Let us
entertain
you
Subwoofer Line
Danish Sound Design
Download from Www.Somanuals.com. All Manuals Search And Download.
Jamo Sub SerieS 2·3
What is a subwoofer?
Look, listen and feel
A subwoofer is a dedicated bass loudspeaker made specifically to
reproduce sound at the lower end of the audio spectrum under 200
Hz. As their popularity has gained, subwoofers have become a natural
and essential part of the home cinema and stereo experience. Adding
a subwoofer to your sound system gives you a richer, more faithful
audio representation of movies, TV and music. The high-quality sub-
woofers of today are always active with their own integrated amplifier
and power supply.
Sound is a three-dimensional experience meant to stimulate more
than just your ears. To illustrate what we mean, we have focused on
three senses.
Look
because it is invisible, sound’s central role in the complete film experi-
ence is often overlooked. but it is without doubt sound that completes
the picture. The rise of digital sound formats such as DTS® and Dolby
Digital® and a quality standard like THX® have taken film into a new
époque. Although film is a visual media, it is widely recognized today
that sound counts for an increasingly significant part of the total
experience. if you are in doubt, just try muting your TV next time you
watch the latest blockbuster movie.
The difference is in the deep
it is a well-known fact that as much as 90% of an iceberg is hidden
beneath the surface. when it comes to home theatre systems, people
often settle for solutions that only show the tip of the audio iceberg, all
too often missing the difference the deep makes.
Listen
A complete Jamo audio solution doesn’t leave you looking for more,
but rather gives you an experience for all your senses. You won’t have
to use your imagination to compensate for the hidden elements of
your sound experience: Jamo subwoofers raise the audio iceberg to
the surface.
To hear the difference between a sound system with a subwoofer and
one without, just listen. one with a well-constructed subwoofer will
give you full, rich and impressive sound, as near to real life as possible,
while one without will leave you wanting more. but adding a subwoof-
er to your system won’t work unless it can be adjusted to blend seam-
lessly into the sound of the existing speakers.
No short cuts
Feel
A subwoofer must be able to handle extreme power demands and
peak loads. Designing a serious subwoofer is therefore a time-
consuming, complicated task, involving expensive materials and
skilled engineers. by designing a dedicated line of audiophile, high-
quality subwoofers, Jamo wants to demonstrate the difference a “real”
subwoofer can make to your sound experience. our goal is to develop
subwoofers that really fill out the wall of sound.
Sound consists of a spectrum of tones with varying frequencies. Your
ear not only hears the lowest frequencies, your body feels the vibra-
tions of these deep sound waves. if amplified and sent out of the sub-
woofer properly, that physical gut pumping feeling from live concerts
and cinemas can be replicated in your living room. Close your eyes,
cover your ears and feel the difference.
The difference is in the deep
Download from Www.Somanuals.com. All Manuals Search And Download.
Jamo Sub SerieS 4·5
Find the right subwoofer
Jamo’s subwoofer line-up is comprised of more than just highly versa-
tile, quality products; each member of the range can be combined
with an existing Jamo sound system or another quality brand. our
subs are specially designed to broaden your experience of low
frequencies, from explosions and earthquakes to subtle musical
nuances and dynamic peaks.
A number of things must be considered when matching a speaker
system and a subwoofer: price, musical taste and preferences, and the
acoustic characteristics of the speakers and the room. Jamo subwoof-
ers therefore feature a wide variety of controls such as variable phase
control and variable cut of frequency control. Starting with our Sub
550 and upwards, our subwoofers feature boundary gain compensa-
tion (bGC), which filters excessive bass, giving you a flatter, more
accurate bass response in the room. bGC gives you greater flexibility
when choosing your favourite listening position in the room and the
subs’location.
SUB 250
SUB 300
SUB 550
SUB 650
The Sub 250 is the most compact subwoofer in the line-up. An 8in
woofer unit is housed in the Sub 250’s unique slotted port cabinet. it
also features a powerful bASH® amplifier capable of delivering 250w
of peak power. relative to its size and price, the Sub 250 delivers out-
standing performance and is capable of producing bass frequencies
down to 30 Hz.
The Sub 300 is equipped with a powerful 10in long-throw woofer unit
and an amplifier capable of delivering 300w of peak power. The cabi-
net is based on the same design principle as the Sub 250. The power-
ful amplifier, increased cabinet size and unique design make this sub-
woofer capable of delivering both a higher sound pressure level (SPL)
and a flat frequency response, down to 28 Hz. The Sub 300 is equipped
with a front-mounted volume control for easy adjustment.
The Sub 550 is a powerful step-up in Jamo’s subwoofer line-up. This
powerful sub combines a hard working 10in long-throw woofer unit
and an amplifier capable of delivering an awesome 550w of peak
power. it is all nicely packed together in a slotted port cabinet built on
the same principles as the Sub 300. with frequencies as low as 26 Hz,
the Sub 550 reaches new dimensions in your music and movie collec-
tions. And like the Sub 300, this model is also equipped with a front-
mounted volume control for easy adjustment.
The Sub 650 is intended for high-performance speaker systems.
unique in Jamo’s subwoofer line, the Sub 650 features a powerful
front-firing design with an explosive 12in long-throw woofer.
The Sub 650 is placed in an entirely closed cabinet, freeing it of any
port noise. Sub 650 gives you extremely precise and tightly controlled
sound reproduction. it is ideal for the demanding audiophile or musi-
cal connoisseur who wants to recreate the dynamic feeling of a live
concert or cinema visit. with an impressive 650w of peak power and a
frequency range from 24 Hz to 150 Hz the Sub 650 is “The top of
subs”.
Download from Www.Somanuals.com. All Manuals Search And Download.
Jamo A 7 6·7
The inner and outer qualities
Test tones
Cabinets
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.
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.
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.
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.
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.
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.
Download from Www.Somanuals.com. All Manuals Search And Download.
|