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ryston challenges you to rethink your notion of active
B
loudspeakers. To most, the phrase means a small
desktop loudspeaker with a weak amplier built in. Or, more
generously, it could mean a studio monitor with an amp built
into the enclosure.
When we thought of the notion of an active loudspeaker,
we sought to preserve the integrity of the loudspeaker
drives and enclosure and the legendary performance of
our ampliers but activate the crossover beyond circuits
responsible only for dividing the audio spectrum among a
set of drivers.
The loudspeaker crossover presents an ideal opportunity
to neutralize both the on-axis and o-axis response of
the system. Engineers are inherently limited to how many
corrections they can make by building passive crossovers
with large components. By moving the crossover out of the
speaker and in front of the amplier and also into the digital
domain, we gain virtually unlimited ability to linearize system
performance.
Traditional crossovers are also lossy. No matter how
well designed, they absorb and reect energy meant for
the drivers. An active loudspeaker is placed before the
ampliers, so the amps are directly coupled to the drivers
for best performance.
Instead of compromising performance by building
ampliers into the speakers, Bryston has preserved the
ability to choose your own high quality outboard ampliers
for each of three driver sections per speaker.
For listeners, this means a Bryston Active Loudspeaker
System is the clearest window into your music collection
yet. Instruments and voices hang in space. Singers appear
right before you. You are transported to the symphony or
immersed in the crowd at a rock concert.
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Compared to our passive loudspeakers
Bryston’s Active Loudspeakers come even closer to
the ideal power response without sacrices to on-axis
response. Power response is the weighted measure of
a loudspeaker’s total energy. It is not sucient to simply
design for at on-axis response. By ensuring
that power response tracks the more
narrowly dened listening window closely, we
can ensure that the room’s contribution to
the nal sound is benecial, not destructive.
How then do
we explain the
gap between
Frequency Response or Sound Power
Bryston evaluates response based on
two measurements which are much more
indicative of real performance compared
to basic on-axis tests. Our listening window
response measurement includes an on-axis
frequency response plot but also a series of
measurements taken from a +/- 15 degree
window in front of the loudspeaker. This gives you a true
indication of how the loudspeaker sounds when you’re
seated at many realistic positions in front of it.
We also measure sound power which is a weighted average
measured
performance
and sound
quality?
of three hundred measurements taken from points on the
sphere surrounding the speaker. Sound power tells us
about the total energy dispersion of the entire loudspeaker
system. This is information is key in predicting how the
reected sound will behave once it is placed
in a real room. Point source loudspeakers
should feature a gradual downward tapered
shape.
Instead of only trying to obtain at response,
we study the relationship between listening
window and sound power to ensure that the
sound power doesn’t have any signicant
deviations that would indicate unrealistic
reected sound.
The Active Advantage
Bryston’s Active Loudspeakers leverage
the incredible power of our DSP engine to
enable our engineers to optimize both listening window and
sound power at once. These are often competing ideals.
Now listeners can have truly neutral in-room response
across the whole spectrum.
BAX-1 Active DSP Crossover
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Power Up
ince Bryston Active Loudspeakers have no internal
S
passive crossover components, each driver is directly
coupled to an amplier channel so the ampliers can exert
remarkable control over even the smallest movements of
the loudspeaker elements.
Each Bryston Active Loudspeaker is a three-way model,
so a total of 6 amplier channels are required. We have
developed two amplier models with channels cleverly
arranged to support the dynamic range requirements
between low, midrange and high frequency drivers.
The 24B Cubed is a 6 channel unit featuring two 300 watt
channels for the bass sections and four 75 watt channels
for midrange and high frequencies. Such a model is ideal for
21B3
Channels: 3 THD+N (full bandwidth): ≤0.005% Midrange Ch. (Watts) 1x 300
Height x Depth (in.):
(cm.):
8.1 x 18.4
20.6 x 47
those who wish to retain the compact nature of a single-box
amp solution similar to a traditional stereo setup.
Choose a pair of 21B Cubed ampliers for more ambitious
playback volume and/or larger rooms. Each of the ‘three
channel monoblocks’ includes a single 600 watt channel
for the bass section plus two 300 watt channels for the
midrange and high frequency drivers.
Naturally, the loudspeakers may also be powered by
arranging your own selection of mono, two channel and
multi-channel Bryston ampliers. Choose any six channels
from our broad range of models and enjoy tremendous
exibility as further upgrades are desired.
