I am finally coming back around to this, in the absence of other stuff
to look into... So, I read, reread, and read some more about doing the
cassette stuff. Apparently, I need a cable :). Thanks for the detailed
pdf. I have a scenario and some questions based on the reading.
I have a Califone 3132AV Cassette Recorder. It's a classroom model -
which means it's LOUD (as in massively amplified speaker output) and it
has 4, 1/4" headphone jacks. Related to the TRS-80 5 pin din to whatever
cable, it looks like I will need 5 pin male din in the 180 configuration
on the m100 side and three jacks (3.5mm, 2.5mm, and 1/4") on the
Califone side which has a 3.5mm mic input, 2.5mm rem input, 1/4"
headphone output. But... apparently, it's not wise (or useable) to plug
in the 3.5mm line out (aux) coming from the m100, cuz that's at line
level (1 volt stuff) vs the mic which is expecting much smaller
voltages... So, I need a pad?/attenuator to tamp down those high
voltages. If I read your email correctly, this is the 2 resistors and a
capacitor circuit. How do I know what size to make them?
Here is what I think I need (hopefully, fixed font will display properly):
/- 3.5mm mono jack -> Attenuator
Circuit -> MIC \
M100 <- 5 pin 180 Male DIN <- -- 2.5mm mono jack ->
REM - Califone 3132 AV
\- 1/4" mono headphone jack -> HP/EXT
SPKR /
If this is correct. I just need some assist on that Attenuator Circuit...
Thanks,
Will
On 10/1/22 4:14 PM, you got me wrote:
I make my own cables.
Including ones that allow you to select if the output is going to a
MIC or LINE/AUX. It includes an impedance matching circuit consisting
of two resistors and a capacitor. This effectively attenuates the
signal to that of a 'condenser mic' when needed.
This advanced cable also has an audio isolation transformer which
helps to eliminate noise between the m100 and the recording device.
I've only made three that have a Bluetooth connection so that you can
transfer files to the m100. Recording from the m100 to a smart phone
can be a problem depending on the phone. The phone must have the
capability to record via a Bluetooth microphone.
------------------------------------------------------------------------
*From:* M100 <[email protected]> on behalf of Will
Senn <[email protected]>
*Sent:* Saturday, October 1, 2022 9:06 PM
*To:* [email protected] <[email protected]>
*Subject:* Re: [M100] Will any old Cassette recorder work?
Nice. Did you make your own cable or buy a premade one?
Sent from my iPhone
On Oct 1, 2022, at 4:01 PM, you got me <[email protected]> wrote:
just about any audio recording device will work. However.....
some common problems are associated with recording a program (output
of the computer). Ideally, the recorder should have a LINE INPUT for
this. An AUX INPUT will usually do, but there will be an impedance
mismatch when using a MIC INPUT. The LINE and AUX are designed for
really strong signals. The MIC input is designed for weak, or
unamplified signals. This is like taking a watermelon and trying to
fit it into a shot glass. You might get lucky if your recording
device allows you to manually set the recording level. Some units do
this via the volume switch (effectively it serves two purposes). But
some units don't have that feature.
I have been able to do program recordings and playbacks using mini
cassettes, mini discs, a Tascam portable digital recorder, etc.
------------------------------------------------------------------------
*From:* M100 <[email protected]> on behalf of Will
Senn <[email protected]>
*Sent:* Saturday, October 1, 2022 8:21 PM
*To:* [email protected] <[email protected]>
*Subject:* [M100] Will any old Cassette recorder work?
Has anyone recently done tape stuff? What's your setup? I have a
Califone 3230 AV recorder with motor control, aux etc. Will that
work, or would I need a Radio Shack branded setup?
Thanks,
Will
