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  1. Replies
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    The new Harman by Samsung is rearranging...

    The new Harman by Samsung is rearranging everything to how they see fit.

    Progress.

    Google searches will most likely be of help. That's how I found this link. Finding old resources that used to...
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    Not deleted, just moved. Here's a new link to...

    Not deleted, just moved.

    Here's a new link to the Tech Note on JBL Polarity Conventions.

    https://adn.harmanpro.com/site_elements/executables/19582_1571428017/JBL_TechNoteN1V12C_v5_original.pdf...
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    I can recone your LE5-12 with a reproduction kit...

    I can recone your LE5-12 with a reproduction kit for $99.00.

    I just checked with JBL and the factory kit has been discontinued, and is no longer available.

    BTW...OEM=Factory Original Equipment...
  4. Resuspension with new surround installed cleanly,...

    Resuspension with new surround installed cleanly, new spider, replace rotted dust screen, clean gap of foam goo...

    They'll perform like new.

    There is a couple of videos on my Facebook page of...
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    I can reproduce the 122A-1 recone kit with very...

    I can reproduce the 122A-1 recone kit with very good accuracy of the T/S parameters. I can also reproduce the 128H-1, although the kits is current, as well as the 129H. The main difference of the...
  6. Not out of business. Been busy...and recovering...

    Not out of business. Been busy...and recovering from colds/flu for the past couple of months. The best way to message me is via email or telephone. The 128Hs in for repair...with JBL C8R128H recone...
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    No.

    No.
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    The passive radiator works on the same principal...

    The passive radiator works on the same principal as a bass reflex vent. At the mass-weighted tuning resonance of the PR300, the excursion...movement...of the 128H will be not discernable, as the...
  9. Here’s an email from a customer in Finland back...

    Here’s an email from a customer in Finland back in 2015:

    ”Hi Ken.Reconing went well and the reproduction cone sounds very accurate but little bit dry.I think thats because the cone is not broken...
  10. Voice coil is edgewound copper wire on kapton...

    Voice coil is edgewound copper wire on kapton former. The cone is sourced from a US supplier.
  11. Reproduction 2245H recone kit...

    Here's your solution to a JBL 2245H recone kit. Drops in to any frame for 2245H/2240/E155. The frame MUST be prepped and cleaned thoroughly. From my Facebook page. I had been on sabbatical for most...
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    Yes....but the humidity in Oslo today is 86%, and...

    Yes....but the humidity in Oslo today is 86%, and 74% average year round. 8 years of accumulated moisture is going to have an effect, as you can see. Once the moisture goes in, it's not coming out...
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    Very moist air is not compatible with compression...

    Very moist air is not compatible with compression drivers. The patterns on the phase plug side of the diaphragm is typical of moisture entering the horn throat.

    A dehumidifier might help in the...
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    After a little investigation on the Materion...

    After a little investigation on the Materion website, there is a photo on the following link, right-hand side of page that shows what looks to be...Be...a 4" diaphragm that could very well be the JBL...
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    If it's any indication of the construction...

    If it's any indication of the construction techniques of the 476Be. The neo 2435 beryllium diaphragm is suspended with a kapton former. The voice coil is also encapsulated in a sheath of kapton to...
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    Get a set of machinist picks/scribes. Use the...

    Get a set of machinist picks/scribes. Use the scribe with the 90° angle inserted through the screw hole and pull upwards as the speaker is lying on his back. Might try heating up the woofer frame so...
  17. I humbly stand corrected on the operation of the...

    I humbly stand corrected on the operation of the Differential Drive Transducers and how the electromagnetic braking effect works. I found this article by Doug Button...the inventor...of how this...
  18. My mind tells me that this topology is analogous...

    My mind tells me that this topology is analogous to a see-saw action in respect to the sinewave. Push-Pull with regard to pushing the cone outward with one coil while the other coil reverses the...
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    Back in the early 1980s in Orange County was a...

    Back in the early 1980s in Orange County was a band named "The Snowmen", from Erie, PA. They were CA touring to try to make the big time. White makeup like Kiss, and everything on stage was white....
  20. Hi ivica, None of the JBL drivers you mention...

    Hi ivica,

    None of the JBL drivers you mention have dual layer voice coils. All edgewound voice coils are single stack, single layer.

    I believe B&C has some drivers that have "inside/outside"...
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    I saw a pair of TAD Reference One...as new...for...

    I saw a pair of TAD Reference One...as new...for less than half price on AudioGon the other day. Under $35K. They blow away anything by Revel. Just being honest.
  22. This type of dual voice coil driver/motor...

    This type of dual voice coil driver/motor topography is much different that the typical dual voice coil driver, say for for car audio, where the dual coils are wound together on the former, have...
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    Very much why I didn't particularly care for the...

    Very much why I didn't particularly care for the 4367. Too much detail was pushed back in the mix. The sound was very big, but rather very bland.
  24. Not really. Mic placement has everything to do...

    Not really.

    Mic placement has everything to do with soundstage and image. Two mics placed above an orchestra or small band will have very little "soundstage", other than left or right. Two mics...
  25. Hi Ian, Live music/sound quality is very venue...

    Hi Ian,

    Live music/sound quality is very venue dependent, and whom is manning the mixing console. Small venues like a jazz club are great for hearing what live instruments sound like without the...
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