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Old 15th January 2013, 07:26 PM   #1
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Default Adding Tweeters???

Hi guys, been racking my brain over this for some time now, hopefully someone can help me out. I own a fairly large active speaker, used to belong to an electric organ i think, had the back panel off and as far as i can see electronics, drivers and everything all in good condition. After a little research on the drivers i found they are top of the range although are quite old and can only find out a little info on them, one 15'' bass driver and two (i think) mid-range 12" drivers. So i do a little (amateur) DJing and am hoping to use it in my bedroom sound rig. I spin all sorts of EDM, so would i be right in assuming i'd be needing something to cover the trebles if theres nothing in the cabinet able to re-produce the high ranges already?? If so i'd quite like to add them to the existing cabinet (its huge and theres plenty of room inside), What would be the easiest way to amplify said tweeters? To add some sort of plate amp solely for them? Pretty handy with DIY in general and quite capable with a soldering iron so at first glance it looks as if i could easily splice the power input and divert power to the tweeter amp aswell. Whats really baffling me is how to get the sound input to this new amp/tweeters Preferably without having to interfere too much with the existing amplifier (looks extremely complex and not something i should be fiddling around with too much), obviously ill need some sort of crossover too. Incase you hadnt already noticed im a bit of a speaker diy noob so any help and advice anybody could give me would be greatly appreciated
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Old 15th January 2013, 07:46 PM   #2
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Also if it helps at all the audio input is a 5 pin MIDI socket.
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Old 16th January 2013, 04:44 AM   #3
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That's too vague Elroy...
No one can help you in a crazy project like that. You will be spending your MONEY and you would be spending your TIME (and ours) unless you know the full T/S specs/parameters for those drivers all you're doing is Vintage Audio destruction and radical scavenging (as opposed to restoration and learning). Isn't it better just to buy a kit?

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Last edited by Inductor; 16th January 2013 at 04:48 AM.
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Old 16th January 2013, 08:20 PM   #4
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I do actually have the T/S parameters for all the drivers direct from the manufacturers. Didnt feel it neccesary to post them here though as the plan is to leave them in the original enclosure, all im trying to do is add a pair of tweeters to the setup (obviously not as straight forward as i originally thought). These speakers, after being stripped of their beautiful oak veneer, manufacturers labels and grille cloth, leaving nothing but an unsightly bare chipboard enclosure, were actually bound for a skip, i came along just at the right time and saved them from this, so contrary to ''Vintage audio destruction and radical scavenging'' i like to think of it more as giving them a new lease of life perhaps? But hey you guys are the experts here not me, so thanks for your feedback its been helpful but id still be interested to hear if anyone else has any opinions
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Old 16th January 2013, 08:29 PM   #5
sreten is offline sreten  United Kingdom
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Hi,

Just drive two tweeters from the terminals of the two 12"ers.

Normal tweeters will need a crossover and might need L-pads for level.
Piezo's will work without a crossover, but there are simple networks
than can improve performance over a straight connection.

What driver are the two 12"ers ?

rgds, sreten.
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Old 16th January 2013, 08:54 PM   #6
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Hi. Really, its as simple as that? Great! They're actually 10''ers dont know why i said 12". They're Fane Acoustics "The crescendo" Parameters here http://www.fane-acoustics.com/downloads/CRES10M.pdf . And the bottom end is a "Richard allen HD15" parameters are in an attachment. Thanks for helping out, much appreciated!
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File Type: gif Richard allan parameters.gif (25.7 KB, 171 views)
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Old 16th January 2013, 11:44 PM   #7
sreten is offline sreten  United Kingdom
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Hmmm......

Like some things effecting an improvement is quite easy, but effecting
the best improvement not easy, and open to debate and conjecture
as to what the approach might be based on the information available.

Really need to know the baffle layout, and if the the two mids are for
stereo (with mono bass), or its just mono, to sensibly advise further.

For sure it seems like the top end would be missing.

rgds, sreten.
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Old 17th January 2013, 01:49 AM   #8
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Quote:
Originally Posted by Elroy starr View Post
Hi. Really, its as simple as that? Great! They're actually 10''ers dont know why i said 12". They're Fane Acoustics "The crescendo" Parameters here http://www.fane-acoustics.com/downloads/CRES10M.pdf . And the bottom end is a "Richard allen HD15" parameters are in an attachment. Thanks for helping out, much appreciated!
That's half way home. You should have mentioned it in the first place.
Noting that the ECONOWAVE comes to mind. Also this tweeter Selenium ST200 but unlike the piezo it needs crossover. The Fanes are nice drivers though.
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Old 17th January 2013, 06:25 AM   #9
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Great find!
It's a shame you're so far away. Those speakers could do with being measured really.
If you're serious, I think you're best chance would be to buy a copy of this: Loudspeaker cookbook and for now you could read the sticky at the top of the page: Designing crossovers
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Old 19th January 2013, 03:19 PM   #10
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Sorry for the late reply guys, hectic few days. Right ok, as ive already said im quite in-experienced in much to do with diy sound, however im a very fast learner and i follow instruction brilliantly! So by baffle do you mean the enclosure to which the drivers are mounted? What kind of imformation would be helpful, general dimensions of the box etc? And as for the mids being stereo/mono, What would be the easiest approach of working this out? Sorry for all the stupid questions, and thank you all for your help and feedback its much appreciated! fatmarley, thanks ill defiantely have a read of that
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