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The Audio Control Subsystem takes an ordinary
RCA-level mono audio signal, bandpass filters it between 2kHz and 40kHz,
and provides variable gain (up to +36dB). It is powered by the +/-15v Power Supply.
"Price to us" refers to parts on hand that were donated to us, salvaged
from old equipment or that were not purchased specifically for this
project. "Estimated actual price" refers to the typical commercial cost.
| Part Description |
Quantity |
Price to us |
Estimated actual price |
Total cost |
| Hammond die cast metal case |
1 |
$0.00 |
$8.00 |
$8.00 |
| LF356N audio op-amps |
3 |
$0.00 |
$1.00 |
$3.00 |
| 8-pin IC sockets |
3 |
$0.00 |
$0.50 |
$1.50 |
| 100k Audio-taper potentiometer |
1 |
$0.00 |
$1.50 |
$1.50 |
| 2-pin PC mount screw terminals |
5 |
5/ $1.50 |
5/ $1.50 |
$1.50 |
| PC board |
1 |
$2.00 |
$2.00 |
$2.00 |
| Resistors |
b |
c |
d |
e |
| a |
b |
c |
d |
e |
| a |
b |
c |
d |
e |
TOTAL: |
$. |
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