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IMF owners thread!

I'm probably going to redraw it myself and convert it to metric dimensions as I have a genuine set of Mk II stands with my 80's to work from.
 
Yvan_donald said:
Hi, did you block the original wheel on the mk3?
Click to expand...

No I removed the castors and the wood skirt. I then glued and screwed a piece of 3/4 ply to the bottom of each speaker leaving an inch clearance all round for the tubular steel frame. I machined some round nylon rollers and cut two openings in the bottom of the frame side rails, front and rear. The rollers went up into these openings and a long bolt was passed through each one. I might have some pics somewhere of the TLS80 stands I modified.
 
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Sorry for the delay but attached pics are the TLS80 MKIs. They sound fantastic with my CJ amp/preamp, and the grills are in pristine condition. I need to clean them up and will try Howards' Restore on them this spring/summer and replace a broken speaker binding post. I'm very happy at how they sound!!
 
Always glad to see another set of IMF's surface. Sadly it always disappoints me to see B-139's with their faces defaced, it's amazing how kids always seem to poke at them.
 
Good Morning All,

Well I've kind of read through all the previous 94 pages, that's a lot to go through.

Currently have three pairs of Linn Isobarik's. The latest pair have the https://www.wilmslowaudio.co.uk/scanspeak-illuminator-d3004662000-435-p.asp tweeters and the https://www.wilmslowaudio.co.uk/illuminator-15wu-8741t00-diameter149mm-686-p.asp midrange units fitted whilst retaining the original KEF B139's (later ventilated pole type).

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Wanting to get a hold of a pair of RSPM MkVII's to compare how they sound against the modified Isobarik's. I am pretty satisfied with what I have but need to find out how the IMF's compare.

I'll need to keep monitoring various locations waiting for a pair to turn up........

Regards

Richard
 
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Hi Richard,

Best of luck sourcing a pair of Mk VII's (and I mean that sincerely) as they would be the thinnest IMF's made on the ground, alongside the last variant of the SACM's.

These seem to come up more so in Europe and no where else as the marketing landscape had certainly changed by the time these were manufactured.
 
IMF_Pioneer,

I don't expect it will be easy and TBH I don't know how much time and effort I'm willing to devote to it. The Brik's driven actively are pretty good in their own right and the pair I now have even more so, however if a chance presents itself.......... There is also the option of replacing the KEF B139's with Keltik or even IMF 128/30's or TDL 3021/ GT01 units (if any can be had at sensible prices).

Regards

Richard
 
Yvan_donald,

I'd be intrigued to know how these re-manufactured B139's compare to the late original ventilated pole types.

Regards

Richard
 
Hi Richard,

There's been plenty of talk around here regarding those new drivers being manufactured by Jerry, but sadly no one here has been brave enough to dig deep into their pockets to buy and test a set out. There are still plenty of B-139's out there in the secondhand market to be had at a sensible price. Actually B-139's have dropped in price over the past few years and thus this has certainly had an effect on the sales of the new upgraded versions. I recall that Jerry was also going to make the 128/20 drivers available, but I'm pretty sure that's fallen by the wayside with the lack of sales in the standard 139 units.

Cheers,
M.
 
Hi Richard,

They are 128/20's not 30's. Yes they are hard to obtain and yes I have a spare set sitting in sealed containers for my RSPM's or my HPCM, whichever needs them first I guess.

Cheers,
M.
 
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Hi Jim,

Yes agreed and they are much easier on the eye as well I've always thought opposed to the KEF flat faced B139. The 128/20 looks more like a speaker opposed to a Radiator which is how the KEF unit looks.
 
I just got my 128/20's back after having the tinsel wire replaced on both. Bit disappointed with the cosmetics but sound fine,rebuilt the crossover's with the Falcon kit I bought a year or two ago,new correct inductors for bass drivers,now located on the board again. Managed to lose one 100mfd cap so need to order onee then the jobs complete
 
IMF_Pioneer said:
Always glad to see another set of IMF's surface. Sadly it always disappoints me to see B-139's with their faces defaced, it's amazing how kids always seem to poke at them.
Click to expand...


I am going to cover mine with some black Automotive head liner material, similar to the material PhaseTechnology covers thier flat piston drivers with.

Looks much nicer that way.

nashou
 
When Covid-19 is ruling around outside the doors these days, it is best to be inside, chill, and listen to those beauties.

They are stored at the moment in my cellar. My current livingroom is too small for these now.

But i am giving them the love they deserves, even they are not in daily use.
Today i am stretching the legs of the MK4's.

:)


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