Same with substituting Jantzen 1.8mH, 0.17 ohm for 1.8mH, 0.09 ohm that is specified. Close enough?
I was recommended this as the best substitution from Janzen:
000-6355 - C-Coil 6,8mH +/-5% - DCR 0,17Ω +/-10% 500W / 8Ω wire 1,2mm=17AWG -Ø71 mm / H 25 mm
For this one, the following was recommended:
000-5804 - Iron Core Coil with Discs 1,800mH +/-3% - DCR 0,085Ω - Wire 1,80 mm =13AWG - Ø55/ H 46 mm
I can't debate the theoretical pros/cons of these substitutions, but what I can say is that my OSMCs sound glorious 🙂
Anybody have leads on Black Friday participants that might have crossover parts. I've been on hold and this might help get me moving!
https://www.hificollective.co.uk/ had 10% discount in past years, they announced it on their Facebook and X accounts. We’ll see about this year…
Good progress SkyPirate, and neat work.
You sure you want to keep these inductor coil axes in the same direction? 😀 (I understand that you have put some distance between the two).
You sure you want to keep these inductor coil axes in the same direction? 😀 (I understand that you have put some distance between the two).
Is it ok to build the speaker cabinets unfinished/unpainted/un-veneered and then after they are working, remove the drivers/tweeter and finish it?
I hope these are not too big for a 30'x30' room. The fact that the bass is not as 'deep' as other higher powered amp/speakers may work to my advantage considering I would need to have them near a wall and have the 'smaller room'.
I really like the idea of having passive crossovers outside of the cabinet as well. After shopping for some speakers for a few days, I'm now looking forward to building a pair of these for my F5m build.
NOTE: Can anyone else open this github link for OSMB? it failed to load for me. ( unable to load codeblock error )
https://github.com/mbrennwa/osmcdoc/blob/master/osmc_paper.pdf
I would also like to see if I can buy component on Black Friday like others. I'm In Canada but can also order from the U.S. Let's post the deals if any are found!
I hope these are not too big for a 30'x30' room. The fact that the bass is not as 'deep' as other higher powered amp/speakers may work to my advantage considering I would need to have them near a wall and have the 'smaller room'.
I really like the idea of having passive crossovers outside of the cabinet as well. After shopping for some speakers for a few days, I'm now looking forward to building a pair of these for my F5m build.
NOTE: Can anyone else open this github link for OSMB? it failed to load for me. ( unable to load codeblock error )
https://github.com/mbrennwa/osmcdoc/blob/master/osmc_paper.pdf
I would also like to see if I can buy component on Black Friday like others. I'm In Canada but can also order from the U.S. Let's post the deals if any are found!
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Yes. Getting them to work won’t be the issue, but if you don’t like them you won’t waste time and money on the finish.
You can do that with any diy speaker.
I would go the other way round. Build/buy a speaker you like, then optimise the amplification. The speaker accounts for most of the distortion and character of the sound, so that’s where I would start.
@maximax77 thx. The link/pdf is working now.
In my case, I was originally looking for an amp for my DIY analog synths. I wanted a simple signal path and the F5m was what I decided to build. Very simple circuit which will not color the sound other than that second harmonic. The build is almost done.
What sold me was "The OSMC was designed for accurate music playback" which implies the design is more of a 'flat' studio monitor sound. Just what I was looking for. ( hopefully Rush's synths sounds great on them too though ) I have MackieMR8 powered monitors and they 'curve' the sound into a smile a bit which is ok but not what I was looking for. Just flat if possible. Or nothing too over-exaggerated. ( natural )
I'm sure the OSMC will be 5x more than what I need so they will sound great. Just wanted something known to match well with the F5m.
In my case, I was originally looking for an amp for my DIY analog synths. I wanted a simple signal path and the F5m was what I decided to build. Very simple circuit which will not color the sound other than that second harmonic. The build is almost done.
What sold me was "The OSMC was designed for accurate music playback" which implies the design is more of a 'flat' studio monitor sound. Just what I was looking for. ( hopefully Rush's synths sounds great on them too though ) I have MackieMR8 powered monitors and they 'curve' the sound into a smile a bit which is ok but not what I was looking for. Just flat if possible. Or nothing too over-exaggerated. ( natural )
I'm sure the OSMC will be 5x more than what I need so they will sound great. Just wanted something known to match well with the F5m.
A couple of thoughts from my build process.
These speakers are big. Not discrete. However, they sound fantastic, so much so that they 'vanish'. Maybe make a mockup from cardboard to get a sense of their size in your room. I have no issue with lows/bass at about a foot from the front wall.
You will be out of pocket more that $4k by the time they are making music. It is somewhat of a commitment. I could not imagine committing this much time and money, and then not spending another couple of days finishing the speakers. However, they will surely sing without finish. They are bulky and mounting the drivers is not for the faint hearted giving their cost. Personally, I would rather be done monkeying around with them, before mounting the drivers.
Anyhow. You won't regret building these speakers. They are absolutely wonderful.
These speakers are big. Not discrete. However, they sound fantastic, so much so that they 'vanish'. Maybe make a mockup from cardboard to get a sense of their size in your room. I have no issue with lows/bass at about a foot from the front wall.
You will be out of pocket more that $4k by the time they are making music. It is somewhat of a commitment. I could not imagine committing this much time and money, and then not spending another couple of days finishing the speakers. However, they will surely sing without finish. They are bulky and mounting the drivers is not for the faint hearted giving their cost. Personally, I would rather be done monkeying around with them, before mounting the drivers.
Anyhow. You won't regret building these speakers. They are absolutely wonderful.