Introduction; Product Concept And Description - Cello SERAFIN Owner's Manual

INTRODUCTION...

Congratulations on choosing the Serafin Active Speakers. Your units have been
individually hand crafted from the finest parts and materials. The Serafins utilize
proprietary Cello circuitry that represents true state-of-the-art in audio electronics.
They are designed to perform to specifications for decades of musical enjoyment.
We want your Serafin Active Speakers to provide you with complete satisfaction.
Please read this manual carefully and care for your Serafins so that they will retain
their value, beauty and performance.
If you have any questions, contact your authorized Cello Designer or call the factory.
It is our wish to assist you in any way possible to facilitate your musical enjoyment.

Product Concept and Description

The Serafin is a compact active two-way speaker design. It offers natural tonal
balance, extended and smooth high frequency response, fast attack, deep bass and
wide dynamic range in a compact cabinet. Active speakers, by design, have the
benefit of a dedicated amplifier specifically designed for a particular driver and
frequency range. Since these amplifiers do not have to drive a passive crossover and
lengthy speaker cables there is minimal distortion and increased dynamic capability.
We designed the Serafin without compromise. These active bi-amplified speakers
incorporate Cello designed and built, fully discrete, push-pull, bi-amplification
circuitry that offers natural sound, lightning-fast response and exceptional reliability
reminiscent of the legendary Cello Performance Amplifiers. Its internal
bi-amplification uses two hand-made mono power amplifiers per speaker with all
discrete circuitry to deliver 90 watts to each woofer and 60 watts to each tweeter.
Fully discrete 18dB/octave, electronic crossover filters control woofer input below
38Hz and between woofer and tweeter at 2kHz.
Electronics of this caliber are coupled for the first time in an internal arrangement
with drivers, components, cabinet construction, wiring and quality control similar to
Cello's Grand Master Speakers. Custom made Litz wiring is used throughout. The 9"
woofer with its 4" voice coil has been specially designed to match the Serafin's rigid
and inert enclosure. The state-of-the-art Esotar tweeter is a 1" soft dome type
developed for the professional audio application. The cabinet is bass reflex design
with dual ducted ports for maximum efficiency and low frequency output in a small
package with low distortion. The shape of the enclosure is distinctive and functional,
minimizing cabinet diffraction and reflections.
The on-board amplification and crossover circuitry means that you only need to run
A/C power and line-level source signal to the speakers to get Cello performance.