Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

MARTELLO-2, a mini-tower from a single 2' x 4'
MARTELLO-2, a mini-tower from a single 2' x 4'
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 20th September 2012, 07:16 PM   #11
chrisb is offline chrisb
diyAudio Member
 
Join Date: Aug 2002
Location: victoria BC
Quote:
Originally Posted by loninappleton View Post
Another possibility for my CHR 70.

Can you point to a dimensional drawing?

I think this is based on the P10 MicroTower series, link to the full plan set is temporarily broken - when fixed should either be

frugal-phile.com/...microTower-maps-150909.pdf


or Dave can edit with new URL
__________________
like my mind, this space intentionally blank
  Reply With Quote
Old 20th September 2012, 09:16 PM   #12
planet10 is offline planet10  Canada
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
MARTELLO-2, a mini-tower from a single 2' x 4'
When i was fixing the link i tool the opportunity to upload a version of the plans with a few minor updates:

http://frugal-phile.com/boxlib/micro...aps-290412.pdf

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 20th September 2012, 11:49 PM   #13
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Location: Waterloo, ON or Herefordshire UK
MARTELLO-2, a mini-tower from a single 2' x 4'
yes, much has been gleaned from those plans - cross-sectional area & line length for example.

I'll post some dimensions once I've got the drawing ready.
Attached Images
File Type: png MLTL rev2.png (16.2 KB, 719 views)
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  Reply With Quote
Old 21st September 2012, 12:38 AM   #14
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Location: Waterloo, ON or Herefordshire UK
MARTELLO-2, a mini-tower from a single 2' x 4'
Here's how I might cut the parts from a single 2' x 4' sheet.

Note that with the mitre joints I will cut them at 45 degrees out of the sheet. This means that the parts can be sized differently (larger) than if I were to make a straight cut and then make the 45 degree edges afterwards (which would waste wood). Maybe this sounds complicated, but it's not - it just means you can scale the depth of the box slightly (1cm) depending on how you cut the pieces out and the size of the kerf of your saw. For me, the kerf is 2mm and things work out nicely as you can see. This is preliminary, the main pieces are good but I may use some of the left-overs to decorate the 'feet', create some cleats for the base, add some internal bracing pieces or whatever.

p.s. if you plan to use the planet10 drawings some versions of them have a formula for calculating the length of the port - the formula is not applicable to the MLTL that is described in this thread.
Attached Images
File Type: png MLTL rev2.png (13.8 KB, 718 views)
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  Reply With Quote
Old 21st September 2012, 01:57 AM   #15
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Location: Waterloo, ON or Herefordshire UK
MARTELLO-2, a mini-tower from a single 2' x 4'
Here are the basic dimensions, front view on left, side view (right facing) on the right. The port tube is not shown and I plan on a bit of trial and error to finalize it - but the design size is 50mm diameter PVC pipe, 14cm long. The driver support brace is shown in earlier posts as having a semi-circular cut out to clear the driver magnet - in reality this wants to be shaped so as to support the magnet and brace it to the surrounding box panels. I may decide to make a semi-circular clearance shape like shown, install it along with the driver and then install an adjustable piece to brace the magnet, to allow for different driver options after construction is finished.


Remember, the exact depth of the box (width of side panels) will depend on how the mitre joints are cut. Plywood thickness is 11.5mm.
Attached Images
File Type: png Front and Side dimensions.png (19.8 KB, 710 views)
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.

Last edited by Bigun; 21st September 2012 at 02:06 AM.
  Reply With Quote
Old 24th September 2012, 02:53 AM   #16
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Location: Waterloo, ON or Herefordshire UK
MARTELLO-2, a mini-tower from a single 2' x 4'
well I haven't found it easy making the 45 degree mitre cuts using a hand-held circular saw with pieces clamped on a workbench in my driveway, using a bag of salt for additional ballast. Most the pieces are now cut but test fitting shows that the mitre joints are not going to be precise enough for strong air tight results. Fortunately, I have a 45 degree edge trimmer bit for my hand-held router so I can clean up the edges - but it may be a bit laborious. This is what DIY is all about !
Attached Images
File Type: jpg holding workpiece.JPG (96.7 KB, 685 views)
File Type: jpg cut pieces.JPG (98.4 KB, 574 views)
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  Reply With Quote
Old 29th September 2012, 12:18 AM   #17
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Location: Waterloo, ON or Herefordshire UK
MARTELLO-2, a mini-tower from a single 2' x 4'
I've routed the 45 degree edges to tidy them up and glued up the inner baffles to the front baffle...
Attached Images
File Type: jpg inner baffle.JPG (40.2 KB, 194 views)
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  Reply With Quote
Old 30th September 2012, 01:59 AM   #18
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Location: Waterloo, ON or Herefordshire UK
MARTELLO-2, a mini-tower from a single 2' x 4'
the sides are lined up with the front baffle and the corners taped to hold them in place - then the glue is placed along the faces of the join and the sides are folded up to 90 degrees - the tape clamps the corners whilst the glue dries

the difficulty comes when gluing on the tops, I don't have clamps of the right size so we use the old standby, salt bags...
Attached Images
File Type: jpg lined up for gluing.JPG (23.9 KB, 193 views)
File Type: jpg after gluing.JPG (47.3 KB, 187 views)
File Type: jpg gluing lids.JPG (105.4 KB, 240 views)
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  Reply With Quote
Old 30th September 2012, 03:13 AM   #19
KyleinCowichan is offline KyleinCowichan  Canada
diyAudio Member
 
KyleinCowichan's Avatar
 
Join Date: Dec 2010
Location: Cowichan Bay, BC
I nearly lost my mind doing some mitres this summer. You are brave to even try with a skill saw!

Kyle
  Reply With Quote
Old 30th September 2012, 03:54 AM   #20
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Location: Waterloo, ON or Herefordshire UK
MARTELLO-2, a mini-tower from a single 2' x 4'
I think I was just too dumb to know better, I won't be using mitres again in a hurry !!!!
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  Reply With Quote

Reply


MARTELLO-2, a mini-tower from a single 2' x 4'Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Martello enclosure for FR88EX Bigun Full Range 218 30th January 2017 01:59 PM
Martello Fr88ex awqawq Full Range 6 26th August 2012 11:24 PM
2' x 2' x 4' TH sub feasibility? aceinc Subwoofers 14 29th October 2010 09:12 PM
Micro Mini Desktop Tower Plans roadsterdriver Full Range 24 18th September 2009 06:42 PM
Small Speakers 4' Krisfr Parts 11 7th September 2009 12:44 AM


New To Site? Need Help?

All times are GMT. The time now is 04:02 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki