knock off ohm walsh 2000s
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- Опубликовано: 13 май 2019
- "OHM WALSH 2000" Knock offs. I am working up a new design now for the next speaker build. These left a little to be desired in the mid and low range; I blame my box design. I will try a new build with a directional speaker setup next. compare them side by side and create a final pair with full finish.
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Nice job at building your very own mini towers and building skills, nice craftsman studio too thank you for sharing, one day you will build incredibly sound speakers.
Testing a HiFi speaker with a RUclips song is like driving self built Ferrari with an old Toyota engine 🤣
toyota makes goood engines
I have Ohm Walsh 2000s and, while I'm pretty sure the main drivers are very custom-designed, I am curious how close you can get to good sound with general purpose woofers. I respect your building skills and gumption to do the experiments! In case you are not familiar with it, I wanted to mention the Mini-DSP. This inexpensive product, plus a calibrated microphone and free software, would let you measure your frequency response and alter the input signal to compensate for flaws in the frequency response. It would also let you fine-tune the crossover for the tweeter, if needed. Just a thought...
After this initial video, I flipped the woofer over and removed everything from inside of the box. It became a chamber and port. It had better volume output, but not quite what I expected. The walls needed more bracing than what I put in, aside from the humming box it sounded good. I used it in place of one of the jbl studio monitors in the video for a few days. (3 ways) I played a frenquency sweep from youtube with the original speaker build, it didn't have a very good low range with a few big spikes of sound from the cabinet resonating.
The sealed box I made after this had all of the clarity I wanted, but lacked the low end output of the ported cabinet.
Now I am building unconventional voight tubes with the components. ( usually only using one full range speaker... I think) combining both of the best parts of what I liked. Ported for volume and directional speakers for clarity.
these were worth the experiment, they slapped together in a few hours over the weekend for a fun project.
*_Not so, they are the same drivers and JS can adjust his tweeter with a potentiometer to get the balance right._*
Is the woofer in phase our 180 degrees out of phase with the incoming signal? If you are using the backside of the woofer to move the sound wave, it seems the woofer needs to be 180 out of phase...
You work really fast !
some people call me.
quick guy
A question about the design. Since the tweeter is aimed upwards, shouldn't it be sitting much lower so it can go past the ears?
I understand your idea, it makes a lot of sense for "general" directional speakers. What was originally interesting for me with the idea of the ohm walsh speakers was being "omni directional" I selected tweeters that had "great" off axis response. If you look at speakers from a reputable source they general have response charts posted for direct sound, 15 degree, 30 degree, and even 45 degree off axis response. The setup I transferred these tweeters to have them off axis slightly " above your head while on the couch" in a directional set. They are very crisp and balanced over a wide cone in front of them. When I think of ultra directional " point them at your ears" tweeters, horns come to mind. not so much a dome style tweeter.
@@r4zom interesting thanks
*_Great woodworking skills, but a bird-nest klutz when it comes to wiring up the potentiometer._*
I laughed at myself while it was happening, that's why i left it in the video. I was so excited to solder them in I Didn't think of the order of operations.
Did you hook them up backwards? So it projects the sound to the rear and not front of speaker?
I don't think that is a thing. This was torn apart and I used the components in another cabinet. check out that video!
@@r4zom my ohm Walsh's are hooked up backwards to project the sound up from the back of the speaker. Also the Walsh drivers foam in inverted. It's 100% a thing and I asked John from Walsh to make sure mine were not accidentally hooked up backwards
The Ohm Walsh cone is flexible and acts as a lossy transmission line so that waves propagating down the cone flex the cone so that it radiates outward. Sorry, but that stiff aluminum cone is totally not going to do that. I suspect the woofer will have some deep nulls starting at around 1 kHz and up. To get midrange you might mount a 3" sealed back driver above the woofer facing up or down.
These have been dismantled and repurposed a while ago. I’m still rocking these. m.ruclips.net/video/pGWIp1NfkoU/видео.html
Your cabinet is a pipe, essentially, and it has pipe resonances. I didn't see anything that would defy the pipe resonances. The music sounds very peaky as a result. If the four side walls were not parallel, that might work. Perhaps a damped labyrinth within. Ohm used to make pyramidal shapes that were almost columns, and the lack of parallel sides did the trick. I don't know what they are doing today with their columns. I think there are structures inside to break up the pipe resonances.
you're dead on. I ended up building and finishing these. ruclips.net/video/pGWIp1NfkoU/видео.html&t=
I see you used a conventional cross-over but if I'm not mistaken Ohm uses just a capacitor to protect the tweeter from low frequencies what looks like a cross-over is the sub-bass activator which has some really big inductors on it. Good try though.
