First Build. Titan 48 w Lab 12.
First Build. Titan 48 w Lab 12.
Hi there!
First of all I want to thank each and everyone that posted on
http://billfitzmaurice.info/forum/viewt ... =1&t=21239
which is the thread that started all this.
Your help and advice is invaluable and thank you for spending the time to educate me on this matter.
For anyone that isn't familiar with this thread,
we're from Lisbon, Portugal, current plan is to build a couple of T48s.
We went with 12'' driver because as we have never heard a BFM design we're still open to building a T60 if we're not pleased with the design, hence having the driver we can use on both.
That being said, we've finally found some decent ply and had it professionally cut from a carpentry.
Also we chose a "weird" width, as it's 19,78 inch which for us means 50 cm which is perfect.
already marked the panels, and finished the baffle / anchor. and got panel 1 glued.
Left reducers glueing yesterday, plan to get panel 2 installed tonight.
We all work full time jobs so it's hard to get time to work on this, but we plan on doing one panel per day at the end of each work day.
I don't have a lot of photos with me, will try to upload when I get home, but anyway here's one of me attaching the screw blocks to the anchor.
Updates soon. And most likely a lot of questions. Cheers.
First of all I want to thank each and everyone that posted on
http://billfitzmaurice.info/forum/viewt ... =1&t=21239
which is the thread that started all this.
Your help and advice is invaluable and thank you for spending the time to educate me on this matter.
For anyone that isn't familiar with this thread,
we're from Lisbon, Portugal, current plan is to build a couple of T48s.
We went with 12'' driver because as we have never heard a BFM design we're still open to building a T60 if we're not pleased with the design, hence having the driver we can use on both.
That being said, we've finally found some decent ply and had it professionally cut from a carpentry.
Also we chose a "weird" width, as it's 19,78 inch which for us means 50 cm which is perfect.
already marked the panels, and finished the baffle / anchor. and got panel 1 glued.
Left reducers glueing yesterday, plan to get panel 2 installed tonight.
We all work full time jobs so it's hard to get time to work on this, but we plan on doing one panel per day at the end of each work day.
I don't have a lot of photos with me, will try to upload when I get home, but anyway here's one of me attaching the screw blocks to the anchor.
Updates soon. And most likely a lot of questions. Cheers.
Re: First Build. Titan 48 w Lab 12.
and one with the fully assembled baffle with speaker installed
Re: First Build. Titan 48 w Lab 12.
Congratualtions on starting, and on finding good wood.
One panel per day is good progress. It allows you to think about the next step, without rushing, and this will lead to an excellent product.
By the way, are you using an expanding polyurathane adhesive?
One panel per day is good progress. It allows you to think about the next step, without rushing, and this will lead to an excellent product.
By the way, are you using an expanding polyurathane adhesive?
TomS
Re: First Build. Titan 48 w Lab 12.
Tom Smit wrote:Congratualtions on starting, and on finding good wood.
One panel per day is good progress. It allows you to think about the next step, without rushing, and this will lead to an excellent product.
By the way, are you using an expanding polyurathane adhesive?
hey, yes I can take a picture of the exact one we are using, but I was assured by a retailer that it was similar to pl premium. that product isn't carried here in Portugal, and at least on the label it states mostly the same information.
waterproof, 200kg strength, polyurethane adhesive, paintable, and it states lastly that it's "made for surfaces that are under extreme vibrations".
Re: First Build. Titan 48 w Lab 12.
I've found it online,
http://www.aki.pt/produto.aspx?category ... bsIdeias-1
the website is in Portuguese but I think the brand is international so you may be familiar with it.
http://www.aki.pt/produto.aspx?category ... bsIdeias-1
the website is in Portuguese but I think the brand is international so you may be familiar with it.
Re: First Build. Titan 48 w Lab 12.
Here's a few photo updates, glued panel 3 yesterday. plus bonus baffle / panel 1 join, and underside of reducers.
Re: First Build. Titan 48 w Lab 12.
OK, we have a problem,
it seems that our baffle has about 2 mm difference in size, I guess the blade must've slipped a bit on our carpenter....
So panel 4 doesnt fit properly.
Our possibilities would be to try to cut just a bit of ply and glue inbetween ( having panel 4 slightly off panel 3) or to try and re-cut panel 4 with those 2 mm offset.
What to you think would be the best option ??
Pic attached so you'll see what I mean
it seems that our baffle has about 2 mm difference in size, I guess the blade must've slipped a bit on our carpenter....
So panel 4 doesnt fit properly.
