Tim Ellison
Thu, 04 Feb 2010 21:02:31 -0800
You could use a stereo kit PA. Like one of these http://www.electronickits.com/kit/complete/complete.htm#Amplifier%20Kits%20And%20Modules
-Tim -----Original Message----- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Jim Barber Sent: Thursday, February 04, 2010 11:42 PM To: Dudley Hurry Cc: 'FLEX USERS' Subject: Re: [Flexradio] Speaker project (was the 'bose speakers') 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/ >> > _______________________________________________ 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/ _______________________________________________ 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/