18" scoops build advice needed please..
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URL: https://forum.speakerplans.com/forum_posts.asp?TID=12870
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Topic: 18" scoops build advice needed please..
Posted By: bill-77
Subject: 18" scoops build advice needed please..
Date Posted: 21 November 2007 at 9:11pm
hi all forum members i,m planning to build x6 standard scoop box,s old school style...what i would like to know from the exsprienced in forum is how many 8ft by 4ft sheets of ply wood will i be needing for a single scoop box? i will be using the measurments from my other x2 scoops...... and would the standard wicks ply wood be ok to use ? £22 a sheet....or will i need to use the exspensive marine birch ply wood ?.....i have built small scale box,s in the past but nothing to what i,m in the process of doing ,,so i have some exsprience..tips and suggestions from the the exsprienced would be appreciated many thanks regards bill  ------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Replies:
Posted By: TONY.A.S.S.
Date Posted: 21 November 2007 at 9:23pm
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Just use muti-laminate ply. Normal baltic birch isn't marine ply. I assume you have the cutting list, so draw your parts on to a scaled down 8x4, and then you'll have the answer. It'll be a good way of familiarizing yourself with the forth comeing project. ------------- http://www.facebook.com/tony.rossell.3" rel="nofollow - http://www.facebook.com/tony.rossell.3 |
Posted By: bill-77
Date Posted: 21 November 2007 at 9:32pm
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nice one tony a,s,s i appreciate your advice ....tony i heard alot of people use car chip spray to spray the cabs,,whats your opinion on this ? ..my other x2 scoops are painted with standard paint,,,what would be the best paint to use? somthing durable and long lasting thanks bill ------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: LostGrayCat
Date Posted: 21 November 2007 at 10:43pm
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http://www.speakerplans.com/forum/search_results_posts.asp?SearchID=20071121224139&KW=speaker+paint - http://www.speakerplans.com/forum/search_results_posts.asp?SearchID=20071121224139&KW=speaker+paint |
Posted By: TONY.A.S.S.
Date Posted: 21 November 2007 at 11:07pm
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As a manufacturer, I've always stuck to pretty std. stuff In my position, I've always had to concern myself with production. Which means easy access from a reputable supplier, and buying in quantity always gets a good price. There could be some amazing material out there, that could used in a one off situation. If you went into production with car chip paint to do it properly would cost a fortune with the specialized equipment. It's unlikely that Fords use a can. ------------- http://www.facebook.com/tony.rossell.3" rel="nofollow - http://www.facebook.com/tony.rossell.3 |
Posted By: bill-77
Date Posted: 22 November 2007 at 9:47am
thanks guys i,m gonna give this project a try lol see how i get along ,,,i,ll stick to convential d.i.y paint to keep the cost low as possible...i was reading in a another forum some one suggested to use chip board and build a prototype....i might just do that build x1 to get familiar and inprove my skills,,, lol well if i get stuck i,ll let you guys know ,,thanks for advice and guidence regards bill..------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: Static Age
Date Posted: 22 November 2007 at 10:23am
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i'm close to finishing off a pair of scoops myself at the moment, you will use the best part of two 8x4 sheets of ply per cabinet as the sides of scoops are quite large. dont forget to budget for the thinner sheets of ply you need to form the actual scoop part.
scoops are fairly easy to build as there are no particularly difficult cuts required, so i wouldnt bother with a chip board proto type.
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Posted By: bill-77
Date Posted: 22 November 2007 at 3:15pm
------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Static Age wrote:Posted By: Static Age
Date Posted: 22 November 2007 at 4:00pm
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i will be fitting Fane Colossus 18XB's in my scoops to match my other scoops.
here is a handy tip from Rog regarding the scoop section...
'To make the curved part of the horn flare bend a piece of 3 mm plywood around some battens that have been glued and screwed to the side walls to form the curve, then glue and nail another piece of 3mm plywood on top of the first piece. Keep doing this with another 4 pieces of 3 mm plywood until you have all 6 pieces glued and nailed together. The finished curve should now be 18 mm thick. For a better job use 4 pieces of 18 mm ply to make the curved former. Use a jigsaw to cutout the curve from the 18 mm ply and glue and screw them in place evenly spaced across the width of the curve. The 2 outer most formers should be positioned right against the cabinet walls.'
