Thank you in advance. Thumbs up.
After many visaton and monacor drivers that are a good starting point, i came across the fostex drivers and fell in love with fullrange speakers. This here is very high magic for me, but i am amazed with the detail and how light and direct they sound.
The only simmilar drivers i heard were the tang band w4 1879 at much higher price tag. Dave, if you dont know the tang bands, i hope you will give them a chance sometime. But, as most modern drivers, they need correction.
I hope to achieve nice frequency response without electrical correction with the fe127 mods. Do you think this is possible ?
I saw way too late, that the fonken is not really meant for the old fe127, but rather for the the fe127e with different tsp set. Do you think i should let the fonkens be and try tbe nfolded monopole for fe127 that you designed in 2006. I want a speaker without elctrical correction. Is the folded nmonopole v1 more suitable ? Its designed with the fe127 in mind.
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I did them both if I remember correctly, one was over the whole cone, the other just the tri-foil. Was never happy with the result. The driver was absolutely magical for adding 'life' and directness but I could only use it for centre channel HT where it gave voices a lift. I changed it for a different speaker to match the L and R, something I shouldn't have done. But for music, the FE127 never failed to irritate me. I so wanted to keep them. I ran out of patience and gave up before I ever got to the 'dots' treatment.
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You tried baffle step correction ? How wide was the baffle? What values were used ?
I hope not to run into the same problems. I love the driver, but the hf seems too harsh without treatment.
I have 2 of those. I found they sounded a bit funny. Coloured? The 2 measure far enuff apart that it is hard too call them a pair. For sale cheap.
dave
Ok, i will bring the sparkle stuff back. Problem is, that matt was the only other choice. Do you prefer it because of the visual appearance or is it technical nature ?
Once again thank you for the time, you invest here.
Thats way too far, damn. Im not sure how far they spread when they come from factory, mine are selected by a local retailer. He mesures them for little money and creates compatible pairs. Never thought they can be so varying.
But i have to qdmit, that they changed sound dramatically after a burnin time of about 100 hours. After this period i had to change the cap and coil values.
Still, thes go very deep for 4 inch Fullrangers. Is there something compareable ? I hit 45hz f3 with them in an enclosure of about 4liters.
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Let me say at the outset, I believe I am far more sensitive to the treble 'issue' than most 'normal' folk. The FE127 had a big following several years back and many people loved it (I bought them because of that reason, also recommended by 'planet 10').
My self-diagnosis is that I have a bit of hyperacusis going on.
Hyperacusis - Wikipedia
I think there are others with this sensitivity. A poster I haven't seen for awhile called 'InclinedPlane' used to comment on his impressions of certain full range drivers that leads me to believe he and I have similar taste. I have also observed fatigue after several hours from too much 'brightness' from well-regarded commercial 2-way speakers. The PMC FB1's I own are a tad bright and don't pair with all my amplifiers. I've read other people have found this but they were widely popular. I will 'upgrade' the tweeters to fix this one day. I also once owned a pair of Grado SR60 headphones that made me want to shoot myself through the head - treble response looks like the himalaya. No idea why any normal human could ever suffer using those things.
Anyhow, the box and baffle step are unrelated to the treble harshness, they relate to bass-treble balance. Over time (some months) my ear/brain became less tolerant to it and instead of tiring after an hour of listening I simply couldn't bear the speaker after several minutes. I'd catch myself tending to avoid playing certain types of music, searching out for tracks that were more conducive to my ears.
My boxes were too small, at around 6 litres (see attached image), they were half the volume of the 13 litre Fonken Prime (?) and I was not getting acceptable bass. But I had planned all along to use them with a supporting sub-woofer. It was for my HT set-up.
In the end I gave up on full-range for HT and now use full size tower speakers for fronts and rears. For music I still like single driver full range speakers but not the Fostex driver.
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Thank you very much.
My only question is : What is the Back side outer ring ? Is it really applied on the back of the cone ? How do you do that ?
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Not easy to apply the back ring, but dots go on like the front side. With the pen tip held upside down. Cutting the ring guide and threading it in around the cone is interesting though. I usually cut across the guide on a shallow angle and manage to tape the ends together. Exact placement for this pattern is not crucial. If you are not using the driver open baffle don’t bother with the back pattern.
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