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Benz Lp-s Frequency Resonance Problems

Hi to all,

As i mentioned on another thread, i have some problems with my Lp-s on my Graham Phantom arm, i have problems with little warps. I have measssured with the Hifi News Lp and lateral i have between 8hz-5hz and vertical i don't know well as i can't see cartridge wobble or hear any distortion. But for my problem the important is the lateral test.
Benz recommends medium to high mass arms but that's impossible!
To get 10hz frequency resonance you need a 0 gram mass arm!

I don't know if to try a Reed arm, the lightest one is 10gr effective mass and i should have 8hz Resonance frequency.

Any idea?

Many thanks
agucela
agucela OP
17 posts
 
And i also tried with less VTF, but nothing. I only happens with 2-3 Lps but it should not .
tobes's avatar
tobes
436 posts
 
The weight of the LPS and its compliance suggest that the resonant frequency will be on the low side with the Phantom.
What turntable are you using?
Sometimes its how the turntable deals with low frequencies - ie perhaps there is a resonance being excited in the turntable/suspension?
It might be helpful to know what tables the other Phantom/LPS owners are using.
stringreen's avatar
stringreen
6,470 posts
 
My LPS is absolutely wonderful on a VPI Superscoutmaster Rim Drive with a 10.5i tonearm.
0thd
22 posts
 
Mine does not have any problems on a Transrotor Fat Bob S and the latest version of the Graham Phantom Supreme. I was going to use it with my SME 309, but it would have required a $500.00 weight and I decided to put that towards the Graham instead. I'm wondering how bad the warped are. Can they be played on your dealer's or any of your friends turntables?
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