Interesting new fullranger from CPC (UK)

[bigwill]

http://cpc.farnell.com/jsp/endecaSearch/partDetail.jsp?SKU=LS02373&N=411


CPC Code: LS02373

Offers 94dB sensitivity, goes up to 17.5Khz and it costs £3.69. As you can see from the picture, it looks pretty cheapy. I've never seen this model on sale before, and I'm going to order a couple today. They'll probably sound terrible, but you never know. At that price it's worth finding out!

[Scottmoose]

I've got a couple of their 5 1/4" full-rangers, though it took me an age to find out what they are (thanks guys!) as I bought them in an unlabelled box from a local electronics supply shop. They're not bad at all for the low, low price -the magnet's massive. I use them for testing amplifiers etc, on the basis that if they go bang, my wallet hasn't wilted. They reside in a pair of traditional (vile design, but it doesn't matter) Voigt Pipe cabinets in the garage, made entirely of polystyrene. Sound is surprisingly decent. In fact, it's pretty good! And at that price, you can't really go wrong, can you?
Best
Scott

[Nuuk]

made entirely of polystyrene.

An expert speaker builder at last!

[carlosfm]

Originally posted by bigwill
CPC Code: LS02373

Offers 94dB sensitivity, goes up to 17.5Khz and it costs £3.69...

RMS: 8W
PMPO: 10W



Curious... PMPO is usually hundreds for 8W RMS.

[Cryo_jumper]

This looks remarkably like the driver sold under the Radio Shack label as the 40-1271c. I picked up a n-name pair of these in viking cabinets for about $8.
If they are the same, they have a QTS of about 2.01 (yes 2.01) and on anything other than open baffle they boom.
However, no real bass to speak of. They are more mid/tweets. They could sound ok though with a helper woofer (not subwoofer).

I put mine on small OB's, and they are just OK. HF extension seemed rather good, but they had no body whatsoever. (I don't think larger baffles would help much).

Tom

[bobhayes]

Wow, look at the huge magnet assembly!
Maybe the designer of the supermarket speaker system had a surplus.
"Price check on full range drivers... Isle three."
Try 'em in a sealed box, that should stop 'em flapping too much.

[Taperwood]

Originally posted by Nuuk


An expert speaker builder at last!

heh, heh....don't knock it. My Fostex Sigmas are still in foam. They sound pretty darn good too. If only I could find the time to put them in real cabinets.

Doug

[Nuuk]

heh, heh....don't knock it.

Oh, I wasn't knocking it! Here's one of mine (described here ).

[Scottmoose]

Amen. It was actually our mutual friend above who put me on to this via his most excellent website -a Russ Andrews notion of rapid energy release preventing time-smear or some such problem due to resonance build-up in the panels. Now, I can't say I'm enarmoured of all of Russ's wilder flights of fantasy, but I have to admitt that this one works well. The trad. Voigt Pipe will never be a spectacular cab. -that point cripples it (though in passing, the FE206E looks like a passable match in Martin's MathCad sheets -better than the 207E), but with these polystyrene panels, the results are more impressive than I would ever have believed until I tried it. Pity more commercial speakers don't do it, but movement requires a certain, shall we say, delicacy.
Best
Scott

[Nuuk]

Pity more commercial speakers don't do it, but movement requires a certain, shall we say, delicacy.

The only commercial design that I know of was the one using a single Jordan driver and no crossover. I would love to have heard those although I know they lacked bass!