Just won these on Ebay......

Indeed, Dave, but I've got a shed-load of the VDH stuff left over that I used to rewire the Tannoys with, so as it's there anyway, I may as well use it :)

The good thing is that the crossovers are simple, and not overly complicated, which is probably one of the reasons why the Celestions sound so good, even before they've been modified.

Once I get a couple of Clarity Cap MRs in there, and some nice Mundorf Air Core Foil Coil inductors, and pop on some WBT terminals - they're gonna rock da house :gig:

Hopefully, I'll get the work done in time for taking the Celestions to Scalford Hall! :cool:

Marco.

Quote:

---

Originally Posted by Marco

Once I get a couple of Clarity Cap MRs in there, and some nice Mundorf Air Core Foil Coil inductors, and pop on some WBT terminals - they're gonna rock da house :gig:

---

As i have mentioned on a few occasions, make sure that the inductors you buy have the same DC resistance as the original Celestion offerings or you'll mess up the bass loading due to damping factor changes ;)

The same goes for the one accross the tweeter, it's not just inductive reactance that counts :)

What's wrong with the original inductors?

I'll vouch for what Marc says regarding the inductors,I fitted some foil ones to my impulse speakers and lost all the bass.The foil ones were a different resistance to the originals and were not suitable.
Disco Dave.;)

Quote:

---

What's wrong with the original inductors?

---

Probably not much, but I suspect that they could be bettered. Component technology has moved on somewhat since the 70s - in audio, it's about the only thing that has!

I'll follow Mark's advice though (regarding DC resistance) and then pop the Mundorfs in last, so I can analyse their effect in isolation :)

Remember that when I modify gear, I go for all-out sonic maximisation. I don't do things by halves!! ;)

Marco.

Quote:

---

I'll vouch for what Marc says regarding the inductors,I fitted some foil ones to my impulse speakers and lost all the bass.The foil ones were a different resistance to the originals and were not suitable.

---

Indeed, Dave. We didn't have that problem though with my Tannoys :)

It'll be t'other Dave and you doing the necessary, anyway - a sesh to have at mine sometime in Feb, perhaps? :cool:

Marco.

Quote:

---

Originally Posted by DSJR

What's wrong with the original inductors?

---

Your having a laugh right Dave? :)

No. The Ditton 15XR's are low budget boxes with low tech drivers inside and with problems at the crossover point as designed. I doubt ANY fancy bits will cure this*, as I doubt the drivers have the bandwidth to accomplish this. Still, it'll give 'em summat to do during the winter months and it's pocket money to these people :)

* - I await to be proved wrong (again) :lol:

"Low budget boxes with low tech drivers inside", they may be, Dave, but that doesn't seem to stop them from sounding superb (on the end of a top-notch system - not the pish they would've originally been used with 40 years ago ;)), and rather better than most modern designs I've heard at many times their price............

And when I've finished upgrading the crossovers, they'll be even better - so prepare to be stunned at Scalford Hall and made to EAT your words (yet again)!! :eyebrows: :ner:

Marco.

Quote:

---

Originally Posted by DSJR

No. The Ditton 15XR's are low budget boxes with low tech drivers inside

---

They seem to hold their value well though especially on eBay.