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new cd player
On Tue, 6 Jan 2004 08:16:54 +0000 (UTC), (Stewart
Pinkerton) wrote: Apropos of which, thanks for recommending the Tempest. I've had a discourse with the technical chaps at Adire, and between us we came to the conclusion that one of those in my big brick cupboard, implemented as infinite baffle (which it approaches pretty closely) will give me, with room gain, a flat response down to about 12Hz. Of course with a total lack of any kind of tuned ports, the phase response and hence perceived speed will be just great. I'm currently building the mounting panel that will replace the door. Reports will follow... Apropos of that, download the Tempest white paper to get full T/S specs, and check out what happens when you use the 'shorted coil' option. I make it flat to 20Hz *anechoic*, with f10 at 10-11 Hz, and a 250 watt plate amp is more than adequate to 'Xmax out' up to 30Hz driving two of them in a loft-mounted manifold. I've got the white paper, but most of the content seems to be aimed at minimally-sized enclosures - which I suppose is reasonable for most people. What struck me about this speaker, though, was the huge Vas figure, which if it is true makes it a very suitable candidate for a big IB. I worry some about room gain though. It does rather depend on having all the doors and windows tightly closed. Having said that, I would rather have slightly light but well extended bass than all the slap, boom and thud you hear from so many subs. d _____________________________ http://www.pearce.uk.com |
new cd player
On Tue, 6 Jan 2004 08:16:54 +0000 (UTC), (Stewart
Pinkerton) wrote: Apropos of which, thanks for recommending the Tempest. I've had a discourse with the technical chaps at Adire, and between us we came to the conclusion that one of those in my big brick cupboard, implemented as infinite baffle (which it approaches pretty closely) will give me, with room gain, a flat response down to about 12Hz. Of course with a total lack of any kind of tuned ports, the phase response and hence perceived speed will be just great. I'm currently building the mounting panel that will replace the door. Reports will follow... Apropos of that, download the Tempest white paper to get full T/S specs, and check out what happens when you use the 'shorted coil' option. I make it flat to 20Hz *anechoic*, with f10 at 10-11 Hz, and a 250 watt plate amp is more than adequate to 'Xmax out' up to 30Hz driving two of them in a loft-mounted manifold. I've got the white paper, but most of the content seems to be aimed at minimally-sized enclosures - which I suppose is reasonable for most people. What struck me about this speaker, though, was the huge Vas figure, which if it is true makes it a very suitable candidate for a big IB. I worry some about room gain though. It does rather depend on having all the doors and windows tightly closed. Having said that, I would rather have slightly light but well extended bass than all the slap, boom and thud you hear from so many subs. d _____________________________ http://www.pearce.uk.com |
new cd player
In article , Stewart Pinkerton
wrote: Properly done, they most certainly do not put out 'mush', but I'll agree that 90% of the subs on the market are garbage. The interesting thing is that this is the one area in audio where you really can do a better job with DIY than you can buy at any price! Depends who is doing the 'DIY'. My mechanical abilities are such that every prototype amp. etc, I make tends to make a 'swish' noise when you tllt the box and the components slide about. :-) I suspect any sub I made would rattle like a box of loose bolts. :-) Slainte, Jim -- Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm Audio Misc http://www.st-and.demon.co.uk/AudioMisc/index.html Armstrong Audio http://www.st-and.demon.co.uk/Audio/armstrong.html Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html |
new cd player
In article , Stewart Pinkerton
wrote: Properly done, they most certainly do not put out 'mush', but I'll agree that 90% of the subs on the market are garbage. The interesting thing is that this is the one area in audio where you really can do a better job with DIY than you can buy at any price! Depends who is doing the 'DIY'. My mechanical abilities are such that every prototype amp. etc, I make tends to make a 'swish' noise when you tllt the box and the components slide about. :-) I suspect any sub I made would rattle like a box of loose bolts. :-) Slainte, Jim -- Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm Audio Misc http://www.st-and.demon.co.uk/AudioMisc/index.html Armstrong Audio http://www.st-and.demon.co.uk/Audio/armstrong.html Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html |
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