DIY tape echo is possible for me!

[panasonic_youth]

i have the playskool 'my first tape recorder' tape recorder, and i was just going to do the whole echo thing the really really tedious way(mounting and wiring individual play heads) when i stumbled upon this: http://moosapotamus.com/Echo-Matic_a.jpg and http://moosapotamus.com/Echo-Matic_b.jpg  !  if someone would tell me what the offboard connections are, i could probably do this. i just want to make sure im straight on this, the echo-matic DOES use a tape deck, does it not?

[panasonic_youth]

also, i dont quite understand the need for a 3 headed tape deck in that circuit. as far as i can tell it reads: guitar goes into amplifier stage, which goes out to recorder input.  recorder output goes to another amplifier.  thats very simplistic, i know, but doesnt that just require one playback head?  it seems to me that it does, but i may just be excited right now.


EDIT

one last thing, when it says: in from tape output, does it mean the actual head, or the entire unit's output (or what the speaker leads would be, in my case) ?

[Maneco]

because the three heads are: 1) erase head 2) record head 3) playback head...in a normal cassette deck,the record and playback head is the same,the record switch inverts the function of it...

[panasonic_youth]

ahh, alright, so i will have to add the aditional play head?

[Khas Evets]

For me, not having control over delay time is a minus. Do you have control over the speed of the tape deck?

[panasonic_youth]

most tape decks have a trimpot for speed, but you could install a pot as a variable resistor right to the motor. so yea, you have control.

[mathflan]

Hi, I have A JVC KD-A2 Stereo cassette deck.
On the manual it's marked that there:

2 heads CRONOIS head for recording/playback and
2 gap ferrite head for erasure.

Do you think it's a 3 head tape desk??
CAn i use this for the Echomatic??