I have these speakers I got for free. All I could find online about them is they are probably rated for 30w. What would be a good project for a large coaxial speaker like this, just a simple enclosure? Would I find specs on them in WinISD or some other software? Any information would be greatly appreciated, Thanks!
Attachments
That driver is in the 1971 catalog. There is not much information. It is described as an air suspension driver. Free air resonance 24hz. 28 watt power capacity. No impedance listed. Not much to help you design a cabinet.
I saw that post. And I found the speakers in the 1974 catalog as well. Still not a lot to go on though.
Hmm, RS sold it as a replacement speaker and their consumer standalone speaker with an AS 12" is the same size as an AR-3[a], so seems reasonable that it will work fine by contemporary standards.
I'm just not sure what size enclosure to build. From what I have read, air suspension frequency response gets lower as the enclosure gets bigger? Not sure what size or shape enclosure would be best.
in ~1965-66 I ran a Jensen - Knight 12FR and later, Utah 12" Celesta in a 5 cubic foot cabinet eight-3/4" diameter holes for a vent. RCA-Fan recommended 5 cubic foot sealed for the Celesta. FWIW, I figure this RS is similar. New capacitors are probably in order.
I reckon that means an internal volume of around 2 cu ft.
That's the sort of 'standard' volume for the 12" drivers of the day.
That's the sort of 'standard' volume for the 12" drivers of the day.
Yep, 2.3 cubic feet.
General question: can you get a good idea of how a set of speakers will sound from listening to just one? Or do you need both to really know? It would be nice to just build one enclosure and know if it is worth making a matching one. I've never built a set of speakers so I wasn't sure.
General question: can you get a good idea of how a set of speakers will sound from listening to just one? Or do you need both to really know? It would be nice to just build one enclosure and know if it is worth making a matching one. I've never built a set of speakers so I wasn't sure.
Yes, 2.3 cu ft external so, say, 2.0 cu ft after allowing for thickness of enclosure walls etc.
Nothing to stop you making a temporary enclosure for one loudspeaker to see how it performs.
It only has to be of temporary construction. Some builders construct a mock-up box out of stout cardboard - good enough to get an idea of the system's potential.
Nothing to stop you making a temporary enclosure for one loudspeaker to see how it performs.
It only has to be of temporary construction. Some builders construct a mock-up box out of stout cardboard - good enough to get an idea of the system's potential.