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IMF owners thread!

John,

My stands appear to be original and factory by everything the previous owners knew about their brother/uncle's purchase of them. That they are wood probably had to do with having to add more or less weight to shipments from England.

They are 5.75 inches / 140 mm tall. I think there are pictures of them in my thread or this thread when I introduced them to you all.

Bart

Thank you and much appreciated. I didn't want to beat the topic to death I just didn't want to blow a few hundred on custom stands and get something that didn't do the trick. I'll look back through the thread I don't want to force any repeats. I just wanted to get some opinions more educated than mine in the IMF experience on what to get.
 
Thank you and much appreciated. I didn't want to beat the topic to death I just didn't want to blow a few hundred on custom stands and get something that didn't do the trick. I'll look back through the thread I don't want to force any repeats. I just wanted to get some opinions more educated than mine in the IMF experience on what to get.

Check posts 200-204 for info and stand pics. I think the general design executed in wood or metal should work well with the bottom base design of the IMF floorstanders. Many British makes like the Spendor BC1 and Rogers Studio 1 use a similar "trolley" design with wheels for movement but they are smaller midsize 2 cu ft speakers.
 
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I had these stands made for some Heathkit speakers for about $100, stole the idea from my fathers IMF Studio Monitors :D They have nuts on the underside for spikes

I also added a before and after picture of my recapped Super Compact crossovers which I just finished.
 

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I had these stands made for some Heathkit speakers for about $100, stole the idea from my fathers IMF Studio Monitors :D They have nuts on the underside for spikes

I also added a before and after picture of my recapped Super Compact crossovers which I just finished.

Did you order the kit from Falcon?


These super compacts?
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Finished the IMF Professional Recap a few hours ago. I just have to say...whoa...tremendous tremendous difference. The highs are no longer reticent, the mids are cleaner and are a bit more forward. Hopefully I get some quality time to just sit down and listen. These things sound tremendous now...they sounded okay before but some of the heat/smear in the mids and the reticent highs kept them from being 'great'. They are great now...crisp highs. One cap was missing from my kit, a mylar 1.5uf cap so I just left the original in since I'm sure it was non-degrading. I left Falcon know...I was going to compare my IMF's to my KEF 105/2's over the weekend post recap as well but Falcon shipped me the wrong version caps there as well. Oh well, at least I got to get the IMF's 99% done!
 
Finished the IMF Professional Recap a few hours ago. I just have to say...whoa...tremendous tremendous difference. The highs are no longer reticent, the mids are cleaner and are a bit more forward. Hopefully I get some quality time to just sit down and listen. These things sound tremendous now...they sounded okay before but some of the heat/smear in the mids and the reticent highs kept them from being 'great'. They are great now...crisp highs. One cap was missing from my kit, a mylar 1.5uf cap so I just left the original in since I'm sure it was non-degrading. I left Falcon know...I was going to compare my IMF's to my KEF 105/2's over the weekend post recap as well but Falcon shipped me the wrong version caps there as well. Oh well, at least I got to get the IMF's 99% done!


Right on! About the sound difference that is. Like I mentioned to you over email I found them to be OK.. Not spectacular or "wow" in any way. But after the recap it totally opened the floodgates. Now you can hear them the way they are meant to be heard :thmbsp: keep us posted on what you think of their sound.


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You weren't joking. They are tremendous. I am going to go park myself in front of them now and just run through reference track over reference track. Thanks for keeping my hopes up before I recapped them. I will post more impressions after I immerse myself ;)
 
You weren't joking. They are tremendous. I am going to go park myself in front of them now and just run through reference track over reference track. Thanks for keeping my hopes up before I recapped them. I will post more impressions after I immerse myself ;)


No problem! I'm always happy to help out a fellow audiophile/music lover achieve some great sound. Enjoy!


