Analog Upgrade Suggestions Welcome


I am thinking of making several upgrades to my current analog rig.

Current system: click here

First, I am thinking of upgrading my VPI HW19 MKIII to the MKIV. I would like those with first hand experience to tell me if the upgrade is worth the money, and what I can expect to hear in improvement. I am currently using the SDS and SAMA modifications.

Second, I am thinking of upgrading my cartridge. My Sumiko Talisman Alchemist IIb is almost 15 years old and is ready for retirement. Some A'goNers have recommended the Shelter 501. I didn't want to spend more than $1000 for a cartidge as the majority of my listening is still redbook CD. I am open to other suggestions. I want the best cartridge for the money. Also, I am leary of buying such a fragile item used. I have heard others on A'goN say they'd never buy a used cartridge. Please share any experiences out there; good or bad.

My current cartridge has an output of 2.0mV which I assume means high output. Will I need a step-up transformer for a low output cartridge? Is the Shelter 501 at 0.4 mV considered low output? My Classe Six preamp has a phono section. The preamp comes with resistors that the user can change out to match the volume control knob position to the level of line components. I assume I'd need to change the resistor I'm using with my current cartridge. Otherwise I'd have to turn the knob way up to get enough gain with a cartridge with an output that's 1/5 that of my current cartridge. Is that correct?

Thank you all for your help and suggestions.

Cheers!

Mark
mstram
Doug: I forgot: The BW specification for your 803 is: 42Hz
+,- 2db on axis, and you want that we believe that it is flat to 33Hz +,- 0db?.
Come on Doug, speak with the true through facts not " your illusions ".
Regards and enjoy the music.
Raul.
Dear Doug: Why ( like TWL ) when you are " capture " and can't find the " way out ", choose " dead silence ".
This is not a graceful ( not elegant ) escape, this is like the ostrich that hidding it head but everybody can see it full body.
Regards and always enjoy the music.
Raul.
Wasn't romy banned from here before? I frequent many forums besides just Audiogon and this is behavior from those who have been out-cast is nothing new. You see it all the time. It is obvious that he is back with another moniker.
Doug, "Audible Effects of Mechanical Resonance in Turntables" is the name of a paper published by Poul Ladegaard at the 1977 AES convention. It is available for download at www.vinylengine.com --> Forum --> Members download area Miscellaneous, then select "Audible effects of mechanical resonances in turntables".

According to the paper, too low a resonant frequency contributes to: excessive rumble, wow and flutter, tracking force variation, bass intermodulation distortion, and increased susceptibility to feedback. The conclusion of the paper is to recommend resonant frequency in the range of 15-18 Hz.