Compact 15 reflex plans for RCF L15P540
Printed From: Speakerplans.com
Category: Plans
Forum Name: Plan Requests
Forum Description: All plan requests here
URL: https://forum.speakerplans.com/forum_posts.asp?TID=93792
Printed Date: 27 March 2026 at 4:06am
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: Compact 15 reflex plans for RCF L15P540
Posted By: deeboy718
Subject: Compact 15 reflex plans for RCF L15P540
Date Posted: 05 November 2015 at 5:57pm
| Hey, all. Long-time lurker, first time posting. I have a RCF L15P540, and I'm looking to build a compact reflex enclosure for it. I downloaded the plans for the sub15 by RCF, and I guess you can call me an idiot when it comes to converting mm to inches, because since I've always just used inches for measurements, I can't seem to get the measurements right. Yes, I know, just google it, but I was wondering if anyone here has built this cab, and can point me in the right direction as far as the measurements in inches. I've seen many people here use the B&C sub15 plans, and have heard good things about it, but I'm looking for something a bit smaller than that. Any help would be greatly appreciated. |
Replies:
Posted By: sn95
Date Posted: 06 November 2015 at 12:02am
| Can you give to size . |
Posted By: t.geessounds
Date Posted: 06 November 2015 at 12:51am
| do what i did buy a mm tape |
Posted By: app
Date Posted: 06 November 2015 at 12:57am
I wonder what they teach you at school there You have the answer in your post but now for the hard part,find it yourself and google it...Think real hard,3 words... ------------- "what!?" |
Posted By: b grade
Date Posted: 06 November 2015 at 12:59am
|
Dude just get metric measurement tools. The conversion to inches is easy, but the impractical nature of using the fractions of an inch is annoying. I am here in the states too. Our country is dumb for not going metric. Don't be dumb. ;) There is 25.4 mm in and inch if you really want to go that way. Here is a conversion program even https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=conversion%20mm%20to%20inch" rel="nofollow - https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=conversion%20mm%20to%20inch but now you have decimal inches and need to convert to fractions and its annoying. Don't do it. As for a smaller box, you can try to find some other design. If you shrink this one, you will change its performance. If you want to modify a design, you are on the edge of the rabbit hole. Teach yourself how to use one of the box design programs to get an educated guess on how your changes will likely turn out.
|
Posted By: app
Date Posted: 06 November 2015 at 1:00am
Thats a good tip,buy something. That will solve the problem  Sorry guys,Im just amazed...  ------------- "what!?" |
t.geessounds wrote:Posted By: b grade
Date Posted: 06 November 2015 at 1:04am
What is amazing is that we use inches at all |
Posted By: app
Date Posted: 06 November 2015 at 1:12am
|
Nothing wrong with inches. Its about understanding the scale. I think ,1 inch is close enough for any measurement. ------------- "what!?" |
Posted By: b grade
Date Posted: 06 November 2015 at 1:12am
| Imagine using a measuring device that is subdivided from 1 inch, 1/2 inch,1/4 inch,1/8 inch, 1/16th inch,1/32 inch. Now say you need to cut a baffle and have the diameter of the hole to cut and it comes out something close to 11 23/32 inches and you need the radius so it has to be divided in half. Now go to the calculator and you have to divide 23 by 32 plus 11 and then divide that result by 2 to get the radius. But it is now in decimal points so you have to resolve it back to fractions. It sucks. Or you could have something like 220 mm divided by 2 and you are have your answer right there. |
Posted By: b grade
Date Posted: 06 November 2015 at 1:22am
Unfortunately there is no 0.1 inch mark on our tools. 0.1 inch would have to be converted to approximately 3/32 inches to use a standard ruler. Again, its annoying. But here is another calculator if you want to have a short cut. http://syzygy.virtualave.net/decimal_inch_to_fractions.html" rel="nofollow - http://syzygy.virtualave.net/decimal_inch_to_fractions.html Or the less accurate approximation but more likely to be on a ruler 2/16th inches.