Weight (lb | kg): 91 | 42 Low Freq. Ch. (Watts) 1x 600
Noise (full bandwidth): ≤-119 dB High Freq. Ch. (Watts) 1x 300
24B3
Channels: 6 THD+N (full bandwidth): ≤0.005% Midrange Ch. (Watts) 2x 75
Height x Depth (in.):
(cm.):
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4.5 x 19
11.5 x 48
Noise (full bandwidth): ≤-115 dB High Freq. Ch. (Watts) 2x 75
Weight (lb | kg): 55 | 25 Low Freq. Ch. (Watts) 2x 300
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Choose your Speakers
ith three models to choose from, you are certain
W
to nd a Bryston Active Loudspeaker model that
satises not only your quest for the best possible sound,
but also a perfect size for your room.
The agship Model T Active is a full range reference grade
loudspeaker that can reproduce the full dynamic envelope
of a symphony orchestra while never loosing its keen sense
of nuance and detail.
The Middle T features all the spectacular realism of the
larger Model T yet in a more compact oorstanding prole.
The Mini T changes everything you know about a
Model T Active Middle T Active Mini T Active
Frequency
Response
(± 3dB)
Sensitivity
(2.83V, 1m, anechoic)
Nominal Impedance 4 Ohms 4 Ohms 4 Ohms
Crossover 3-Way 3-Way 3-Way
No. Drivers 3-Bass, 2-Midrange,
Size
(H x W x D)
Weight
(unpacked)
Min/Max
Rec. Power
Max SPL
@ 1m
25Hz - 20kHz 33Hz - 22kHz 33Hz - 20kHz
89dB 88dB 86dB
2-Tweeter
52.5 x 10.5 x 16.5 in.
133.4 x 26.7 x 41.9 cm.
107 lbs.
48.5 kgs.
10 - 500 Watts RMS 10 - 250 Watts RMS 10 - 250 Watts RMS
118dB 112dB 112dB
bookshelf or stand-mounted monitor. Our smallest Active
Loudspeaker boasts incredible bandwidth and dynamic
range yet occupies a fraction of the visual space required
by the oorstanding models. Like the ampliers, each is
guaranteed for 20 years, so you can be condent in your
purchase.
Any of these three models can also be purchased as a
passive model (therefore including an internal crossover
and only requiring a traditional 2 channel amplier) and can
be upgraded in the future to a full Active system for simply
the cost of the BAX-1 crossover plus the extra amplier
channels.*
* True of loudspeakers produced in 2018 or beyond
2-Bass, 1-Midrange,
1-Tweeter
39.5 x 10.5 x 16.5 in.
100 x 26.7 x 41.9 cm.
81 lbs.
37 kgs.
1-Bass, 1-Midrange,
1-Tweeter
22.5 x 10.5 x 10 in.
57.1 x 26.7 x 25 cm.
42 lbs.
19 kgs.
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Get Connected
pgrading to a Bryston Active system is easier than you
U
might expect. Our system allows you to use whichever
preamplier and source components you desire. Simply
connect your preamp’s outputs to the inputs of the BAX-1
crossover. For the each of the left and right speakers, the
BAX-1 creates three signals—Low, Mid, and High. These
signals are then passed on to the appropriate amplier
channels.
The BAX-1 permanently operates at 96kHz / 24 bit resolution
maximizing the transparency of the expertly engineered
converters. Even analog source components are rendered
with startling realism and naturalness.
Once you have carefully placed the loudspeakers at
their optimum positions in the room, through acoustic
measurement or by ear, you may elect to equalize the bass
response to overcome tonal response irregularities due to
the room. From the sweet spot, use a tablet, mobile phone or
laptop to adjust the bass response with our web-based user
interface.
TRIGGER
HIGH LOWMID RIGHT
WARNING
Do not connect positive
terminals to negative
terminals. Do not
connect any speaker
terminals to ground.
Risk of hazardous
energy. Make proper
speaker connections.
Use class 2 wiring.
AVERTISSEMENT
Ne connectez pas les
bornes positives aux
bornes négatives. Ne
branchez aucun
terminal d'enceinte sur
le sol. Risque d'énergie
dangereuse. Effectuez
les connexions
appropriées des
ACTIVE CROSS-OVER
TRIGGER
OUT
OUT
HIGH LOWMIDIN
LEFTIN
BAX1
TRIGGER IN
STATUS
ETHERNETUSBRS232
AC IN
MADE IN
Peterborough
FABRIQUE AU
Ontario
CANADA
677 Neal Drive | Peterborough, Ontario K9J 7Y4 | Canada
ph. 1-705-742-5325 | fx. 1-705-742-0882 | contact@bryston.com
www.bryston.com
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