MCM has some 11$ drivers that don't look too bad.
http://www.mcminone.com/product.asp?catalog%5Fname=MCMProducts&product%5Fid=55%2D1854
http://www.mcminone.com/product.asp?catalog%5Fname=MCMProducts&product%5Fid=55%2D1595
http://www.mcminone.com/product.asp?catalog%5Fname=MCMProducts&product%5Fid=51%2D075
Are any of these worth the cost of shipping?
http://www.mcminone.com/product.asp?catalog%5Fname=MCMProducts&product%5Fid=55%2D1854
http://www.mcminone.com/product.asp?catalog%5Fname=MCMProducts&product%5Fid=55%2D1595
http://www.mcminone.com/product.asp?catalog%5Fname=MCMProducts&product%5Fid=51%2D075
Are any of these worth the cost of shipping?
cheapie BIB!
any suggestions on the size/demension?, may try this for kicks... with this driver.
http://www.mcminone.com/product.asp?catalog_name=MCMProducts&product_id=51-075
gychang
Scottmoose said:
any suggestions on the size/demension?, may try this for kicks... with this driver.
http://www.mcminone.com/product.asp?catalog_name=MCMProducts&product_id=51-075
gychang
Having played with and modified a number of cheap drivers with very good results I'd say these drivers are well worth a try, I'd forget the first one, sensitivity is too low and it won't mod real well with that cone material. The other two look good, I think I'd go for the 5 inch but heck try both.
I wonder about the efficeincy rating for the 4.5 incher, it may well reach that 96db at some point in the range but is likely to be pretty peaky, however it would likely work very well in a double bass enclosure, or maybe a frugel horn even.
For $11.00 though you really can't lose, you'd find a use for them somewhere.
I'd say intergrating them with a car super tweeter crossed over at about 10k would work real well and most likely phase plugs would reap big results.
I wonder about the efficeincy rating for the 4.5 incher, it may well reach that 96db at some point in the range but is likely to be pretty peaky, however it would likely work very well in a double bass enclosure, or maybe a frugel horn even.
For $11.00 though you really can't lose, you'd find a use for them somewhere.
I'd say intergrating them with a car super tweeter crossed over at about 10k would work real well and most likely phase plugs would reap big results.
Spasticteapot said:
I finished my project, thanks for your initial suggestion on the speaker, I built one with 4 1/2", Scottmoose gave me dimensions. You can see the speakers here:
http://gychang.smugmug.com/gallery/2055074
read about it here:
http://www.diyaudio.com/forums/showthread.php?threadid=89831&highlight=
Result is outstanding to say the least, sound is devine to my ear. thanks for putting up the initial suggestion.
gychang
what enclosure without going overboard in bulk would be good for the 5" MCM paper cone?
with damar tone and image width was pretty good with opera with the paper MCM in a head reflex but power handling not quite adequate on bowed bass
head - no stuffing at all
http://img140.imageshack.us/img140/1333/smooth1jpgbm2.jpg
with damar tone and image width was pretty good with opera with the paper MCM in a head reflex but power handling not quite adequate on bowed bass
head - no stuffing at all
http://img140.imageshack.us/img140/1333/smooth1jpgbm2.jpg
how about higher cabinet?
Scottmoose, I have yet another pair of the el cheapo speakers coming (now they are $9/each) and considering what affect will the higher cabinet have? perhaps taller than my height let's say 70"?
Can the foot print be smaller without sacrifacing the sound?
I have been asked to build a pair for my wife's friend. In Southern California the houses tend to have high ceilings.
gychang
Scottmoose said:
Scottmoose, I have yet another pair of the el cheapo speakers coming (now they are $9/each) and considering what affect will the higher cabinet have? perhaps taller than my height let's say 70"?
Can the foot print be smaller without sacrifacing the sound?
I have been asked to build a pair for my wife's friend. In Southern California the houses tend to have high ceilings.
gychang
Greets!
Ooh, good price for this decades old model! The terminus area (Sm) is a function of the driver's mass corner, so it's small for low Qt drivers and large for high Qt drivers, so if you make it <optimum, then the LF/mid-bass may sound 'thin', but of more importance is the loss of acoustic gain to off-set the driver's extreme lack of acoustic output due to a small radiator combined with little usable excursion.
Bottom line, maintain 'Sm' if it works and just lengthen the pipe as required as all it does is lower Fp and the 3rd harmonic dip, which can be a plus if it gets down low enough to be 'lost' in the room's modes/our reduced hearing acuity.
GM
Ooh, good price for this decades old model! The terminus area (Sm) is a function of the driver's mass corner, so it's small for low Qt drivers and large for high Qt drivers, so if you make it <optimum, then the LF/mid-bass may sound 'thin', but of more importance is the loss of acoustic gain to off-set the driver's extreme lack of acoustic output due to a small radiator combined with little usable excursion.
Bottom line, maintain 'Sm' if it works and just lengthen the pipe as required as all it does is lower Fp and the 3rd harmonic dip, which can be a plus if it gets down low enough to be 'lost' in the room's modes/our reduced hearing acuity.
GM
FYI
http://www.mcminone.com/product.asp?catalog_name=MCMProducts&product_id=55-1870
This one is highly regarded by the Bottleheads.
http://www.mcminone.com/product.asp?catalog_name=MCMProducts&product_id=55-1870
This one is highly regarded by the Bottleheads.
They were part of the retired Straight-8s kit from Bottlehead.
Info: http://www.bottlehead.com/straight 8/straight_8.htm
Info: http://www.bottlehead.com/straight 8/straight_8.htm
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