Wharfedale question

crick · 30th June 2007, 05:33 PM

I just replaced the surrounds on my new Super 12/FS/AL FRD's and man,3 watts blows me out of the room.These must be wicked sensitive.Wish I knew how much.
Anyway,my question is has anyone built a proper cabinet for these?I have not been able to find any info on them.Maybe a Metronome or BIB would work for them?I know absolutly nothing of speaker design.

Thanks!
Doug

pdan · 30th June 2007, 08:09 PM

Doug,

According to Wharfedale's catalogue section from 1960; the Super 12/FS/AL was described as
having "extremely high sesitivity and and excellent damping. Especially recommended for use in a 9 cu.ft. sand-filled or brick enclosure..." My guess is the sensitivity is in the high 90's.

Tech info: 12/15 omhs.
Flux density 17,000 gauss
1 3/4" dia centre pole
Aluminium voice coil
Max. input 15 watts. 30 watts peak
Frequency range 30-14,000

I've heard a vintage 10" the W10/FSB and the sound was superb.

As to a suitable speaker design I think I'll pass over to more able posters.

Cilla

Geoff H · 1st July 2007, 01:47 PM

Yep, sensitive they are. My Super 10RSDDs with shortened VCs do about 103 dB/W/M. IIRC about 96 db /w with the original 16 ohm coils.

Best results will be in 3 or 4 cub ft aperiodic cabs. I have dimensions for the large sand filled if you want to go that big.

Good luck finding a tweeter to keep up with them. I don't think they need back loaded horn to augment the bass.

Geoff.

crick · 1st July 2007, 03:40 PM

Thanks for the info guys.I'm definitley interested in those plans.They are currently in RJ enclosures and measure 24"wide,21"tall and 10"deep.They are vented in a way I've never seen before.The drivers are mountd on an inner baffle set back from the front with about 1" blocks so it is vented through the speaker opening.The opening is smaller than the drivers and shaped something like a back to back rain drop.I would think the reflections back at the drivers could do some harm but they sound very good anyway.
As far as adding a tweeter,I could happily live without.Ive had tinnitus for a few years now and high frequencys kind of bother me.

Geoff H · 2nd July 2007, 01:35 PM

Hi Doug, I'll have to prepare some gifs for the designs. Hopefully it won't be too long. Work's pretty full on at present.

Your description of the current enclosures sound interesting. Can you post pictures. They sound like a hybrid of the original Helmoltz resonator, and a Carlson.

Geoff.

crick · 2nd July 2007, 08:30 PM

Sure Geoff,
I'll snap some pictures and get them on.Don't worry about the gifs.I'm in no rush.I'm a weekendend warrior anyway.

Doug

crick · 2nd July 2007, 09:48 PM

I hope these come through

crick · 2nd July 2007, 09:49 PM

sound absourbment on the back panel ,one side and bottom only

crick · 2nd July 2007, 09:53 PM

Cabinet dimentions are 24" wide,21" tall and 10" deep

crick · 4th July 2007, 11:18 PM

Anybody seen cabinets like these before?

30th June 2007, 05:33 PM	#1
crick diyAudio Member Join Date: Jun 2007	Wharfedale question I just replaced the surrounds on my new Super 12/FS/AL FRD's and man,3 watts blows me out of the room.These must be wicked sensitive.Wish I knew how much. Anyway,my question is has anyone built a proper cabinet for these?I have not been able to find any info on them.Maybe a Metronome or BIB would work for them?I know absolutly nothing of speaker design. Thanks! Doug

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30th June 2007, 08:09 PM	#2
pdan diyAudio Member Join Date: Jun 2007	Doug, According to Wharfedale's catalogue section from 1960; the Super 12/FS/AL was described as having "extremely high sesitivity and and excellent damping. Especially recommended for use in a 9 cu.ft. sand-filled or brick enclosure..." My guess is the sensitivity is in the high 90's. Tech info: 12/15 omhs. Flux density 17,000 gauss 1 3/4" dia centre pole Aluminium voice coil Max. input 15 watts. 30 watts peak Frequency range 30-14,000 I've heard a vintage 10" the W10/FSB and the sound was superb. As to a suitable speaker design I think I'll pass over to more able posters. Cilla

1st July 2007, 01:47 PM	#3
Geoff H diyAudio Member Join Date: Oct 2006	Yep, sensitive they are. My Super 10RSDDs with shortened VCs do about 103 dB/W/M. IIRC about 96 db /w with the original 16 ohm coils. Best results will be in 3 or 4 cub ft aperiodic cabs. I have dimensions for the large sand filled if you want to go that big. Good luck finding a tweeter to keep up with them. I don't think they need back loaded horn to augment the bass. Geoff.

1st July 2007, 03:40 PM	#4
crick diyAudio Member Join Date: Jun 2007	Thanks for the info guys.I'm definitley interested in those plans.They are currently in RJ enclosures and measure 24"wide,21"tall and 10"deep.They are vented in a way I've never seen before.The drivers are mountd on an inner baffle set back from the front with about 1" blocks so it is vented through the speaker opening.The opening is smaller than the drivers and shaped something like a back to back rain drop.I would think the reflections back at the drivers could do some harm but they sound very good anyway. As far as adding a tweeter,I could happily live without.Ive had tinnitus for a few years now and high frequencys kind of bother me.

2nd July 2007, 01:35 PM	#5
Geoff H diyAudio Member Join Date: Oct 2006	Hi Doug, I'll have to prepare some gifs for the designs. Hopefully it won't be too long. Work's pretty full on at present. Your description of the current enclosures sound interesting. Can you post pictures. They sound like a hybrid of the original Helmoltz resonator, and a Carlson. Geoff.

2nd July 2007, 08:30 PM	#6
crick diyAudio Member Join Date: Jun 2007	Sure Geoff, I'll snap some pictures and get them on.Don't worry about the gifs.I'm in no rush.I'm a weekendend warrior anyway. Doug

4th July 2007, 11:18 PM	#10
crick diyAudio Member Join Date: Jun 2007	Anybody seen cabinets like these before?

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