Jelco Tone Arms

[dankaz97]

HI guys,
My 1st post!! Ok, been trying to find a suitable armboard for my Jelco SA750D or possible DIY. Been checking out Micro Seiki armboard e.g. AX-1, AX-1G but can't seems to find the dimensions. Any of you gents can assist?
Much appreciated! Cheers

Hi,
The mounting for the SA-750D is similar to Linn but the stated mounting distance is 214mm. Mounting the arm on a Linn arm board (30mm hole at 211mm) and using a Baerwald protractor should give better alignment (lower tracing distortion) while still leaving the cartridge central in the slots. Possibly worth a try?

The Micro Seiki tonearm base list shows the hole size for some AX arm boards but the list is pre-Linn arms (!) so some cross referencing with the tonearm database may be needed?
http://www.vinylengine.com/library/micr ... list.shtml

Regards,
JaS

Thanks JaS! As I'm using a Roksan, there's no way I can mount a 2nd arm, l'll probably DIY the armboard as well as the base support. A kind of project to keep myself (brain) busy. Will be mounting either AT 33PTG or DL 103R. Don't know how it'll sound??? Well, back to the drawing board. Cheers

[rbwinterlink]

Again I want to thank everyone for your great input. If I may, how would a body be able to discern which (MM or MC) works best with a particular tone arm? I now have a very, very basic understanding of the importants of a tone arms mass plus the mass of the head shell. I think that the cartridge's mass also plays into the equation.

However, there must be a mathamatical formula for figuring all of this out. I also believe there is more basic way to make these conclusions that the common man (me) can understand without being a rocket scientist. I would be very pleased to get some help with this problem. I am sure I am the only one who still does not understand how to figure this all out.

I have started work on my plinth. Because I want to use the excellent bearing and platter from the Cranfield Rock turntable I am going to have to have the metal that holds the bearing cut to the size I want and need. So the old Elite Rock Turntable won't go to waste. Also I won't be using the springs because I always thought they made the turntable less focused. So, I will soon have to determine which tone arm to purchase and then I've got to get down to the business of finding a cartridge I can live with. Hence, why I am looking for some help with cartridtge/tone arm matching. Thanks all.

Bob W.

[hesson12]

These links may help. They include a lot of information, including calculators you can use to determine resonance frequencies, etc.

http://www.cartridgedb.com/tools.asp

http://www.theanalogdept.com/cartridge_ ... tching.htm

-Bob[/url]

[rbwinterlink]

Hesson12,

Thank you so much for this additional and very important information. I have already followed the links you've provided and very happy with what I am finding there. I do appreciate this.

Bob W.

[WmAx]

The Excalibur arm is the first arm offered in a commercially available Rock turntable, so it's old school with minimum amenities. It is the most basic tone arm you could buy back then (1982). That is the reason I am looking for an interim arm until I can afford one of the great arms (SME, etc). I am going inexpensive right now due to my budget.

While much more expensive than the Jelco, the Clearaudio Satisfy($1200 USD) Aluminum might be another option. I don't think this arm gives up anything in performance; very low resonance design, top notch bearings (tungsten points into sapphire bearings), non-interference anti-skate that is removable if you don't like anti-skate systems, absolute top notch build quality. This is considerably cheaper than the high end series of SME arms, but you may find that you don't necessarily need to get these, after using the Clearaudio.

I am able to consistently get real sounding playback on my system, using the Clearaudio Satisfy Aluminum. Very low noise pickup, also.

-Chris