altoncustomtech

To the best of my knowledge..... none. But then again getting a **.682" cut on a piece of mdf is impossible with any tools most people will have at home... whether you download the standard version or the version with the fractions already figured for you the measurements have to be rounded a few thousandths of an inch one way or the other to get to a usable fraction to measure and cut by...... any differences in the measurements will be negligible by most all respects..... the only difference will be any bracing you want to add and that you can add yourself to the subwoofer displacement if you can accurately figure what you'll be putting in although I plan on figuring out a way to standardize the bracing figures and have the ability to add it in as well.....

I'm posting this up again....... THIS time heavily revised, it now has slot port calculations, and CUT SHEETS! This EXCEL based box calculator will take your enclosure size, woofer displacement, the wood thickness you plan on using and the frequency you wish to tune it to and gives you the GROSS enclosure size, dimensions (Including CUSTOM dimensions in which you input two of the OUTSIDE measurements and it gives you the last one.) PLUS gives you the cutout sizes for each panel of the enclosure you just asked for....... I'm putting it out for real world testing to be sure the math is good and the cuts are helpful......... Let me know ASAP what you think and what problems or improvements there should be...... And please remember this whole thing is in it's infancy, its ergonomic usability is a little askew at first but it doesn't take long to get used to it and once I know it's all good and working and usable for anyone I'll make an actual program out of it......... Thanks and enjoy!!! Here's the link: Box Calculator And here's the same program with fractions instead of decimals for those who hate to do that conversion, the only problem is that EXCEL will only do one type of fraction at a time so they're all in 16ths of an inch, just divide down for 8th's 4th's and halves.... Fractions Sheets

Had to change a couple of things so the links above won't work...... Click here for the one with the fractions: http://www.mediafire.com/file/y0odkgiimgo/Box Calculator - Fractions.xls And here for the standard one: http://www.mediafire.com/file/w3mymgzmhkd/Box Calculator.xls

Just bumpin' the topic....

Well, here we go, I've created this in an attempt to make a tool that can help take the guess work out of all the difficult to figure on a calculator values we constantly figure for box building. I think this is a decent tool and that it could work for alot of us. I'm putting it out here for all to try and give it some real world tests. Let me know if you guys find anything wrong with the sheet just let me know I'll do my best to fix it. So here ya go, we'll try this link out first just copy/paste: =http://www.mediafire.com/file/ugzuqj4mzjw/Box Calculator.xls=

No, all the measurements are standard, it just shows the metric conversions so that the formula will work. It's the same formula that Vance Dickason uses, only his is designed for metric that's why all the conversions happen, also, it doesn't just give the port length it calculates the enclosure sizes with the port and driver displacements as well. And now it even figures for Slot ports.... =http://www.mediafire.com/file/nwj0o0mjuji/Box Calculator.xls=

This question is directed to anyone who's willing to answer but it would be great to hear from Nick or Scott on this. I am currently powering my subwoofers with a Hifonics BXI2006D of which I'm not proud of at all. My current subwoofers consist of Hifonics Brutus BX12D2's having D2 voicecoils themselves I run them series parallel for a 2 ohm load on the amp with a supposed 1300RMS for the two which was supposed to be running them with 50wrms to spare (laughable right?). At any rate I'm ready to order my pair of 12Q's to replace the brutus subs and I"m torn between getting the D1 or D2 coils. I'm worried that powering the Q's at 1300 watts will result in less than desirable results (not as loud). I'm also worried about the same problem running this AMP at 1 ohm as well (too much distortion). I AM PLANNING on replacing the amp with two JBL GTO14001 amps running them @ 4 ohms for 1200 into each sub which should yield fantastic results. I would like to order the D2's in anticipation of this upgrade unless running amps such as the SAZ-2000D at 1 ohm has no detriment at all to SQ. I'm an SQ oriented listener who's slowly making my way to an awesome SQ setup with upgrades planned on my highs as well to ID CTX components and JBL amp for those. My worries may be unfounded but SQ is of utmost importance and I don't want to cause any more problems than I"ll already have with using the current amp for however long it takes to make the upgrade which could be a month or even a year. I thank you all in advance for your help in this matter, please no "get rid of that piece of crrap Hifonics" replys as I'm well aware of the CHEAPOSITY of the damn things, was when I upgraded to them and yes I said upgraded. (from Profile and Audiobahn)

I'm aware of this.... my question is related to the difference in the SQ of the subs when both are driven by the same amp at a low impedence such as 1 ohm such as the case is with my current amplifier, I'm not sure when I'll be able to purchase the new amps I was speaking about in the OP. The ohm load makes a difference in the damping of the amplifier and I'm wondering whether or not, with these subs, it's as critical as it would be with cheaper subs...... in a nutshell.

Hello everyone, I'm new to this Forum. I've been on CA.COM for many years and am finally branching out. I live in SouthWest Indiana, have only one vehicle with a system installed as of right now. I built and installed everything in my 1998 Chevy Venture which has a Pioneer HU and Hifonics amps, Atlas components and Brutus subwoofers installed in it with the BIG 3, 250A HO alternator, RaamMat sound deadening, Optima battery and 1/0 wiring to the amp board. I'm hoping to be upgrading soon to an Eclipse HU, Morel Tempo components, FI Q subs, and Cadence TXA Amps.