8-Track Player Input?

T

thejball420

Guest
How can I input a signal from a portable cd player into a car 8-track
player? I've done this with a tape deck by putting in a blank tape and
routing the signal from the cd player into where the tape output would
normally be. From the 8-track player head, there are five wires: blue,
yellow, pink, orange, and black. Do I go in through these wires, and
if so, which specifically? If not, what can I do?
 
Whereas On 10 Oct 2003 22:35:47 -0700, thejball@hotmail.com
(thejball420) scribbled:
, I thus relpy:
How can I input a signal from a portable cd player into a car 8-track
player? I've done this with a tape deck by putting in a blank tape and
routing the signal from the cd player into where the tape output would
normally be. From the 8-track player head, there are five wires: blue,
yellow, pink, orange, and black. Do I go in through these wires, and
if so, which specifically? If not, what can I do?
Click to expand...
No, you have to find the preamp, and connect to its output, better
yet would be to disconnect the preamp..
--
Gary J. Tait . Email is at yahoo.com ; ID:classicsat
 
In article <48c1076f.0310102135.944421d@posting.google.com>,
thejball@hotmail.com mentioned...
How can I input a signal from a portable cd player into a car 8-track
player? I've done this with a tape deck by putting in a blank tape and
routing the signal from the cd player into where the tape output would
normally be. From the 8-track player head, there are five wires: blue,
yellow, pink, orange, and black. Do I go in through these wires, and
if so, which specifically? If not, what can I do?
Click to expand...
Those signals are very low level and are equalized for the tape heads,
so you would have to reverse equalize the CD signal, and reduce the
level greatly. I know there's reverse RIAA eq circuits, but I've
never seen the same for a tape deck.


--
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"Watson A.Name - Watt Sun" wrote:
In article <48c1076f.0310102135.944421d@posting.google.com>,
thejball@hotmail.com mentioned...
How can I input a signal from a portable cd player into a car 8-track
player? I've done this with a tape deck by putting in a blank tape and
routing the signal from the cd player into where the tape output would
normally be. From the 8-track player head, there are five wires: blue,
yellow, pink, orange, and black. Do I go in through these wires, and
if so, which specifically? If not, what can I do?

Those signals are very low level and are equalized for the tape heads,
so you would have to reverse equalize the CD signal, and reduce the
level greatly. I know there's reverse RIAA eq circuits, but I've
never seen the same for a tape deck.

--
Click to expand...
Tape decks use NAB equalization curves, and different curves for
different speeds. The common 8 track used 3.75 IPS, but speeds from
15/16 IPS to 60 IPS were used for different formats and applications.
The old GE transistor handbook, and some of the old National
Semiconductor application notes covered some of the different filters.


--


Michael A. Terrell
Central Florida
 
How can I input a signal from a portable cd player into a car 8-track
thejball420

...NAB equalization curves...
Michael A. Terrell
Click to expand...
This thing has likely got a headphone output
which is well past the equalized stage(s).
It will have lots of drive.
Connecting the shield (3rd conductor) of a 2-wire cable
to the low side of the 8-track's volume controls (likely ground)
and the 2 hot wires to the top sides of the pots
will connect you to the inputs of its amps.
 
JeffM wrote:
How can I input a signal from a portable cd player into a car 8-track
thejball420

...NAB equalization curves...
Michael A. Terrell

This thing has likely got a headphone output
which is well past the equalized stage(s).
It will have lots of drive.
Connecting the shield (3rd conductor) of a 2-wire cable
to the low side of the 8-track's volume controls (likely ground)
and the 2 hot wires to the top sides of the pots
will connect you to the inputs of its amps.
Click to expand...
I am well aware of this. I was pointing out that its not a simple
matter of attenuation the audio, then dumping it across a tape head.

As a matter of fact, I have known about the old "Across the volume
control trick" for about 40 years.
--


Michael A. Terrell
Central Florida
 
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