Boston Acoustics BRAVO 2 User Manual

Download

Page 1

High Performance Multi-Purpose Speaker

Bravo II

Page 2

Speciﬁcations

Frequency Response (±3dB) 80Hz–20,000Hz

Recommended Ampliﬁer Power 15–125 watts

Nominal Impedance 8 ohms

Sensitivity [1 watt (2.83v) at 1m] 89dB

Bass Unit 41⁄2" (115mm) copolymer

Tweeter 1" (25mm) black anodized

aluminum dome with AMD

Crossover Frequency 2500Hz

Dimensions (HxWxD) with corner ﬁllers 141⁄4 x 61⁄2 x 51⁄4" (362 x 166 x 134mm)

Dimensions (HxWxD) without corner ﬁllers 141⁄4 x 61⁄2 x 41⁄4" (362 x 166 x 108mm)

Weight 5 lbs (2.25kg)

Finish White, black, or silver textured ABS

with matching metal grille

Description

The Boston Bravo™II is a multi-purpose, high performance compact loudspeaker. The Bravo II, which uses Boston’s patented one-inch aluminum dome VR mounting bracket or rear stand to be mounted or placed virtually anywhere in any room.

tweeter with AMD and a 4

⁄2-inch woofer, can be combined with its supplied

The Bravo II is essentially one-quarter of a cylinder, allowing it to be mounted vertically at any height in a corner, or horizontally at the top of a wall, where wall and ceiling meet. Attaching the Bravo II to any surface is as simple as mounting the bracket to the wall, removing the grille from the speaker, and then attaching the speaker to the bracket using the supplied screws. Once the grille is placed back on the speaker, the means of attachment becomes virtually invisible. Additionally, the Bravo II can be placed either horizontally or vertically on any ﬂat surface, such as a table or a shelf. Horizontally, it can either angle upward by resting on its two corner ﬁllers or sit untilted using the rear stand.

Because it is designed as a high-performance, general-purpose speaker, the Bravo II is suitable for any high-ﬁdelity application where it is important that the speaker blends into its surroundings. The Bravo II is well suited for background and whole house music applications. The Bravo II’s highly ﬂexible mounting bracket allows it to be placed in a wide variety of locations, and to for the speaker to be angled for optimum sound quality and three-dimensional imaging. When a pair is placed vertically in the corners of a room, the Bravo II creates an unusually wide listening window, providing true stereo sound reproduction over a broad area.

For full-range applications, it is recommended that the Bravo II be used in conjunction with one of Boston’s powered subwoofers. The Bravo II’

obust design allows it be used with full-range signals and ampliﬁers rated between 15 and 125 watts. Please

Bravo II’

s r

s low frequency limit is 80Hz, allowing for a great deal of placement ﬂexibility for the subwoofer. The

note that the Bravo II is not magnetically shielded. Therefore, it should not be placed closer than 18 inches from a tube television. The Bravo II may be used safely near pr

ojection and plasma televisions.

Also available; The Boston Bravo II Center. The Bravo II Center is sonically matched to the Bravo II and features

Magnaguard

magnetic shielding allowing for use on or near tube televisions without interference.

Page 3

How to Connect Your Speakers

speaker terminal

amplifier or receiver

Correctly wiring your speakers is important for achieving the best sound quality. Wiring should take just a few minutes, but it’s important to do it carefully, since incorrect wiring (such as reversed connections) can result in a poor soundstage and poor bass.

We recommend 18-gauge wire or thicker for runs up to 15 feet (4.5m), and 16-gauge wire or thicker for longer runs. Separate the ﬁ speaker wire to expose the two conductors and tightly twist the wire strands.

WARNING: To prevent electrical shock hazard, always switch off the ampliﬁer or receiver when making connections to the speaker.

rst few inches of the wire conductors. Strip off

⁄2-inch (12mm) of insulation fr

om the ends of each

IMPORTANT: Typically, one side of the wire is smooth. Connect this side to the other side has a rib or stripe. Connect this to the

+ (red) connection.

– (black) connection. The

Using the spring terminal posts: The spring terminal

posts permit easy connection to banana plugs, spade lugs, and bare wire.