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Sorry Bart, expand on what you are asking and who? Were you asking how mine sound on stands? I ordered stands at 8" tall since yours are at approximately 5 3/4, I wanted to get a little more height so that I could use them on other things and they will have tilt back/forward options with the spikes, etc. I won't have them for a few weeks though.
 
Sorry Bart, expand on what you are asking and who? Were you asking how mine sound on stands? I ordered stands at 8" tall since yours are at approximately 5 3/4, I wanted to get a little more height so that I could use them on other things and they will have tilt back/forward options with the spikes, etc. I won't have them for a few weeks though.


I think he is referring to Soundwise's post about the Linns he has.


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They indeed imaged far better than I expected despite having a flat baffle with raised edges. The highs sound really good now, no reticence, in fact I would say they are kind of pronounced. The mids are more forward than the KEF's and don't have the buttery quality that KEF's have, just very clear and accurate. The bass is just exactly what it needs today, I don't know of much of a better way to say it. When it exists in the source material it becomes apparent in the perfect amount and is tight/accurate like I would expect something utilizing acoustic suspension to sound. I had heard reports of it being 'wooly' or 'slow'....I hear nothing of the sort, this stuff is tight and accurate. On Bela Fleck's track Flight of the Cosmic Hippo that kicks out passage after passage of low bass the IMF's were articulate...no one note bass here, it was a distinct instrument that seemed to have no bottom to the capability of the lows. No loss of control displayed at the lowest point as well.

I am still putting these through their paces but they continue to just be impressive in general.

Let's see if getting them on a stand increases their performance even more.
 
They indeed imaged far better than I expected despite having a flat baffle with raised edges. The highs sound really good now, no reticence, in fact I would say they are kind of pronounced. The mids are more forward than the KEF's and don't have the buttery quality that KEF's have, just very clear and accurate. The bass is just exactly what it needs today, I don't know of much of a better way to say it. When it exists in the source material it becomes apparent in the perfect amount and is tight/accurate like I would expect something utilizing acoustic suspension to sound. I had heard reports of it being 'wooly' or 'slow'....I hear nothing of the sort, this stuff is tight and accurate. On Bela Fleck's track Flight of the Cosmic Hippo that kicks out passage after passage of low bass the IMF's were articulate...no one note bass here, it was a distinct instrument that seemed to have no bottom to the capability of the lows. No loss of control displayed at the lowest point as well.

I am still putting these through their paces but they continue to just be impressive in general.

Let's see if getting them on a stand increases their performance even more.


That sounds very much like the difference I found between the Kef 107s and the IMF RSPM Mk IVs. The Kefs have a sort of syrupy quality to the midrange, whereas the IMFs were just more clean sounding. In the end I chose the IMFs for their richer and more natural presentation which fits my listening preferences better. They are, in my mind, the closest to a true high fidelity experience I've ever had. The Kefs were wonderful too but in the end I found them a bit too laid back and coloured sounding.


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That sounds very much like the difference I found between the Kef 107s and the IMF RSPM Mk IVs. The Kefs have a sort of syrupy quality to the midrange, whereas the IMFs were just more clean sounding. In the end I chose the IMFs for their richer and more natural presentation which fits my listening preferences better. They are, in my mind, the closest to a true high fidelity experience I've ever had. The Kefs were wonderful too but in the end I found them a bit too laid back and coloured sounding.


Sent from my iPhone using Tapatalk

So a few things that may prove amusing. Last night during my extended session I noticed a lack of sparkle out of the left speaker. I was concerned that the super tweeter perhaps was either dead or I had botched the recap and had a bad solder joint on one of the inline caps to the super tweeter. I put my left ear to the driver and heard no highs. I ended up running 15khz test tones through and having my kids come in to verify and clearly there was output out of both. I also noticed that there was less volume out of the left hand speaker so I was getting ready to change the levels on my amp.

