not yet but I will. 🙂
scitizen17, really, flat response +/- 2db to 20hz from a 10"? And FR dead flat in to 18k?
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That really would be nice if it was true. I should have payed closer attention. There is definitely something wrong with my HOLMImpulse configuration. I'll figure it out and post the correct results.
I finally got the top for the subwoofer finished! I cut the birch ply so that I had a nice veneer book match, then I cut it in half the other way and put it back together to get the 4 way match. There are flaws in other parts of the project, but overall I think it's pretty good. I use 3 coats Hope's Tung Oil Varnish, rubbed in with #0000 steel wool after sanding with 400 grit. Very soon after the oil is rubbed in, I wipe off the excess with a clean paper towel. The last step is to wax it with a good carnuba wax (I have some boat wax lying around).
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Old out and new coming ?!
Tnx all for many interesting articles. About to build something new instead of these 6 years old 3 way construction. 35 liters of great sound, increadible stable bass all the way down to the basement, lovely mid and treble but....... Could be a little bit more open on the top, and could handle loud volumes a little bit better. Need another design than this heavy oak finish. Thiel&Partners C220, C90, C25 + 8 kg of crossover materials. Any suggestions forsomething of the same sound and size - preferably cheaper?
Tnx all for many interesting articles. About to build something new instead of these 6 years old 3 way construction. 35 liters of great sound, increadible stable bass all the way down to the basement, lovely mid and treble but....... Could be a little bit more open on the top, and could handle loud volumes a little bit better. Need another design than this heavy oak finish. Thiel&Partners C220, C90, C25 + 8 kg of crossover materials. Any suggestions forsomething of the same sound and size - preferably cheaper?
Hello everyoane. In the link below you will see my latest work. In is a center chanel using Vifa speakers. Be aware, it is a translation using google translate 🙂.
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Google Translate
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Superb I like your construction methods. If you want to get a better idea of the bass room response you could take many measurments in posible listening positions and avrage them. I do this for bass EQ and it works well.
Great stuff, a very serious build.
Felicitari, n-are cum sa nu te bucure cand vezi asa ceva! Numai bine!
Here are my Wilmslow ATC 100 clones with ATC discreet active xover/amps.
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Both are sealed. They don't play loud, but that's ok these are for close up listening in a small room.
My First DIY
Hey guys.
After browsing these forums and others for quite some time, my DIY itch finally had to be scratched. I've been in the audiophile game for a bit and had everything from standmount monitors to very pricey floor-standers, but nothing I've made with my own hands.
The design I chose was the MJK Open Baffles, with the Eminence Alpha-15A and the Fostex Fe-103en.
I live in a one-bedroom apartment on the 16th floor of my building, and all of the work was done in my living room/dining area (much to the displeasure of my girlfriend). The baffles are 3/4inch birch finish plywood, with birch edge banding. The "feet" are red oak. The loudspeakers were finished with a little stain and satin poly for protection. The little "accent" pieces near the base were actually the result of an accidental drill-through of the baffle when mounting the shelf-brackets on the back. They actually turned out to look "original".
The crossovers are housed in a hammond enclosure mounted on the back of the baffle; they are damped with non-conductive foam to minimize vibration. I've used 10-guage wired for all of the internals and driver hook-ups.
The initial sound was actually very bad. The FE-103 can be a challenge, and the bass was a bit shy. I applied some EQ to the setup and now I'm very pleased! The drivers took a little while to settle in and play nice, but the overall tonality is now very smooth and colorless.
I learned a lot of lessons, made a lot of mistakes, but I'm very eager to jump into another project! Thanks for looking!
-Evan
Hey guys.
After browsing these forums and others for quite some time, my DIY itch finally had to be scratched. I've been in the audiophile game for a bit and had everything from standmount monitors to very pricey floor-standers, but nothing I've made with my own hands.
The design I chose was the MJK Open Baffles, with the Eminence Alpha-15A and the Fostex Fe-103en.
I live in a one-bedroom apartment on the 16th floor of my building, and all of the work was done in my living room/dining area (much to the displeasure of my girlfriend). The baffles are 3/4inch birch finish plywood, with birch edge banding. The "feet" are red oak. The loudspeakers were finished with a little stain and satin poly for protection. The little "accent" pieces near the base were actually the result of an accidental drill-through of the baffle when mounting the shelf-brackets on the back. They actually turned out to look "original".
The crossovers are housed in a hammond enclosure mounted on the back of the baffle; they are damped with non-conductive foam to minimize vibration. I've used 10-guage wired for all of the internals and driver hook-ups.
The initial sound was actually very bad. The FE-103 can be a challenge, and the bass was a bit shy. I applied some EQ to the setup and now I'm very pleased! The drivers took a little while to settle in and play nice, but the overall tonality is now very smooth and colorless.
I learned a lot of lessons, made a lot of mistakes, but I'm very eager to jump into another project! Thanks for looking!
-Evan
Nice work, simple and clean. Just the way I like it 🙂
Fostex drivers tends to have a long burn-in time, much longer than a normal "hifi" speaker. So maybe the driver just hasn't been played enough yet to really sound great 😉
Fostex drivers tends to have a long burn-in time, much longer than a normal "hifi" speaker. So maybe the driver just hasn't been played enough yet to really sound great 😉
A small(er) 2 way speaker.
Not yet final coated (still out on what finish to use) and cabling to integrate in the stands and replace speaker screws with black ones.
Tapered box with curved side walls. Bassreflex tuned at approx 40hz, vent on on the bottom. Tuning is low with a result that the response is dropping a few dB towards f3 with some room gain in mind to compensate that.
Seas 18cm Excel midwoofer and Visaton ceramic tweeter. Xover at around 2.2Khz.
Currently an active setup with Hypex AS2.100 DSP plate amp. But some time in the future a passive crossover will be created.
I choose a big diameter port to avoid any vent noise. Big diameter resulted in a long port which led to a small resonance at 1,2 Khz. I damped that within the DSP. Maybe I replace the port with a smaller diameter/shorter one so the resonance raises up above the cross-over freq. I don't play that load that vent noise will be an issue.
More then pleased with the result, it digests all kinds of music equally well wether it is jazz, big band, classic, vocals, etc etc.
Not yet final coated (still out on what finish to use) and cabling to integrate in the stands and replace speaker screws with black ones.
Tapered box with curved side walls. Bassreflex tuned at approx 40hz, vent on on the bottom. Tuning is low with a result that the response is dropping a few dB towards f3 with some room gain in mind to compensate that.
Seas 18cm Excel midwoofer and Visaton ceramic tweeter. Xover at around 2.2Khz.
Currently an active setup with Hypex AS2.100 DSP plate amp. But some time in the future a passive crossover will be created.
I choose a big diameter port to avoid any vent noise. Big diameter resulted in a long port which led to a small resonance at 1,2 Khz. I damped that within the DSP. Maybe I replace the port with a smaller diameter/shorter one so the resonance raises up above the cross-over freq. I don't play that load that vent noise will be an issue.
More then pleased with the result, it digests all kinds of music equally well wether it is jazz, big band, classic, vocals, etc etc.