Our possibilities would be to try to cut just a bit of ply and glue inbetween ( having panel 4 slightly off panel 3) or to try and re-cut panel 4 with those 2 mm offset.
What to you think would be the best option ??
Pic attached so you'll see what I mean
- Bill Fitzmaurice
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Re: First Build. Titan 48 w Lab 12.
Adhesive should fill that gap.
Re: First Build. Titan 48 w Lab 12.
Just apply on both panel 2 and 4? and when i get them close together the adhesive should bind right ?Bill Fitzmaurice wrote:Adhesive should fill that gap.
is it worth cutting a 2mm strip of wood just to try and stick it down the gap ? just so the gap would be less than 1mm
?
Cheers
Re: First Build. Titan 48 w Lab 12.
The adhesive should be good enough to fill the gap. I most likely would put adhesive on the bottom of the panel and install it (all joints dampened). After that, just fill in the gap with the caulk gun.
If it really bothers you, you could put a sliver of wood in there, but it's not necessary.
If it really bothers you, you could put a sliver of wood in there, but it's not necessary.
TomS
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Re: First Build. Titan 48 w Lab 12.
Lock the panels in place with jigs, fill the gap with adhesive. Make sure it's completely cured before removing jigs.jmanso wrote:Just apply on both panel 2 and 4?Bill Fitzmaurice wrote:Adhesive should fill that gap.
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Re: First Build. Titan 48 w Lab 12.
Also,
Check that the side which you are attaching the panels to is flat.
If the side has warped/bowed, it may also explain the gap.
To check, clamp or screw a big solid de warping board to the side panel, and see if the gap has closed at all.
Check that the side which you are attaching the panels to is flat.
If the side has warped/bowed, it may also explain the gap.
To check, clamp or screw a big solid de warping board to the side panel, and see if the gap has closed at all.
Built:
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...
Re: First Build. Titan 48 w Lab 12.
Hi there, I don't have any pics with me at the moment,
but when we clamped panel 4 to side panel the top gap was almost 9 mm !! we've decided to recut panel 4 entirely with that side discrepancy making it larger on one side instead of perfect rectangle.
it now sits perfectly and is perfectly leveled on all three edges (baffle, panel 3 and side panel)
we'll glue it tonight, pics soon.
also, we're just using glue and jigs instead of screws because of our inexperience with woodworking.
just a simple question. if we wanted to secure panels in place with screws, I assume I'll have to predrill the side panel but do I also pre drill the side of the panel to be secured, or just hold it in and drill the screw in ??
Cheers
edit:
also we are still thinking about what finish to apply because duratex is really hard to come by in here. I've not seen anyone using some wood varnish finish in these type of cabs: is it because it just cracks or just because not worth it since speaker is not meant to be upright ?
but when we clamped panel 4 to side panel the top gap was almost 9 mm !! we've decided to recut panel 4 entirely with that side discrepancy making it larger on one side instead of perfect rectangle.
it now sits perfectly and is perfectly leveled on all three edges (baffle, panel 3 and side panel)
we'll glue it tonight, pics soon.
also, we're just using glue and jigs instead of screws because of our inexperience with woodworking.
just a simple question. if we wanted to secure panels in place with screws, I assume I'll have to predrill the side panel but do I also pre drill the side of the panel to be secured, or just hold it in and drill the screw in ??
Cheers
edit:
also we are still thinking about what finish to apply because duratex is really hard to come by in here. I've not seen anyone using some wood varnish finish in these type of cabs: is it because it just cracks or just because not worth it since speaker is not meant to be upright ?
Re: First Build. Titan 48 w Lab 12.
I experienced the exact same issue last night with the gap between panel 2 and 4. I just loaded it up with PL and gave it a thick bead on either side of the join to be absolutely air tight.
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- Posts: 6915
- Joined: Mon Nov 28, 2011 11:12 am
- Location: Ilfracombe Queensland Australia
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Re: First Build. Titan 48 w Lab 12.
You both need to ensure the side panel is still flat.
Put a long straight edge rule on the panel as it sits to determine flatness.
Add dewarping boards if required.
You also may need to assess if panel 1 is in fact square to the side.
If you just recut panels but don't address a warped side panel, you will have more issues later with the other side and the cab being out of square/warped...
Put a long straight edge rule on the panel as it sits to determine flatness.
Add dewarping boards if required.
You also may need to assess if panel 1 is in fact square to the side.
If you just recut panels but don't address a warped side panel, you will have more issues later with the other side and the cab being out of square/warped...
Built:
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...