I used to own a pair of these, but I sold them and I really regretted doing that! Id like to get another pair some day, but because Im more into DIY these days, I had a quick search and found noone has tried to clone these legendary speakers. Well there was one dude who was looking into it, but the thread didnt go far. I know the drivers are only available through jamo, but has anyone made a close to original D830?
Got pictures? I'm not familiar with this one (Jamo never made it in quantity to north america).
dave
dave
Amazing speakers, they use Seas W18-style woofers with a custom phase plug, double-wall cabinet (or baffle?) and a custom tweeter from Seas (Sonotex). Very smooth sound, a little too smooth for me personally, but very good value. I guess one could clone them at half the price.
@dave: http://www.jamo.com/na-en/products/d-830-description/ and http://images.google.co.in/images?h...ficial&um=1&q=jamo+d830&sa=N&start=21&ndsp=21
@dave: http://www.jamo.com/na-en/products/d-830-description/ and http://images.google.co.in/images?h...ficial&um=1&q=jamo+d830&sa=N&start=21&ndsp=21
I know. Amazing speakers for sure. They are smooth, but thats how I like speakers. Not to sharp on the highs and balanced in mid. I know there was a thread on here about the crossovers for them, but I cant find it again! Would be awesome to make your own pair!
Troels TJL2W
If you want a monitor, Keep the width of the baffle, the place of the speakers and make a cabinet 18L@35Hz.
If you want a monitor, Keep the width of the baffle, the place of the speakers and make a cabinet 18L@35Hz.
That may have been me. I have a pair, but was not satisfied at all with the crossover. The one where I left off sounded good to me, but it wasn't one that I wanted to build, I used SoundEasy in digital filter mode. I've recently considered finishing it, though that may mean further changes in the crossover.
It does not use a W18 variant, it's the older W17 and is a 4-ohm version IIRC. I doubt it's available at all anymore. Were I looking to build a new system, cloning this one would not be a consideration. The W18 or any of a number of other drivers would be the recommendation. One version of the tweeter is still available from Madisound and is an excellent one.
Dave
Yea the W17 isnt available anymore. I asked SEAS if they had any in stock and no go...pity. Theres always going to be a better speaker to build/design. For me personally I dont have much measuring equipment so its more trial and error for me. But the D830s were the only speaker I really really enjoyed listening too. But theres so many out there now...time to see which one to clone!!!😉
right, ive got my hands on another pair of d830s. I have managed to find a xover shematic for the d830(thanks to diyaudio.com). What i intend to do is build a cabinet using 19mm mdf all round, and use a 30mm front baffle with the rounded edges as per the dimensions of the d830. If im brave enough, I will remove the front baffle also, if possible. Seeing it has screws I would assume that this will be possible. Hopefully this will allow me more of a close up view of the internal dimensions of the speaker. I will post pics of the original d830....and in a few weeks, hopefully show my efforts.
I think you should look at Troels design again. He's a very talented designer and I'm sure his version sound at least as good as the Jamos. 🙂
I got mine back out recently and have been listening to them for a couple of days through SoundEasy's digital filter. My crossover still may need some work, it's not harsh, but there isn't much in the way of bass at all. Not liking ports, I partially stuffed the cabinet, maybe too much. But for the price, they should have been better out of the box.
The box/baffle are outstanding, though.
Dave
"Not liking ports". Did you run your box design through a model? Stuffing correctly will increase bass by as much as 10%. Not decrease it. I am not on my main computer, so I don't know the suitability of that driver for sealed.
There is a reason not to clone old speakers, no matter how good they were at the time. Drivers get better. If Seas has replaced a model, it is because the new one is better in some way. (market, cost, quality, etc) Seas is always working to move their breakup up modes higher.
There is a reason not to clone old speakers, no matter how good they were at the time. Drivers get better. If Seas has replaced a model, it is because the new one is better in some way. (market, cost, quality, etc) Seas is always working to move their breakup up modes higher.
The drivers are great drivers, but the early Seas metal cones had a lower breakup that really requires a lower crossover than was used. The tweeter is superb, even today IMO.
I've worked up the schematic for the original crossover. I designed my own and ran it through the digital filter in SoundEasy rather than physically construct one. It probably could stand a bit more improvement, I was never very happy with it. These are not my primary speakers, anyway. They werea close-out at a good price, so I thought I'd use the box if I didn't like the system. I'd still like to use the box and tweeter with a newer midwoofer, but the problem is that most newer midwoofers are 170mm, not 165. Given the material they used for the front baffle, it's not a simple job to use another size driver.
Dave
I didn't try to model it, I simply added some stuffing and checked by ear. A 165mm midwoofer such as this one is not going to have a lot of bass in any case. I just don't like the sound of ported systems, but I may have over-stuffed it as well or it's too close to the port itself. I didn't spend a lot of time on it.
Cloning older systems isn't always bad, but this driver is very old now. The newer Seas W18 is a big improvement and as noted earlier, you could never buy this version of the W17 anyway.
Dave
What I now intend to do is create a cabinet based around the d830 look. Im going to build the odin mk3 for our showroom and have the cabinets look like the d830, just in an mtm style. The Baffle will be 30mm mdf, unlike the d830 with the 'non coloration compound' baffle. I intend to brace the cabinet heavily to try and reduce vibrations as much as possible.