This morning I went to the minute clinic due to a persistent cold...and found out that I had an ear infection in my left ear and that there was a lot of fluid pressure there...basically my hearing was drastically reduced in my left ear as a result. This threw me into a 30 plus minute troubleshooting tizzy last night. Just figured you guys would find it amusing.

In any case I'll be up in Toronto next week so my posts will be sparse but I also want to add that I used black rit dye on my reticulated foam speaker grills and it worked out very well, significantly blackened the foams which looks a lot better aesthetically than the gray that they were before. So with this info the foam factory grills just became more versatile because they do indeed accept cheap 3.99 a bottle rit dye.

John
 
So a few things that may prove amusing. Last night during my extended session I noticed a lack of sparkle out of the left speaker. I was concerned that the super tweeter perhaps was either dead or I had botched the recap and had a bad solder joint on one of the inline caps to the super tweeter. I put my left ear to the driver and heard no highs. I ended up running 15khz test tones through and having my kids come in to verify and clearly there was output out of both. I also noticed that there was less volume out of the left hand speaker so I was getting ready to change the levels on my amp.

This morning I went to the minute clinic due to a persistent cold...and found out that I had an ear infection in my left ear and that there was a lot of fluid pressure there...basically my hearing was drastically reduced in my left ear as a result. This threw me into a 30 plus minute troubleshooting tizzy last night. Just figured you guys would find it amusing.

In any case I'll be up in Toronto next week so my posts will be sparse but I also want to add that I used black rit dye on my reticulated foam speaker grills and it worked out very well, significantly blackened the foams which looks a lot better aesthetically than the gray that they were before. So with this info the foam factory grills just became more versatile because they do indeed accept cheap 3.99 a bottle rit dye.

John


That is amusing! Well it's funny when things happen like that because it's the least thing you would expect it to be. At least now you can get your health in order.

I guess I'll have to ask you when your ear is all better what you think of the IMFs then :)

Well guys I am currently running my IMFs on tube watts. I finished recapping the Sansui 500a yesterday and have it hooked up this morning playing tunes using my Denon DP-A100 as a source. I haven't had lots of playtime yet so I won't delve into it but first impressions I always feel are important and so far I am very impressed. As I suspected 20 watts is more than enough power to get to loud volumes.

I'll add more thoughts once I've had a couple weeks of listening through this setup.


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Any direct comparisons of IMF Compacts, Super or CM3 against a spendor BC1? I've only given a short listen to my CM3's but what I did was very nice and pleasing, liked them better than the super compacts, they have a more direct exacting sound.
 
A good cheap tweak

I just fitted a pair of Russ Andrews Focus Rings around the tweeters of my IMF TLS50s on the recommendation of a member of another forum. The HF drive units are very close to the recessed baffle edge and grill frame and the idea is that the felt rings reduce the resultant diffraction effects. I must say that imaging has been improved and seems even more precise and I find that they have caused no reduction in HF response. Here's a link:

http://www.russandrews.com/product.asp?lookup=1%AEion=UK%A4cy=GBP&pf_id=5750&customer_id=PAA2673104814618XSULFJOFCYNGOWZNhttp://

2014-11-13140551_zps329f5e3d.jpg
 
Another option (I bought them in bulk) at $2: https://www.madisoundspeakerstore.com/acoustic-damping/dampers-felt-defraction-ring-for-tweeters/

I just fitted a pair of Russ Andrews Focus Rings around the tweeters of my IMF TLS50s on the recommendation of a member of another forum. The HF drive units are very close to the recessed baffle edge and grill frame and the idea is that the felt rings reduce the resultant diffraction effects. I must say that imaging has been improved and seems even more precise and I find that they have caused no reduction in HF response. Here's a link:

http://www.russandrews.com/product.asp?lookup=1%AEion=UK%A4cy=GBP&pf_id=5750&customer_id=PAA2673104814618XSULFJOFCYNGOWZNhttp://

2014-11-13140551_zps329f5e3d.jpg
 
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