Bay Audio JAM Center Brochure

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JAM Theater

JAM Monitor and matching theater components

Monitor Description

The JAM Monitor is a versatile full-range

bookshelf system that combines the detail

and clarity of an audiophile speaker, with

the impact of a theater speaker. It’s sized to

fit in any entertainment cabinet.

2-Channel Systems

The JAM Monitors are perfect for use in

2-channel systems. They fill a 5,000 ft3room

with concert level sound.

Theater Systems

The JAM Monitor is the basis for a high-

performance theater system. Use the JAM

Center and JAM Subwoofers. For the

surround channel, choose the BeBop or

Floating Grille In-Walls for surround. All units

are sonically matched within ±2dB for seam-

less multi-channel playback.

Product Features

• Reverberance control reduces echoes

in lively rooms.

• Presence control reduces throw for

near-field listening.

• Boundary control reduces midbass

“bloat” caused by bookshelf or

wall placement.

• Constrained layer baffle greatly reduces

distortion in the midrange and bass.

• Wood veneer on both sides of the cabinet

walls ensures structural integrity even in

high-humidity environments.

• Video shielded for placement next to TVs.

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Specifications

Monitor Center Subwoofer BeBop

Maximum Output @ 1 meter 110dB with 400w 107dB with 150w 114dB 102dB with 100w

of amplification of amplification of amplification

Recommended Room Size 5,000 ft

5,000 ft

9,000 ft

3,000 ft

Close-Miked Near-Field Response (±3dB) 49-32,000 Hz 67-20,000 Hz 25-200 Hz 67-20,000 Hz

6dB Downpoint 38 Hz 49 Hz 20 Hz 49 Hz

Nominal Coverage Angle (-6dB from reference) 60° H, 42° V 60° H, 50° V 60° H, 50° V

Sensitivity [1 watt (2.83v) @ 1m] 84dB 86dB 84dB

Nominal Impedance 8Ω 8Ω 8Ω

Drivers 1" soft-dome tweeter. 1" soft-dome tweeter. 10" long-throw 1" soft-dome tweeter.

All models are video shielded 6

⁄2" long throw 3" midrange. bass unit with 51⁄4" bass unit with bass unit with polymer 51⁄4" bass unit with aluminum cone, butyl polymer cone, butyl cone, butyl surround, polymer cone, butyl surround. surround, shorting shorting cylinder. surround, shorting cylinder.

cylinder. 51⁄4" passive radiator.

On-Board Tuning Reverberance Reverberance Gain Reverberance

Presence Boundary Low Pass Pi Space Boundary Variable Phase

Amplifier 550w class A/B

digital amplifier.

Cabinetry 1" MDF, veneered inside 1" MDF, veneered inside 1" MDF, veneered inside3⁄4" MDF, veneered inside

and out. Braced on four and out. Braced on four and out. Braced on four and out. Braced on four sides. sides. sides. Includes 3-inch sides.

spikes.

Finishes Black paint on Ash veneer, Cherry veneer, solid White. Custom finishes available.

Weight 40 lbs 20 lbs 60 lbs 14 lbs

Dimensions (HxWxD) 18 x 81⁄2x 13" 7 x 21 x 81⁄4" 16 x 16 x 17" 101⁄2x 7 x 105⁄8"

Add 3" with spikes

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Theater Components

Voice-Matched Components

If you’re building a theater with JAM Monitors

in the front, we offer several options for the

remaining channels. Our JAM Center, BeBop,

and Floating Grille In-walls match the JAM

Monitor ±2dB throughout their operating

range for seamless playback.

JAM Center

Tuned for vocal articulation, this speaker uses

a vertically aligned tweeter/midrange assembly

for smooth horizontal coverage. We eliminate

comb filtering in the midrange, so you hear

dialog and on-screen effects more clearly

throughout the listening area. Voices are life-

like, and effects are clean and distinct. Dual

bass units — one active, one passive — pro-

vide bass to 80Hz.

JAM Active Subwoofer

We take special pride in this subwoofer. Unlike

most subs, ours is free of limiting and soft-

clipping circuits which rob a subwoofer of its

attack. (Engineers include these devices to

overcome deficiencies in their systems.) We

took a different approach, and designed a

high-current amplifier and long-throw bass

unit to work together perfectly. This results in

a subwoofer that produces articulate bass,

and plenty of it.

