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Tubelab Discussion and support of Tubelab products, prototypes and experiments

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Old 17th June 2011, 01:00 AM   #11
boywonder is offline boywonder  United States
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Location: So.Cal.
Originally Posted by Steven123 View Post
A Few Pictures From My Tubelab SE in progress I was planning to run 300B tubes on it but things are changed since I own a few pair of 45 Tubes.
So this will be a complete amp running only 45 Tubes.
Triple check the filament jumpers (and power it up and measure filament voltage without the 45's installed) to make sure that the filaments will see 2.5V and not 5V. You wouldn't be the first person to toast a perfectly good pair of 45s this way.
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Old 17th June 2011, 01:43 AM   #12
evanc is offline evanc  United States
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Location: New Jersey. About 1 hour from NYC and 1 min. from the beach
New Tubelab SE building in process.
Looks great. I also built a 45 tube SE. sound great. I used smaller auricaps for coupling .22uF. I've thought of upping the value to hear the subjective difference. My other thing is the heat sinking of Q1 Q2 and U2 U3. I added another larger heat sink to the existing part and it still gets quite hot. You can touch it, but not for long. I don't have the experience to know how hot is too hot. Anyway enjoy...Evan
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Old 30th June 2011, 02:06 PM   #13
Steven123 is offline Steven123  Belgium
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Today I orderd the Power and Output Transformers @ Edcor and I must say I hope that they are worth every single cent.
I Took my chance and asked for a custom Power transformer with following specs :
230V Pri - 500v(250-0-250)@175mA, 6.3v(3.15-0-3.15)@4A, 5v@2A secondaries
Since I will be using this with 45 tubes only I think this will help me to be safe with the tubes.
@ edcor they named it XPWR195-230.
I also orderd 2 CXSE25-8-5k opt's now the wait can begin.
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