Does anyone use a RUMBLE filter?

Raul:

The subsonic filter on my phono preamp is -9 dB @ 10 Hz, -18 dB @ 5 Hz and -48 dB @ 2 Hz.

Not sure what you'd be hearing down there (at least in terms of anything good on the vinyl as opposed to the negative effects of both the amplifier and the woofers trying to reproduce it), but if you are, you are a better man than me.

My system is reasonably resolving, does not suffer from a tonearm/cartridge mismatch and my ears are pretty well trained after 35 years in this hobby.

Now if you are happy, then good for you too.

Enjoy the music as well.

I have noticed this as well, my phono stage (SimAudio lp5.3 and psx), has 2 selectable equalisation filters, RIAA and IEC. They are essentially the same, but the IEC filter roles off everything below 20Hz. I use this and have no woofer cone "pumping". I'm sure that excessive cone excursion, must interfere with how the cone reproduces the musical notes. I agree, I would be loath to put and extra component in the signal chain, with attendant interconnects and filter, but with it built into the filter that every cartridge has to use i'm happy to use it. I can't hear anything below 30 Hz anyway.

Dear Hdm: I think that if you take 10 persons with the experience you have and ask about their preferences on use a rumble filter or not use it you could get 9 answers that they don't use it and don't like it ( me between them. ), perhaps by ignorance.

I'm not against your prefrence because you are satisfied with and is you whom have to live hearing it.

Now, maybe I'm ignorant on the subject or I'm missing something or you know for sure something I don't. I would like that you can explain how is that a cartridge signal that pass for a rumble filter that is an additional electronic stage is not degraded ???? IMHO the best rumble filter is NO rumble filter, especially that in normal condition we don't need it.
If any one of us has a problem with those woofer movements and the system set up is correct then something on the audio system links is running wrong or exist a mistmatch in between or simple bad design item and in this case we have to change it.

I don't like to take an aspirin for a headache but is better to know why that headache coming and then fix it.

You like aspirns: good, nothing wrong with that. It's obvious that your music/sound priorities are different from mines that are to lose or add the less to the cartridge signal protecting its sensible integrity to be nearer to the recording.

Regards and enjoy the music,
}R.

For those filter advcocates remember that there are some amplifiers/preamps with " problems " in its design that suffer of low bass oscilations that could provoke those woofer movements.

As I said IMHO it's always better to fix the headache, that filter is an aspirin that really is solving nothing but degrading the audio signal.

R.

How are you degrading the audio signal when you're removing frequencies that cannot be reproduced by your speakers?