Anyone wish they had a rumble subsonic filter?

Some phono preamps have them built in. I am running a Sim Audio LP 5.3. The filter is engaged with a jumper.

Actually, if the phono preamp is where this circuit would be, if it existed, I don't see why it isn't a feature on all phono preamps.

240zracer...The 18 Hz rumble filter attenuated everything. The mix-to-mono approach can use a much higher frequency, although 180 Hz does sound a bit too high. If you don't use a subwoofer you will need to buy a line level device. But you don't need to buy a whole new preamp.

Hello, I use a 20hz filter which I believe is necessary for any LP playback system. Since my system is very capable of reproducing low bass I also use a rumble filter which monos the signal at 38hz. 180 hz is too high to sum to mono. Try the 20hz filter first then if you still have a problem you may need a rumble filter. The two types of filters are for two different problems and 20hz is the first one to address.

This all depends on your system and its bass reproduction abilities ie: tonearm/cartridge and table interaction and its bass reproduction and your speakers ability to reproduce low bass. I think stereo reproduction is important to at least down to 50 hz and lower if possible.

My 20hz filter and the rumble filter are in the Marchand Bassis.
Bob

Thanks Bob. I just talked to Marchand. They do indeed have solutions, the Bassis being one of them. They also can supply the very large inductors needed to add a passive high pass circuit to the woofer crossover itself. I don't think I have rumble, just a bit of subsonic woofer cone movement. Looked at your system. Very impressive!