What Do You Think . . . and How Does It Work?

PVC pipe for a speaker box is a hoax. After all the effort wilson and magico go to with their cabinets, PVC cannot be the answer. 

Linkwitz was one of the contemporary gurus of speaker design (think LINKWITZ-Riley crossover, etc). His site is full of invaluable info

i dont know any speakers made by him. The crossovers bear his name but they were WRONG. 

https://meniscusaudio.com/product/mandolin-loudspeaker-kit/


https://www.madisoundspeakerstore.com/2-way-speaker-kits/seas-mimir-2-way-speaker-kit-pair-parts-onl...

Here are 2 that you could consider!  Both use nice drivers and the kits aren’t too expensive.

I’m trying to think...

https://youtu.be/mlejsgxOxrU

Usually when I think ... I doesn't work well.

@gregm:  I’m don’t really have the room for them, especially since they need space to sound their best.  But for the price, they are interesting.  If my patio were covered or enclosed, that might be an application worth considering.

I wondered what the two drivers at the top, one facing up and then one facing forward right above it, do for the sound?  

Looks like there should be a submarine in the basement. 

twoleftears2,407 posts05-20-2020 9:53am

Didn’t HSU make home subs from cylindrical cardboard concrete forms back in the day?


Sonotube, and a lot of us, poured the concrete, too. Concrete Tubes are dead silent. No problem, with vibration, just placement.. 18" vary from 60-100 lb a foot. Depends on wire size, the mix and thickness. Taller the tube deeper the tone. I used an underground vault on time.. Two PA drivers. It has had, 12,15,18" drivers. Settled on 15, last time I looked 1 block of BASS... 2-400 watts

"T" base bens too. The uprights were passives the crossbar was active.
Talk about boom boom, very easy to room tune also.. length or PR, true glass breakers..Very space hungry laying down..

OP is on to an oldie for sure, they been around for a while. I’ve seen a few, different designs, We called them 3x2. Three way, Two driver

Pipe organ design, Length x diameter.... for the blend....... ahhhh the blend
Can also stuff the tube and move the stuffing up and down for tuning.

Bull horn style is fun to.. Honk Honk.. Think Ampa...


Regards

@stereo5 , lil better everyday!  Thanks for asking.  
@bob540, I’ve been somewhat obsessing over speaker kits lately. I’ll send over my favorites here in a sec...

@b_limo 

+1.  My feelings exactly.  How is the leg coming along?

Didn't HSU make home subs from cylindrical cardboard concrete forms back in the day?

I’m sorry, and I’m not trying to be a jerk, but they’re pretty dang ugly in my humble opinion.  You asked... I answered!

i heard these speakers at AXPONA a few years ago.  it was in the madisound room that sells these kits online.  
very incredible deal for the $230 for the kit less the PVC piping.  in this case they used minidsp for the active crossovers.  
sound was deep, rich and had very good bass impact. not the last word in midrange transparency though.  

Must be half a dozen times now I've suggested people build a sub from ABS, lay it on the floor or stand it in a corner. Hsu made a sub for cars that was little more than a pipe with a driver at one end. Its physics- the pipe is a good shape, cheap, easy, and favors the physics of acoustics. On the inside its shape is strong and resists vibration. On the outside its curves diffract and disperse. What's not to like?

A bit unrelated but look at his recommendations for speaker placement and how he uses a different speaker placement for a speaker with a different radiation pattern. I think this shows nicely how speaker placement "calculators" are at best approximations and why you need to adjust the speaker (and acoustics if possible) to match the room and speaker.

Linkwitz was one of the contemporary gurus of speaker design (think LINKWITZ-Riley crossover, etc). His site is full of invaluable info
The Pluto is an impressive speaker for its size, it needs room around it to breathe (IMO) and will reproduce details and dynamics. What it won’t give is the full scale of a large orchestra -- no small speaker will do that -- but it acquits itself better than most (the small ATCs, well driven, being another contender -- to my limited knowledge).
Are you considering it?

Plenty of people have built the Pluto and most reports suggest it can compete with designs costing multiple times more.

The Pluto might not quite get you to the levels of the LX521 or the Orion, but then, as things stand, not much else will either.

Given time I’d fancy having a go myself as going active seems to be the coming future of high end loudspeaker designs.