Cobrasse

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  • Participant
    Cobrasse on · in reply to: [French projet] Which TD12 ? #11311

    Hi,

    Thank’s for the anwser.

    So no regrets takings the M version to reproduce 40Hz/45Hz to 800Hz bandwith at 105dB/2.83volts/m, with lowest distorsions as possible, lowest damping as possible …

    If the X version is as good as the M version until 800Hz, I prefer the model who have the better xmax !

    Your conclusion will be my choice 😉 .

    Thnak’s a lot for your kindness and your time.


    Participant
    Cobrasse on · in reply to: [French projet] Which TD12 ? #11309

    Thank’s,

    So, i think that the TD12M is the best way for me … It’s for home application in a living room !

    I do have concerns about the distortion in low frequency ? I see important H2 on this picture under 100Hz :

    https://sites.google.com/site/drivervault/driver-measurements/tang-band-75-1558se/ae-speakers-td12m/non-linear-distortion/HD_sweep.PNG?attredirects=0

    Only + version have ring to reduce distorsions ? No 12″ is equiped ?

    I apologize for all this question. But it comforts more my choice 😉

    Best regards


    Participant
    Cobrasse on · in reply to: [French projet] Which TD12 ? #11307

    Hi,

    Thank’s, I like your answers 😉 .

    if you were in the same situation as me to this project, you choose the H, X or S (perhaps the M with xmax +/- 6mm is enough for my application and if it’s high reponse in high frequency is really better I can choose it !)… ? They are similarities, but in high frequencies who’s the better ? They are the same cone, the difference of weight is just the mass of the voice coil, no ?

    Should be favor a High Bl ?

    The Qms is the mechanical’s lost, I heard that higher is better. Your opinion on it ?

    Best regards


    Participant
    Cobrasse on · in reply to: [French projet] Which TD12 ? #11305

    Hi

    @stryke wrote:

    You will find it very hard to find something else with equivalent efficiency, low Le, low distortion, and extended frequency response at any cost. These have a very thick gap plate at 19mm and 38mm long coil. This gives just under 10mm overhang and Bl curve verifies over 14mm Xmax.

    Argh ! This is a huge xmax.

    How does the spider and suspension with such travels ? I see some klippel test : http://medleysmusings.com/category/speaker-driver-tests/midwoofers/

    And the curve of Cms & Kms are like this :

    http://medleysmusings.com/wp-content/uploads/2014/03/Mechanical-compliance-Cms-X.png

    http://medleysmusings.com/wp-content/uploads/2014/03/Stiffness-of-suspension-Kms-X.png

    or it has offset’s flaw et non linearity ?

    The PHL specifically has a massive breakup at 2KHz. At 0 degrees you can see a large bump and by 45 degrees it has become a very large dip. Even though this is not in the intended bandwidth it will be a significant problem. Looking at the waterfall plot shows this extends very long in time. I would not use this driver above 500hz at the most to keep this issue from being audible. Crossing at 250hz is more ideal for the PHL.

    Yes, but le TD12M break’s too around 2 khz : https://sites.google.com/site/drivervault/driver-measurements/tang-band-75-1558se/ae-speakers-td12m/frequency-response/CSD.PNG?attredirects=0

    I know that PHL favors a very good damping before the big break, like aluminium’s cone

    you can email Jessica, info(at)aespeakers.com and she can get you a quote for the woofer and shipping.

    thank’s

    Best regards.


    Participant
    Cobrasse on · in reply to: [French projet] Which TD12 ? #11302

    Hi, Thank’s for the answer,

    The TD12X or TD12H are usable for my project

    how much measure the Height Gap and the height coil on these speakers ?

    How do you proceed to send the speaker to France ? How much the price of the speaker + shipping ?

    Have a good day

    PS : There are in the top 3 for my project 😀 . The total cost determines my choice.

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