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Old 27th April 2013, 08:32 AM   #701
Desmo is offline Desmo  Denmark
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@cap + resistor on Rod Coleman regulators... Look back in the thread, I have answered that question (almost) 100 times with picture and descriptions. I used Amtrans caps + Mills 12W resistors... It can be fitted later, I did, but more work. The parts give more clarity and dynamics...

@Alexander caps... Do yourself a favor and listen with the original caps in the Tram II (they are teflons = long, long break in). You might experience, that that the standard caps suits you better than the Alexanders... We (DIY'ers) likes to ''upgrade'', but often upgrades does not make the sound better, just different. The Alexanders are warmer, and more natural than the original caps, but they are not as open and transparent. Listen to both...

@Shinkoh... I bought mine from Acoustic Dimension in Holland where I also bought the Tram II kit...

@Mundorf Supreme... Again, many ''upgrades'' are just something different. In this case going from the Obbligatos in the Tram II to the Supremes I would call a downgrade... The parts quality in the Tram II is HIGH...

@EML 45's... Nice tubes, and beautiful bottles. They are really nice and detailed, not quite the dynamics and live-feeling of the 2A3's.

@Cunninghams available... Sorry, I don't understand the question. They are available if you find one for sale... I now use the Chatham-Electronics 6AS7, I like it better than my other 6AS7 tubes: More details, more open and especially better nuances in the bass...
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Old 27th April 2013, 09:06 AM   #702
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Quote:
Originally Posted by Desmo View Post
Hej Carsten, Næste gang jeg har min forforstærker åben skal jeg gerne kigge efter, hvad Q3 er for en sag..!
Great - Thanks. I will look forward to that.

The faulty Tram was replaced with a Pass Labs XP10 which is supposed to be a Worldclass Pre (and it is..), but I am listening to music through the Pass with the same feeling as a man who prefer blondes, but ended up marrying a brunette...

The response from Diyhifisupply in December 2012 regarding the FCPSU-board was:

""We run out of FCPSU, at first I expect some new ones will come soon then there are some changes at last. We used to use them in power amps well but it became unstable. But if we use them just for preamp it's difficult to meet the MOQ."

I had to google MOQ: "Minimum Order Quantity"

The Order was later cancelled on behalf of diyhifisupply due to inability to supply new Boards.

So treat your FCPSU-boards with care - I am not sure it will ever be made again.

Last edited by Nonnegativ; 27th April 2013 at 09:20 AM.
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Old 27th April 2013, 09:06 AM   #703
kazap is offline kazap  Australia
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As a beginner I just want to say a huge thanks to you guys sharing your expertise with such generosity.
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Old 27th April 2013, 11:10 AM   #704
Desmo is offline Desmo  Denmark
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Originally Posted by Nonnegativ View Post
Great - Thanks. I will look forward to that.

The faulty Tram was replaced with a Pass Labs XP10 which is supposed to be a Worldclass Pre (and it is..), but I am listening to music through the Pass with the same feeling as a man who prefer blondes, but ended up marrying a brunette...
To be honest, I don't find Pass Labs preamps to be world class. Pass Labs are big here in Denmark (as you know) and several of my friends has their power amps, and they also tried the preamps, but did not buy them because they did not find them that good...

IMHO the Tram II (with the various upgrades) sounds quite a lot better - Pass Labs owners tend to agree (we have tried comparing my Tram with the former Pass Labs top model).

Regarding the FCPSU module, then there is no reason for panic. All parts on the module are standard components and can easily be replaced if something fails. But what the info you have indicate is, that the Tram II will soon be discontinued. Or maybe there will be a Tram III in a different chassis with a different power supply module.
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Last edited by Desmo; 27th April 2013 at 11:18 AM.
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Old 28th April 2013, 10:25 AM   #705
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@Mundorf Supreme... Again, many ''upgrades'' are just something different. In this case going from the Obbligatos in the Tram II to the Supremes I would call a downgrade... The parts quality in the Tram II is HIGH...

Morten, you are still using the six Solen 2.2uf tinfoil caps in the output stage in your Tram2?

I have a Philips rectifier tube (same as yours) being listened in a Killerdac against a GEC U52. The person who is doing the A/B comparison builds the dacs and is very interested if this Philips tube is as good as the GEC tube. I will then get this Philips tube for an A/B against the U52 in my Tram2. Will keep you posted.

Peter
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Old 28th April 2013, 10:31 AM   #706
Desmo is offline Desmo  Denmark
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Originally Posted by ptashton View Post
@Mundorf Supreme... Again, many ''upgrades'' are just something different. In this case going from the Obbligatos in the Tram II to the Supremes I would call a downgrade... The parts quality in the Tram II is HIGH...

