Lampizator Atlantic 2 TRP, User Manual

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LampizatOr- ATLANTIC2 TRP DAC Manual
Known tube types:
EL34, KT66, KT88, KT90, KT120, KT77, KT150, KT170, 6L6, 6V6, 6550, 6CA7, 5881
There are countless name and data variations, dont forget this tube has been
manufactured for 90 years already in 8 countries.
Interesting history can be found here: http://www.jacmusic.com/KT88/kt88.htm
Here are some practical tips for tube rolling:
1. Tube compatibility- many people ask “is the tube X compatible with Y?” and the
answer is of course - it depends. Tubes can have completely different bases but be
compatible by parameters and can be swapped by means of an adaptor. A good
example are ECC40, and 6SN7GT - different bases but very close parameters. Or
ECC88 and 6DJ8. Or 6H8C and 6N1P.
2. Other scenario is when the tubes have same base (say - noval) but they have
different pinouts. So we CAN NOT inter-change the two tube types but we CAN use
an adaptor. Same base type and same pinout DOES NOT MEAN that the tubes are
interchangeable - best example is cc81 and cc82 - same base, same exact pinout
but completely different parameters. Or octal 6SN7 and VT99 - both octal, same
parameters, different pinout.
3. Some tubes can have same base, same pinout and same parameters except the
different heaters. Best example is ECC82 and 12BH7 - the former uses half heating
of the latter. They can be used with a switch or within limited timing or with extra
care, depending on the heater arrangement in our DAC. Another example are
completely different tubes that miraculously are perfectly interchangeable - like
E182CC with 5687.
4. DHT triodes used in our Level7 and Big 7 DAC are yet another can of worms. Most
DHT tubes have the same base (four pin) and the same pinout (two fat legs are
heaters and cathode, two slim legs are Grid and Anode. The problem is that these
tubes have completely different heater demands. Our DAC7 is designed to accept
ALL KNOWN dht triodes from this group: 101D, 45, 245, 345, 6A3, 2A3, 300B.
People keep discovering more and more compatible triode types every month.
How is it possible to run so many triode types in one circuit ? DON’T THEY HAVE
DIFFERENT HEATERS ?
Our genius circuit automatically detects the current demand and adjusts voltage
accordingly. We added a switch which divides the tubes into two groups: high heaters
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