Wolter Posted February 25, 2006 Share Posted February 25, 2006 hello everyone, I've been reading this forum for a very long time and I enjoy everytime i read here, great information. I'll get to the point now. Ok here it goes, I have built speakers in the past I had alot of fun doing it but it was very simple because I got the drawings and everything I needed to built them. But now i want to draw my own speakers with the drivers i choose myself in a vented box. I was thinking of a floorstanding 3-way design with multyple woofers, 2 or 3 woofers thats where I get stuck. The tweeter I am going to use is a titanium dome tweeter 1", and the midrange I am going to use is a titanium dome midrange 2". the woofers I am going to use are 8". All speakers are 8 ohm. The problem is I have no idea how I should hook em up to the crossover. I've been busy reading about parallel and serie but I dont really understand how that works. And the reason i dont use a bigger woofer is a very long story but to make it short, they need more litres and the money, something that doesn't grow on my back[]. If you need any information about the speakers just ask me and I can provide you with any techincal data. thanks in advance. Wolter. Quote Link to comment Share on other sites More sharing options...
Bennyboy Posted February 25, 2006 Share Posted February 25, 2006 Dear Wolter, First ,welcome to the forum ! I have one question . Have you ever listened to Hornloaded speakers and Klipsch in particular ??? Bennyboy Quote Link to comment Share on other sites More sharing options...
ironwoods Posted February 25, 2006 Share Posted February 25, 2006 Hi, maybe you're just not ready for such an undertaking? A designer will have a good understanding of all principals involved, but having built a couple of kits, puts you in front of the majority here. What has given you the idea, that we know anything about designing speakers from scratch, here? [:^)] I'm not saying that no one here is into DIY, but for the most part, we have relied on the late Paul W. Klipsch & his associates, to get good sound with our systems. There are a few X-O moders and people who do vintage restoration, but most use the original OEM drivers and cabinets, and only change subtle characteristics to FR by changing or updating a few components. It never hurts to ask, but there are better places to seek the answers to your questions. The "cookbooks" are a good start and reference point. These sites all have forums specific to the DIYer. http://www.madisound.com - it's best to know your stuff before posting here. http://www.diyaudio.com http://www.partsexpress.com Good Luck Quote Link to comment Share on other sites More sharing options...
Jay481985 Posted February 25, 2006 Share Posted February 25, 2006 Hi, maybe you're just not ready for such an undertaking? A designer will have a good understanding of all principals involved, but having built a couple of kits, puts you in front of the majority here. Bose obviously never had a good understanding, but their accountants sure do with the money! But on a real note, goto the websites as describe, you may want to buy some books from parts express. I am sure DrWho will chime in. Also there is a number of websites that I have bookmarked on my other computer about speaker design, I go back sunday (I am home away this weekend from college) Also do you realy know why you want to go ported? Umm alot of information can also be used fro www.diysubwoofers.org where they give helpful incite to sealed, ported, pr even though the information is for subwoofers it can be incorporated. Also crossovers are something that I fail to understand also Quote Link to comment Share on other sites More sharing options...
DrWho Posted February 25, 2006 Share Posted February 25, 2006 Here you go: http://www.colomar.com/Shavano/construction.html Scroll down a bit and you'll see a section dedicated to crossovers...you pretty much just need to plug and chug into the tables. Re: the woofers....what is the sensitivity of your tweeter and midrange? For the sake of an example, let's just say they are 92dB. If your woofers have an 86dB sensitivity then you want to wire two in parallel, yielding a 6dB gain which will match up with 92. Be careful as wiring in parallel cuts the impedance in half - so if you have 8 ohm drivers, the amp will see 4 ohms. If you have 4 ohm drivers, then the amp will see 2 ohms (and this is usually too low for most amps). If your woofer is closer to 92, then just go with one. Don't go with 3 because wired in parallel presents too low of an impedance and wiring in series presents too large of an impedance. You could go with 4 drivers....but by that time you would be better off reverting to 2 better drivers. Quote Link to comment Share on other sites More sharing options...
jrt Posted February 25, 2006 Share Posted February 25, 2006 I'm a 'learn by doing' person, so I say go for it! Worst case is you waste some wood on an encosure and some solder. In addition to the excellent websites posted, I would suggest www.audioasylum.com and particularly www.audioroundtable.com The "pi speakers" guy has some software on his website that will allow you to model enclosures, and Wayne has been real helpful to lots of builders. good luck! Quote Link to comment Share on other sites More sharing options...