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Posted By: bill-77
Date Posted: 22 November 2007 at 4:24pm
 nice build static,i see what you mean by over lapping the plywood sheets to make a solid rigid scoop very nice...lol i cant wait to get mine started,,,thanks again static for advice and tips much apreciated regards bill------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: Static Age
Date Posted: 22 November 2007 at 4:30pm
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Bill, thats not my build. that pic is a super scooper built by Dom, the pic is taken from the readers projects section on the sepakerplans home page, see...
http://www.speakerplans.com/index.php?id=dom18sc - http://www.speakerplans.com/index.php?id=dom18sc
I posted the pic as an example on how to assemble the 'scoop' part.
my scoops are currently at a similar stage but minus the scoop, i will get some step by step pics up when i have finished the project.
Dan. -------------
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Posted By: bill-77
Date Posted: 22 November 2007 at 5:02pm
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oh ok sorry thought that was your build lol ,,,i was wondering that looked very diffrent from the old school classic scoop lol ..static those pictures of yours would be very handy and educational for beginner project builders like my self ..will be looking forward to seing them ------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: Static Age
Date Posted: 22 November 2007 at 5:34pm
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i have a table saw so i cut all the panels on that.
my scoops are also an older style design, similar to the old JBL scoop but 18" version. -------------
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Posted By: bill-77
Date Posted: 22 November 2007 at 5:54pm
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nice static thats so handy having your own tablesaw...i was thinking of using a jigsaw but thats gonna be messy cut outs all uneven and wonky lol so i,ll leave it to the cutting merchants ..static thanks again for sharing your knowledge regards bill ------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: Jhodas
Date Posted: 22 November 2007 at 6:57pm
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Don't use a jigsaw . I've never built a speaker in my life but I can tell you from my (extremely limited) woodworking experience that accurate miters are near as damnit impossible with a jigsaw. Read point one on this page. http://www.speakerplans.com/index.php?id=guide2 - http://www.speakerplans.com/index.php?id=guide2 From Mr. Mogale himself.  ------------- Until the Lions have their own historians, tales of hunting will always glorify the hunter. |
Posted By: bill-77
Date Posted: 22 November 2007 at 7:26pm
 lol i know crazy idea especially for building x6 scoops ...its gonna have to be the cutting merchants ,,dont wanna waste the exspensive ply wood lol thanks jodhas for your advice and forum link very educational ------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: Static Age
Date Posted: 23 November 2007 at 1:28pm
here are the pics..
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Posted By: Static Age
Date Posted: 23 November 2007 at 1:28pm
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Posted By: Static Age
Date Posted: 23 November 2007 at 1:30pm
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Posted By: Static Age
Date Posted: 23 November 2007 at 1:31pm
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Posted By: Tekasis
Date Posted: 23 November 2007 at 2:26pm
| Looking good so far! Are you not planning to add the triangle piece at the bottom of the rear panel? |
Posted By: Static Age
Date Posted: 23 November 2007 at 3:17pm
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thanks, Tekasis.
which triangle piece are you reffering to, do you mean the panel immediateley behind the driver? -------------
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Posted By: Saul
Date Posted: 23 November 2007 at 3:51pm
...festool...
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Posted By: Mark James
Date Posted: 23 November 2007 at 4:04pm
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mitre with a jig saw?????? WTF? lol if tats all you got then id say youd be better trying to sand th angle than cutting it, and i wouldnt recommend sanding either...... ------------- insert silly sentence here |
Posted By: bill-77
Date Posted: 23 November 2007 at 7:15pm
....nice pictures... how much do those circuler bench saw,s cost? i might be better of getting 1.... it would save me alot of time and hassle making trips to the cutting merchant...and it will come handy for other projects...saul mentioned somthing about festool is that a brand of circuler saw ?....i,m only familiar with automotive tools like snap on,mack,britool,,,,or could i use the hand held circuler saw those are quite cheap..saw them in wickes when i went to enquire about the plywood? thanks ------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: bill-77
Date Posted: 23 November 2007 at 7:23pm
,,,,i,ll probally invest in a bench saw or those hand held circuler saws by makita..i,m just getting my self prepared with what ever essential tools i might need to make this project simple and efficient as possible ------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: Static Age
Date Posted: 23 November 2007 at 7:41pm
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a hand held circular saw would do the job, though achieving some of the angled cuts is alot easier with the table saw.
i guess you have to decide exactly how much building you intend to do before you invest in tools but basic table saw's are reletively cheap.
http://home-garden.search.ebay.co.uk/table-saw_DIY-Tools_W0QQfromZR34QQsacatZ631 - http://home-garden.search.ebay.co.uk/table-saw_DIY-Tools_W0QQfromZR34QQsacatZ631
I am lucky as the table saw i use belongs to a friend, i store it in my lock up for free in exchange for the permission to use it. its been a great help in building cabs & i would be more than happy to replace the blade for him if it ever needs it.
i will post some more pics up as the build pogresses.
