AudioRoundTable.com - RDF feed
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description: Audio advice and discussions with audiophiles and professionals. Free discussion forums, open to all and frequented by industry experts. Ask questions and get advice on stereos, speakers, hi-end amplifiers, pre-amps, home theater, tube hi-fi, turntables, vinyl, tweaks, music, films, video, DVDs and more.
items: Full range speaker
items: Re: Full range speaker

Full range speaker
type: item
description: hah, came accross a 12" full range speaker today :P a bit stupid. http://www.eighteensound.com/pdf/12TC300.pdf you need acrobat reader to see it. I always wonder how could a fullrange speaker sound good when its able to develope parallax across the diaphram even. Notice the rather bumpy response up high on that speaker. It does 70Hz-16KHz
creator: Adrian Mack
date: 2003-12-26T07:54:37-00:00

Re: Full range speaker
type: item
description: That driver looks to be mixed bag: 1.) Very good efficiency; 2.) Good power handling capacity; 3.) Ragged high end response (not unusual for extended range drivers); 4.) Severe roll off above 15,000 Hz (to be expected from a large driver); 5.) Severe off axis roll off of higher frequencies (again to be expected given the driver size); 6.) Bass roll off starts around 150 Hz (quite unexpected from a 12 inch driver, and this in a cabinet!); 7.) Specified bass response is severely overstated (this driver needs a sub that could use a smaller driver!); 8.) With Qt = 0.43 this could be a good candidate for bass reflex, transmission line, TWQP, open/infinite baffle. Don't know the price (or recognize the brand) but a number of 4 - 8 inch diamter Fostex drivers that provide more extended frequency response with less beaming, but somewhat less efficient.
creator: JLM
date: 2003-12-26T12:49:30-00:00

Re: Full range speaker
type: item
description: Now that is an interesting driver. The graph shows the response in a 50cu. litre box tuned to 60Hz, but doesn't show what kind of box. With a box that boosts low end, this could be a driver that covers all the important frequencies and just needs a sub for the lowest couple of octives and a super tweeter for the highest sounds. With that kind of sensitivity, any amplifier could drive it, and it comes in both 8 ohm and 16 ohm, to get even better amp matching (on a typical tube amp with the 16 ohm setting, these speakers could really put out some efficient sound). Sitting a bit off axis should tame the high frequency peak. Of course, you can't tell what it will sound like untill you try it. ;^) Dave
creator: hurdy_gurdyman
date: 2003-12-26T17:03:17-00:00