Martin 215mk3 with pics

I know you have been talking about PD 1550 and RCF MB15n401. 

But Why the RCF? 5,5mm Xmax??

I am still looking into drivers, but 18sound 15lw2400 and 15nlw9401 still tickles my thoughts.

Hey Father-Francis, can't send you a PM yet so I'll reflood this topic...

did the handles fitted nice in the hatch part? i did some calculations long ago for a pd1550 and if they were correct those two wont fit. but that was long ago and i am about to build one.

i thought also on placing two retractile handles in each side were the one that is not in the hatch is if i cant put the ones in the hatch

Beautiful woodwork there!! and they ARE killer bins !

In my experience... three is not high enough to effectively use Philishaves.

 Phillishaves will sound best one aside as they create a highly efficient point source.(stacking more gets exponentially more difficult and needs to be done vertically)

 Ideally, they would be tilted downwards as to not dispose of half of their glorious sound to entertain the pigeons.

The half sized "lady shaves" are a better format but do not sound the same as the co-entrant 2x12  philis ( a ground breaking design even now ! ) They both use  a "phase plug" ( it isnt ) which is basically the same as any compression driver uses to recombine in time the diaphragms area  and then squish it through a smaller exit into a horn . The drivers that martin used had a very shallow dome that fitted the (very heavy) resin "compression  bung".......

As with a lot of things we could say " It was so good ,they had to stop making it!! "  (edit,  sarcasm alert!)

There are far more practical mid hi solutions that will out perform this format , bearing in mind that height will give you more of an initial advantage , and wont try to kill you lifting it .

Cool ,I hadnt seen that before,some nice stuff there  , but that first picture shows what I mean height wise ,who wants a philishave full in the face and how far do you think thats gonna throw? and the lower hf boxes too. It would be ok for a kids party though Build two more 215s and your above the problem

An interesting solution for 3 x215s ,Martin did some tall 3x12" with a 2".Very retro !