realdeal

Responses from realdeal

How does OTL amp get its power?
Most OTL get their power from the cathode of an energized output tube. 
Amplifiers:A Keeper for Life. Do you know of one ?
My very own 8417 OTL Class A,even a Class A OPT will not come close. 
What component is responsible for dynamics ?
It will be the amplifier,if it's tube,it's circuit design and component used.Next is sensitivity of the speaker,the higher the better. 
Upgrading wall outlets
Change you wall socket to sure-grip hospital grade socket. 
Recommend 300b tubes for Frankenstein Amps
Unusual, unless something wrong with the plate plate voltage or the bias voltage/cathode resistor.It is a circuit problem not the tube. 
cleaning the pins of NOS tubes...bad idea?
Clean pins do better contact/better sound than dirty ones.Not rocket scientist idea. 
WHICH TUBE AMP TO BUY
You can't go wrong if you opt for a class "A" amp. 
Biasing Cayin A 88T tube amp
Biasing is making the plate current of the tube same as the other and that is done by adjusting the bias voltage or by adjusting the cathode bias resistor. 
SFL-2 power supply question.
I don't have the schematics but if the 380AC volts is the input voltage,then when it is rectified it will come out to 450VDC. 
Cary Rocket 88's Cat Eyes
Have the tubes test first,then check power transformer,then output transformer.Check only with ordinary ohmmeter for continuity. 
Best tubes for Jolida 1501 RC?
If you can get the tube 8417 any brand,will make a big difference and outperform any 7AC base socket. 
Power Conditioner or Distributor?
If you are looking for clean power,it can be taken only from an isolation transformer and coupled it with surge protector,you have a reliable clean power supply. 
Can I use two preamps?
Yes,No problem,very safe for pre-amp,but not operating a tube amp with only one channel,Enjoy 
Re-tubing Jadis DA7
for 12au7 best bet is e80cc, and for 12ax7 use 12bz7 same specs as 12x7 but twice the gm. 
TESTING SPEAKERS
IN MY OPINION,YOU HAVE TO BREAK-IN THE SPEAKER FIRST (AT LEAST 60 MINUTE OF WABBLE AND ONE MINUTE OF DEGAUSSING) BEFORE YOU WILL HAVE A GOOD AUDITION OF THE SPEAKER.