JAM Subwoofers are small enough to fit into

cabinets and behind furniture. The optional

down-firing tray permits placement behind

kick-panels for a completely concealed look.

BeBop

Choose the BeBop when using a box speaker

for the surround channel. It’s matched to the

Monitor and Center for smooth front to back

pans. The BeBop has a 3⁄8" mounting bracket

insert for wall or ceiling placement.

We spec our theaters with two pair of sur-

rounds. We aim one pair for direct sound, the

other is aimed to produce a diffuse field. This

combination replicates a dubbing studio for

accurate soundtrack reproduction. We espe-

cially like the feeling of “fullness” from two

pair of surrounds.

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Product Construction

Crossover Networks

We build our crossovers with the finest electrical components. We use a glass PCB board and hand-wound chokes. For increased transient response and clarity, we use Solen capacitors, 500v bypass capacitors, and solid-core cable for internal wiring.

Terminal Plate

Our aluminum terminal plate has gold-plated binding posts which accept bare wire, spades, and pins. A unique wire clamp holds your cables in place after installation. The BeBop has a

⁄8" X 20 insert on back

for wall or ceiling mounting.

Speaker Baffle

We fabricate a 3-ply constrained layer baffle with two sheets of MDF sandwiching a visco-elastic polymer core. This type of construction converts vibrations into heat, reducing distortion. You’ll hear more bass, and cleaner midrange.

Cabinetry

Our cabinets are a thing of beauty. We start with architectural grade veneers mounted to a premium substrate. Then, we run the boards through computer controlled woodworking equipment for spot-on precision. We hand sand each cabinet multiple times, and spray each with two coats of paint or lacquer.

On-Board Tuning

We include controls such as Reverberance, Presence, and Boundary with these products to overcome common problems with room acoustics.

Grilles

Our custom–perforated grilles float in front of the cabinet to eliminate defraction. Our speakers have a finished look under the grille, so you can remove them for audiophile performance.

By methodically measuring the effects of room

size, building materials, furnishings, and

speaker placement on music reproduction, we

create products that sound great in any room

of your home. We’re pioneers in this field—the

first, and we believe, only speaker company to

focus entirely on designing speakers mindful

of the interaction of placement on room

acoustics.

Only Bay Audio has on–board filters to opti-

mize the speaker for its intended placement.

These are the most common room acoustic

issues, and a description of the controls we

developed to solve them:

Reverberance

You may have a listening room with hardwood

floors, exposed windows, and a minimum of

furniture. This creates a distinct echo effect in

the room we call reverberance. It makes

certain frequencies — especially the higher

notes — overbearing. We put a Reverberance

control on the JAM Monitor, JAM Center, and

BeBop to mitigate this effect.

On-Board Tuning

Presence

Pro sound engineers touring with bands talk

about “throw” when they describe the dis-

tance a speaker reaches into the audience

before the sound begins to fall off. In the

home, we refer to this as Presence, and

equate it with how natural the Monitor sounds

when a listener is sitting a fixed distance away.

Our Presence control lets you figuratively

move the speaker closer or further from the

listening position to balance its sound.

Boundary

Take a typical speaker and place it on stands.

Sounds good. Now put it in a bookshelf and

its sound changes. Most likely, vocal clarity

degrades, and bass becomes muddy. The

JAM Monitor, JAM Center and BeBop have a

Boundary control to “normalize” placement,

whether you place them on a shelf, in an AV

cabinet, atop a television, or on stands.

Room Modes

Reproducing balanced bass is the trickiest

task an installer faces. Low frequencies are

affected by the size and shape of your listen-

ing area, where you place the speaker, and

where you sit to listen. Every room creates

pockets of strong bass (usually along the walls

and in corners), and pockets where the bass

seems non-existent (unfortunately, usually at

the listening position). These pockets are

known as “standing waves.”

Solving this problem requires multiple sources

of bass. We designed the JAM Monitor to play

full range information in the theater — repro-

ducing much of the same bass information

sent to the subwoofer. Pairing two JAM

Monitors with the JAM Subwoofer puts three

sources of bass into the room, greatly reduc-

ing standing waves.