What speakers are these? Can't find ANYTHING. - Page 2 - AudioKarma.org Home Audio Stereo Discussion Forums

phild1087 · #16 11-05-2009, 11:52 AM

Quote:

Originally Posted by FantasySage

Turn Tables aka record players aka phonographs

Oh, you mean the thing that they're sitting on in the pictures?

The abbreviation threw me off. Sorry. I'll see if I can find anything under Seiko Micro. Thanks.

phild1087 · #17 11-05-2009, 11:54 AM

Quote:

Originally Posted by soundmotor

Interesting design, I'm guessing 80's cassette Walkman era.

The 100-ohm input may be for headphone-out use on a battery-powered source.

That's what I initially figured, but there's nowhere to put in batteries or a power supply. The jacks on the back are definitely mono mini jacks.

I mean, unless there's some way to get 100 ohms from a mini jack.... ?

JohnVF · #18 11-05-2009, 11:56 AM

Quote:

Originally Posted by soundmotor

Interesting design, I'm guessing 80's cassette Walkman era.

The 100-ohm input may be for headphone-out use on a battery-powered source.

There were quite a few of those types of speakers back then, I know I had some, that connected to the headphone output of my Walkman. The original 'idock" so to speak. The notch on the back also suggests that they attach to something else, a stand or maybe some sort of amp unit, like a boom-box type of thing.

visiman · #19 11-05-2009, 01:18 PM

Take one apart and see if what you find! Maybe a clue.

soundmotor · #20 11-05-2009, 02:37 PM

Quote:

Originally Posted by phild1087

That's what I initially figured, but there's nowhere to put in batteries or a power supply.

The speakers would be treated as headphones and driven off the headphone amp in the portable device. It isn't going to crank but it will play loudly enough.

soundmotor · #21 11-05-2009, 02:42 PM

Quote:

Originally Posted by JohnVF

The notch on the back also suggests that they attach to something else, a stand or maybe some sort of amp unit, like a boom-box type of thing.

I think that is just a typical keyhole hanger for wall & stand mounting.

OP, do they have a threaded boss on the bottom?

soundmotor · #22 11-05-2009, 02:46 PM

I took another look at that and realized the 100-ohm inpout impedance if off the spring terminal inputs and the 20-ohm input is from the mini-jack. That makes sense. The mini-jack input is definitely for headphone out use. The 100-ohm input it for use with a regular hi-fi amplifier and there is a series resistor to limit power to the driver in the cabinet. The more I look at them the cooler they get!