Jim Barber
Thu, 04 Feb 2010 20:42:54 -0800
Hi Dudley,The time... The 'audioguy' always has the time for speaker projects, but I'll concede that you may not. :-)
The size - yes, even the "small" version may be bigger than a pair of micro PC speakers. Once cab I was tinkering with tonight is 6x6x6" internal volume and made from 1/2" MDF. They can get bigger and smaller.
Well shielded from RF - That will be attended to in the separate amplifier section. Both for goes-in and goes-out, since the amp module I'm working with is Class D and can generate some hash unless put in a metal box and bypassed/choked. If someone comes up with an inexpensive linear amp module, kit or design that meets spec we can look at that too. Class D is nice because it can be tucked away in a diecast box without heat issues.
Sound quality vs size - not sure what you mean there. The point of doing this is to build a first rate speaker. Unless you're talking trade-off, which is a matter of preference. You may prefer small for convenience. I'm a believer that where speakers are concerned, QRO is the way to go, although a 7" cube isn't what I'd call all THAT large.
Price - It would be tough to match the $69 you mention, yes. The smaller design may do it, we'll certainly try.
73, Jim, N7CXI (going where angels fear to tread) Dudley Hurry wrote:
Jim,There are just a few issues with the speaker project as far as I am concerned, for the Flex. .First is the time. Second the size Third being well shielded from RF.Fourth, guess sound quality verses size. I have been extremely happy with my Boses, mainly for the sound/size, they will fit in a brief case, sound very good for the size, even in CW, and were only $69.. And they are well shielded, and self powered.. Very hard to beat.. Now for my stereo system, I just might do something like that, a good set , even in a kit will be in the $350 range.Good luck in the project 73, Dudley WA5QPZ Jim Barber wrote:Tim, W4TME made some excellent suggestions regarding the speaker project.I'll work up a high quality, medium-size design as a "case study", then provide notes, design details and construction info for perhaps two alternatives - one larger and one smaller, for example. That way those who really want to dig into the details can, while those that just want to build a great-sounding speaker for their great-sounding radio can do that too.Suitable amplifiers will be handled as a separate section, since in some cases it won't be required.73 and more later, --jim Jim Barber, N7CXI _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
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