Swapping the MMF 5 for an SL-1210M5G

Do the numbers support the Dynavector 10x5?

With a 12-15g headshell (e.g., Sumiko, Audio Technica Technihard) in lieu of the stock 7.5g one, yes.

06-20-08: Tvad
The Cartridge Database resonance chart for the 103R indicates that no tonearm mass from 4gm all the way to 30gm will get the resonance to 11Hz.

Right you are. I should have used the chart instead of relying on my math. Even a heavy headshell only gets the 103R into the 13's.

I do wonder, however, if the DL-103 series should be calculated at the stated compliance of 5 or figured more as 7 or 8. The Catridge Database does mention that Denon cites their compliance at 100 Hz instead of 10KHz (as, presumably, other cartridge mfrs do), which could result in a higher figure.

For example, if you use a 15g Technihard headshell and pretend the DL-103 has a compliance of 7.5, resonance calculation goes down to about 10.9 Hz.

At Denon's stated compliance, the best I can come up with (using a 15g headshell) is about 12.5 Hz. Time to tape some pennies to the headshell? :-)

For all this talk about the DL-103 series, you can get an AT150MLX, AT OC9 II, or Denon DL-301 MkII to easily match to an SL12x0 arm at 9-10 Hz, usually with the 12g Sumiko (or equivalent) headshell.

Johnnyb53, Tvad

So let me ask, the M5g Headshell with headshell leads is 7.5 grams? The Denon with a 12 gram shell should suffice? Now Technics supplies the headshell with a 4 gram additional weight as well bringing the total up to 12.5 grams just a tad over this Sumiko shell.. So why not do that for free and try right?

I am going to give this a shot myself, so tell me guys if I do the stock headshell with the 4 gram weight screwed in and the denon 301 II which states its 6 grams etc... I should get this optimal magic figure of 10 to 12hz?

Thanks