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Old 10th March 2013, 09:09 PM   #621
Falck is offline Falck  Sweden
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Default Tram2 plays Good Music!

Hi all,

At last I have solved the problem with my Tram2. The jumper on my FCUPS V2 were in the wrong position according to the manual for the FCUPS but not according to the manual V1.36 for Tram.
Now it plays music really well!

Best Regards
Mats
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Old 13th March 2013, 09:18 AM   #622
Desmo is offline Desmo  Denmark
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Great news that you got it sorted Mats..! And enjoy the wonderful preamp
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Old 13th March 2013, 09:21 AM   #623
Desmo is offline Desmo  Denmark
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Quote:
Originally Posted by rab28 View Post
indeed, it seems I am the owner of possibly the very last Tram2 (as we know it today) to be sold by DIYaudioSupply... it seems they can't get the HV supply modules and more and the known replacements are too large to fit in the chassis...
Welcome and congratulations on your new preamp This is very interesting information, did they tell you this from diyhifisupply, or..!? So maybe the Tram II is about to get a replacement of some sort...
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Old 13th March 2013, 09:24 AM   #624
Desmo is offline Desmo  Denmark
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Originally Posted by ptashton View Post
Maybe Hugh can give his opinion as he is getting the Philips 5R4GYS and he is now listening to my GEC U52 tube.
This is interesting, please let us hear your opinion Hugh..!?

Speaking of rectifiers I have now received the Brimar 5r4gy from the 1950's, but have not really had the time for comparison with the Philips yet. Initial impression of the Brimar is very, very good though...
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Old 13th March 2013, 05:25 PM   #625
sjs is offline sjs  United Kingdom
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I have a Tram2 with the v3 filament supply modules DIYHFS Ultra Low Noise Filament Supply (Rev 3) 2-12V or 12-24v DC jumper selectable (Pair) | DIY HiFi Supply

In the manual for these modules it clearly states:
"Note: there must be no cap or humpot across tube socket. This will defeat the sound as music signal will be shorted or shunted away from the output circuit."

However in the Tram2 there is a 33,000uF Nichicon cap across the output of each module and a 22uF film cap across the filament pins on the valve base.

I am guessing they are present to reduce noise levels, but has anybody tried their Tram2 without these caps?

thanks
Simon
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Old 17th March 2013, 10:56 AM   #626
kazap is offline kazap  Australia
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Originally Posted by sjs View Post
....has anybody tried their Tram2 without these caps?
Hi Simon -I know the thread is really long so heres Morten's advice from earlier you might have missed about the caps across the filamnt pins.
"You MUST remove the capacitors on the the filament pins, otherwise they will both color the sound and work as filters that alter the freq response. With those caps in place I understand why you heard a mellow bass, basically the cut off the bass range when used with the Rod Coleman regs. " .... "That helped, more air around the instruments"

Maybe one of the experts here can say something about the
"
33,000uF Nichicon cap across the output of each module"?

Last edited by kazap; 17th March 2013 at 11:03 AM.
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Old 17th March 2013, 11:04 AM   #627
Desmo is offline Desmo  Denmark
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Originally Posted by kazap View Post

Hi Simon -I know the thread is really long but there might be an expectation we newer guys read it all before re-asking questions already answered eg


"You MUST remove the capacitors on the the filament pins, otherwise they will both color the sound and work as filters that alter the freq response. With those caps in place I understand why you heard a mellow bass, basically the cut off the bass range when used with the Rod Coleman regs. "

"That helped, more air around the instruments"
This is me you are quoting, but out of context..! Please make sure to quote in the correct context or the reply is misleading...

Sjs asks about use of the capacitors with the original DHT regulators from DIYHIFISUPPLY. The response you quote me for saying is NOT to use the caps over the filament when using the Rod Coleman DHT regulators... Please be aware, that the Rod Coleman DHT regulators use totally different topology, hence you can not just make the assumption that the caps should not be used with the DIYHIFISUPPLY regulators either. I'm sure that the guys at DIYHIFISUPPLY put those caps in there for a reason...
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Last edited by Desmo; 17th March 2013 at 11:09 AM.
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Old 17th March 2013, 11:24 AM   #628
kazap is offline kazap  Australia
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Old 17th March 2013, 11:33 AM   #629
rab28 is offline rab28  Australia
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Quote:
Originally Posted by rab28 View Post
Hi all, just wanted to report that as of this afternoon, I am now the proud owner of a Tram2...
Sad development with my Tram2: the second time i turned it on (without an extremely noisy airconditioner running in the background this time), i could hear a loud hum from one channel. Based on some of the reports earlier in this thread, i blamed the cheap Chinese rectifier tube radiating EMI to the closest of my EML 45 tubes.

So then i borrowed a NOS RCA 5U4G rectifier tube and tried that: even louder hum! So the next night i went back to the Chinese rectifier, but the entire channel was now dead. I also noticed that the 45 tube on that side was not glowing any more. I swapped the tubes and found that the tubes are fine: the Tram2 (heater supply?) has a problem. :-(

As it happens, this coming week I was already going to take the Tram2 to a technician to get the Coleman regulator boards installed, but now it seems he has some repair work to do first!

- richard.
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Old 17th March 2013, 11:36 AM   #630
kazap is offline kazap  Australia
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Congrats - you are now an inducted Tram2 owner. The regulators burning out is a free built in bonus to ensure we dont delay the Coleman mod excessively
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