I've had a DBX 3BX for a while now and I'm interested in making some modifications to it. Here's what I plan to do:
On Untrue,they recommend replacing the ouput capacitor (from 0.33uF to 1uF) capacitor and upgrading the output capacitor (from 4.7uF to 22uF) on the DBX 118. Since the 3BX has a similar output capacitor to the DBX 118, I'll follow the suggestion and replace it accordingly. However, I'm uncertain about the input capacitor of the 3BX. Any suggestions on this matter?
Additionally, I would appreciate any recommendations for other modifications.
For those interested, here's the schematic:
http://akdatabase.org/AKview/albums/userpics/10004/DBX 3BX Manual.pdf
I plan to recalibrate it using the instructions provided in this post:
https://www.diyaudio.com/community/threads/anybody-still-use-dbx-3bx-units.313268/
Best,
- I will be changing the capacitors in the entire signal path.
- I'm considering replacing the 4558T op-amp (AO1-AO12) with a TL072.
- I'm also looking to swap out the linear potentiometer with a rotary one. Does anyone have a suggestion for a 4-gang 100k potentiometer?
On Untrue,they recommend replacing the ouput capacitor (from 0.33uF to 1uF) capacitor and upgrading the output capacitor (from 4.7uF to 22uF) on the DBX 118. Since the 3BX has a similar output capacitor to the DBX 118, I'll follow the suggestion and replace it accordingly. However, I'm uncertain about the input capacitor of the 3BX. Any suggestions on this matter?
Additionally, I would appreciate any recommendations for other modifications.
For those interested, here's the schematic:
http://akdatabase.org/AKview/albums/userpics/10004/DBX 3BX Manual.pdf
I plan to recalibrate it using the instructions provided in this post:
https://www.diyaudio.com/community/threads/anybody-still-use-dbx-3bx-units.313268/
Best,