Post by paintedklown on Jul 22, 2011 17:35:58 GMT -5
Hey DIY speaker builders.
I am sure if you are skilled enough, and know what to buy and where to get it, then you could build speakers that perform beyond what the price point would suggest (like Emotiva gear).
I have a couple of stupid questions.
Back in the day we used to build DIY subwoofer boxes for our cars. We commonly used .75" high density particle board for them. It was cheap, seemed quite sturdy to me, and as long as it didn't get wet it would last a lifetime.
I was always partial to over sized sealed boxes stuffed with 1lb of polyester fiberfill per cubic foot of airspace in the enclosure.
Would using .75" high density particle board work for tower speakers? Would you want to isolate the subwoofer driver inside the main cabinet?
How about pre-built cabinets, and I just load in the drivers I want?
Also, where would I look to see what drivers, crossovers, terminals, etc. are available?
Is there a good website to look for these types of things? I am not sure I want to go the DIY route, but when I stop to think about what speakers I like, it is a mix of different ones for different reasons.
I want to have the tweeters from Focal 800 series towers, and the midrange drivers from B&W CM series towers...not sure about LFE drivers.
This is nothing serious. I am just interested in looking at what is available, what price points are available, and weather or not it would ultimately be something I want to attempt.
Use MDF, not particle board. It is much stronger and less resonant. Two of the best sources for parts are www.partsexpress.com and www.madisound.com Each of those sites also offers some technical resources and forums to help you get started. I highly recommend you purchase The Loudspeaker Design Cookbook by Vance Dickason which is probably the best "how to" book for beginners and pros alike.
Is it possible to biuild a systemn that will outperform some costing many times more? Yes, but it is NOT easy.
"I don't know, ask Prince." - Eric Clapton after being asked what it was like being the best guitarist in the world
medium density fiberboard is usually used although some use Baltic Birch plywood. Frankly though, your questions ask for so much, as much as a whole book would provide. I do build speakers but it is very complex. Crossovers in particular require a great deal of knowledge from my perspective.
You should also checkout HTguide (http://www.htguide.com/forum/forumdisplay.php4?f=6) there are plenty of speaker projects and lots of information if you want to get into DIY speakers. I've built the R44 speaker project and they give my maggie MG12's a good run for there money.
2X XPA-1 main speakers
Primare Pre 30
project tubebox SE II
DIY Curved Statements
DIY Dual 15" subs
Post by gerbilaudio on Jul 25, 2011 0:54:39 GMT -5
I will list a few companies that you might want to get your parts from, SIMPLY SPEAKERS, MADISOUND, PARTSEXPRESS, and also you can use CAR SUBWOOFERS as an alternative to home drivers. I learned this from an audioholics member, The car gear today is equal to home gear, not like in the days you used to build them. I have seen the evolution of car stereo the last 30 yrs and many home audio companies manfufacture car stereos in the same level as high end home audio. In fact, interconnects, wires etc. i would have no problem using for home systems. This is what I did in modifying my ESS HEIL 1D's to another level. I used a car subwoofer in place of the original ess and move that to the rear, completely removign the passive radiator, turning it into a DIPOLAR design which sounds more of a MAGNEPAN but with heavier and tigher bass notes. It creates the same soundstage as a bose 901 without the MUDDINESS and fake midbass sound, so in essence it's really a magnepan/bose sound, using a PIONEER TS 303 subwoofer that is very inexpensive no more than $120 at walmart. SIMPLY SPEAKERS AND PARTSEXPRESS have very affordable speaker parts. MADISOUND has high grade drivers that you might want to look for. In regards to cabinets, heavy and TIGHT well INSULATED closures is what you're looking for the achieve maximum compression from your drivers without excess VIBRATION. Like in components, you need to control as much VIBRATION as you can to prevent instabilities. If you look at the higher end loudspeaker designs including well made DIY loudspeakers that equals them, they weigh hundreds of pounds which prevents vibration and feedback!
Parts Express has better enclosures than Madisound while Madisound carries better and more expensive drivers. Meniscus is practically a clone of Madisound but they also will cut baffles for a per cut fee and do a dynamite job of it. For a good sub I would get the Parts Express 3cf and a good twelve inch with lots of excursion, 20mm or more. They market the 3cf enclosures as being for 15" sub drivers but that size enclosure is better suited to a 12" at least if it's vented. Of course you could put a 15" into a 3cf sealed enclosure but it wouldn't go as low or loud without lots of equalization and amplification. For ideal enclosure size you can enter the technical data of the driver into an online calculator or WinISD/WinISDPRO (free). I've built both a 12" with a 15" passive radiator in a PE 3 cf cabinet and a 15" with a 18" passive radiator in a custom built 4cf enclosure. Both perform wonderfully and use the now defunct Exodus drivers with an XBR2 motor and 28mm of excursion. The 15" does go lower and louder than the 12". If I believed in such labels I would say they are both musical and powerful with the 15" handling very low bass better.
Hi, I have a pair of McIntosh ML1C's. My grills fall off, they are heavy, because the catches are broken. Where can I get replacements. Mac says they no longer have them. I don't want to drill the cabinets. Screw type is what I am looking for. Either magnetic or captive catches available. I have looked and didn't like the choices. Any suggestions? Thanx
UPA-7, UMC-200 Pre/Pro, OPPO 103, Nak DR3 Cassette deck, B&W 602-S3, LCR600-S3 cc driven by H/K 335, HT system Klipsch KLF-20 front, KLF-c7 cc, 601-S3 rears, ASW600-S3 KSW-15 subs, Technics SA-404 driving Mc ML1C speakers,Luxman K-8, SF Concertino Domus on Z2 of UPA-7, driving older ADC