|
Posted By: app
Date Posted: 06 November 2015 at 1:26am
Maybe buying a roll measure with both inches and cm is not a bad idea after all  ------------- "what!?" |
Posted By: b grade
Date Posted: 06 November 2015 at 1:29am
| When people talk about how stupid americans are, this should be the first example. Think of the billions of dollars in wasted time every day. |
Posted By: app
Date Posted: 06 November 2015 at 1:39am
|
Were all gifted somehow. But its true that Americans dont have the best of education system. We had tests in school when I was little where we had to memorize the multiplication table. When you learned that and thru that splitting its easy to do all kinds of calculations. edit. We had those take 1/2 of this math at first grade or preschool Youre still sticking to it ------------- "what!?" |
Posted By: app
Date Posted: 06 November 2015 at 1:50am
|
To be honest I think I wouldnt survive 5th grade math at the moment I too had problem calculating box volume, if a skill is not used regularly it will fade away and needs some relearnin to remember things again. Its all good. But I hope the guy will get his box done,good luck!  ------------- "what!?" |
Posted By: b grade
Date Posted: 06 November 2015 at 2:00am
|
I learned all of this and I can do it by hand, but after the first speakers I built when I did all the conversions, I just switched officially to the metric system even for my own designs. Sorry for the thread jack OP. I will shut up now.
|
Posted By: deeboy718
Date Posted: 06 November 2015 at 1:34pm
| Wow, way to welcome someone to a forum. Yes, I googled and tried the mm to inches converter, and just because I haven't switched over to metric system, that makes me stupid? I was only asking if anyone has ever converted the measurements into inches because yes, we stupid under-educated americans still use inches. I wasn't trying to change the design in any way, as I know it will effect the performance. But thanks for the lovely greeting, silly me for thinking that this was a site where people build things for the love of it, and openly share and try to help others who may not be as experienced as themselves. If I offended anyone with my lack of knowledge, I apologize. |
Posted By: cravings
Date Posted: 06 November 2015 at 1:49pm
|
it kinda quickly turned into a discussion among other people so i wouldn't take it personally.. this converter will do mm to inches and fractions http://tuxgraphics.org/~guido/javascript/cm-inch-conversion.html" rel="nofollow - link definitely worth getting a set of rulers / tapes with both on them though. |
Posted By: b grade
Date Posted: 06 November 2015 at 2:05pm
| No no no. I was stupid and our country has made a mistake in sticking with our way of measuring things. I am trying to save you from those mistakes. I am sorry you read it that way. Seriously it is just more work to use inches. |
Posted By: b grade
Date Posted: 06 November 2015 at 2:09pm
|
The converters I provided will get it done. The one Cravings provided is even better and more simple. If somebody already did the work for you on their own, that may save you additional time, but this site has few of us who would even have use of that plan in inches. It seems unlikely. I apologize again. I did not mean to be a jerk. Welcome to the forum. There is useful info. People do talk trash to each other a bit too, but I try not to.
|
Posted By: app
Date Posted: 06 November 2015 at 2:30pm
If youre gonna hang out here often better get used to "evil" people Welcome to the forum dude. Dont be a martyr,its useless here  Well now you should know how to convert the measurements to inches and make your box. Ride on! ------------- "what!?" |
Posted By: APW
Date Posted: 06 November 2015 at 2:32pm
|
Deeboy You’re probably having trouble converting as a lot of European metric drawings are drawn in centimeters and not millimeters, 1cm = 10mm, 1mtr = 100cm = 1000mm…. 1inch is 2.54cm or 25.4mm. And as t.geessounds suggested the easiest way is to buy a metric tape, the metric system is very simple to learn (far easier that imperial) as all the fractions are simple divisions of 10. Most metric tapes are also in centimeters with the small sub-divisions being millimeters. http://www.thetapestore.co.uk/knowledgebase/How/Tape_Measure_Markings_%E2%80%93_What_Do_They_Mean_.html" rel="nofollow - http://www.thetapestore.co.uk/knowledgebase/How/Tape_Measure_Markings_%E2%80%93_What_Do_They_Mean_.html In the link above look at the image in the 'Imperial and metric markings' section and you should see what I mean. I hope this helps. |