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The Dynaco Tube Audio Forum

Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Tubes4hifi VTA tube amp and preamp kits and all Dynakitparts.com products


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Pablo
tubes4hifi
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    16 ohm speakers

    tubes4hifi
    tubes4hifi
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     16 ohm speakers Empty 16 ohm speakers

    Post by tubes4hifi Sun Aug 29, 2021 11:01 pm

    I'd like to hear from every person reading this if they now have or recently (past ten years)
    have had any 16 ohm speakers. Seems most speakers these days are 8 ohm or 4 ohm (or something in between).
    If you have 16 ohm speakers, just post a reply, maybe say what brand/type they are, and if you know their sensitivity/efficiency (say 85db, 90db or 95db, or whatever).
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    Pablo

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    Join date : 2021-04-21

     16 ohm speakers Empty 16 ohm speakers

    Post by Pablo Mon Aug 30, 2021 9:59 am

    Lowther PM2A drivers in Medallion front firing Horn cabinets.

    The voice coils are actually 15ohms and they're 102db.
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    j.click

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    Join date : 2020-03-29

     16 ohm speakers Empty Re: 16 ohm speakers

    Post by j.click Mon Aug 30, 2021 5:31 pm

    Quad ESL speakers. Impedance really swings, but well past 16 ohms in lower notes and I run them off the ST70 16 ohm taps.
    Earl
    Earl

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    Join date : 2020-05-10
    Location : Arkansas

     16 ohm speakers Empty Re: 16 ohm speakers

    Post by Earl Mon Aug 30, 2021 7:55 pm

    There don’t seem to be too many, but I had an old pair of Chartwell LS3/5A’s years ago, which I believe were 15 ohm. Very inefficient, maybe 83. The fairly new Falcons are 15 ohm.

    I also run my ESL-57’s off a 16 ohm tap - in this case a Dynaco ST-35 with some spiffy MAGNEQUEST MQ565 output transformers.
    WLT
    WLT

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    Join date : 2013-07-13
    Location : Rochester NY

     16 ohm speakers Empty Re: 16 ohm speakers

    Post by WLT Mon Aug 30, 2021 10:45 pm

    I have a pair of Altec 615A duplex drivers mounted in open baffles stands I built. These are 16 ohm nominal. They are rated at 97 dB at 1 watt and 4 feet. No problems driving them with any of the Dynaco amps. Also have a single Electro Voice Georgian. 16 ohm nominal and efficient but I do not have the specs. Maybe mid 95 dB or so. Easy to drive as well.

    Many of the the older vintage speakers were 16 ohm. Think about the 1955 Dyna MK II coming without a 4 ohm tap for a year or two. Just 8 and 16 ohm for the A430 transformer. If you blow the diaphragms many of the replacements are 8 ohms. Not good as the crossovers were designed for 16 ohm. Assuming the speaker has a diaphragm that is replaceable.
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    1973shovel

    Posts : 36
    Join date : 2009-12-13

     16 ohm speakers Empty Re: 16 ohm speakers

    Post by 1973shovel Wed Sep 08, 2021 10:05 am

    WLT wrote: Think about the 1955 Dyna MK II coming without a 4 ohm tap for a year or two. Just 8 and 16 ohm for the A430 transformer.

    Also the original Z-565 output transformers (SCA-35 and ST-35) which did not have a 4Ω tap.

    I used the 16Ω taps of my ST-70 when I owned my Quad ESL-57, the same as Earl and j.click.

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