IMF owners thread!

[Sansui77]

Anyone have or know where i can get a driver to suit a set if IMF Super Compact II? Cheers

 

[Yvan_donald]

What is the number written on the speaker? 8/30? you need one? take a foto Yvan

 

[Sansui77]

 

[Yvan_donald]

8/22 not shure if I have one,I check for you, but you know it's the shipping, became expensive these day.I am not home,presently, Yvan

 

[Sansui77]

See if you have one and let me know? Cheers

 

[Yvan_donald]

Hi,sorry I have the 8/28 (TDL),8/30.8/30r IMF they are mostly for als 30-40-tls 50.But you're it's a smaller magnet,less power. Yvan.

 

[Sansui77]

Thats ok. I'll keep searching.

 

[Yvan_donald]

Hi,yesterday, I pick up the active carbon pads (10"X30"X1/2" thick)and install very late, first the tube is 6"X 14" not 18',I removed the 4 pieces of fiberglass 2"X2"X16" insulation,install the active carbon 2 pcs. 5 7/8" inside diam. give approx. 18",so a pc. of 10"X14" and a pc. of 8"X14",at the end of tube install a pc. of approx. 5 3/4" round diam. Split the fiberglass in half so pc. of approx. 1"X2"X16" and install 5 pcs. of these inside all arround.First listening the sound is great without degrading it,what I can say right now,seems the sound is detail, very natural,really like it,but need to extend my listening with all the musics, to really see the improvment specially at high volume,but this morming I crank up the volume and it was very good.This active carbon seems to let the mids

 

[SimplySound]

Hi,yesterday, I pick up the active carbon pads....

Needless to say... :worthless

 

[Yvan_donald]

Hi Simplysound,I will put photos of product and installation, but is not with photos you can heard the sound improvment, Yvan

 

[Yvan_donald]

Active carbon installation in Mid tube

Hi, I have take some fotos of midrange before
1riginal way Mid tube is insulate
2:Mid tube with one piece of strip fiberglass
3:Mid tube empty
4:four strips originaly in mid tube
5ne package active carbon pad

 

[Yvan_donald]

Active carbon in mid tube Prof.Mk III improved

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fotos of active carbon and instalation
1:active carbon pad 10"X 30"X 1/2"
2:show closer look of small active carbon piece
3iece of active carbon in tube 10" X 14" (tube is 14" long)
4:second piece of active carbon 8" X 14" (tube 5 7/8" diam. need total 18")
5riginal fiberglass split in two (left),original fiberglass full size (right)

for the end circle inside need a piece of 5" diam.

 

[Yvan_donald]

active carbon pad with fiberglass on top mid tube prof.Mk III

installation on top of active carbon fiber 5 pieces of fiberglass split in half to fill all arround the tube.Because of the thickness of active carbon I decide to reduce the thickness of fiberglass but add one more piece to fill the tube all arround not leaving uncover spot like the original.Yvan

 

[Yvan_donald]

Hi, just to say the original way the fiberglass strips in the beginning was more like a X figure instead of + figure,hope you understand,Yvan.

 

[SimplySound]

Wow, this is interesting Yvan! The midtube on my TLS50MkII's has the foam rolled up inside and not laid in like what you have. I wonder what difference the tapering of your installation makes? :scratch2:

 

[JimPA]

Yvan should try foam instead of fiberglass in the tube to compare if he hears a difference in the sound.

 

[Yvan_donald]

hi Jim, the active carbon act like if the tube was bigger,size became bigger,so the pressure sound inside doesn't bounce,it's absorb the frequency without muffle it.I find the sound more natural even at high volume. You know they make panel of this stuff to put in front of window (panel's 3 inches thick to cover patio window door on a track).It suppose to be really great.I kept the fiberglass because my entire speaker transmission line is made with this stuff. Yvan

 

[Yvan_donald]

Hi,looking at Ebay two pairs of IMF,TLS 80 MK II (not bad condition),Prof.MK III the seller think it's a pair of TLS 80 but it is a MK III,clean but with one have the wrong woofer. Yvan

 

[Yvan_donald]

Hi,I always ask myself why the Tls 50 didn't have a mid tube of 5" diam. instead of 4" who is really to narrow for the midrange ,even the MK II have the same.The prof. have a 6" tube for a 5" midrange,it's a more solid installation,it fit in a groove behind the baffle. Like we have seen many time the tube of TLS 50 became loose,very bad installation. Yvan

 

[Yvan_donald]

SimplySound,I install the active carbon to insulate more the tube.Try to stop more of the Mid frequency to mix with the T-line or woofer frequency to go in mid tube,that is the main reason I did that.Outside of tube,To follow I like to even go further by putting a layer of roof shingle or thin sheet of lead 1/16"? covering with a cork sheet maybe and veneer.try to keep the tube to a minimum size for not changing the T-line.Yvan