Melon Head's State of the "DUMB" Open Baffle Design

[Jack Caldwell]

Are you talking isobarik OB. Could you draw a picture?

It's like Nelson's slot loaded open baffle but with the "wings" folded back. YOu can load 'em with the drivers back to back with connecting members to tie the magnet assemblies together for tight mechanical coupling. I'll post a drawing later when I have some free time.

 

[buzzforb]

AH!. Forgive me, I am slow.

 

[Melon Head]

I was thinking of PHY style wings. You get a very nice smooth response with that

 

[Zen Mod]

whazzat?

Dodo ?

 

[Melon Head]

Open baffle with folded wings on piano hinges, which can be folded back at any angle

 

[Melon Head]

Melon Head's MacGyver Baffle

Trying to get a nice compromise between the PHY and the Jamo. Hopefully this does the trick.

 

[buzzforb]

Take a look at Troels Acapella for cool design. Very similar.

 

[Melon Head]

Just checked that out. Looks good, although bass reflex on bass woofer

 

[Melon Head]

Just listening to it now.
Sounds quite good.

I will say one thing. Dual woofers (or more ) really add the extra bit of realism to having a live performance in your room.

The plan is to do a slot loaded version of this when my truck load of woofers arrive

 

[Zen Mod]

you don't have nor ear nor experience nor hiend apparatus for judging that

 

[Melon Head]

The response curve is no where near as good as PHY.
There is a broad 7dB suck out around 500Hz.

 

[Melon Head]

Response curve

 

[buzzforb]

Just checked that out. Looks good, although bass reflex on bass woofer

Just talkin general shape more than implementatation. basically a modified Phy baffle. I am not sure, but I think that the shape on the back of the FrugalHorn of Dave(Planet 10) affects the response. Also noticed that JohnK's new Audio Note had similar shape at base near woofer section. Could be for looks and I could be wrong. Wouldn't be the first time.

 

[Melon Head]

Thanks for mentioning it. I had not seen it before on Troel's site

 

[Melon Head]

Considering how small the baffle is I am starting to think this is actually not a bad result.
I will try and improve it further

 

[buzzforb]

Have you gotten your MCM yet? Which version did you buy?

 

[Melon Head]

I decided to go with 55-2981 and 55-2982. I could get 2x12 for the price of one 15 so it was a no brainer. Hopefully should see them soon.

 

[matevana]

I decided to go with 55-2981 and 55-2982. I could get 2x12 for the price of one 15 so it was a no brainer. Hopefully should see them soon.

The 55-2981 is the main driver in the Hestia build. I can say that after auditioning many 10" drivers in the sub $75 class, this worked the best in my design.

 

[Melon Head]

I haven't received them yet, but they look like the bargain of the century

 

[matevana]

I haven't received them yet, but they look like the bargain of the century

Did you use a promo code when you checked-out? Also, there may be some mechanical noise from the rear of the drivers since they are fairly stiff out of the box. The spiders will loosen-up in a short time and any noise should go away.