For large values in the the LF circuit, you can probably get by using a smaller value MR to bypass a cheaper film cap.
I found a very noticeable difference using MR's in the shunt position(parallel notch) of my Tannoy's HF circuit. I've also used them in the shunt position of my custom speaker's midrange and woofer. There I found the difference in the LF subtle in comparison though.
IMO, they're the next best thing to the Duelund CAST.
I found a very noticeable difference using MR's in the shunt position(parallel notch) of my Tannoy's HF circuit. I've also used them in the shunt position of my custom speaker's midrange and woofer. There I found the difference in the LF subtle in comparison though.
IMO, they're the next best thing to the Duelund CAST.