How to Hook up Rumble Filter?

[WntrMute2]

I have a Wright WPL20 pre-amp (built in phono stage). I just received a KAB rumble filter but it says to install it after the phono stage which obviously can't be done. The directions also mention using the tape loop but I'm unsure how this should be done. Anyone using one of these filters with a similar set-up? Help would be appreciated! Thanks.

Dave

 

[AnalogDigit]

Does the KAB rumble filter kit have RCA output and input jacks on it? I would connect the output of the KAB rumble kit to the tape input of your pre-amp, then connect the input of the KAB rumble kit to the tape output of your pre-amp. To make it work, turn on the KAB rumble kit, then turn on the tape monitor switch of your pre-amp.

 

[asmneto]

I am also having this problem with a McIntosh C2300 with an integrated phono stagre. How should I hook up the KAB Rumble Filter?

 

[watercourse]

Asmneto - if you're the one that also posted the same question at audio aficionado, you can put the kab rf-1 between your pre and your amp, but I think a better solution is to find a spot for your turntable where the low frequencies don't collect in the room. Or, if you're using a sub, experiment with placing the sub somewhere else where it won't interact with your table.

 

[asmneto]

It's not about low frequencies collecting on the room. I also get the woofers pumping with a needle drop recorded CD, for instance. It happens on most of my vinyl on the first track. The woofers surely are drawing a lot of amp power.

If I hook it up between the preamp and amp, it will be on the path of CD playing. I'd like to address it only to vinyl playing. Should I hook it up on the tape process loop?

 

[Catcher10]

It's not about low frequencies collecting on the room. I also get the woofers pumping with a needle drop recorded CD, for instance. It happens on most of my vinyl on the first track. The woofers surely are drawing a lot of amp power.

If I hook it up between the preamp and amp, it will be on the path of CD playing. I'd like to address it only to vinyl playing. Should I hook it up on the tape process loop?

Only the 1st track?

What TT and cart are you running? Where does the TT sit?

 

[watercourse]

To the OP: The way to put the filter in the tape loop in your pre is to listen/monitor from the "tape in" as the source, while the filter is also receiving the signal from "tape out". If your pre can do this, the tape out would be connected to the input side of the RF-1, and the RF-1 output would be connected to the tape in or tape monitor.

IME, woofer pumping is due to feedback from speakers to turntable - usually because the table is situated where low frequencies collect and reinforce each other, not because it is recorded that way in the source material. But of course, I'm not 100% familiar with your setup.

When you recorded your needledrops, did you monitor the recording through your speakers, or was the amp bypassed? If you we're listening to the LP through your system as you were recording, it may have reproduced the acoustic feedback as well.

Do you notice woofer pumping at low volumes, or only when playing somewhat loudly?

A simple but inconvenient solution would be to put the filter in between pre and amp only when needed. That said, if your needledrops also cause woofer pumping and you are concerned about loss of amp headroom, why not leave it in place at all times?

 

[gusten]

It's not about low frequencies collecting on the room. I also get the woofers pumping with a needle drop recorded CD, for instance. It happens on most of my vinyl on the first track. The woofers surely are drawing a lot of amp power.

If I hook it up between the preamp and amp, it will be on the path of CD playing. I'd like to address it only to vinyl playing. Should I hook it up on the tape process loop?

It´s most likely arm/cartridge resonance that is causing this, well more likely than a feedback problem.

Look into if that is the problem, if so I would address that instead of using an excessive rumble filter.
gusten