12PI horn
Printed From: Speakerplans.com
Category: Plans
Forum Name: Other plans
Forum Description: Discussion / Questions about all the other plans
URL: https://forum.speakerplans.com/forum_posts.asp?TID=37581
Printed Date: 27 March 2026 at 8:46am
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: 12PI horn
Posted By: dj-panoramix
Subject: 12PI horn
Date Posted: 28 March 2010 at 3:27pm
| i did get the plan from wayne's forum, but all is in inches, anybody did work it in mm ? |
Replies:
Posted By: djeddie
Date Posted: 28 March 2010 at 4:13pm
|
Just times the inches by 25.4 surely.
------------- Chas n Dave : it's like Drum and Bass but with beards. E=mc² ±3dB |
Posted By: cravings
Date Posted: 28 March 2010 at 6:11pm
| look for a good online calculator that'll accurately do the full lengths for you.. just multiplying the single inch by 25.4 (not really saying you're wrong eddie..).. that is a rounded down number and may put lengths out by a few mm by the end.. if that makes sense. |
Posted By: Saul
Date Posted: 28 March 2010 at 6:24pm
| 25.4 is accurate enough |
Posted By: dj-panoramix
Date Posted: 28 March 2010 at 6:51pm
|
i allready done that, but the problem is that give me strange lenght like 639,445 so if i take let say 639,4 and make X piece like that i get Z mm wrong at the end of the thing, you know what i mean ?craving, more info about that online calculator you're talking about ? i just found some who make x25,4. |
Posted By: _djk_
Date Posted: 29 March 2010 at 2:04am
|
Buy a tape with both inches and mm on it, cost you about $6.
------------- djk |
Posted By: cravings
Date Posted: 29 March 2010 at 2:13am
|
ok yeah fair enough i can't find one that'll do closer than that. i'm just sure i've heard of people being caught out a bit by calculating long distances based on one rounded down unit.
i'm sure if the guys say 25.4 is good enough it definitely is. |
Posted By: dj-panoramix
Date Posted: 29 March 2010 at 11:52am
do you have a link where they sell that ? i can't found that here.
|
_djk_ wrote:Posted By: rich, ind.st
Date Posted: 29 March 2010 at 1:33pm
|
http://www.screwfix.com/prods/47668/Hand-Tools/Measuring/Tape-Measures/Forge-Steel-Tape-Measure-5m - http://www.screwfix.com/prods/47668/Hand-Tools/Measuring/Tape-Measures/Forge-Steel-Tape-Measure-5m
------------- music is god |
Posted By: Quantum Sounds
Date Posted: 29 April 2010 at 8:21pm
you'll strugle to find one of them in france, but all uk one's have inches andf cm's |