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Phase.
The Vulcan has a phase reversal switch which allows partial
cancellation of the frequencies around the crossover point between
the two systems. The two settings will be clearly different. The
difference is demonstrated in timing and if set incorrectly the bass will
miss time with the music. In order to gain the correct setting listen to
each phase position and decide which offers the most prominent
clean and tight bass response.
Phase position 1 (left) positive/ forward cone excursion.
Phase position 2 (right) positive/ reverse cone excursion.
Remember, if it sounds correct to you then it probably is.
Frequency Control
The Vulcan carries a unique frequency control designed for ease of
use. The frequencies marked from 30Hz to 230Hz also carry Hi Fi,
AV and FULL RANGE.
The Hi-Fi and AV sections can be used as a guideline for correct set
up as the lower frequencies are ideal for improving the dynamic
range required for two channel hi-fi.
The AV section covers a broader frequency range ideal for sound
effects and higher impact volume. The FULL RANGE setting
(clockwise until a click is heard) by-passes the Vulcan’s crossover.
Most processors have a built in filter to optimise performance of all of
the AV Speakers. This allows the user to adjust the roll off point
through your AV processor to the suggested level.
High Level Gain
The high level gain is the main volume control when using the high
level input (Hi-Fi) This will not operate whilst using low level input.
Low Level Gain
The low level gain is the main volume when using the low level input.
(AV) This will not operate whilst using high level input.
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