RA66 re-amping transformer for passive reamping boxes.
Description
The RA66 differs from other re-amping box transformers in several ways. The most significant difference is the impedance ratio, which is ideally chosen for the RA66 to provide excellent bandwidth without the extremely high output volume, which often plagues other transformers commonly used for this application. That is not to say there is no need for a volume pot. You'll still want to slap a 100k Ohms logarithmic potentiometer across the output and send the wiper to your 1/4" output jack. There will be some volume boost that occurs due to the impedance ratio of 6k:60k. Connect your XLR input jack to the 6k Ohms primary and the secondary 60k output goes to the volume pot and output jack. Put it in a box and you have a passive re-amping box with transformer tone. You could also put a buffer stage on the output if you want to get a more transparent tone.
We are providing helpful tools for implementing LBA Magnetics into designs made with KiCad. If you're a circuit designer or tinkerer using KiCad, download the RA66 footprint, schematic symbol, and 3D model right here:
| lba_transformer_kicad_files.zip |
|
|