Vandersteen 5 HP Filter settings for RCA unit

What's wrong with asking RICHARD VANDERSTEEN?

Seems too logical.

Do not use the values that are on the chrome stickers.

There are values for the eight or ten dip switch units for model 2 and 3.

It is very important that the switch settings are set by what it is on the cover. There have been many improvements over the years and the switch settings have changed. It is very important the covers be installed and 1 screw installed, because it is a high impedance circuit and prone to RF.

BIG mistake to run the M5-HP(B) without covers as the circuit is high impedance and therefore subject to RF (not good). The cover should always be on with at leist one screw

I hope this helps you out.

Input impedance specs can be a "nominal" value, and the actual impedance can drop in the bass frequencies. So I would always check with voltmeter readings taken at the amp outputs for 100 and 1000 Hz test signals (you want the ratio of amplitudes for the 100 Hz and 1000 Hz signals to be about 0.7). My Rogue M-180 amps have a 200kΩ input impedance spec, but the 75kΩ setting works best with them. And the Stereophile measurements of the M-180 input impedance vs. input frequency are consistent with this.