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Rogers Cadet MK3 using the Power Amp with a different Pre amp
Rogers Cadet MK3 using the Power Amp with a different Pre amp
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Old 22nd October 2019, 09:52 PM   #11
Farmerjake is offline Farmerjake
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Join Date: Dec 2016
Had a quick look around for some drivers & found a pair of the rs8dd around 45mins from my house. Which I think are the 8” versions. Do you think these would perform well? they’re currently in some huge cabinets that are a bit tired so could have a go at building some new enclosures if I can find some suitable plans. My living room is pretty small anyway so they never go up too loud.
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Old 22nd October 2019, 10:26 PM   #12
Galu is offline Galu  Scotland
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I assume we are talking Wharfedale Super 8/RS/DD (see attachments).

These would be the basis of a fun build.

They are very efficient (the magnets are the same strength as those on my RS/12/DDs) and work well in a 1cu ft (28 litre) enclosure.

I can supply the original Wharfedale cabinet plans should you decide to go ahead with the purchase.

Out of interest, what is the asking price?
Attached Images
File Type: jpg Super 8.jpg (23.5 KB, 74 views)
File Type: gif Super 8RSDD.gif (212.9 KB, 72 views)
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Old 22nd October 2019, 11:09 PM   #13
Farmerjake is offline Farmerjake
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Yes, they’re the above. They’re asking 145 or offers & say they’re in full working order. They have 2 different cabinet designs. The pic below is the larger.



973CC582-593E-4814-B84B-830F643D849E.jpg

C208F795-9821-40BB-A167-767BBDC446DB.jpg
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Old 22nd October 2019, 11:13 PM   #14
Galu is offline Galu  Scotland
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Here are the Wharfedale cabinet plans: https://www.diyaudio.com/forums/atta...-dd-ccs-p3-pdf

Details of distributed port and reflex loading versions are given.

It is highly likely that the current enclosure for the 8" Super follows one of those versions.

P.S. Was composing this post while yours came in!
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Old 22nd October 2019, 11:30 PM   #15
Galu is offline Galu  Scotland
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This pdf of a Wharfedale catalogue may be of interest. http://www.ajaudio.co.uk/Whafedale%20speakers.pdf
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Old 22nd October 2019, 11:42 PM   #16
Galu is offline Galu  Scotland
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Quote:
Originally Posted by Farmerjake View Post
They’re asking 145
The price of the Super 8 was £7 way back in 1962 - that's equivalent to £147 now!
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Old 23rd October 2019, 07:57 AM   #17
Farmerjake is offline Farmerjake
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Amazing!! Thanks so much, yes the other cabinet looks like it follows that plan but looks like it uses chipboard (See attached)




EFE0958F-7869-4F65-BE09-0380278FA779.jpg

40B91FC0-A265-4123-B167-97E1238E8D06.jpg
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Old 23rd October 2019, 11:12 AM   #18
Galu is offline Galu  Scotland
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Will you be able to listen to these speakers before purchase?

Since you are interested only in the drivers, I suggest that they are removed from the cabinets prior to purchase so that you can inspect the cones from the front.

The tweeter cone has foam damping around its periphery which may have perished.

The foam can be replaced so it's not a deal breaker, but it may be used as a bargaining chip.
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Old 23rd October 2019, 04:44 PM   #19
Galu is offline Galu  Scotland
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This site gives the sensitivity of the Super 8 as a whopping 93dB!

Wharfedale Super 8 RS DD Fullrange Loudspeaker Measurements Data and Information Full Range

The author has measured the Theile/Small parameters which could be used to design a reflex enclosure of a size more suited to your purpose.

Fs: 69 Hz
Re: 9 Ω
Qms: 4.52
Qes: 0.80
Qts: 0.68
Vas: 21.3 ltr
Le: 0.34 mH

P.S. In his conclusion, the author suggests a 'TWQT' enclosure. This acronym stands for 'Tapered Quarter Wave Tube'.

HiFi Loudspeaker Design
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Old 23rd October 2019, 05:05 PM   #20
Galu is offline Galu  Scotland
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Quote:
Originally Posted by Galu View Post
The author has measured the Theile/Small parameters which could be used to design a reflex enclosure of a size more suited to your purpose.
I'm afraid that a smaller enclosure than the one recommended by Wharfedale seems unattainable according to this vented box calculator!

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