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Directly Connected Synchronous Serial Filter
Most speakers have a crossover filter
divided into different sections:
- eg one for bass and one for treble,
each section works in principle
separately.

The treble section isolates the treble
drive unit from bass tones, and the bass
unit isolated from treble signal. However,
the speaker drive units are not linear at
all but work also as microphones that
send a rather unpredictable signal
back to the crossover. Musical
precision and information will then
then be lost.

With our Synchronous Serial Filter
the bass and treble section sits
together. We do not claim
that the problem above is completely
solved. But the crossover is designed to
handle these "error signals" from the speaker elements in the best possible way.

The principle is a bit "self-adjusting" so that the interaction between bass and treble throughout
the time will be right - not only in theory but also in practice and at different
levels and transients!

We call the principle Direct Synchronous Series Filter and the strength is just
the synchronization between bass and treble and that the music sounds more
genuine - You could say that the focus is on "Now!".

With "direct connection" we mean that the input signal (plus and minus) is connected directly to
treble drive unit plus and bass drive unit minus. Secondly, the signal then goes from the speaker
drive units to the crossover, that is isolated outside the active cabinet.


Adress: Aschebergsgatan 15 441 27 Göteborg Telefon:031-135100 Mejl: anders@tonlaget.se