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'Mini Soundsystem' Questions..

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Topic: 'Mini Soundsystem' Questions..
Posted By: mashed
Subject: 'Mini Soundsystem' Questions..
Date Posted: 19 July 2010 at 11:47am
Hello, me & a mate are considering building a small 'scale model' of 3 way soundsystem for the living room..part novelty.. but of course we'd like it to sound decent!
 
We would like some classic design e.g. scoops for the bass. I was wondering if anyone had any dimensions / plans for a 'mini sound' ..or ..would a scoop sound good if its dimensions were reduced to 1/3 of the usual size? or would a different design be (much) more effective?
 
Has anyone tried anything similar by any chance?
If anyone could give some advice on how to go on with this project, it would be appreciated!
 
Thanks
 
 



Replies:
Posted By: Saul
Date Posted: 19 July 2010 at 11:57am
haha - im doing exactly this for some friends at their house. i decided i would build them a staiper micro 15, and an eminence 10" mid, and a 1" top on a short horn, all for really cheap. 


Posted By: darkmatter
Date Posted: 19 July 2010 at 12:15pm
Originally posted by mashed mashed wrote:

would a scoop sound good if its dimensions were reduced to 1/3 of the usual size?


no.

physics means the scale model thing doesn't work. if for example a scoop that can play down to 40Hz was scaled down 1/3 of original size, it may then be able to go down to 120Hz - you can probably see the issue here.

you could achieve the effect you want by using a large reflex chamber instead of a horn and making the port look like a scoop.

alternatively there are a number of rear loaded horn designs for home hifi that might give the right aesthetic.


Posted By: bitzo
Date Posted: 19 July 2010 at 12:52pm
interesting I'm working on the same issue for my home. I already have a 10" ciare cw254, and striclty external dimension, I'm working on some tapped horn layout.

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http://www.unitedroots.it - United Roots SoundSystem site


Posted By: jossdude
Date Posted: 19 July 2010 at 1:19pm
I did something simular but it was all just guess work and did the dread thing of scaling down a full sized plan for the scoops. They dont sound too bad at all tho for some front room fun.






Posted By: pfly
Date Posted: 19 July 2010 at 2:20pm
Joss how have the 8643 Hybrids behaved?


Posted By: levyte357
Date Posted: 19 July 2010 at 2:26pm
Originally posted by darkmatter darkmatter wrote:

Originally posted by mashed mashed wrote:

would a scoop sound good if its dimensions were reduced to 1/3 of the usual size?


no.

physics means the scale model thing doesn't work. if for example a scoop that can play down to 40Hz was scaled down 1/3 of original size, it may then be able to go down to 120Hz - you can probably see the issue here.


Exactly.

Why not just have 18" Mini scoop, and  2x12"+1" reflex cab on top running 80hz upwards ?

Would sound great close up, or in the kitchen/upstairs..

No living room would need more. LOL


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"Who am I? I'm the guy who does his job.. You must be the other guy".


Posted By: jossdude
Date Posted: 19 July 2010 at 4:38pm
Originally posted by pfly pfly wrote:

Joss how have the 8643 Hybrids behaved?

Really well, I have loved them. Been out a few times with them, not loads yet but seem to have more things coming my way. Am really really enjoying them tho. Thankyou.

Sorry to hi-jack the thread  a little


Posted By: Meat
Date Posted: 19 July 2010 at 6:10pm
If I was building a mini soundsystem I'd probably be thinking about the double folded tapped horns this guy builds for bass:

=http://www.volvotreter.de/th.htm%5d%3cimg%20src=">
http://www.volvotreter.de/th.htm - http://www.volvotreter.de/th.htm


Posted By: subbass
Date Posted: 19 July 2010 at 7:12pm
i agree with this man.

an 8" or 10" scoop would just be awesome Big smile


edit: surely someone must be able to make / design one? i know that it wont be anywhere near as loud as its full size relatives - but for home use, hitting 110db and going low would be plenty Embarrassed

..and it would look pretty awesome


Posted By: bitzo
Date Posted: 20 July 2010 at 8:44am
yesterday I finished to design mine. but it's not a scoop. Sorry. Tongue

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http://www.unitedroots.it - United Roots SoundSystem site


Posted By: toastyghost
Date Posted: 20 July 2010 at 10:06am
Originally posted by Meat Meat wrote:



If I was building a mini soundsystem I'd probably be thinking about the double folded tapped horns this guy builds for bass: =http://www.volvotreter.de/th.htm%5d%3cimg%20src="> http://www.volvotreter.de/th.htm - http://www.volvotreter.de/th.htm


They look good but spotted a glaring error:
Quote I was very curious on what they are capable of. And after a weekend of listening I have to say that the result is way beyond my expectations. Sure, the big one goes deeper and louder, but they just sound great. Very well controlled and smooth, down to the lowest registers. I found myself several times not believing that only the two small TH's were running (but the big one and the Klipsch were disconnected). They are able to produce very remarkable volumes, much more than usually required for listening music as well as HT. They are capable to keep up with my mains in every way.


