miniOnken/Fonken Picture Gallery

[zman01]

Dave, Chris,

From the pics it is evident that the Floor Stander Mar-kel70 III is doing duty. Some listening impressions for this build?

- Zia

[planet10]

It sounds pretty much like a Mar-Kel70. Maybe not capable of quite the dissappearing act as the primes or the trapezoid stand mounts. But easier to build, high WAF (Bernie took the pictured set to his brothers on the way to their owner, and wife said, we need 2 pair, 1 pr each up & downstairs).

Chris is thinking thru flat-paks on these.

dave

[chrisb]

Originally Posted by planet10

Chris is thinking thru flat-paks on these.

dave

oh, is he now

[planet10]

[KyleinCowichan]

Originally Posted by planet10

It sounds pretty much like a Mar-Kel70. Maybe not capable of quite the dissappearing act as the primes or the trapezoid stand mounts. But easier to build, high WAF (Bernie took the pictured set to his brothers on the way to their owner, and wife said, we need 2 pair, 1 pr each up & downstairs).

Chris is thinking thru flat-paks on these.

dave

My set of floor standers is coming along. One side is ready to line with felt, braces and put the baffle on. Was any stuffing needed to stop unwanted resonances? I am a bit hesitant to seal them up without knowing. I'll try and have a listen with them clamped on first.

KM

[planet10]

I'dbe putting some fluff (or left over cotton felt scraps to at least a 75mm level at the extreme bottom between the baffle & the vent shelf.

dave.

[KyleinCowichan]

I'll do that, thanks Dave. Do you see any major benefit to putting some random height blocks behind the driver to break up any reflections that might make it back through the EL70 cone? I saw the treatment you whipped up at last year's DIY fest on another speaker.

KM

[chrisb]

the figure on drawings I got from Dave stated between 45-106g of poly fiber batting in - I went for full felt lining and 100g on the pair currently on the bench

in my haste /hubris, I elected not to make the back panel removable and they're already buttoned up, so it's too late to change now - we'll see how they turn out

[chrisb]

Originally Posted by KyleinCowichan

I'll do that, thanks Dave. Do you see any major benefit to putting some random height blocks behind the driver to break up any reflections that might make it back through the EL70 cone? I saw the treatment you whipped up at last year's DIY fest on another speaker.

KM

could make for an interesting jenga puzzle to combine something like that with front to back holey cabinet brace - I ran mine long enough to interlock with the port slot

[planet10]

Originally Posted by KyleinCowichan

I'll do that, thanks Dave. Do you see any major benefit to putting some random height blocks behind the driver to break up any reflections that might make it back through the EL70 cone? I saw the treatment you whipped up at last year's DIY fest on another speaker.

Quite beneficial. You don't want to eat up too much volume, and that close to the EL70 angled ends.

If the thot had occurred earlier the same thing could be done at the bottom.

dave