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ODougbo 15th September 2012 05:25 PM

W5-1611 SAF - The Sequel
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I see a few folks have tried different designs for the W5-1611SAF, so going to try my luck.

Since I typically dance to the beat of a different drum here is the direction I'm headed.

I had a few ideas but was inspired by plans found here (post 13):

AND other full range boxes with a W shape & flare ports. This will be a combination of both (similar to red box). The tuning will be done on the work bench by trimming the flare ports. Not easy to see in pic. but glued 4 pieces of 5" x 1/2" poplar that will be cut/fit/sanded and again, trimmed as needed.

Cones are coated - thin layer of RTV 118.

Speaker Driver:

vinylkid58 15th September 2012 06:24 PM

Following along.:wave:


fakeout 15th September 2012 06:50 PM

It looks like the slots on the side are wider. I don't know anything about modelling yet, but did you model it before doing that?

ODougbo 15th September 2012 07:02 PM

1 Attachment(s)
The slots look wider, but only 1/2".

Here is the WinIsd sim: the box volume (without sides) is 1160 square inches (19 liter).

The sim is 1/2 liter smaller (for woofer, cork and dowel).

grindstone 16th September 2012 12:42 AM

Keep forgetting to post some average numbers I took off 4 neo's maybe 14 months ago. FWIW.

fs 80.7
qts 0.5536
qes 0.7888
qms 1.8572
vas ft3 0.2441
vas L 6.9139
re 6.8442
le 0.1516
eta 88.4
BL 5.450
cms 587.7
mms 6.772

ODougbo 16th September 2012 11:10 AM

1 Attachment(s)
Fs is 20hz off? I'll check that here.

Jeff, went back to WinIsd, found out could not work vent sizes in inches - used mm and then had to trick the widow and start high and work my way down. [kept losing the response line]

Here's what I can up with two (2) vent/ports (L&R).

4 wood strips = 52mm, 13mm each.

DYNABLASTERTUNERS 16th September 2012 06:04 PM

what's the difference in sound with the coated cone?

jonparkhurst 16th September 2012 08:59 PM

following also

ODougbo 16th September 2012 09:16 PM

John, glad you are still here.

The silicon:
(1) Only use RTV112 or RTV118; they are self leveling products
(2) it will give you more bass - easy trick to lower the response
(3) the speaker guru that we used to work with, said it took the ringing out
(4) I think it makes a plastic cone sound more natural
(5) it is easy to take off if you don't like it

DYNABLASTERTUNERS 16th September 2012 09:42 PM

how do you apply it, with brush?

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