Ideas for a big, bad, high-efficiency man-cave sound system

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Thoughts? Ideas?
Well, that's a start! 😉

6x6M is a good size, about 50% bigger than the garage I took over. See Here
Mine has the luxury of a 3.3M ceiling height, which really helps.
My system is a highly modified Altec VOTT A5.
  • 15" Altec 416-A woofers
  • 1.4" Altec 288 compression drivers on Altec 1005 multicell horns
  • Fane bullet tweeters.
Acoustic crossover points are about 750Hz and 9Khz. -3dB points are 28Hz and ~17Khz.

Seems to be plenty of speaker for the room. Tho a buddy wants to give me his big Meyer Sound 2x18" powered subwoofer. That would be a lot of fun, but where would I put the beast?
Anyway, because of corner gain, I have to reduce frequencies below 80Hz on The Altecs by 3dB. Too much low end bloat if I don't.

My other speakers are Open Baffle. 2X18" woofer + 8" fullrange each side.

Your plan seems like a great start. I'd just say go with double 15" drivers on each side if you can. IME, the double 15s just work great, even for low level listening.
 
One of the myriad of ways to skin your cat...

bass horns do fold, btw... these are not folded.

numerous variations are possible.

keep in mind that the HF horns need to be placed back for time "synchronization" (aka "Time Alignment" tm somebody I can't recall), or else delay needs to be added by digital means. I am pretty certain that this setup was posted somewhere and later on the owner moved the horns forward and applied just that method of delay.
 

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One of the myriad of ways to skin your cat...

bass horns do fold, btw... these are not folded.

numerous variations are possible.

keep in mind that the HF horns need to be placed back for time "synchronization" (aka "Time Alignment" tm somebody I can't recall), or else delay needs to be added by digital means. I am pretty certain that this setup was posted somewhere and later on the owner moved the horns forward and applied just that method of delay.

I hate that pic, every time I see it I want to build it, lol.
 
Too much testosterone mixed with loudspeaker design going on here. It's not about bigger, more, etc. etc. It's about quality throughout. Kind of the "I want a man with a gentle touch" approach. Finesse not macho.

Weeeellll....hang on a sec...isn't part of the reason you prefer using pro drivers in your own designs for better sensitivity and the lower distortion that comes with it?

A 15" pro driver mated to a titanium compression tweeter doesn't exactly scream conservative. 😀
 
Too much testosterone mixed with loudspeaker design going on here. It's not about bigger, more, etc. etc. It's about quality throughout. Kind of the "I want a man with a gentle touch" approach. Finesse not macho.

Earl, c'mon as the original poster i've set the parameters of this thread. Please don't hijack. There are enough Gedlee threads in diyaudio to keep you happy surely?
 
I'm not trying to hijack, I have a lot of experience in this area! You aren't interested in my POV?

I view a 12" woofer and a 1" compression driver in the mid range of what is being talked about here. It is not at either extreme, large or small. Turning the room into a LF horn is. And for what? you still have the all the room modes - the horn doesn't do anything about those.

I just hate to see people steer the OP into a "macho" system just because he can. It is not the right thing to do.
 
I view a 12" woofer and a 1" compression driver in the mid range of what is being talked about here. It is not at either extreme, large or small. Turning the room into a LF horn is. And for what? you still have the all the room modes - the horn doesn't do anything about those.

Wouldn't having a large bass horn where the exit is pretty much right in your face help with the problem of room modes?

Regardless, I think the reasoning is mainly just fun, and the desire to have bigger, faster, stronger toys. As far as modes go, they're always going to be there...I don't think anyone goes shopping for a stronger amplifier or looks at a new speaker design and says "bah, screw it, room modes will still be there."

I would love to turn my media room into a giant bass horn, but it's the cost of materials that stops me, not worrying about frequency modes that will be there regardless of whether I construct it or not, simply because a giant, 110db efficient octo-LMS5400 horn with a PKN-10000-U that goes down to 9hz puts a huge ******** grin on my face.

(Brain dropping🙂 What if the horn was built in such a way that it essentially acted as a canted wall?
 
To me, waveguides are for directivity control and nothing else. And, only multiple subs solves the problem of room modes. Given these two points I find no support for using bass horns in a small room. It doesn't matter how big or small they are, I just don't see the point.

Of course if "machismo" is your goal, then sure why not make the whole house a horn? just don't try and claim that there is some acoustical reason for doing so.

Even if you were to sit in the mouth of the horn, there would still be modes and a rough frequency response. Even in HF horns it is difficult to completely eliminate the standing waves/modes in a device.
 
Too much testosterone mixed with loudspeaker design going on here. It's not about bigger, more, etc. etc. It's about quality throughout. Kind of the "I want a man with a gentle touch" approach. Finesse not macho.

What would use a gentleman ? Imagine you have the possibility like SL but with even more liberty to make your own 10 to 15" driver !

A modern sandwich cone from north Europe or Focal with stronger motor than low efficienty or even electro magnet like EMS-France (old Fertin drivers) ?

What sort of Neodynium hand in a velvet glove should you use in relation to a non commercial approach ? (in the absolute : if all your customers would come from Qatar with no problem of pricing !)
 
Of course if "machismo" is your goal, then sure why not make the whole house a horn? just don't try and claim that there is some acoustical reason for doing so.

I guess that depends on your definition of "acoustic reason", I guess. A smooth, flat response at conservative levels isn't #1 on everyone's list.

Same reason some people like to drive wildly impractical cars at irresponsible speeds. Yeah, they get crappy gas mileage, don't handle well, have no trunk space, no creature comforts...but damn, going 390mph across Bonneville shooting salt rooster tails and flame is just great fun!
 
"conservative levels" - not here. I can cause hearing damage so I think that is "sufficient".

Sure, I understand Machismo, I'm just too old to care. But you young guns can spend your money on those foolish toys if you want, I get it. But I think someone should point out to the OP that it is not necessarily the most efficient or high value approach. I'd love to own an NSX, but an SI is about all I can afford. But it is one cost effective option that is for sure.

Eldam - I cannot quite understand what you are talking about. I'd love to respond, but I am not sure what the question is, or if there even is one.
 
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