Best tonerarm match for Acutex M320 III STR cartridge

Uberwaltz, Lewm,

The feedback is volume dependent. It happens when I turn up the gain to where it's how I like to hear it, below the clipping point on some of my lower powered amps. And, as I mentioned, it sounds spectacularly good until the feedback begins. The signal has a "fluttery" sound, or like a vibrato.

Lew, I looked at your Lenco, is that a slate plinth it's in? Thinking about this, I've had this cartridge for years, and I don't remember having this issue before. The only thing that's different is a change in line stages, I went from a kit built Transcendent Sounds Grounded Grid to a Modwright SWL 9.0 Line Stage, which is much more musical, but I don't know how that would cause this feedback issue, although it does seem to have quite a bit more gain. 

I hope get a handle on this, the M320 III STR is my favorite cartridge now, I kind of miss its use.

Regards,
Dan 

Dan
A lot more gain could certainly contribute.
Do you know what gain?
I run 44db gain most of the time on my Nova 3 although not had the acutex mounted for a while and not with the Nova. Last time I used it was with a Chinook at 40db gain.
The 320str has over 3mv output so really should not need any more than 40db gain IMHO.
Is it possible to reduce the gain at the Phonostage?
Yes you would then need more preamp volume to bring you back to the volume level you decide but if it is Phonostage gain related you may have your answer.

Uberwaltz, I have not changed phono stages, just the line stage. In any case, the MM gain is 50db, and MC gain is 66db.The gain provided by the line stage is 15db.

I've been using the same Modwright SWP 9.0 SE Phono Stage for around six or seven years now, this seems to be a new issue I don't remember encountering before. I remounted the Acutex again today, I'll try and sleuth out the problem some more. I'll get back to 'ya.

Thanks, and Happy New Year,
Dan

Happy New Year Guys.

Dan

The signal has a "fluttery" sound, or like a vibrato.

Is this sound heard through your sub and your main speakers ? 
What HZ does your sub kick in at ?  
What happens if you turn off the sub ?

Cheers Chris

Hi Chris, et al,

The sub is rolled off at 60HZ. When I finally got to listening, I tried first with the sub off. There was no feedback issue, using my SET 300B amp. I then turned the sub on, and there was no feedback at all.

I don't remember which of my three amps I was using when the feedback occurred. It may be the 845 amp, but I would have to swap out amps to be sure. So the problem must be amp-dependent. I will do further testing and get back to you. 

Thanks, and Happy New Year,
Dan