Wolter Posted February 26, 2006 Author Share Posted February 26, 2006 Thanks all for the great replies, and the links to other websites. First I live in the Netherlands so if I want to buy, let's say klipsch RF-7, I pay 2000 EACH!! so that's never going to happen, they have cut the prices almost in half now, so i am getting closer. But like I said before money isn't growing on my back. But I do have the klipsch promedia 2.1 and I blame them for getting me into DIY contest[]. The tweeter and the midrange driver have an spl of 92 dB and the woofer is rated at 88 dB spl. So i'm going with 2 woofers now and together wired in parallel they are 4 ohms, and the tweeter and the midrange are 8 ohms not availeble in 4 ohms. So that leads me to my next question: My filter needs to be ?? ohms, so I hook up the speakers to the same amount of ohms of the filter to the amplifier?. This was my last question than I need to save some more money and than i am going to built my new speakers. I really apriciate the links and replies you guys gave me, i'm sure they will be helpfull. It will just be a matter of time before I buy the big klipsch speakers.(Man do i hate waiting[]) Wolter. Quote Link to comment Share on other sites More sharing options...
rcarlton Posted February 26, 2006 Share Posted February 26, 2006 In the United States money does not grow on trees. Certainly not on backs. Unless it is green backs...nope, that don't work. Quote Link to comment Share on other sites More sharing options...
Bennyboy Posted February 26, 2006 Share Posted February 26, 2006 First I live in the Netherlands so if I want to buy, let's say klipsch RF-7, I pay 2000 EACH!! so that's never going to happen, they have cut the prices almost in half now, so i am getting closer. But like I said before money isn't growing on my back. But I do have the klipsch promedia 2.1 and I blame them for getting me into DIY contest. Wolter , Maybe you get me wrong ? I only ASKED if you ever heard hornloaded speakers ?[] It isn't important if you have the money ! Bennyboy Quote Link to comment Share on other sites More sharing options...
Bennyboy Posted February 26, 2006 Share Posted February 26, 2006 First I live in the Netherlands so if I want to buy, let's say klipsch RF-7, I pay 2000 EACH!! so that's never going to happen, they have cut the prices almost in half now, so i am getting closer. But like I said before money isn't growing on my back. But I do have the klipsch promedia 2.1 and I blame them for getting me into DIY contest. Wolter , Maybe you get me wrong ? I only ASKED if you ever heard hornloaded speakers ?[] It isn't important if you have the money ! Bennyboy Quote Link to comment Share on other sites More sharing options...
jrt Posted February 26, 2006 Share Posted February 26, 2006 Oh, hey- here's another idea. You could get an external electronic crossover and use that with bi- or tri-amping- don't even install crossovers in your speakers. Something like a Behringer DCX2496 (or equivalent) is pretty inexpensive and might be a lot of fun for you to play with. It's easy to program in a variety of crossover points, padding, limiters, time delays, etc. Quote Link to comment Share on other sites More sharing options...
Wolter Posted February 27, 2006 Author Share Posted February 27, 2006 Hello again. Sorry I didn't explain it good Benny my bad. I never actually heard horn loaded speakers, and I can't count the klipsch 2.1 I think. But I'm planning on getting to a store where they have klipsch and then i wan't to take a listen, because i read so many things about the klipsch horns so they must be very good. And when i know how they sound I can make a comparison between mine the klipsch's[]. But why that question? Wolter. Quote Link to comment Share on other sites More sharing options...
Bennyboy Posted February 27, 2006 Share Posted February 27, 2006 Wolter, "But why that question ? " I don't think you want to build something with a dome tweeter when you are used to horns............i think I see you are coming from the Netherlands......................like me.[] You can visit me for a listening ? Ben BTW nothing wrong with the Klipsch 2.1 ! ! Quote Link to comment Share on other sites More sharing options...
