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Subwoofer line

Danish Sound Design

 Jamo SUB SERIES 2·3

What is a subwoofer? Look, listen and feel

A subwoofer is a dedicated bass loudspeaker made specifically to Sound is a three-dimensional experience meant to stimulate more
­reproduce sound at the lower end of the audio spectrum under 200 than just your ears. To illustrate what we mean, we have focused on
Hz. As their popularity has gained, subwoofers have become a natural three senses.
and essential part of the home cinema and stereo experience. Adding
a subwoofer to your sound system gives you a richer, more faithful Look
­audio representation of movies, TV and music. The high-quality sub- Because it is invisible, sound’s central role in the complete film experi-
woofers of today are always active with their own integrated amplifier ence is often overlooked. But it is without doubt sound that completes
and power supply. 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
The difference is in the deep that sound counts for an increasingly significant part of the total
It is a well-known fact that as much as 90% of an iceberg is hidden ­experience. If you are in doubt, just try muting your TV next time you
beneath the surface. When it comes to home theatre systems, people watch the latest blockbuster movie.
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, To hear the difference between a sound system with a subwoofer and
but rather gives you an experience for all your senses. You won’t have one without, just listen. One with a well-constructed subwoofer will
to use your imagination to compensate for the hidden elements of give you full, rich and impressive sound, as near to real life as possible,
your sound experience: Jamo subwoofers raise the audio iceberg to while one without will leave you wanting more. But adding a subwoof-
the surface. 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 Sound consists of a spectrum of tones with varying frequencies. Your
peak loads. Designing a serious subwoofer is therefore a time- ear not only hears the lowest frequencies, your body feels the vibra-
­consuming, complicated task, involving expensive materials and tions of these deep sound waves. If amplified and sent out of the sub-
skilled engineers. By designing a dedicated line of audiophile, high- woofer properly, that physical gut pumping feeling from live concerts
quality subwoofers, Jamo wants to demonstrate the difference a “real” and cinemas can be replicated in your living room. Close your eyes,
subwoofer can make to your sound experience. Our goal is to develop cover your ears and feel the difference.
subwoofers that really fill out the wall of sound.

The difference is in the deep

 Jamo SUB SERIES 4·5

Find the right subwoofer

Jamo’s subwoofer line-up is comprised of more than just highly versa- A number of things must be considered when matching a speaker
tile, quality products; each member of the range can be combined ­system and a subwoofer: price, musical taste and preferences, and the
with an existing Jamo sound system or another quality brand. Our acoustic characteristics of the speakers and the room. Jamo subwoof-
subs are specially designed to broaden your experience of low ers therefore feature a wide variety of controls such as variable phase
­frequencies, from explosions and earthquakes to subtle musical control and variable cut of frequency control. Starting with our SUB
­nuances and dynamic peaks. 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 The SUB 300 is equipped with a powerful 10in long-throw woofer unit The SUB 550 is a powerful step-up in Jamo’s subwoofer line-up. This The SUB 650 is intended for high-performance speaker systems.
woofer unit is housed in the SUB 250’s unique slotted port cabinet. It and an amplifier capable of delivering 300W of peak power. The cabi- powerful sub combines a hard working 10in long-throw woofer unit Unique in Jamo’s subwoofer line, the SUB 650 features a powerful
also features a powerful BASH® amplifier capable of delivering 250W net is based on the same design principle as the SUB 250. The power- and an amplifier capable of delivering an awesome 550W of peak front-firing design with an explosive 12in long-throw woofer.
of peak power. Relative to its size and price, the SUB 250 delivers out- ful amplifier, increased cabinet size and unique design make this sub- power. It is all nicely packed together in a slotted port cabinet built on The SUB 650 is placed in an entirely closed cabinet, freeing it of any
standing performance and is capable of producing bass frequencies woofer capable of delivering both a higher sound pressure level (SPL) the same principles as the SUB 300. With frequencies as low as 26 Hz, port noise. SUB 650 gives you extremely precise and tightly controlled
down to 30 Hz. and a flat frequency response, down to 28 Hz. The SUB 300 is equipped the SUB 550 reaches new dimensions in your music and movie collec- sound reproduction. It is ideal for the demanding audiophile or musi-
with a front-mounted volume control for easy adjustment. tions. And like the SUB 300, this model is also equipped with a front- cal connoisseur who wants to recreate the dynamic feeling of a live
mounted volume control for easy adjustment. 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”.
 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
All four models are made of solid, resonance-dead MDF board and phase and optimise the sound in relation to the room in which you
come in several finishes. Except for the SUB 650, which features a place your speakers. To make this process easy we have placed two
closed cabinet design, the other subs feature an integrated slotted different modulated tones in the download section of ­­www.jamo.com.
port cabinet. This allows for deeper tuning, superior power handling
and distinct sonic fidelity. Last but not least, the integrated port design Placement tone
ensures great rigidity and stability in the cabinet design. 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
Amplifiers perfect spot for your subwoofer is where you hear the least peaks and
All four Jamo amplifiers feature highly efficient BASH® amplifier tech- dips – or put another way, the flattest response.
nology, which combines the musical quality of class A/B amplifiers
with the efficiency of class D amplifiers. BASH® technology translates Phase adjustment tone
into more efficient, yet more powerful amplification without the heat This test tone will help you phase your sub correctly and hence create
associated with conventional amplifiers. All four subwoofers feature a the perfect integration between the subwoofer and your frontspeak-
convenient on/auto/off switch and built-in limiter, which means that ers. This adjustment is extremely important if you want harmonious,
sound reproduction will always be clean and as well defined as in­ well-balanced sound from your speakers.
tended.
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.
 SUB 250 SUB 300 SUB 550 SUB 650

Specifications:
Type SUB 250 SUB 300 SUB 550 SUB 650
System Slotted Port Cabinet Slotted Port Cabinet Slotted Port Cabinet Closed Cabinet
Woofer [in / mm] 8 / 203 10 / 254 10 / 254 12 / 305
Rated Output [W] 250 300 550 650
Frequency range [Hz] 30-150 28-150 26-150 24-150
Impedance [Ohm] 22k 22k 22k 22k
12 V trigger No No No Yes
Phase Variable Variable Variable Variable
Cut off frequency [Hz] 40-150 40-150 40-150 40-150
Limiter Yes Yes Yes Yes
Boundary Gain. Comp. No No Switch Variable
Dimension HxWxD [mm / in] 325x267x469 378x310x507 396x325x530 419x400x418
12.8x10.5x18.5 14.9x12.2x20.0 15.6x12.8x20.9 16.5x15.7x16.5
Weight [kg / lb] 13 / 28.7 18.9 / 41.7 21.6 / 47.6 22.2 / 48.9
Finish Black Ash, Dark Apple, Black Ash, Dark Apple, Black Ash, Dark Apple, Black Ash, Dark Apple,
Golden Maple, Brushed Alu Golden Maple Golden Maple Golden Maple

Finish Danish Sound Design

Black Ash Dark Apple Golden Maple Brushed Alu

www.jamo.com