Speaker Boxes

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Project by Armand posted 01-21-2013 02:26 PM 6148 views 5 times favorited 8 comments Add to Favorites Watch

Lately I kept myself busy with building speakers. This is actually the 3rd pair since I started last year building floorstanding speakers but this time its aTransmission-Line speakers and different from the first 2 pairs which are just ordinary floorstanding speaker boxes. Been wanting to achieve deeper bass so I arrived to this design which according to google and youtube will produce deeper bass.

Made of marine-grade 3/4” plywood and stuffed with acoustic pads, wrapped with vinyl sticker and topped with 3 coats of polyurethane varnish which also sealed the seams of the stickers.

The specs:

Drivers: 6 1/2” woofer and 2 1/2” horn tweeter.

100-watts power handling, 8 ohms impedance with 2-way 2nd order Linkwitz crossovers.

The result is fantastic sound and exceeded my expectations and they are now installed in my bedroom. The first pair became my PC speakers and the 2nd pair was given away to a friend.

-- My Master is Mankind's Greatest Carpenter.

8 comments so far

View David's profile


199 posts in 3724 days

#1 posted 01-21-2013 03:03 PM

Very cool idea, I have some speakers I’ve been meaning to do this with but just never got around to it yet.

Any specific reason for the marine grade ply? It doesn’t look like they’ll be exposed to any harsh conditions so I was just wondering.

Did you size the the cavity specifically for those speakers? I’d be interested in knowing how you did it if so.

-- Perilous to all of us are the devices of an art deeper than we ourselves possess. --Gandalf the Grey

View BertFlores58's profile


1698 posts in 3982 days

#2 posted 01-21-2013 11:11 PM

Ang galing naman! You manage to construct the bass reflex with plywood. Bass reflex is very hard to control and you had given me an idea in redirecting it through a diffusing baffles. Nice idea in using the marine plywood. Some of the ordinary plywood have some hollow in between ply which sometime vibrate and will the glue used is not so strong to hole vibration. Thanks for posting.

-- Bert

View Tag84's profile


573 posts in 3717 days

#3 posted 01-22-2013 12:12 AM

They look great! wish i could listen to them, beautiful work.

-- -Thomas -

View Armand's profile


235 posts in 3971 days

#4 posted 01-22-2013 01:28 AM


I chose marine plywood over MDF because i was able to compare their sounds in my 1st and 2nd speakers.
I used 2 router templates for the woofer hole. Outside diameter first then the through hole.

Thanks Bert. So happy to combine two passions in one. I really like the bass especially when i’m outside of the room, its like having big baffles in my room.

-- My Master is Mankind's Greatest Carpenter.

View RCT's profile


89 posts in 4811 days

#5 posted 01-22-2013 03:03 AM

Nice looking boxes not sure I understand “wrapped with vinyl sticker”
and you say “2-way 2nd order Linkwitz crossovers. 40 Hz.”
You have tuned the TL to 40Hz but your cross over is
set to what frequency? for the horn.

-- "Ya but what does he know anyhow?"

View felkadelic's profile


220 posts in 3600 days

#6 posted 01-22-2013 03:09 AM

I’d love to build my own speakers someday. Can you recommend any particular sites that might help guide a newbie?

View EMVarona's profile


437 posts in 3896 days

#7 posted 01-22-2013 09:42 AM

Very impressive even if I am not familiar with speaker designs. The maze-like arrangement in is kinda interesting.

-- Ed "Real happiness is one that you share."

View doordude's profile


1085 posts in 4043 days

#8 posted 01-22-2013 11:39 AM

great workmanship.the real work is in the sound output

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