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17 layer Baltic birch subwoofer box.

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Project by Lindell Drake posted 07-05-2019 04:22 PM 4069 views 2 times favorited 12 comments Add to Favorites Watch

Been wanting to make this box for a very long time. Finally pulled the trigger so I could enter a car audio show. Pretty basic. Cut strips of BB to 1.5 inches and laminated them together. Wasn’t the loudest but wasn’t built to be loud. Got a ton of compliments for it so that made me happy.





12 comments so far

View SMP's profile

SMP

4946 posts in 1187 days


#1 posted 07-06-2019 12:28 AM

Nice! I used to do custom car audio installs, (as well as alarms and car phones lol). But we mainly made MDF boxes to carpet or vinyl wrap. Used the original blaubox dos program to enter Thiel & Small parameters to find airspace and port size/length. Good ol days!

View LittleBlackDuck's profile

LittleBlackDuck

8231 posts in 2102 days


#2 posted 07-06-2019 01:21 AM

Hmmm! Where do you get the ply with holes or did you have to do something extra to to get that circle?

-- If your first cut is too short... Take the second cut from the longer end... LBD

View SMP's profile

SMP

4946 posts in 1187 days


#3 posted 07-06-2019 04:38 AM



Hmmm! Where do you get the ply with holes or did you have to do something extra to to get that circle?

- LittleBlackDuck

Just go to the big box store and tell them you want to buy the hole sheet.

View Ivan's profile

Ivan

17046 posts in 4149 days


#4 posted 07-06-2019 09:50 AM

Very cool connection of woodworking and electrical engineering.

-- Ivan, Croatia, Wooddicted

View Lindell Drake's profile

Lindell Drake

94 posts in 1401 days


#5 posted 07-06-2019 10:22 AM



Nice! I used to do custom car audio installs, (as well as alarms and car phones lol). But we mainly made MDF boxes to carpet or vinyl wrap. Used the original blaubox dos program to enter Thiel & Small parameters to find airspace and port size/length. Good ol days!

- SMP

Yup back before everything was fiberglassed and when tweed was hot lol.


Hmmm! Where do you get the ply with holes or did you have to do something extra to to get that circle?

- LittleBlackDuck

I use a jasper circle jig and made 6 or passes to cut the hole and resess the sub.

Thanks everyone. This was just a temporary box really just have something for the show. The new box will be mounted on the side and will probably be sealed. Need to have room to carry lumber and have room for craft shows.

View Fresch's profile

Fresch

520 posts in 3202 days


#6 posted 07-06-2019 12:47 PM

Particle board is better for speaker in closures.

View Lindell Drake's profile

Lindell Drake

94 posts in 1401 days


#7 posted 07-06-2019 09:29 PM



Particle board is better for speaker in closures.

- Fresch

Unless you mean MDF then you are wrong. MDF and Baltic birch plywood are the 2 best materials for building enclosures. It has been argued for years and years which 2 are the best and a argument can be made for both.

View SSotolongo's profile

SSotolongo

72 posts in 978 days


#8 posted 07-06-2019 11:10 PM



Particle board is better for speaker in closures.

- Fresch

MDF.

View bigblockyeti's profile

bigblockyeti

7744 posts in 3002 days


#9 posted 07-07-2019 11:31 AM

That looks like it’s quite heavy, what sized driver is that? How many watts are you pushing to it?

-- "Lack of effort will result in failure with amazing predictability" - Me

View SSotolongo's profile

SSotolongo

72 posts in 978 days


#10 posted 07-07-2019 02:08 PM

Nice design. Kind of tragic that its in the back of a car where such a nice design is kind of hidden. As I look into the box I notice that you don’t have a lot of bracing inside. That can present some issues for you with rattling. I haven’t built one for a car, but I’ve been on AVSForum.com and designed one for my home theater. Interior bracing is important to prevent rattling by the box. I am sure there are some designs for cars either there or on another page dedicated to car stereo systems. Might be worth a look for you.

View Lindell Drake's profile

Lindell Drake

94 posts in 1401 days


#11 posted 07-13-2019 06:27 AM



That looks like it s quite heavy, what sized driver is that? How many watts are you pushing to it?

- bigblockyeti

It’s very heavy for its size. It’s a JL 10w6v3. Its wired at 2 ohms so about 350-400. Amp is rated at 800 at 1 ohm.

View Lindell Drake's profile

Lindell Drake

94 posts in 1401 days


#12 posted 07-13-2019 06:33 AM

Oh I am a firm believer in bracing in almost all boxes I build. With how narrow this box is and the 1.5 inch walls I was not to worried about it. Also it was build mainly for just this show and sort of a prototype.


Nice design. Kind of tragic that its in the back of a car where such a nice design is kind of hidden. As I look into the box I notice that you don t have a lot of bracing inside. That can present some issues for you with rattling. I haven t built one for a car, but I ve been on AVSForum.com and designed one for my home theater. Interior bracing is important to prevent rattling by the box. I am sure there are some designs for cars either there or on another page dedicated to car stereo systems. Might be worth a look for you.

- SSotolongo


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