VPI Prime Sig/Lyra Delos / Feedback ...help!


Hello all, strange one here...just picked up a VPI Prime Signature Rosewood and a Lyra Delos with about 20-40 hours on it...sounded great at low volume with my sacred Steely Dan - Aja Cisco pressing . Later that night at higher volumes I'm getting a midrange-low feedback . 

Here's my rig : 

VPI Prime Sig with Unipvot / Lyra Delos 0.6m output voltage / 1.75 tracking force

Allnic 1202 Phono Pre (variable DB boost  +22, +24 , +28, +32) 

Manley Snappers / Jumbo Shrimp Pre 

Harbeth 40.3XD 

So I A/B'd w the old turntable VPI Prime Scout / Unipivot / Hana ML 0.4 Output and all was fine 🤔 I then swapped arms moving the Hana to the Prime Sig , no feedback ....🤔

I've tried adjusting the Allnic (all 4 levels mentioned above) and get feedback with the Lyra on every setting...

The hifi business I purchased from said they had tested thoroughly and had 0 problem with it ...so I'm perplexed , this doesn't seem to be any vibration feedback , is the Lyra just not jiving with my Phonostage for some reason? 

Any help appreciated ...

 

128x128tommypenngotti

I haven't heard YOUR table / arm combo with a Delos.  But I have not had good experience with Lyra cartridges with the VPI 12" unipivot arm (VPI Aries Extended).  Have not heard ANY Lyra cartridge work well with a VPI unipivot arm on any table.  I switched to a Jelco TK-850L and both the Lyra carts I currently have just love it.  

I have heard VPI unipivot arms work VERY WELL with AudioTechnica MC carts.  

@bpoletti

Thanks for the info ....again strange because not only does VPI use the Lyra mention in their manual for the Prime Signature model, I hear consistently it’s a go to for VPI tables...

Might be the 3D printed arms don’t do as well with Lyra on wood floors etc... ..🤷🏻‍♂️

@tommypenngotti 

My direct experience was with a Lyra Clavis Da Capo and a Skala.  Both were defocused and thin sounding on the VPI JMW 12 on an Aries Extended (original).  On a "custom built" table using original VPI TNT components and a Jelco TK-850L, both opened up, had great tonal body and remarkable imaging and soundstage. 

Maybe the VPI / Lyra recommendation is associated with the gimbaled arms.

 

 

 

Later that night at higher volumes I'm getting a midrange-low feedback

@tommypenngotti Since this is volume related it leads me to think the turntable isn't well isolated from room/air -borne vibration. If it were me I'd be looking at things to improve its isolation- better feet, an anti-vibration platform, that sort of thing.