D'Amore engine'ring SMD IM-SG, Руководство пользователя

Страница: 34 / 48

34
Finding the Thiele / Small (T/S) parameters of
a driver - continued
Speaker Type f
S
Range
Subwoofer 10 - 70 Hz
Midbass 20 - 150 Hz
Midrange 30 - 900 Hz
6. Record the frequency where the impedance reaches its
maximum value within the range above. This Frequency
is the f
S
.
7. Record the impedance at f
S
. We will be calling this (R
E
+
R
ES
). We measured 38.3 ohms on our sample 12 inch
woofer.
8. Now we need to calculate R
C
with the following equation
On our sample we measured (R
ES
+ R
E
) to be 38.3
ohms, and we measured R
E
to be 3.4 ohms. Plug that
into the equation above and it looks like this:
= 11.26
9. Now we need to calculate R
O
with the following equation
X