Focal JM Lab Mezzo Utopia modification

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Comments

  • VR3VR3 Posts: 23,782
    Looks good
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • VR3 wrote: »
    Looks good

    Thanks!

    I'll get crackin' on getting that tweeter out.

    Off topic question_ I have a Utopia system, Mezzo's, Mini Utopia Center, Sub Utopia and surround JM Lab speakers. I've got Jeff Rowland Model 12's for each mezzo speaker. Question is, I have to crank the Classe processor to like 78 db to get the sub to go on. Is there a way I can lower the sensitivity
    so the sub goes on at like 50 or so db? Or is that how it has to be. I have the crossover set to around 55 HZ.
  • VR3VR3 Posts: 23,782
    That would be a question for no Michel with Focal, he has been there since before the utopia line, very knowledgeable
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • VR3 wrote: »
    That would be a question for no Michel with Focal, he has been there since before the utopia line, very knowledgeable

    Will do.

    Anyone ever heard of this "Sam Ready Speakers for Mezzo Utopia?
    https://www.devialet.com/en-fi/expert-pro-sam-ready-speakers/jm-lab/mezzo-utopia/

    I can't find any information about it on their web page. It's some sort of processor I guess.
  • VR3 wrote: »
    I didn't take frequency sweeps, the fact they brought physical pain to my ears was enough. Putting the old domes back in restored the highs to normal levels with zero distortion

    might be possible to add series resistance to dial them down. but yes if you still have the old dome, that's better. where do you find the foam surround for the tweeter?
  • VR3VR3 Posts: 23,782
    I tried adjusting the volume lower, which it did, but there is so much break up in the dome without the dampening coating that it is unlistenable at higher volumes.

    If you listen under 70db you may be ok
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • jdjohnjdjohn Posts: 1,384
    edited February 29
    Trey, are the tweeters on these Aria 906 likely more shrill? I'm assuming they're titanium...clearly not coated.
    bbz8euvk76kf.jpg

    Edit: Never mind, I see now it's Al/Mg.

    "Sometimes I do what I want to do. The rest of the time, I do what I have to." - Cicero, in Gladiator
    Regarding collectibles: "It's not who gets it. It's who gets stuck with it." - Jimmy Fallon
  • jmpsmashjmpsmash Posts: 5
    Where do you guys find the foam surround for the Focal tweeter? I have an old one with flaking surround that I want to restore.
  • VR3VR3 Posts: 23,782
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • DaydreamerDaydreamer Posts: 17
    VR3 wrote: »
    I can assure you that tweeter is making no sound.

    You can ship your dome and motor to focal in France and they can repair.

    This is the focal rep, he is awesome

    [email protected]

    I don't knooty10u49ojs8.png
    I don't know if anyone will read this but I got out my Radio Shack Sound Meter and as I thought(due to both wires still attached to the cone), this tweeter is playing. I shielded above and below the meter reader as best I could and the meter is reading exactly the same as the readings for the normal looking other tweeter.

    The meter has an elongated round metal extension that fits right up to the round tweeter. I may still looking into refoaming it, esp. if I can also get another metal protector to solder on. Anyhow, thought I'd post my findings. Thanks.
  • VR3VR3 Posts: 23,782
    Sir, there is no dome pictured to resonate, I'm not sure what your meter is reading but it is not a tweeter
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • StimpyWanStimpyWan Registered User Posts: 51
    Is it possible the movement of the voice-coil is generating the sound that's being measured and heard?
  • VR3VR3 Posts: 23,782
    Possibly, but I can't imagine it being any proper sound a tweeter makes
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • DaydreamerDaydreamer Posts: 17
    edited May 3
    VR3 wrote: »
    Sir, there is no dome pictured to resonate, I'm not sure what your meter is reading but it is not a tweeter
    Well, I don't know. You may be right. But the sound meters tweeter readings are seemingly the same as the other speakers tweeter. I place the meters "nose" right up in them and try to block the nose from picking up sound from the other speakers...Like I said, once this world gets back to normal and I'm working again, I'll email Michel at Focal. I am a little nervous clipping the wires and resoldering. But I do have a soldering gun...
    pyhbc0bsvgyk.png

  • DaydreamerDaydreamer Posts: 17
    VR3 wrote: »
    Possibly, but I can't imagine it being any proper sound a tweeter makes

