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Old 12th December 2012, 03:05 AM   #601
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unfortunately Don, I dont have the specs on the drivers i used. i just based them off the tangband drivers.

LEDs sound like a nice idea too
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Old 12th December 2012, 03:20 AM   #602
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If i was looking to build a set of reference speakers for producing on im presuming foamcore isn't the material to be using?

Im thinking ideally i need similar response characteristics to what the produced music will be played on. So any ideas how id go scaling down a set of four ss15 subs? I have a set of four 6inch car audio drivers id be wanting to use Vdo Dayton drivers from a split system.
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Old 12th December 2012, 08:12 AM   #603
xrk971 is offline xrk971  United States
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Quote:
Originally Posted by klampykixx View Post
If i was looking to build a set of reference speakers for producing on im presuming foamcore isn't the material to be using?

Im thinking ideally i need similar response characteristics to what the produced music will be played on. So any ideas how id go scaling down a set of four ss15 subs? I have a set of four 6inch car audio drivers id be wanting to use Vdo Dayton drivers from a split system.
Are you still looking to build a fullrange studio monitor or were you looking for a subwoofer?

There is a whole forum on subwoofer design if that is what you are after, we are strictly fullrange here. I don't think foam core would be good for subs as there would be significant spl difference between inside and outside of cabinet with amount of air that subs move using long stroke. You really want a stiff, dead sounding cab, like MDF...

And as much as I love DIY, I listened to a pair of biamplified active crossover studio reference monitors yesterday with 5 inch drivers and 1 inch silk dome tweeters in a BR ported cabinet with waveguidefor tweeter, and they sounded really good. I am not sure you can do much better once you get parts to put together yourself (price - these were $200/pair, or performance). In building complex horn cabinets, that is where the diy'er has an advantage and can make something better than commercially available stuff at a reasonable price.

Last edited by xrk971; 12th December 2012 at 08:29 AM.
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Old 12th December 2012, 10:09 AM   #604
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Im not looking to build a sub. More a full range speaker better coax or whatever but it needs to have a similar sound to the horns i play on. Its gonna make it hard coz i done have any specs on any of the drivers i have here.
I've got some Sony 7inch woofers , sharp 6inch , jvc 5inch inch, kenwood 6inch,VDO 6inch and three set of 6x9 car speakers. None of which i have specs on.
Id have to sit and listen to them all decide which i like the sound of then measure them out. Its something ive never done tho... So not sure how reliable that would be.
Any suggestions?
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Old 12th December 2012, 10:24 AM   #605
xrk971 is offline xrk971  United States
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Measuring them requires equipment software and know how. I'm sure it can be done but not the most cost effective solution considering how many excellent FR drivers are available for a reasonable price. Many of the Tang Bands, Mark Audio, Fostex, etc. are used and would be recommended by the folks in this forum. If you are serious about a good reference monitor, I would not mess with unknown drivers. If you are building for fun and want to see what an old driver without specs can do then use them. I think Planet10 would probably be able to give you a recommendation on a driver that works for what you need. Personally, I have been eyeing the MA CHR 70 as a good combo of price and performance. I would also look at the TB bamboo paper cone driver too. The Fostex are great if you want high efficiency but don't have much stroke for punchy bass which is what you are after I think. For best value in terms of sound quality and bang for the buck, I really like the Vifa tc9fd
- but you probably figured that out already. If you can go up in price I think the MA Alpair 7's are promising. I hope this helps.

Last edited by xrk971; 12th December 2012 at 10:27 AM.
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Old 12th December 2012, 10:34 AM   #606
xrk971 is offline xrk971  United States
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Klampy,
When you say it has to sound similar to the horns you play on, are you referring to the compression loaded driver horns used for rock band type stage speaker boxes? If that is the sound you are after, I have to say that foam core can be used to make a horn just like those in the speakers you are talking about (curves and all on a tractrix) and mount it to a compression driver. Is that what you are talking about?
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Old 12th December 2012, 10:47 AM   #607
xrk971 is offline xrk971  United States
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Quote:
Originally Posted by 6L6 View Post
Lol.




It's the same junky stuff from the dollar store, just black. But it is easy to work with! I actually decided not to use the sheet of 'good' foamcore because it will be much harder to bend.

Also, a bit of PVA in the scores once the hot glue is set is making the curves much more solid.




I don't have a face on it. I need a tube of liquid nails.
Why not PVA the top face on, liquid nails may not have nice clear color like white glue and may mess with your 'nice curves' . Or use the Gorilla glue that Cochleus recommends - sounds perfect as it is a gap filler, dries clear, and sets in about 15 minutes which is enough time to work.
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Old 12th December 2012, 11:15 AM   #608
Colin is offline Colin  United Kingdom
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As an aside, the Wharfedale 708 speaker used a similar construction method in the 1990s.

It used a foam core wall between formica sheets to make a cheaper, lightweight competitor to the Celestion Sl600 aerolam speaker.

I remember reading reviews of it at the time but can't find any on Google.
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Old 12th December 2012, 01:21 PM   #609
xrk971 is offline xrk971  United States
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Quote:
Originally Posted by klampykixx View Post

and a short vid off my phone for XRK

20121211_193632.mp4 video by klampykixx | Photobucket

I finally got to see/listen to your creation on video (had to use my regular computer as the android tablet was unable to see the video - probably a lack of flash support). Your foam core quad driver single mouth horn box ROCKS! (although the range of your phone's microphone is not doing it justice) Very cool. More of us should upload vids or mp3's of our speakers cranking out the tunes. I have been meaning to do the same with a mp3 recorder (it has some decent XY condensor mics that should give sense of bass/highs and stereo separation). Very nice job and it looks very clean and professional actually.
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Old 12th December 2012, 03:10 PM   #610
adason is offline adason  United States
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I have not gone thrue 60 pages of this thread...are there and frequency response measurements in this thread?

(I mean no desrespect, I just want to see facts)
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