scottlangendyk
Active member
- Joined
- Aug 25, 2010
- Messages
- 25
It's my understanding that API uses the LM3915 for led metering in the API 3124 and API 512 preamps. The meters claim to go from -12 to +18, but to do this they would need to cover a 33dB range, as opposed to the 30dB range given by the LM3915 spec.
I've tried examining the 3124 schematic someone posted, but it's hard to follow due to all the unclear overlapping lines. How is this extended range being achieved?
EDIT: This is the schematic for which I'm referring to: http://www.classicapi.com/catalog/images/gallery/3124/1987-era-3124-schemo.pdf
I've tried examining the 3124 schematic someone posted, but it's hard to follow due to all the unclear overlapping lines. How is this extended range being achieved?
EDIT: This is the schematic for which I'm referring to: http://www.classicapi.com/catalog/images/gallery/3124/1987-era-3124-schemo.pdf