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Wharfedale/Tannoy DYI - Talk me in or out of it!

CrawfishKing

Active Member
Hi guys!

I've enjoyed my audio journey thus far, but am certainly in need of a change of speakers. When me and a good friend started the journey, our first real speakers were a set of Klipsch Tangent T200's for myself (I heavily improved the cabs, dampened the horn and upgraded the crossovers) and he still has his beloved KEF 103.2 (which I just recapped - they sound amazing!)

A couple years ago I made a sideways leap into a pair of Wharfedale W70B's. The midranges are alnico, tweets and 12's ceramic. This is the model you cannot remove the grill from.

I also have a set of Tannoy C8's.

So the proposal. The Tannoys have unbelievable bottom end, too much to be perfectly honest, sweet highs (pretty reminiscent to the T33's in my buddys KEF's (both silk dome). The midrange has always lacked. Considerably. I think the 8' is just too subby to get a lot of the mids so the tweeter is left to make up for it... I'm debating on building new cabinets and making a 3 way speaker with the mids from the Wharfedales and tweets from the Tannoys. I think the crossovers should be pretty easy... both of these speakers run in full range except the tweeters which have a single cap. I've never built a cab from scratch, so I'd need to do some research there... open baffle has always intrigued me... maybe thats something to experiment with? I'm undecided on which woofers I'd go with, which I'm sure would have an impact on cab size... but first thing first... is this sinful? is it a good idea? Any suggestions? I also think the a part of the issue with the Wharfies in general is that the grill doesn't come off. It's very thick, and they're old, probably a lot of dust locked in them.
 
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OBs are super-easy and something that can definitely be experimented with. There are a few simple designs all over the net and you really can just start with a piece of wood and a fullrange speaker - ie: an 8" would give you a bit more bass and if you don't like it, its less expense. That's where I recommend you start.

I have Fostex Fe206en 8 inchers in an OB cabinet with Eminence Delta 15" doing the bass. You really need at least 15" to get decent bass with OB (unless you are really clever, not me - have speaker design software etc - not me either). Plus the next step with OB's (or any speaker really) is to go active crossover and skip the passive crossover altogether.

If you like OB then it can be revolutionary. Doing the above makes for nice natural sound plus less energy lost in coils & caps after the amplifier output.
 
You can test out OBs cheaply by using the rigid foam insulation sheets from Home Depot. Try the JE Labs configuration first (at least that is what I did).
 
Hijacking for a question on topic...

Is there a calculation for the baffle size and driver placement? There must be some reasoning behind the sizes.
 
JE Labs baffle works great, you may like it a lot more than vintage enclosures. I built a pair from particle board in an afternoon for about $20 and was very pleased with the sound.

One thing you may consider though - they were not well received by the wife! She hated them, right from the start. They are huge, and not very pretty
 
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