Anthony Gallo TR-3 Subwoofer - Manual (Page 4)

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TR-3 Subwoofer Description
Why would you need bass boost? Every loudspeaker undergoes what is known as roll-off. Somewhere
inside the window of its frequency response, every driver’s output begins to fade. It no longer plays as
loudly as it did in the ‘power band’ of its range. This is true also for all woofers regardless of their size.
The audible onset of roll-off is simply a function of room size and proximity. The larger the room, the
sooner roll-off becomes audible. The woofer no longer benefits from the acoustic gain of boundary
reinforcement and can’t reproduce the lowest bass notes as loudly as the higher ones.The further the
sub is placed from wall or boundary, the sooner roll off becomes audible. These are basic guidelines
and may not apply to your room layout.
The TR-3 offers 0, +3 and +6dB bass equalization settings to become uniquely adaptable to room size.
This depends on the placement of the TR-3 in the room, and it is up to your personal preference where
the TR-3 is placed. A small room probably won’t require any boost. A large one might benefit from full
boost. A medium one might prefer medium boost. You’re in control. Also, you no longer need to update
your subwoofer when it comes time to move into larger quarters. Simply change the EQ setting. Do you
prefer slightly increased bass for Home Theater but flat bass for music? A flick of the switch let’s you
have it both ways.
The TR-3 can play loudly even in larger spaces. Can it be subtle and musical though? Yes. The TR-3 is
no mere boom box. Remember the cylindrical enclosure – it’s not a box at all. How about boom? The
TR-3 does not suffer from the common cabinet resonances of rectangular boxes. That’s why it doesn’t
exhibit the usual smear, fuzz and uncontrolled muddiness of inferior subwoofers. What’s more, we use a
sealed acoustic suspension design without a port. The air trapped inside the cylinder becomes the
restoring force that prevents woofer overshoot and maximizes self-damping. The TR-3 suffers neither
port noise chuffing nor the driver ringing endemic to ported alignments.
In conclusion, the TR-3 combines air suspension; along with our patented S2 technology, a superior
long-throw aluminum cone driver; a minimum mass enclosure of superior rigidity; a high-current 300-
watt Class A/B amplifier; powerful bass equalization; and a massive motor system of overbuilt magnet
and voice coil with a strong spider and high-excursion butyl rubber roll surround.
TR-3 Subwoofer Description
The first thing you’ll undoubtedly notice about your new TR-3 is the round enclosure. Why round? The
answer is simple. A sphere is one of the strongest geometric shapes known to man. That’s why we
employ spheres for our Nucleus ® speakers. Our subwoofers utilize cylindrical enclosures because we
require larger internal volumes and a flat panel for the controls and amplifier heatsinks. Still, we avail
ourselves of the superior strength that round enclosures offer.
Why is cabinet strength so important? Consider the enormous internal air pressures generated by the
woofer’s rear wave. As loud as the TR-3 plays into the room, it plays even louder internally. That’s
because the cubic volume of the enclosure is a lot smaller than your room. Simply put, high-
performance subwoofers need to move a lot of air. That demand puts a lot of strain on the cabinet
especially if you want to keep it small to avoid designing a visual eyesore.
Small cabinet plus superior strength equals cylindrical shape. Naturally, we also could have made the
cabinet square or rectangular. Most other manufacturers do. To obtain a similar strength ratio to the TR-
3’s cylinder, this would have required far thicker walls. Thicker walls are not only more expensive, they
also equate to more mass. More mass means higher energy storage. Higher energy storage muddies
the sound and compromises transient response. Additionally, square and rectangular enclosures suffer
from seams and parallel walls. Parallel walls create internal resonances that interfere with the music
signal. In the end, cylindrical enclosures for subwoofers are best.
Our TR-3 subwoofer is small and housed in a chassis of superior strength yet minimal mass. Can it play
loudly? Absolutely. We use a superior long-throw custom 10” Aluminum Cone woofer and a high-current
300-watt amplifier with up to 6dB of bass boost.
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