    You were right. It(they) are not...I hoped against hope but you were right all along. The sound meter was picking up the mids...Neither tweeter is producing sound or pushing air. My Mezzo's sound flat and muffled. My center mini utopia sounds fantastic and and I can tell and feel the difference. It's pushing out air...So I will contact Michel. Can I cut the wires and remove(what's remaining of) the beryllium tweeters and send them to Focal France for replacement?...And then solder them into position? Or is there no need to send the failed tweeters...I've read what you posted that they are now different from the earlier tweeters(aluminum and brighter darn it) but I guess that is the only option?
    Thank you for your help.
  • VR3VR3 Posts: 23,782
    edited May 20
    You would have to order the new diaphragms or keep an eye out for a replacement for the old on ebay

    Another option is to buy a set mezzo utopia that are beat up and use for parts
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • BlueBirdMusicBlueBirdMusic Registered User Posts: 1,049
    Trey, patience is a virtue!!
    Harry
  • DaydreamerDaydreamer Posts: 17
    VR3 wrote: »
    You would have to order the new diaphragms or keep an eye out for a replacement for the old on ebay

    Another option is to buy a set mezzo utopia that are beat up and use for parts

    Excuse my lack of knowledge and understanding but do you think the beryllium in the tweeters is still good? Nothing happens with the tweeters sound wise. The right speaker tweeter looks perfect from the outside. But nothing. It doesn't push any air. Would I not need to remove the old tweeters and solder in new tweeters? New diaphragms would cure that problem? I would have to send the tweeters out to Focal as it sounds like it's complex.

    I looked on EBay but couldn't find the appropriate diaphragms....These are not the correct beryllium tweeters but is this similar to what I'd need?
    https://www.ebay.com/itm/2-FOCAL-TSC-HOME-AUDIO-JM-LAB-HOME-AUDIO-TWEETERS-MADE-IN-FRANCE-PAIR-NEW/123057749139?hash=item1ca6d03c93:g:KekAAOSwB4NWu5nS

    Thank you for your help.
  • pitdogg2pitdogg2 Posts: 16,303
    Voice coil is cooked it should in most instances still appear normal. I've never had any tweeters "push" air that is a new one on me.
  • VR3VR3 Posts: 23,782
    The older Utopias used a coated titanium dome, not beryllium.

    They don't do bad in the sense you describe, but you are completely missing the dome
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • DaydreamerDaydreamer Posts: 17
    pitdogg2 wrote: »
    Voice coil is cooked it should in most instances still appear normal. I've never had any tweeters "push" air that is a new one on me.

    Sorry. Maybe what I meant was when I put my hand over the good tweeter in my mini utopia center channel speaker, I feel something and my hand does muffle sound coming out of the tweeter.

    Is replacing the diaphragm easy for someone who has never done that kind of thing before?.... Just contact Focal and let them ship the diaphragm's to me? Or I send the tweeter board/assembly or what it is to Focal and they change the diaphragms?

    Too bad the new diaphragms are aluminum and brighter. But they'd sound good compared to no sound.... I've searched around and I can't find older diaphragm's like mine. Probably tough to find only the diaphragm's for sale....

    Thank you!
  • VR3VR3 Posts: 23,782
    The new ones are still titanium, just not coated.

    Very easy to install, no skill set required other than soldering
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • DaydreamerDaydreamer Posts: 17
    VR3 wrote: »
    The new ones are still titanium, just not coated.

    Very easy to install, no skill set required other than soldering

    Excellent. So, I will send an email to Michel and ask to purchase 2 new tweeter diaphragm's? Simple as that?

    These are not Mezzo Utopia diahpragm/tweeters but I guess I couldn't use these tweeters diaphragm that have the cone and foam exterior in some way. could I?
    https://www.amazon.com/TSC-Focal-Home-Audio-Tweeters/dp/B01BIH8D16

    Thanks again.
  • DaydreamerDaydreamer Posts: 17
    Oh. In addition, might you know what the cost of each diaphragm is? Just curious. Thank you.
  • VR3VR3 Posts: 23,782
    No the tsc is no where close.

    They run around 100 each, Michel is great
    - Not Tom

    "No, that's silly talk. Dude, you can't possibly be this audio dumb so quit the act." - Doro
  • DaydreamerDaydreamer Posts: 17
    VR3 wrote: »
    No the tsc is no where close.

    They run around 100 each, Michel is great

    Awesome! I will email Michel now. Thank you so much.

    I had a feeling those tsc's wouldn't work....
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