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Posted By: bill-77
Date Posted: 23 November 2007 at 8:32pm
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hey very impressed your project has given me more motivation...i reckon a table saw will be to major for what i be needing it for.....i think the hand held circuler saw would be ideal as after i,ve built the scoops and a few tops i wont be using it much...keep up the good work static....i,ll be looking forward for the finished pictures...lol give me a couple of months for my first completion and i,ll post a few of my project pictures....well i see how long the fist takes me then the others would be become easier to build...thanks again staic for pictures and advice regards bill ------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: Static Age
Date Posted: 23 November 2007 at 9:04pm
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you will find once you get going that things progress quickly. i only started on my scoops on Monday night, been working on them a couple of hours a day. -------------
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Posted By: LostGrayCat
Date Posted: 23 November 2007 at 10:27pm
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Get a table saw, well worth the investment. But the problem with tools is like getting the sound bug. It never ends. |
Posted By: bill-77
Date Posted: 24 November 2007 at 5:08pm
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hi lostgraycat i was comparing price diffrences between the hand held saws and bench saws and thers not much diffrence in price really so it will be a bench saw ,,more versitile thanks for the tip .....just a matter of getting the saw and wood,screws,glue ect time comsuming,,i,ll be abe to only spend a few hours a day buiding due to work commitments and children ,,,but the key to a successful finish is patience,i,m not in no rush really as i have x2 scoops which are doing the job for now... lol and yes this is a very addictive and exspensive hobby or career to undertake but i,ll get there slowly lol thanks guys for the support.. ------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: boycey
Date Posted: 24 November 2007 at 5:52pm
check this out: http://srforums.prosoundweb.com/index.php/m/236035/25637/0///19929/#msg_236035 - http://srforums.prosoundweb.com/index.php/m/236035/25637/0///19929/#msg_236035 sorry marjan but your handiwork is pretty awesome. http://srforums.prosoundweb.com/index.php/fa/10730/0/19929/ - ------------- the only thing more dangerous than a person who doesn't give a f**k is a person who gives a sh*t. |
Posted By: bill-77
Date Posted: 24 November 2007 at 6:44pm
....Has any body on forum built large scale box,s like shown in link with just using a jigsaw ? would be good to know regards bill..------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: Static Age
Date Posted: 24 November 2007 at 8:58pm
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few pics from todays build session.
Holes for speakons & bolt fittings for castors, there are M8 T nuts on the inside.
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Posted By: Static Age
Date Posted: 24 November 2007 at 9:02pm
on the left is the scoop i copied the dimensions from
Below, the new scoops minus the 'scoop'
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Posted By: LostGrayCat
Date Posted: 24 November 2007 at 9:41pm
| Was wondering if there's enough room to add extra material so the wheels don't rip out? |
Posted By: Static Age
Date Posted: 24 November 2007 at 10:08pm
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do you think that could happen? i mainly do indoor gigs so i dont have to wheel the cabs over ruff ground. -------------
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Posted By: bill-77
Date Posted: 24 November 2007 at 10:23pm
 and thanks for posting your project pictures for all off us to see and admire...static will you be painting yours or spraying them ?------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: Static Age
Date Posted: 24 November 2007 at 10:33pm
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thanks for the positive comments.
to get them to the stage they are in the pic above took about 16 hours, next step is to cut holes for handles & build the scoop bit. i have made a template for the curved formers so it shoudlnt take long.
I'm painting them with black aldcrofts, i dont have the facility to spray the aldcrofts on.
more pics to come as the build comes to a finish. -------------
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Posted By: bill-77
Date Posted: 24 November 2007 at 10:40pm
regards bill------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: Mark James
Date Posted: 25 November 2007 at 11:11pm
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ok maybey you can mite cut with a jigsaw, howether i personaly couldnt and doubt some one who is not realy skilled could, and i certainly wouldnt recomend it. @static age, nice looking work there!!! i love seeing build pics. it is just so nice to see a loudspeaker halfe built, thank you for sharing...... ------------- insert silly sentence here |
Posted By: Tekasis
Date Posted: 26 November 2007 at 9:37am
I was referring to that panel, but then realized you & Bill are building standard scoops & not supers!
