Crosley Showbox Speaker....

hello, Can someone tell me how to hook up the Crosley Dynacone speaker to the Crosley 608 gembox?

Thanks
Robert

This is from another web site.

Dear Editor:

There appears to be an error in the identification of the loudspeakers on page 23 of the July 2001 issue. The speaker on the left, while it looks very much like an Atwater Kent E3, is probably a Crosley Type F Dynacone.

The dead giveaway is the pattern in the ornate grille. The speaker shown has the six small diamonds like my Crosley Dynacone, while my Atwater Kent speaker has six much larger, petal-shaped cutouts.

Both speakers are "magnetic" and use rigid "voice" coils to cause a magnetized bar to move and vibrate the cone. Most vintage magnetic speakers use a horseshoe, permanent magnet as did the Atwater Kent speakers and the RCA 100 and 100A. However, the Crosley Dynacone used an electromagnet excited by the radio receiver, such as the Crosley Showbox.

An implication would be that the Crosley Dynacone speaker had to be used with a receiver that could supply 22 Vdc at 40 mA for the field, while the Atwater Kent speaker could be used with any radio wired for a magnetic speaker.

--Bill Thomas, Warner Robins, GA
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I'll look to see if there is a schematic of the radio.

Min'es be a dynacone type "F" and comes with a gembox.... Is there a difference in the letters?

Thanks for all your help,
Robertt

Got me I could look some more, Wait! Heres the radio schematic, I could guide you from it !!

Is the Speaker seperate from the radio in its own Box? If so does it have wires? if so do the wires have pins? What are the wire colors. and Also how many wires?

On the radio is there a Jack or strip of female pins ?

Or are there screws that spade lugs would connect to?

the wires that come out got 2 pins and 2 wires with stripped ends, 2 sockes :pos and neg, and 2 screws... gnd, ant........

Oldsmobile Man wrote:the wires that come out got 2 pins and 2 wires with stripped ends, 2 sockes :pos and neg, and 2 screws... gnd, ant........

OK lets go over this for clarification since I cant see them.
You have 4 wires coming out of the radio or the speaker?

you have 2 wires with pins on them coming from the radio or speaker?

You have two stripped wires coming from the radio or speaker?

2 screws that say ant. and ground, are for an anntena wire and for a cold water pipe or rod ground wire that would go outside.

Oldsmobile Man wrote:the wires that come out got 2 pins and 2 wires with stripped ends, 2 sockes :pos and neg, and 2 screws... gnd, ant........

You have two soces... I assume you meant 2 sockets one socket is marked + and the other is marked -.
if this is the case this could be for the speaker field coil. I doubt its for a battery.

yep, but i don't know which one's which...

check the time on my last post!

As far as the speaker coil ,it can be connected to the plate of the last tube ONLY if it is a audio transformer that it is connected to. Some speakers were High Impeadance and could be connected directly to the plate of the audio final tube.

Red wire is + black wire is - in most cases or brown + then black - but not always the case. anyway

Time for dinner see you later. bye

PS do you have a multimeter, as this will help to find out if you have voltages and whether there AC or DC.

is it okay to turn the set on with no speaker attached?

If you cannot smell anything burned. you could but if there are bad caps you could cause more problems. Remove the rectifier tube first.
Before you turn the set on.
Doing this will prevent anything from smoking unless the filter caps are shorted and you could fry the power transformer. One thing you could try is to hook up a lightbulb in series with the radio. do you know what I mean ???

Your best bet at this point is to find a fellow in school that is into Ham Radio, or an instructor or an electrician to go over the points I brought up. OK
Because Electricty is nothing to fool with if you dont know what your doing, Its lethal

Thanks mr. resistance. You have been a great help. I owe you one....

I do not want a 3meg ohm resistor in series with my set (me) so i will be sure to follow safety rules.

Thanks again,
Robert

PS to answer your question. Can you turn on a radio that doesn't have the speaker attach , Only if its in working and safe order. If its not don't.

In order to find out if the speaker works you could do an Ohms test. The voice coil can read about 2 to 8 ohms. That means its functional, If the Electromagnet is measured it should have between 1200 and 7000 ohms. If you get no reading either you are using the wrong wires togather or there is an open. in which case Kaput.

By the way you could us a battery 1-1/2 volt and touch two of the leads accros the battery, if the speaker has any residual magnetism (which I doubt) you can hear a very faint click from the speaker. If you could put a magnet on the field coil then it would work better.