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IMF owners thread!

Hi,yesterday I have order 6 Mundorf supreme evo 2.2 uf caps,need 10 but in couple of weeks will order the other 4. (regular price each / $135.00 + 15% CDN). The HI-Fi store give me 6 for $760.00 tax in
 
Hi the new Supreme EVO Silver-Gold in Oil 800 v., you can not say I'm going cheap on my Prof. and maybe a bit crazy,but I know the result will be there and will put a big smile on my face.
 
Yes big improvement with new caps such lovely speakers,taken me years to find the speakers ive all ways wanted and now have them
 
hi, very neutral speakers,I remember when I have my first Tls 50 mkI,at the time I have been listening Celestion Ditton 44, after 5 min. I knew right away the IMF was great and sound so natural, no coloration.I kept until my friend sell me the Prof.Mk III improved,sell the Tls 50 to my brother but his girlfriend at the time kept it after separation,I was mad at my brother to let it go..
 
Replacement capacitors arrived for TLS 50 and TLS 80 this morning
Click to expand...

Well made a start on the TLS50 first and have run into two slight problems. Firstly the replacement capacitor values are 100v 2%, which are different to the originals and there appears to be a replacement fitted. Has anyone a set of drawings for the TLS 50 and TLS80 crossovers?
IMG_0241[2].JPG IMG_0242[1].JPG IMG_0243[1].JPG IMG_0244[1].JPG
 
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You can up in voltage and it won't harm anything . Its the uf values that should remain the same.

Nashou
 
Its the uf values that should remain the same.
Click to expand...
Understood, the uf values are somewhat different. Waiting on a response from Jerry. He must have his reasoning. Possibly as these are MK1, he has upgraded?
 
Hi,Redkiteart and Mart your X-overs seems almost untouch except for one cap.My MK I seems to have a later model of X-over,I try to take some pictures,mine have an other small board with.
 
Mine were still glued to the felt so I suspect never touched. There seems to be a number of different configurations, even with the same model. That could be down to the fact that IMF, like a lot of British audio companies from that era, were a 'cottage industry' and used whatever components they had to hand at the time.
 
There seems to be a number of different configurations, even with the same model
Click to expand...
This certainly appears to be the case. Probably that is the reason for receiving 4uf and 6uf, 60uf and 100uf as possibilities fitted to various crossovers. I am curious as to the difference 4uf and 6uf will make to the overall sound?
It is noted that your crossover contains an additional capacitor (top right, adjacent the 100uf). What value is the yellow (mid bottom) capacitor?

To stay safe I have as per photos exchanged like for like, this took just over three hours, in between coffee breaks. The work was conducted in-situ, which was a little fiddly but manageable, simply drop them on their back and open them up. Please note the special tool for removal of the crossover. Cleaning the residue foam from the rear of the board is messy, be prepared, cover up.
Left side was completed and tested, there is a very noticeable difference in sound clarity, separation. The various speakers are receiving the correct signals. Excellent, well worth the minor cost of the caps.
Right side tackled next, the work was completed much quicker. Big bummer on this one, one tweeter not functioning. Nonetheless sound quality improved across the range that could be heard.

A pair of tweeters ordered from Falcon Acoustics http://www.falconacoustics.co.uk/drive-units-1/imf/audax-hd12x8d25-12x8-tweeter.html. Also ordered a pair of mid range Monacor MSH-115. IMF 4/200 Midrange replacement http://www.falconacoustics.co.uk/drive-units-1/imf/monacor-msh-115-imf-midrange.html. As soon as these arrive, they will be fitted and an assessment provided.

This is a first speaker re-cap for myself, after initial head scratching, I found this relatively easy, which instils confidence for the TLS 80's, that will be recapped next weekend. Many thanks for your comments.

IMG_0245[1].JPG IMG_0246[1].JPG IMG_0247[1].JPG IMG_0248[1].JPG IMG_0249[1].JPG IMG_0250[1].JPG IMG_0251[1].JPG
 
redkiteart said:
This certainly appears to be the case. Probably that is the reason for receiving 4uf and 6uf, 60uf and 100uf as possibilities fitted to various crossovers. I am curious as to the difference 4uf and 6uf will make to the overall sound?
It is noted that your crossover contains an additional capacitor (top right, adjacent the 100uf). What value is the yellow (mid bottom) capacitor?

To stay safe I have as per photos exchanged like for like, this took just over three hours, in between coffee breaks. The work was conducted in-situ, which was a little fiddly but manageable, simply drop them on their back and open them up. Please note the special tool for removal of the crossover. Cleaning the residue foam from the rear of the board is messy, be prepared, cover up.
Left side was completed and tested, there is a very noticeable difference in sound clarity, separation. The various speakers are receiving the correct signals. Excellent, well worth the minor cost of the caps.
Right side tackled next, the work was completed much quicker. Big bummer on this one, one tweeter not functioning. Nonetheless sound quality improved across the range that could be heard.

A pair of tweeters ordered from Falcon Acoustics http://www.falconacoustics.co.uk/drive-units-1/imf/audax-hd12x8d25-12x8-tweeter.html. Also ordered a pair of mid range Monacor MSH-115. IMF 4/200 Midrange replacement http://www.falconacoustics.co.uk/drive-units-1/imf/monacor-msh-115-imf-midrange.html. As soon as these arrive, they will be fitted and an assessment provided.

This is a first speaker re-cap for myself, after initial head scratching, I found this relatively easy, which instils confidence for the TLS 80's, that will be recapped next weekend. Many thanks for your comments.

View attachment 685611 View attachment 685612 View attachment 685613 View attachment 685614 View attachment 685615 View attachment 685616 View attachment 685617
Click to expand...
Just a thought,but what are you doing with your old midrange units......:)
 
Hi,Mart and Redkiteart both your Tls 50 Mk I crossover boards are the same size like my prof.IMF MK III but the under lay out circuit is from the not improved Prof.MkIII model,on my Tls 50 it have a more smaller circuit board but with the same 4 inductors with an extra small board with 1 extra inductor on it,but differents capacitors. yours because of oversize board they have cut the beige yellow foam section under your crossover. I do have to put pictures of mine to show both of you the difference,I"m a bit surprise,IMF use the board of the big model but it"s probably extra left over from last production of Prof.MK III? I seriously believe mine are from the last batch of Tls Mk I IMF have built.
 
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