Speaker mods and tweaking - anyone fancy a challenge ?

[zebbo]

There was a product that was all the rage a while back where you ripped all the stuffing out of your speakers and stuck these sculptured rubber tiles to the inside. Can't remember the name, was it Deflex?

[Dr Bunsen Honeydew]

That defeats the object, why replace one damping medium with another. It has to be remembered that removing wadding is only the first move in the Doc Mod process, each one has its own benefit and they all work in unison to the same musical aims. #2 steel plate, #3 remove crossover and just protect tweeter with a capacitor # 4 dope the bass driver cone to replace the electronic crossover filter with a mechanical filter. Now tell me Jimmy Hughes wrote about all that.

[Daniel Quinn]

Jimmy Hughes did suggest in 1987[ from memory] , he did not however attempt to explain it and offered no causal explanation . Audiophile then did an article on it and made no firm conclusions and put out a whole of measurements and graphs ,in the end they concluded manufacturer knows best .

I have both those copies of the relevant magazines .

[savvypaul]

I removed the wadding from 2 speakers - some tatty Mission 70mk2s and my newish Usher s-520. I was going to have the Missions modded by Russ Andrews to replace the crossover with a single capacitor (something they were promoting at the time, and still are, I think) but the charge for this was around £300 plus carriage (typical RA rip-off margins) so I never bothered. On both occasions I realised how nasty the stuff they were filled with 'sounded'. It wasn't a cure-all, though...

[antonio66]

I don't think the doc has ever promoted his mods as a cure all. For that you need the Cubes.

[savvypaul]

I don't think the doc has ever promoted his mods as a cure all. For that you need the Cubes.

I have them

And that was my point, also

[hughandella]

http://i1316.photobucket.com/albums/t61 ... jdlxau.jpg
http://i1316.photobucket.com/albums/t61 ... zzkllp.jpg
http://i1316.photobucket.com/albums/t61 ... fciwqa.jpg
http://i1316.photobucket.com/albums/t61 ... gfa9ov.jpg

One speaker done (!) .... it looks like they already have some material (heavy) attached to the walls of the speakers ( would this mean I wouldn;t have to go down the steel plate route if I were to attempt full 'doc mods' ?
Any views on the crossover and ease of upgrading to capacitor only ? ..... I am out of my depth even at this level !
tks

[hughandella]

[Dr Bunsen Honeydew]

One speaker done (!) .... it looks like they already have some material (heavy) attached to the walls of the speakers ( would this mean I wouldn;t have to go down the steel plate route if I were to attempt full 'doc mods' ?
tks

That is panel damping as used in cars, it is the opposite to steel plate, it needs to be removed. But leave in just to hear what removing wadding has done, it can be removed later when you are sure you are going ahead with the full mod.

[Dr Bunsen Honeydew]

Any views on the crossover and ease of upgrading to capacitor only ? ..... I am out of my depth even at this level !
tks

One thing at a time get the cabinets done first.