Has anyone built the mini Pipe Oh hinted by the design notes of the Pipe Oh?
You know the six footer with a single 8 inch driver?
What kind of equalization would I need? Would a pair of Aleph 5 be enough to drive them? Or maybe a Conrad Johnson MF2100?
https://www.firstwatt.com/pdf/art_elpipeo.pdf
I want something that will add just a little bit of bass oomph to a Maggie 1.7 / A2 combo.
You know the six footer with a single 8 inch driver?
What kind of equalization would I need? Would a pair of Aleph 5 be enough to drive them? Or maybe a Conrad Johnson MF2100?
https://www.firstwatt.com/pdf/art_elpipeo.pdf
I want something that will add just a little bit of bass oomph to a Maggie 1.7 / A2 combo.
Haven’t built one. Have most of the parts for a pair. Unlike Nelson’s ElPipeO, this one has a modeled nass-loaded terminus. Each pipe uses a 7” Easttech driver. In the middle.
Free for anyone who can pick them up and will finish them.
Flanked by a giveaway isobarik project with 8x12” and a set of finished ready to use woofTs. Each comes with an active XO (could really use some detailing).
dave
Free for anyone who can pick them up and will finish them.
Flanked by a giveaway isobarik project with 8x12” and a set of finished ready to use woofTs. Each comes with an active XO (could really use some detailing).
dave
Attachments
Oh yeah... I remember that picture... unfortunately you are far away from SoCal.
How did you load it? I was hoping to just add the woofer to the end of the pipe, add an amp, some eq and go at it.
Perhaps paint it black and add some Hello Kitty stickers to make it more domesticated.
Those isobarik boxes really look neat.
How did you load it? I was hoping to just add the woofer to the end of the pipe, add an amp, some eq and go at it.
Perhaps paint it black and add some Hello Kitty stickers to make it more domesticated.
Those isobarik boxes really look neat.
There is a mass-loaded terminus at the other end from the driver.
This design really lends itself to an ML-TL especially if you want to shorten it.
dave
This design really lends itself to an ML-TL especially if you want to shorten it.
dave
Mass loaded as a passive radiator?
I have no issue with a 6 or 7 foot tall, foot wide column in the corners. Mostly I want to make it fast, simple, cheap so I can hook it up and drink some good 9% IPA while I break it in.
Back in '81 I built the Chili Can Speakers.... which were empty gallon cans of chili, one end was open, the other end held a six inch Pioneer coax car speaker, I stuffed the interior and mounted them under the dash of my '70 Vega GT. Drove them with a Pioneer cassette deck. It sounded great. Just make sure to use the Chili Con Carne with NO beans...it sounds faster and lighter.
It worst comes to worst, I can build the chili can speaker MkII and mount them on the Mini Pipe Ohs... they will make awesome shop speakers out in the garage when spring comes.
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Mass-loaded as in restricted terminus to the TL. It looks like a port.
Like this, but the woofer in the end and a circular prism as opposed to a rectangular one.
dave
Like this, but the woofer in the end and a circular prism as opposed to a rectangular one.
dave
Excuse my ignorance on such... where/how can I model/ calculate such things? I assume I got to take into the account the geometry of the enclosure/vent and the characteristics of the driver. For such a device, I'd rather not have a LP crossover at all, but run it wide band, if at all possible. I figure if the driver is shooting vertically, in or out of the tube, the high frequencies will be attenuated mechanically.
As I might have mentioned earlier, I'm in the happy circumstance to have some extra amps. But I don't have Nelson's 1000 wpc behemoths. My available amps run from 60 to 100 wpc into 8 ohms, or 90 to 200 into 4 ohms. Class A, AB and D. So, I could play around with them. In my experience, the ICE amps have some of the best bass damping in my collection so that might work.
To model it you need a TL modeler. Martin King’s is the benchmark but NLA, so HornResp is the leading candidate. There is also this one: https://www.diyaudio.com/community/threads/transmission-line-modelling-software.220421/
I just ask Scott.
dave
I just ask Scott.
dave
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Ah, ElPipeO. I remember seeing this on the internet some time back. I'm tempted to have a go at making one. Be sure to post if you do it. Not much to lose by strapping a speaker on a concrete former and see what happens.
I'm no speaker expert, but here's an accessible online speaker calculator: https://speakerboxlite.com/
I'm no speaker expert, but here's an accessible online speaker calculator: https://speakerboxlite.com/
A very long time ago I put a 8" Tang Band in a long 8" tube. I remember it seeming to provide some bass. I'm sure it wasn't ideal. I can't remember if I did any modeling, math, or EQ'ing. So, not the most helpful, but I figured I'd chime in to say "yes"!
Paul
Paul
I'm more and more inclined to buy a few of them one gallon cans of chili con carne and use them to build my Chili Can Woofers Turbo V4 ( that's the one with four chili cans per side ).
The main thing that is currently holding things up is that it's winter and, even in SoCal, it's too cold to keep the doors and windows opened to aerate the house. That's a lot of chili to eat!
OTOH, the design lends itself to growing... so I could start with the V2 and eventually move up to the V6.
Duct tape it, baby... duct tape it.
And in the news... massive smog clouds in Southern California.... origin unknown. Authorities are puzzled.
