebay weg.
Frank.
Time to contact Brian. Or has anyone used other in/out transformers? Hammond, Jensen(man), ...
What about the Neutrik NTM4 1:4 200R/10K... hmm doesn't make much sense because they don't have any usable output transformers.
Die 4 UTCs gingen gestern auch wieder für 230€ bei ebay weg.
Frank.
-
- Beiträge: 3520
- Registriert: Sa Jun 10, 2006 5:54 pm
- Wohnort: BLN
- Kontaktdaten:
-
- Beiträge: 462
- Registriert: Fr Okt 26, 2007 10:49 pm
- Wohnort: Irvine California US
- Kontaktdaten:
Frank,
I am going to be using other transformers on mine simply since I have some already.
Input = UTC A18
Output = UTC A26
On my Drip version I used :
Input = UTC A24 (backwards)
Output = Triad HS-52
I really like the sound of my Drip unit. So I think the Dual LA2A should turn out good with these transformers too.
You are right Volker the LA2A has plenty of gain and doesn't need the step up. Mine I was think of adding +48 volts to the inputs and using it a pre amp too.
==================
Can you explain the grid stoppers you plan to add in rev2.0 in this thread so I can do the same on my 1.0 boards?
Thanks
-Chuck
(kubi) Edit: Corrected login
I am going to be using other transformers on mine simply since I have some already.
Input = UTC A18
Output = UTC A26
On my Drip version I used :
Input = UTC A24 (backwards)
Output = Triad HS-52
I really like the sound of my Drip unit. So I think the Dual LA2A should turn out good with these transformers too.
You are right Volker the LA2A has plenty of gain and doesn't need the step up. Mine I was think of adding +48 volts to the inputs and using it a pre amp too.
==================
Can you explain the grid stoppers you plan to add in rev2.0 in this thread so I can do the same on my 1.0 boards?
Thanks
-Chuck
(kubi) Edit: Corrected login
-
- Beiträge: 3520
- Registriert: Sa Jun 10, 2006 5:54 pm
- Wohnort: BLN
- Kontaktdaten:
Chuck,ChuckD hat geschrieben:Can you explain the grid stoppers you plan to add in rev2.0 in this thread so I can do the same on my 1.0 boards?
as far as I know the grid stoppers are only needed with Sowter Transformers (and only in the too much gain settings).
you can have a look at the subject here:
http://www.prodigy-pro.com/forum/viewtopic.php?t=21907
volker
olafmatt hat geschrieben:Strom kann tot machen
Hi,
my 2LA2 is near completion. I use Sowter Inputs and Edcor XSM Outputs. Looking at some RMAA frequency response curves it shows a boost of 3dB in the highs starting from about 3000 Hz. I haven´t terminated the output tx so far. Can anyone recommend any value for the resistor? Should I terminate the primary and/or the secondary side? Here the frequency response.
This compressor is a killer.
regards
Bernd
my 2LA2 is near completion. I use Sowter Inputs and Edcor XSM Outputs. Looking at some RMAA frequency response curves it shows a boost of 3dB in the highs starting from about 3000 Hz. I haven´t terminated the output tx so far. Can anyone recommend any value for the resistor? Should I terminate the primary and/or the secondary side? Here the frequency response.
This compressor is a killer.
regards
Bernd
-
- Beiträge: 3520
- Registriert: Sa Jun 10, 2006 5:54 pm
- Wohnort: BLN
- Kontaktdaten: