There are two key things you're concerned about.
One is the pivot to spindle distance - the distance from the center of the mounting hole to the record spindle. On the 250 style Jelco, it's 214 mm.
The other issue is whether your Denon's platter height is standard. A good working number is for the top of the platter to be about 1-3/8" (1.375") above the surface of the armboard.
Dealer disclaimer - I sell the Jelco arms under the Artisan Audio badge.
Cheers,
Thom @ Galibier
One is the pivot to spindle distance - the distance from the center of the mounting hole to the record spindle. On the 250 style Jelco, it's 214 mm.
The other issue is whether your Denon's platter height is standard. A good working number is for the top of the platter to be about 1-3/8" (1.375") above the surface of the armboard.
Dealer disclaimer - I sell the Jelco arms under the Artisan Audio badge.
Cheers,
Thom @ Galibier