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 Post subject: Realistic Electrostat 3 speaker
PostPosted: Oct Sat 28, 2006 6:20 pm 
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Location: Newburyport, MA. USA
Is this speaker single ended or push-pull? I realize these are a big step down from a Janszen 130, is it getting one for a vintage set-up?


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PostPosted: Oct Sat 28, 2006 8:30 pm 
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Location: Mpls, Minnesota
Amplifiers are classified as single ended or push-pull, not speakers.

Dave


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 Post subject:
PostPosted: Oct Sat 28, 2006 9:01 pm 
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Acording to 1962 High Fidelity Magazine article, it reads: "There are two types of electrostatic speakers, the single ended type which employs two electrodes-one fixed and the other movable. The more sophisticated type is the push-pull type, there are three plates used to forrm a sandwich with the outer plates being fixed, immovable electrodes and the inner plate acting as a moving diaphram: A transformer is used to provide polarizing voltage". I just wanted to know wich type the Realistic Electrstat-3 is ?


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PostPosted: Oct Sat 28, 2006 10:12 pm 
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Interesting, I had never seen them referenced this way, who says you are never too old to learn.

Dave


I found this with a quick web search



Four of these electrostatic tweeters were used in a bookshelf
speaker (ESA-3) that was sold in the early '70s. If memory
serves, the woofer was an 8".

The electrostats are single ended, meaning that they do
not operate in push-pull mode as do modern ESLs.
Because of this, and their size, they are suitable only for
use as tweeters. The X/O is probably on the order of 5K Hz.

The ESA-3 sounds pretty decent, although it was never
state-of-the-art. Single ended electrostatic speakers
are prone to having higher distortion figures because at
full travel the diaphragm is not able to be controlled as
well as when it is closer to the rear stator. This is why
large(r) full range panels have both front and rear stators


Last edited by easyrider8 on Oct Sat 28, 2006 10:22 pm, edited 1 time in total.

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 Post subject:
PostPosted: Oct Sat 28, 2006 10:16 pm 
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Location: Fernandina Beach, FL
Dave,

I was about to reply the same way that you did. You beat me to it so we both learned something. I have a pair of electrostatic speakers somewhere downstairs. If I remember correctly, the tweeters do not work...

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