Unusual HiFi products from the past.

SeleniumFalcon

mhardy6647

oh, yeah, baby! -- field coils are where it's at!

I know some guys...

https://hifiheroin.blogspot.com/search?q=tungar

SeleniumFalcon

I suppose you could think of electrostatic speakers as "field coil" speakers when compared with "magnetic planar" type speakers.

mhardy6647

Well -- not really... but, I mean, you know that.
(EDIT: But -- yeah -- I do see your point, and take it! )

Electrostatic transducers use a high voltage DC field (thousands of volts) with very little current. Like Dogbert -- I mean, Thor, Dog of Thunder.


https://dilbert.com/strip/1990-01-10

Electromagnets (field coils) are energized with fairly low voltage DC (tens of volts) but usually with significant amounts of current.
In the old days, the loudspeaker field coil often served double-duty as a power supply choke (inductor), too!




There are - arguably - real advantages to using electromagnets instead of permanent magnets... although electrical efficiency isn't one of those advantages.

I will confess that I cannot help but think about scrap metal yards when I think about electromagnets.

SeleniumFalcon

Odd Job likes electromagnets in his line of work.

mhardy6647

SeleniumFalcon wrote: »

Odd Job likes electromagnets in his line of work.

... and ain't that a great, early (Falcon-based) Ford Ranchero?!

OleBoot

Not DIS Walkman, but....

mhardy6647

OleBoot wrote: »

Not DIS Walkman, but....

Q:
What do you call somebody else's panda?

A:



source: https://icouldbeahero.blogspot.com/search?q=panda

SeleniumFalcon

SeleniumFalcon

SeleniumFalcon

mhardy6647

SeleniumFalcon wrote: »

Did they sell a CD rewinder, too -- or were those just for rental DVDs?

pitdogg2

I had a couple of CD cleaners over the years. The best was the discwasher. I bought a dozen of the replacement pads and still have a few. Just wish I had the spray.

SeleniumFalcon

SeleniumFalcon

SeleniumFalcon

SeleniumFalcon

SeleniumFalcon

skrol

Improves AM performance... I am sure that is what we are all after. Neat find though.

SeleniumFalcon

SeleniumFalcon

SeleniumFalcon

tramp59

Wonder how well that worked?

mhardy6647

Since I had dug this up for something else, might as well drop it here, too.



The Esquire is a pretty interesting little loudspeaker -- a lot like the Klipsch Heresy (small-ish sealed box, high sensitivity, good dynamics -- and the same tweeter!) but, unlike the Heresy, a much, much better sounding midrange driver (direct radiator instead of horn/compression driver).

pitdogg2

$123.00 shoot I'll take 2

mhardy6647

pitdogg2 wrote: »

$123.00 shoot I'll take 2

I mean, I paid less than that for mine... but, heck yeah.

soundfreak1

mhardy6647

soundfreak1 wrote: »

child's toy.

soundfreak1

I have been 1 upped. LMAO

skrol

Should take those to he Headphones forum.