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Posted By: Static Age
Date Posted: 26 November 2007 at 10:41am
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yep old skool style scoops Tekasis. if i didnt already own a pair like that then i would have built supers but i wanted matching cabs.
@Markk, thanks for the positive comments! -------------
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Posted By: levyte357
Date Posted: 26 November 2007 at 5:25pm
But I hear supers are a lot more work than Fane or JBL, and not that much difference in sound, just sturdier and heavier due to bracing. Static those look like JBL's but maybe bit wider etc (Bit like my mods), Which drivers have you heard in those, and what do they sound like? ------------- "Who am I? I'm the guy who does his job.. You must be the other guy". |
Posted By: Static Age
Date Posted: 26 November 2007 at 5:51pm
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they are very similar internally to the JBL scoop. the front chamber size is not much different to the super scooper.
my original pair are loaded with Fane 18XB's & they sound very good, loud & have a nice warm tone to the bass.
thats why i have built this new pair, i already have another pair of 18XB's to go in them.
i havent tried tham with any other drivers, i do have some 1000watt RCF (i cant remember the model) which might be worth a try. -------------
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Posted By: levyte357
Date Posted: 26 November 2007 at 6:41pm
My mods should result in lower extension, at slight expense of throw. How much would would you charge me matey, to do a rough prototype in chipboard?    ------------- "Who am I? I'm the guy who does his job.. You must be the other guy". |
Posted By: minaximal
Date Posted: 26 November 2007 at 9:38pm
well, i wouldn't bother without a big pot of filler, unless i had...  a foot plate for the jigsaw to fit on the guide rail.. but then the circular saw is quicker. ------------- Subs + Barges = :) http://www.metaacoustics.com" rel="nofollow - www.metaacoustics.com |
Posted By: Static Age
Date Posted: 27 November 2007 at 10:58am
thats an interesting prospect, chip borad isnt the best stuff to work with but it is very cheap for a 8x4 sheet.
let me finish of the current scoops then i will get in touch via pm & we can arrange something mate.
edit: Levyte check ya PM's -------------
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Posted By: Father-Francis
Date Posted: 27 November 2007 at 12:00pm
Nice one Lev ------------- Music is the strongest form of magic.(+45 31879997)blakmanpro@gmail.com, foa@sweetboxaudio.dk |
Posted By: Tekasis
Date Posted: 27 November 2007 at 1:36pm
Over the years, we've come across scoops which actually sound better in chipboard & MDF than ply! Not too sure if this all depends on the type of cab.
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Posted By: tweeter box
Date Posted: 27 November 2007 at 2:03pm
Wicked build pics Static 
Scoops look well nice, bet they gonna sound the buisness aswell. ------------- PRECISION SOUND SYSTEM. Feeding the peoples needs for Roots Music. Strictly premium grade reggae and dub steppers from the early 70's to present day. |
Posted By: bill-77
Date Posted: 27 November 2007 at 5:04pm
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hi all been buisy doing over time to pay for the materials needed..just managed to get a second hand bench saw for 60 pounds from ebay...scary piece of kit to use that 10 inch blade looks and sounds dangerous when powerd up lol ..i thought using my airtools at work where bad enough...got x2 sheets of ply and just need to measure and mark then cut.. gonna ask me nephew to come and assist coz that sheet of ply is dam heavy......static did you join the x2 8x4 plywood sheets together then cut them or cut them one by one ? thanks regards bill ------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: Static Age
Date Posted: 27 November 2007 at 5:31pm
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i cut each 8x4 sheet seperately. plan your cuts carefully to get the most out of your sheets, you will find the scoop side panels are the biggest panels to cut out. -------------
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Posted By: bill-77
Date Posted: 27 November 2007 at 5:43pm
------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: tommysb
Date Posted: 27 November 2007 at 8:29pm
| Just take things slow, do a panel or 2 in each session and don't rush! |
Posted By: bill-77
Date Posted: 27 November 2007 at 8:38pm
...------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: Static Age
Date Posted: 29 November 2007 at 1:50pm
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i had a little break from the scoop build since the last lot of pics, but last night i put a couple of hours work in..
heres the formers for the actual scoop bit. i decided to use the curved formers as recomended in the super scooper plan, i also added a 50mm wide horizontal brace which i mounted into the curved formers via cut outs for extra strength.
