AusTex64
Well-known member
- Joined
- Jun 3, 2013
- Messages
- 525
Federal is transformer balanced 600 ohms in and out. Looking to knock 15dB or so off both ends. Sometimes Fed will be connected to other old 600 ohm gear (1176), sometimes to Apogee Rosetta 800 with 15K ohm in and 75 ohm out (bridging). So do I make 600:600 H pads, which would seem to work with both scenarios, or make the Federal bridging with 10K in and 100 ohms out via H pad design? I've read so much about this online my brain is numb. This has been a humbling experience! Most data is about mic level impedances, not line level with transformers.
Then there's the debate about U pad vs H pad....
EDIT: Been playing around with this H pad calculator http://www.giangrandi.ch/electronics/attenuators/attenuators.shtml
Looks like to do the bridging thing, min attenuation is 21dB. The 600:600 approach sure seems more flexible, at least for what I'm trying to accomplish.
Then there's the debate about U pad vs H pad....
EDIT: Been playing around with this H pad calculator http://www.giangrandi.ch/electronics/attenuators/attenuators.shtml
Looks like to do the bridging thing, min attenuation is 21dB. The 600:600 approach sure seems more flexible, at least for what I'm trying to accomplish.