Thanks, I am still a novice when it comes to all of this. I looked on a basic crossover program to make sure the speakers would work well at 2k crossover. I didn't really have any information on how or what ohm was using.
@@r4zom Ohm's x-o is at 8K. The woofer material is quite different (stiffer) than what you are using enabling the woofer to handle the higher frequencies.
@@Mike82ARP they must be some special woofers; to range from the lows up to 8k is wild
So what did OHM do to get better mid & low range than you got?
I did a bunch of vague guess work. Ohm probably did some math, prototyping, custom crossovers, and component fabrication.
@@r4zom But your cabinet is the same dementions?
@@porkchopspapi5757 The external dimensions are the ones listed on their website. I've never had the pleasure of looking inside one of their speakers; I would bet the insides are different.
If you ever find yourself wondering why the sound is so thin and -mot good- you might want to consider that they are way too close to the wall. 42" or more from any wall would be starters.
Idk the science behind sound reflection.
@@r4zom Well, first, for sure move the speakers out from the wall and move them around, better if you have 2 friends to help so you can sit and listen while they move, and you will likely hear the sound change quite a bit as they are moved around. The reason is sound is waves and when 2 waves cross paths they add together, so if they are in phase the sound gets louder, if they are out of phase the sound waves will cancel each other and it will be quieter. So when you have speakers that cause so much reflected sound (like these) then you have to find the place to put them where the net sound interaction is the most neutral and least impaired by reflections. I hope that helps some. Cheers.
I might be totally wrong with this type speaker, as I am used to open baffle dipole speakers, which means one side + phase and the other side - phase, the ohm style is all + phase, so the best distance will be different, maybe. The goal is to find the best distance to the surrounding walls for the least negative interaction between the direct sound and the reflected sound. This distance will also affect the sound stage. Play with it, have fun.
i understand that the sound is in waves depending on frequency. the idea behind the ohm walsh is to reflect the sound off of everything around them. i really didn"t move it around very much before i tore it apart. i had made a sealed directional speaker to compare side by side; the sealed speaker sounded way better so i scrapped this speaker completely and made these. ruclips.net/video/pGWIp1NfkoU/видео.html
@@r4zom I figured building open baffle speakers would be a piece of cake... after all, it's just a plank of wood... 3 baffles and about 15 variations on those and a whole bunch of other stuff (loads of measurements, tests, changes, 6 months effort and a different tweeter later and I have some epic speakers... but it wasn't easy... So I understand...
Knocked me off at least
what?
The white stuffing ruins midrange on speaker! ?
no
Walsh Ohm clones..SWEET project. I've built DIY speakers since 1992 & a few downfiring designs. Couple of things.That port is too close to the base to make any bass. Perhaps play with tweeter waveguide designs...get a mic n software from partsexpress.com make some measurements. I feel like a crossover calculator would help you. Maybe try flipping the polarity on the tweets..this design is going to require some crossover Tweaking magic to perfect,but will be worth it. Good luck on your tinkering.
Nicer try! I own a Walsh 3000 there if far more in design than just mounting the speaker upside down in a box.
*_I think JS has just proved what a rip-off the 'Walsh 3000' speakers really are, but nice try._*
RIP off? What?? JS says in the description his speakers lack lows and mids. I don't think he proved anything. It's a cool build and I hope he can create a good sounding speaker but definitely didn't discount the engineering of the ohm Walsh speakers.
@@phoenix11994466 Of course your incorrect. There is much design put into the Walsh design and the cabinets are like tanks they are actually double cabinets so there is zero resonance coming from the cabinet. In addition they do build their own drivers and cross overs. So nice try e IMM but you failed.
Why dont you just build an lxmini?
I built voight tubes after this one
It's ridiculous that you expect people to take serious audio advice from someone who slaps absurd noises all over his video.
which part of the video offered advice? please provide a time stamp of it.
There is an old thread on Diyaudio where someone made a Walsh type speaker like the one you tried. The thread is still up, but most of the pictures have been removed. Check it out. If you try this, let us know.
The thread is listed below.
www.diyaudio.com/forums/multi-way/100390-ohm-acoustics-walsh-speaker-remakes.html
Sticking an inverted woofer on a box is nothing like a Walsh speaker - as the resultant terrible sound clearly demonstrates
thanks for enjoying the video steve dribble, your positive critique fills me with joy.