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Posted By: adambomb
Date Posted: 29 November 2007 at 2:06pm
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fill it with sand! ------------- http://www.freespeakerplans.com" rel="nofollow - www.freespeakerplans.com |
Posted By: tweeter box
Date Posted: 29 November 2007 at 2:19pm
Hi adam could u explain this pls?
------------- PRECISION SOUND SYSTEM. Feeding the peoples needs for Roots Music. Strictly premium grade reggae and dub steppers from the early 70's to present day. |
Posted By: mykey
Date Posted: 29 November 2007 at 2:48pm
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not practical
very good static using the ribs
we did that in the XXL's and doing the same in the DubSubs
you should have left the back off though so you can see if there are any gaps to fill
in the dubsub its ok because of te piece missing for the castors
will be proper when you've finshed them
good to have the photo history of the build as well when you go to sell them ------------- ......just all them hanging there like giant bananas. |
Posted By: Static Age
Date Posted: 29 November 2007 at 3:17pm
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i could see if there were any gaps by looking through the handle cut outs on the bottom.
cheers for the positive coments mykey -------------
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Posted By: bill-77
Date Posted: 29 November 2007 at 5:09pm
....just about got my pieces cut lool------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: Static Age
Date Posted: 29 November 2007 at 9:44pm
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pics from tonights build session. scoops now in, battens for grills fitted & screw holes filled.
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Posted By: mykey
Date Posted: 01 December 2007 at 3:17pm
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you gonna put a nice cross brace in and why did you miss out the dog leg? (triangle piece) battens around the mouth are a bit large though?
i'll do you a drawing of what i think you should have done and a few other members mite want to do it as well , its what i used to do on my other scoops ------------- ......just all them hanging there like giant bananas. |
Posted By: Static Age
Date Posted: 01 December 2007 at 4:42pm
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i will be fitting a cross brace in the mouth, i left it out to make it easier to get in & paint the inside.
the triangle piece isnt present on the scoops i copied so i didnt put it on these.
again the battens are the same size as on my other scoops, they do look quite big but they dont stand out as much when painted.
Mykey, thanks again for the constructive comments, i would like to see your drawing.
like i said my other scoops do not have tha dog leg (triangle bit) & they sound great.
does it really have much of a difference to the sound? if so i might do with/ without comparrison test with some working cabs.
Dan. -------------
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Posted By: bill-77
Date Posted: 03 December 2007 at 8:29pm
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..and thanks again for making the effort to post your project pictures on here ....been a very buisy dude just about got the first finished thanks for the guidence and tips stactic age ..will be posting very soon.. ------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: Mark James
Date Posted: 03 December 2007 at 8:42pm
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pics then bill? lol... ------------- insert silly sentence here |
Posted By: bill-77
Date Posted: 03 December 2007 at 8:50pm
..not easy for a newby lol getting there though  ------------- WISDOM IS BETTER THEN SILVER AND GOLD!! |
Posted By: ToNy MoNtAnA
Date Posted: 11 December 2007 at 1:30am
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Love how you did the bracing and battons, Static Age. |
Posted By: APSUS
Date Posted: 17 January 2026 at 10:02pm
| Can I get away with using 3mm for the scoop and use expansion foam behind the scoop or would that be too weak? Could I use fiber glass on the scoop to make it stronger? Or just use 2 x 18mm birch ply panels angled. |
Posted By: njw
Date Posted: 17 January 2026 at 11:39pm
3mm is fine if you layer a few pieces on top of each other with plenty of glue inbetween, I've done lots of cabs like this, you can get away with 6mm if the radius isn't too tight. If you build around a former it makes for a super strong cabinet too.
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Posted By: BadmanSS
Date Posted: 24 January 2026 at 2:49pm
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I'm new to this and would love to build my own but don't know where to start. I love this build but it looks intimidating. Do you happen to have the measurements. I like this and the golden horn design, but not sure what direction to go. Any help would be highly appreciated. I don't mean to hijack your thread but would greatly appreciate your help because it seems like you were in the same boat as me recently. I asked around for ppl to build for me but their prices are ridiculous.
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