Erland Posted February 28, 2006 Share Posted February 28, 2006 Hi Wolter, I suggest that you have a talk with Al Klapenberger http://www.alkeng.com or Bob Crites (frequents this forum) regarding crossovers for hornspeakers. They probably know more than the rest of us all together. Good luck Quote Link to comment Share on other sites More sharing options...
Marvel Posted February 28, 2006 Share Posted February 28, 2006 Have a look at Bert Doppenbergs site. He is in the Netherlands, and usd to sell a LaScala styled bass bin to go with his Oris horns. He is very nice, very helpful. Perhaps you could pay him a visit, or at the very least, sind him an email. http://www.bd-design.nl/ Bruce Quote Link to comment Share on other sites More sharing options...
IB Slammin Posted March 2, 2006 Share Posted March 2, 2006 Have a look at Bert Doppenbergs site. He is in the Netherlands, and usd to sell a LaScala styled bass bin to go with his Oris horns. He is very nice, very helpful. Perhaps you could pay him a visit, or at the very least, sind him an email. http://www.bd-design.nl/ Bruce There you go. Nice job Brucester. Good advice. Terry Quote Link to comment Share on other sites More sharing options...
jwc Posted March 3, 2006 Share Posted March 3, 2006 Back up a second Yes you can do this. I really don't care if you know nothing....it can be done. seriously! I've got a bunch up "plans" laying around I can help you with. Need to know a 3 important things: What is your size limit on a cabinet? What shape? Like an RF-7? What size room will they be in? If you are contemplating RF-7's, then I guess it isn't a small room. Last and most inmportant...how much do you want to spend? Please quote in american dollars. We southern USA hicks don't know much about foreign currency. jc Terry, are you done with that network? Quote Link to comment Share on other sites More sharing options...
Wolter Posted March 4, 2006 Author Share Posted March 4, 2006 Hi all, first of all thx for all the great information and websites, they are very helpfull. The size limit is around 100 litres and that's about 3,53 cubic feet if the calculater is right. The shape is like an RF-7, the size of the room is 16 feet wide and the depth is 23 feet and the hight is 13 feet. My budget is around 500 USD on the speakers and crossovers, but my friend can probably make the crossovers so that will save me some money. I already choose the speakers I want and already made the drawlings of the size and shape of the cabinet, and I used Winisd for calculating the port size and other things. I also calculated with a closed enclosure but the vented was much better. Dont forget it's going to be more like an RF-5 because I use two 8" woofers in each cabinet and the difference is that it's going to be a 3-way design. Also I already got one pair of the woofers from e-bay and I have to say, they rock and it saved me 30 USD so I think it was worth it. I hope this is the information you were asking, otherwize ask me more[] Wolter Quote Link to comment Share on other sites More sharing options...
jwc Posted March 4, 2006 Share Posted March 4, 2006 Very good. What are the woofers....give me a website or something with the specs-T/S parameters. Now for $500, getting close to the RF-7 in quality will be tough, but you could have a great speaker for that expense considering you have XO help and you have two of the woofers already. Are you willing to get the tweeters or midranges off ebay as well? Or do you already have them? best bet is the next one...the following will go for more money: http://cgi.ebay.com/Klipsch-K-53-Midrange-Heresy-Pair_W0QQitemZ5872785449QQcategoryZ61378QQrdZ1QQcmdZViewItem http://cgi.ebay.com/Klipsch-K-53-K-701-Mid-Range-Horns-from-Heresy-Pair_W0QQitemZ5873708253QQcategoryZ3276QQrdZ1QQcmdZViewItem http://cgi.ebay.com/Pair-Klipsch-Heresy-K-55-V-K-700-Metal-horn-Midranges_W0QQitemZ5874417013QQcategoryZ73372QQrdZ1QQcmdZViewItem jc Quote Link to comment Share on other sites More sharing options...
Wolter Posted March 4, 2006 Author Share Posted March 4, 2006 Hi, and thanks for the reply. I don't have the midrange or tweeter yet, and there is one other problem I live in the Netherlands and shipping is very expensive and they won't ship outside the US. here's the information on the woofer http://www.visaton.com/english/artikel/art_446_1_9.html Sorry I don't know how to post a link. Wolter Quote Link to comment Share on other sites More sharing options...
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