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Thermionic 3 question
https://audioroundtable.com/forum/index.phpindex.php?t=rview&goto=91396&th=22692#msg_91396
would like to change this driver to an DE250 B&C .
My question is, which crossover parts I have to change.
Thank you very much
Frank]]>ecc822020-01-31T10:34:33-00:00Re: Thermionic 3 question
https://audioroundtable.com/forum/index.phpindex.php?t=rview&goto=91398&th=22692#msg_91398
It'll swap right over. But change the R1/R2 parts to reduce the tweeter 2dB. See the following chart for values:
]]>Wayne Parham2020-01-31T15:23:10-00:00Re: Thermionic 3 question
https://audioroundtable.com/forum/index.phpindex.php?t=rview&goto=91400&th=22692#msg_91400
Thank you very much for the resistor chart.
What is about the capacitor?
Is it required for the DE250?
Frank]]>ecc822020-01-31T21:13:45-00:00Re: Thermionic 3 question
https://audioroundtable.com/forum/index.phpindex.php?t=rview&goto=91401&th=22692#msg_91401
You won't need to change the capacitor unless you upgrade the radial horn to our H290C waveguide. If you do that, you'll remove the 0.47uF capacitor R1 and install a 16Ω resistor Rs.
]]>Wayne Parham2020-01-31T21:55:40-00:00Re: Thermionic 3 question
https://audioroundtable.com/forum/index.phpindex.php?t=rview&goto=91402&th=22692#msg_91402
Thanks for your support.