The guy didn't remove or short out his huge TH enclosures when testing the smaller ones, so in effect he was listening to 4 cabs, not 2!


Posted By: darkmatter
Date Posted: 20 July 2010 at 5:00pm
Pure guesswork but I don't think they were placed side by side for testing? I've seen positive reports for that sort of layout using tangband drivers elsewhere (from people who didn't own beastly 20hz horns also) so hopefully nothing to worry about :)


Posted By: davey t
Date Posted: 20 July 2010 at 7:12pm
If you scale down a bass horn eg a  superscooper, then the horn wont be long enough to reproduce any low frequencys and you will get honky nonsense. You need something with a lots of folds to make up the long horn length... as demonstrated above

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Minirig portable soundsystem movement


Posted By: mashed
Date Posted: 21 July 2010 at 9:27pm
Thanks all !


Posted By: _djk_
Date Posted: 22 July 2010 at 2:47am
"The guy didn't remove or short out his huge TH enclosures when testing the smaller ones, so in effect he was listening to 4 cabs, not 2! "
 
 
Hmm, it plays 104dB/1W/1M, I'd say that was remarkable too for a 35L box!
 


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djk


Posted By: Meat
Date Posted: 22 July 2010 at 10:26am
Cor, never seen that simmed before. Thats probably better for in terms of cab size and input vs SPL compared to a lot of 15 and even some 18 reflexes although they probably suffer less power compression.


Posted By: Strange Daze
Date Posted: 22 July 2010 at 10:43am
file:///C:%5CDOCUME%7E1%5CCSKRZY%7E1.RWS%5CLOCALS%7E1%5CTemp%5Cmsohtml1%5C01%5Cclip_filelist.xml - .


Posted By: Strange Daze
Date Posted: 22 July 2010 at 10:45am
In regards to a mini-scoop...I have a friend that just scaled down the eminence design to fit a 6£ driver. He wanted it for his car. I must say, as long as you’re not expecting pro audio results, and are just having a giggle….there’s nothing wrong with it at all.
Eminence to have a 12” scoop design though, which I’ve considered building for my home DJ workstation. A pair of 12” scoops to go under my home 12-6-1” - and I’d be very happy. (yes my neighbours are old and deaf lol)


Posted By: mykey-
Date Posted: 22 July 2010 at 12:59pm
40hz is achievable from a 8'' scoop

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BbbBBRAAAAPppBBBBbgushhhhhhhhssshhhhhGrAbRAAAAAAPPPPPp = Dubstep


Posted By: subbass
Date Posted: 22 July 2010 at 3:48pm
Originally posted by mykey- mykey- wrote:

40hz is achievable from a 8'' scoop

prove it .. with plans Big smileTongue


Posted By: jeddere
Date Posted: 22 July 2010 at 5:33pm
Recently finished building a transmission line for home use.
 
Designed to play 40 Hz up to around 300 Hz, measured fairly flat when set-up outside.
The cone excursion doesn't rise up steeply at low frequencies so there's no need for a high pass filter for home usage.
 
Driver is Monacor SPH 165-CP
 
 


Posted By: Meat
Date Posted: 22 July 2010 at 5:58pm
That looks great. Nice design.


Posted By: LjudLahger
Date Posted: 22 July 2010 at 8:08pm
Thumbs Up


Posted By: Malco
Date Posted: 24 July 2010 at 2:14am

Looking good!

 



Posted By: Saul
Date Posted: 24 July 2010 at 12:28pm
Originally posted by jeddere jeddere wrote:

Recently finished building a transmission line for home use.
 
Designed to play 40 Hz up to around 300 Hz, measured fairly flat when set-up outside.
The cone excursion doesn't rise up steeply at low frequencies so there's no need for a high pass filter for home usage.
 
Driver is Monacor SPH 165-CP
 
 

That is one cool looking speaker Clap



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