My New Audio Nirvana Drivers

[BudP]

Well, I think lead is fine for plates, glasses and sporks, but lining cardboard boxes with it? Best to just dig a big hole and line that with the lead, fill it back over and keep the unwelcome E Rays from disturbing the brain.... I understand tin foil hats work well too....

Bud

 

[Melon Head]

Well, I think lead is fine for plates, glasses and sporks, but lining cardboard boxes with it? Bud

I was saying I am NOT lining cardboxes.
Anyway, never mind, its really not worth debating about. I am tired of it.
I just finished writing a 100 page report characterising the microstructure of 3 steels. The last thing I want to do is talk about that crap.
I come here for fun

 

[planet10]

I am just trying to apply what Budp is suggesting to try out

It may be worth noting that Bud's current speakers came out of our "labs". It will be interesting to hear how the ones we are currently building for him work (Bud's design for a 2-way naked OB to sit on top of the FonkenWoofTLs. They will be heading south with one of the guys from Seattle coming up for diyFEST.

dave

 

[planet10]

the microstructure of 3 steels.

Done right steel should make very good speaker encloures.

dave

 

[Melon Head]

Yes and many other metals also

 

[Melon Head]

Bud's design for a 2-way naked OB to sit on top of the FonkenWoofTLs.

dave

Sounds good.
What frequency range does the fonken cabinet cover?

 

[planet10]

Bud set up the XO, IIRC the Fonkens (that is what sits on top of the FonkenWoof) operate from 200 Hz up.

dave

 

[Melon Head]

Hey Dave.
I want to do something with my Radian 475PB and either 2x10 or 2x15 (most likely 2x10}. An Onken cabinet would be nice to try

 

[Melon Head]

Bud set up the XO, IIRC the Fonkens (that is what sits on top of the FonkenWoof) operate from 200 Hz up.

dave

I absolutely love bamboo ply

 

[Melon Head]

Just looking at the frequency response with ports and there is quite a bit of improvement in bass extension as one would expect.
I will upload the results later.

 

[Melon Head]

Hey Dave
Has anyone been nuts enough to make an Onken out of Aluminium (thats aluminum for you American gentleman)

 

[chrisb]

It may be worth noting that Bud's current speakers came out of our "labs". It will be interesting to hear how the ones we are currently building for him work (Bud's design for a 2-way naked OB to sit on top of the FonkenWoofTLs. They will be heading south with one of the guys from Seattle coming up for diyFEST.

dave

first dry fit of drivers - Lowther PM6A (always nervous handling that unit in workshop area) & Eminence Delta 8B

final detailing when the get into master Buds' hands

 

[buzzforb]

Is the midrange there to alleviate some of the excursion strain that the FR would see in an OB setup? Where are you crossing it? Also, will the thick spine mess with the backwave some?

 

[chrisb]

Is the midrange there to alleviate some of the excursion strain that the FR would see in an OB setup? Where are you crossing it? Also, will the thick spine mess with the backwave some?

excellent questions - as the builder I can only surmise that clearly, "yes" to the first, answers to the others by the designer - in this case Bud

my intuition is that while at 2.25" thick ( 3 layers of 3/4" bamboo plywood) the spine is narrower than the shadow of the both motor structures, and is as open as it can be and still provide the structural support and aesthetics Bud had envisioned, there still remain some surfaces parallel and close to the plane of the driver diaphragms that could cause some early reflection artifacts

but then again looking at the back side of this array while I'm typing this, the motor and support frames of both drivers (particularly the Eminence) include reflecting surfaces in even closer proximity to the cones

so time will tell - and if anyone could resolve any audible issues with these, it'd be Mr P

 

[planet10]

out of Aluminium

We are Canadian, aluminium & aluminum are interchangable,

Not that i know off. I have had offers to do aluminum baffles for them thou.

dave

 

[Melon Head]

Depending on the total cost I might make a AN-Ken out of both bamboo ply and aluminium just for fun

 

[Melon Head]

excellent questions - as the builder I can only surmise that clearly, "yes" to the first, answers to the others by the designer - in this case Bud

I was guessing it was more about getting a flat response and maintaining efficiency without using a whole heap of passive eq components which rob you of efficiency

So this sits on an Onken which takes care of the bass, is that right?

 

[Melon Head]

first dry fit of drivers - Lowther PM6A (always nervous handling that unit in workshop area) & Eminence Delta 8B

final detailing when the get into master Buds' hands

I am not sure why you wouldn't make the baffle 1" thick and make the bracing thinner (say 1"). I don't understand why it needs to be that thick, even 3/4" brace would probably be adequate.

Will there be an audible improvement going from 3/4" to 2.25" bracing knowing you are increasing the risk of audible reflections starting to become a problem?

 

[Melon Head]

excellent questions - as the builder I can only surmise that clearly, "yes" to the first, answers to the others by the designer - in this case Bud

I forgot to say it looks very nice, and I am sure it will sound very impressive.

 

[tsiros]

isn't it generally better to go with slightly thinner baffle/enclosure, based on the idea that it is much easier to deaden a lively enclosure rather than liven up a dead enclosure?
1" baffle isn't it very thing? for FR anyway that don't have high output very low?