Morten, you are still using the six Solen 2.2uf tinfoil caps in the output stage in your Tram2?

I have a Philips rectifier tube (same as yours) being listened in a Killerdac against a GEC U52. The person who is doing the A/B comparison builds the dacs and is very interested if this Philips tube is as good as the GEC tube. I will then get this Philips tube for an A/B against the U52 in my Tram2. Will keep you posted.

Peter
Hi Peter,

I have never used Solen caps. I use 6 x 2.2uF Obbligato tinfoil (I kept the one delivered with the Tram and replaced the 10uF PP with 5 more of the Obbligato tinfoils)... This is one of the better upgrades for the Tram, these caps are really good and not very expensive.

It will be interesting to hear what you think of the rectifiers... My experience with the Philips is, that the break in is quite long so have patience... I still go back and forth between the Philips and Brimar. I can't say one is ''better'' than the other, they are slightly different and the ''better'' one is the one that has best system synergy. The difference between the Philips and the Brimar is much smaller now where the Philips is fully broken in, than it was when I wrote the comparison review earlier...
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Last edited by Desmo; 28th April 2013 at 10:38 AM.
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Old 28th April 2013, 10:47 AM   #707
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[QUOTE=Desmo;3470990]Hi Peter,

I have never used Solen caps. I use 6 x 2.2uF Obbligato tinfoil (I kept the one delivered with the Tram and replaced the 10uF PP with 5 more of the Obbligato tinfoils)... This is one of the better upgrades for the Tram, these caps are really good and not very expensive.

Morten, my apologies. I will keep you posted on the rectifier shootout.

Peter
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Old 28th April 2013, 07:52 PM   #708
Falck is offline Falck  Sweden
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Default Heatsink for Rod Coleman regulator

Hi Tram owners,

I have just made the Rod Coleman DHT regulators for my Tram (2A3 tubes) with Mortens tips for C3 caps and R1 resistors. I have not made the raw Dc supply yet because I need to decide how to design the heatsink first. Rod Coleman suggested that I put a heatsink outside the Tram, but I´m not very happy with that. I have seen Mortens heatsink/solution. Are there any other heatsinksolution for the Colmanregulator that is good?

Best Regards
Mats Falck
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Old 29th April 2013, 09:55 AM   #709
rab28 is offline rab28  Australia
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Thanks Morten,

Quote:
Originally Posted by Desmo View Post
@cap + resistor on Rod Coleman regulators... Look back in the thread, I have answered that question (almost) 100 times
Oops x 2: first, for asking the dumb question, and second, for forgetting that the technician installing the Coleman regs did indeed copy your parts substitution!

Quote:
Originally Posted by Desmo View Post
@Shinkoh... I bought mine from Acoustic Dimension in Holland where I also bought the Tram II kit...
Thank you so much for this: i have now asked partsconnection to remove the audio note resistors from my order, and i have ordered Shinkos from AD!

Quote:
Originally Posted by Desmo View Post
In this case going from the Obbligatos in the Tram II to the Supremes I would call a downgrade...
I have heard that removing the 2.2uF cap from the parallel pair (ie leaving only the 10mF cap) improves the sound quality. Has anyone here tried this? For now, I am leaving them alone.

Quote:
Originally Posted by Desmo View Post
@EML 45's... Nice tubes, and beautiful bottles. They are really nice and detailed, not quite the dynamics and live-feeling of the 2A3's.
At some point in the future i will try 2A3's. I chose the EML 45s after hearing how good my friend's Tram2 sounded with EML tubes.

- richard
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Old 29th April 2013, 03:46 PM   #710
Desmo is offline Desmo  Denmark
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@Rod Coleman regs... Good that he got them installed..!

@output caps... The theory behind using a smaller cap of higher quality and a larger one of lower quality is, that you get the sonic signature of the higher quality one at a lower price than if you build the whole cap in high quality... In reality it's my experience that theory is one thing, reality something else. I have not heard it sound good, and that's why I went for the entire cap as the higher quality tin foils. I think the reason for two different caps not really working well together sonically is because a cap is a resonating circuit (sorry, again I don't have the proper English technical words) and when combining two different resonating circuits there are more problems than benefits. I have tried this many times because in theory this ''short cut'' should work, but in reality my experience is, that using the same cap, for the entire value sounds better. All this to say, that I would not be surprised if the output cap sounds better with the 2.2uf removed, even considering that the 2.2uf tin-foils sounds better than the 10uf gold. But it will sound considerably better if you remove the gold cap instead and use all tin-foils

@Triodes... It depends on what sound we want. I like the explosive dynamics and ''live feeling'' of the 2A3's where the 45's are more polite and focus on coherency. Both are good, it's a matter of taste...
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