Eltax Liberty 5+ modification part2
Posted 10th February 2015 at 09:16 PM by Maciej Czerwinski
All measurements done with Panasonic WM-61A microphone with Eric Wallin preamplifier and E-MU0202. Single driver frequency response without any crossover. The microphone is located at a distance of 1 meter from the driver on its main axis.
Vifa 3075 dome tweeter:
Vifa TC 3520 woofer:
Vestra PW-250-2154 woofer with it's crossover, microphone located 10 cm from the driver:
The complete speaker after modification.
Measurements done at my usual listening spot, 2.5 m from the speaker, microphone positioned 50 cm closer, farther, higher and lower around the spot. Obtained frequency response curves are strongly smoothed, because changing the position of the microphone produces a large change in the jags of the curve, and I wanted to show invariant features of the speaker frequency response:
It is pretty flat, and the bass is very nice now.
Vifa 3075 dome tweeter:
Vifa TC 3520 woofer:
Vestra PW-250-2154 woofer with it's crossover, microphone located 10 cm from the driver:
The complete speaker after modification.
Measurements done at my usual listening spot, 2.5 m from the speaker, microphone positioned 50 cm closer, farther, higher and lower around the spot. Obtained frequency response curves are strongly smoothed, because changing the position of the microphone produces a large change in the jags of the curve, and I wanted to show invariant features of the speaker frequency response:
It is pretty flat, and the bass is very nice now.
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