Forums - MDF wood or birch plywood ?

franksmith

Ex Member

Re: MDF wood or birch plywood ?
Reply #15 - 12/09/05 at 02:04:57

Thanks Doorman.

BTW, I received the parts today from decware.

The driver phase plug is very well made. The damping is nice also but I was a little bit disapointed to get them in their original white color.

Everywhere we see black fe206 on the website and mine aren't.

I should be able to built the cabinets in the next few weeks but I will have to call for some missing parts for the passive (atl tuning) since I only got the external surrounding.

I'll try to grap some pictures while building them.

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Corey Ex Member	Re: MDF wood or birch plywood ? Reply #16 - 12/09/05 at 02:15:07 FrankSmith, I don't understand what you mean by white color. What is white? The driver cone? Corey
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Corey Ex Member	Re: MDF wood or birch plywood ? Reply #17 - 12/09/05 at 02:17:15 Yes, the phase plug is well made! ;) Corey
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franksmith

Ex Member

Re: MDF wood or birch plywood ?
Reply #18 - 12/09/05 at 02:31:40

On the pictures of the drivers in the website, the cones are all black but mine are to original white color from fostex.

Maybe I would had need to specify ... I don't know.

Another question, for the passive I only received 4 large surround, nothing else with the kit.

Is that the only parts supplied with the alt tunning passives ? how do I built the two domes ?

I didn't receive the explanation how to built them in the kit so it's pretty hard to figure and on the website there is only a sheet for the original tunning passive assembly.

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« Last Edit: 12/09/05 at 02:33:50 by franksmith »

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Corey

Ex Member

Re: MDF wood or birch plywood ?
Reply #19 - 12/09/05 at 02:57:07

Okay,

Give me a minute and I will take a picture of the passive and tell you how to build it.

Each passive has 4 parts to it:

-large surround which glues to the wood cabinet.
-small surround which glues to the large surround.
-saucer dome which faces out and is glued to the small surround.
-flat dust cap which faces inward and is glued to the inside of the saucer dome.

The driver cone should be black. Deckert applies a special black titanium/carbon ink to it and I believe this is primarily for cosmetics.

BTW, the phase plug is a 15/16" socket.

Corey

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Corey

Ex Member

Re: MDF wood or birch plywood ?
Reply #20 - 12/09/05 at 03:23:15

Here are 2 pics of the passive. Notice how the large surround is in "standard" form meaning the surround roll faces outward.
The smaller surround is "inverted" meaning the roll faces inward, like it does on the Fostex driver:

Here is another pic from the front showing how the dome passive protrudes out from the cabinet and its shape loads the air into a hemispherical shape or radial pattern. It is like a ball sticking out into the room:

Hope this helps.

Corey

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« Last Edit: 12/10/05 at 03:50:55 by lynch »

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franksmith

Ex Member

Re: MDF wood or birch plywood ?
Reply #21 - 12/09/05 at 19:03:16

Ok so I only got the biggers surround, not the other parts.

There seem to be 2 way of building the "alt tunning" passives, some have the smaller dome way outside of the cabinet than others.

Maybe if I had all the parts in my hand I will figure it all but is there am official pdf on the website about how to built the alternative tunning ?

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franksmith Ex Member	Re: MDF wood or birch plywood ? Reply #22 - 12/09/05 at 19:05:43 Look at how theses passive are way out of the cabinet.
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Microbe Man Ex Member	Re: MDF wood or birch plywood ? Reply #23 - 12/10/05 at 03:55:14 FS, There is only one way to build the passives. I removed the last picture of the inside dust cap because it was confusing. Yes, the dome or ball should be sticking out like that. The last picture is a close up of that. Once you get your other parts you will understand and we will go from there. Take care, Corey
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franksmith Ex Member	Re: MDF wood or birch plywood ? Reply #24 - 12/10/05 at 19:14:24 Yesturday we sended an email to decware, I will wait for their answer. So far the drivers have been test (brand new from the box) in a pair of bigfunhorn with very good result after 30min to 1hr of playing time. Today I've intall them in some "burn-in" box until the cabinets are built.
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Microbe Man

Ex Member

Re: MDF wood or birch plywood ?
Reply #25 - 12/10/05 at 20:03:38

FS,

Actually those drivers look pretty sharp with the silver phase guide and white cone.

My drivers are from the early production of the HDT's and the socket and cone are painted black. This matches well with dark veneers like walnut or rosewood but I bet your drivers would look swell in maple.

Actually I bet black oak would suit your drivers best, that would look sharp.

Take care,

Corey

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franksmith Ex Member	Re: MDF wood or birch plywood ? Reply #26 - 12/10/05 at 20:52:32 I was aiming for an red wood like an african acajou. I may have access to 2mm venneer. For the mounting of the driver, should I mount them flush ?
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Microbe Man Ex Member	Re: MDF wood or birch plywood ? Reply #27 - 12/11/05 at 23:23:35 Frank, No, flush mounting isn't required. Take care, Corey
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Jason_S

Ex Member

Re: MDF wood or birch plywood ?
Reply #28 - 12/11/05 at 23:41:07

I imagine the reason the drivers aren't coated is becuase either Decware is too busy to coat them, or they might be out of coating.

Corey, I believe that the first prototypes of the alt passives that Steve built, had both surrounds facing the same way. In talking to Bob, I think he found it was easier to glue them opposite so thats the way they are now. I don't think it matters how they are assembled, if you can do it the other way, great.

FWIW, my drivers came coated, but the phase plug is silver.

Man I need to get myself motivated and finish my cabinates.

Jason

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franksmith Ex Member	Re: MDF wood or birch plywood ? Reply #29 - 12/12/05 at 03:45:56 The explanation for the coating was that the news fe206 are now melting while trying to coat them. If it's the case I may buy some old fe206 and send them for a coating.
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