Re: Langevin Am16.. has it been DIYed ????
« Reply #40 on: February 06, 2014, 10:27:58 AM »
Langevin PCB is on Cinemag's website and uses CM-28121 as input transformer and CM-28122 as output transformer. I was also wondering if anybody had worked out an input pad/gain for this. I was thinking of using a 2P3T input to get the different input impedences but was still trying to workout how to do a variable pad or input pot to the unit. Anybody who's figured it out please let us know.


Whoops

Re: Langevin Am16.. has it been DIYed ????
« Reply #41 on: February 17, 2016, 11:10:56 PM »
Langevin PCB is on Cinemag's website and uses CM-28121 as input transformer and CM-28122 as output transformer. I was also wondering if anybody had worked out an input pad/gain for this. I was thinking of using a 2P3T input to get the different input impedences but was still trying to workout how to do a variable pad or input pot to the unit. Anybody who's figured it out please let us know.

You can use a 1K pot at the output connected to the out transformer secondary,
or use a 600ohms T pad at the same spot.
For the input use a 20dbs pad, it's enough


 

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