Specifications

LFT-8b Impedance Data

The impedance curves shown below are for the woofer and mid-range/tweeter

inputs measured individually. The woofer curve shows an impedance

minimum at 75Hz (10 ohms) and a steady rise above 100 Hz due to series

inductance. The mid-range and tweeter section impedance curves trends down

through the frequency range. Without the crossover in place, both the mid-

range and tweeter panels have flat impedance curves (the mid-range impedance

is 11 ohms and the tweeter impedance is 7.5 ohms).

With the woofer section in parallel with the mid-range/tweeter section, the

impedance curve becomes essentially flat with a minimum of about 7 ohms

occurring around 75 Hz and a maximum of 20 ohms at 50 kHz. The 20-ohm

peak is with the tweeter in its low output position. When the tweeter level is

set to the high position, its impedance will drop to about 10 ohms at very high

frequencies. The speaker should be considered as an “easy” 8-ohm load

having only very small reactive components.

Technical

information