JAMO SerieS 23 - Manual (Page 4)

Jamo A 7 6·7
The inner and outer qualities
Cabinets
All four models are made of solid, resonance-dead MDf board and
come in several finishes. except for the Sub 650, which features a
closed cabinet design, the other subs feature an integrated slotted
port cabinet. This allows for deeper tuning, superior power handling
and distinct sonic fidelity. Last but not least, the integrated port design
ensures great rigidity and stability in the cabinet design.
Amplifiers
All four Jamo amplifiers feature highly efficient bASH® amplifier tech-
nology, which combines the musical quality of class A/b amplifiers
with the efficiency of class D amplifiers. bASH® technology translates
into more efficient, yet more powerful amplification without the heat
associated with conventional amplifiers. All four subwoofers feature a
convenient on/auto/off switch and built-in limiter, which means that
sound reproduction will always be clean and as well defined as in-
tended.
Drivers
At the heart of these powerful subwoofers are new, long-throw super
drivers, capable of moving large amounts of air with incredible speed
and precise control. The 8in and 10in drivers feature Ø 38mm/1.5in
four-layer voice coil and the 12in driver from the Sub 650 is equipped
with a Ø 50mm/2in, four-layer voice coil. The heavy magnet systems
feature a vented pole piece in order to avoid over/under pressure
behind the dust cap (mechanical damping) when the cone is moving.
These units are an important part of the reason why the four subs all
offer top specifications and peak performance.
Test tones
To get the full benefit of your new subwoofer you have to adjust the
phase and optimise the sound in relation to the room in which you
place your speakers. To make this process easy we have placed two
different modulated tones in the download section of www.jamo.com.
Placement tone
This is a modulated tone that sweeps up and down in the lower
frequencies. This will help you find peaks and dips in your room. The
perfect spot for your subwoofer is where you hear the least peaks and
dips – or put another way, the flattest response.
Phase adjustment tone
This test tone will help you phase your sub correctly and hence create
the perfect integration between the subwoofer and your frontspeak-
ers. This adjustment is extremely important if you want harmonious,
well-balanced sound from your speakers.
for more detailed information go to www.jamo.com.