Push the the top of the terminal down by approximately

⁄4-inch, exposing the hole. Insert the wire in the hole

and release the terminal.

Connecting the Boston Bravo to Your Ampliﬁer or Receiver

1. Connect the speaker terminals to the ampliﬁer speaker outputs.

2. Make sure the speaker cable is corectly routed through the mounting

r bracket. (see Mounting Options)

3. When making all connections, be sure

to connect + to + (red) and – to – (black).

4. If using the Bravo II with a subwoofer,

set the receiver's bass management to SMALL in the speaker setup menu. This will diver from the center channel to the main speakers and/or subwoofer

y low frequencies away

t ver

Page 4

ller cap removed

self-adhesive rub

ber feet

applied

bra

cket

removed

angle/corner mounting holes (4) 2 per side

single gang electrical box mounting holes

speaker-to-bracket mounting holes (2) 1 per side

single gang electric outlet opening

speaker cable run holes (2) on top and bottom

flat mounting holes (4) 2 per side

Using the Bravo II on a Flat Surface

corner fillers facing in 

bracket removed 

The Bravo II can be used on a ﬂ

at surface, such as a table, shelf or the ﬂoor. For horizontal placement that angles up

at 45º, both corner ﬁllers must be used and the bracket must be removed. For untilted horizontal placement, the

ear stand must be used

with the mounting bracket attached (see “Mount the Speaker to the Bracket” and the “Rear Stand Installation Instructions” found on page 6. For vertical applications mount the four supplied rubber feet to the bottom of the speaker. Attach two of the supplied self-adhesive rubber feet so that its edge contacts the back edge of the cabinet. Apply two more self-adhesive rubber feet to the recesses at the front of the cabinet.

Mounting the Bravo II

Identify the Bracket

In its packing material, the Bravo II’s mounting bracket is ﬁtted into the back of the speaker. Remove the tape that is temporarily holding the bracket to the speaker, and then pull the bracket away

mine

om the back of the speaker

fr how the Bravo II is to be mounted to the wall or ceiling. It can be mounted either horizontally or vertically, either on an open section of wall, or where two or three room surfaces meet. Refer to the illustration her

e to deter holes on the Bravo II bracket should be used for your application.

NOTE: The large rectangular hole in the middle of the bracket will ﬁt a single gang electrical outlet to route the speaker wire through a conduit.

. Deter

mine what screw

Vertical Placement

Horizontal Placement–Angled Up

Page 5

Mount the Bracket to the Wall

corner filler (2) 

use up to 16 AWG speaker wire

feed wire through top or bottom opening

Decide where to mount bracket. IMPORTANT: See “Ceiling Clearance” on page 6.

mine what mounting holes in the bracket will be used.

Deter

Mark the holes on the wall or ceiling using bracket as a template.

Drill the holes using the appropriate drill bit size to accommodate the mounting hardware that you plan to use (ie,

⁄2-inch diameter to clear the toggle bolts for hollow surfaces or small enough to allow self-tapping screws in a solid surface).

Mount the bracket ﬂat or into a corner as shown below. We recommend the use of four fasteners wherever possible. Consult a knowledgeable installer regarding the proper hardware to use on your wall.

Strip the speaker wires ends, and feed the speaker wire through the appropriate bracket opening.

Connect the wire to the speaker’s terminals, taking care to maintain speaker polarity. (See “How to Connect Your Speakers” and “Basic Hookup” on page 3). Both the Bravo II and its bracket are symmetrical, so the speaker can be mounted with either its woofer or tweeter on top. In general, bass performance will be enhanced with the woofer as close to as many room surfaces as possible.

Flat Mount Example

Corner Mount Example

Corner Fillers

If the Bravo II is being mounted in a corner, then one or both of the supplied

ner ﬁllers may be inserted into the slots on the back of the speaker. These

cor accessories will enhance the appearance of the installation by making it appear that the back of Bravo II extends into the cor

NOTE: Up to 16-gauge speaker wire will ﬁt between the ﬁllers and the corner.

ner

Page 6

Ceiling Clearance

eiling

or wall

nches (16mm)

eiling

inches (86mm)

4 inner "fingers"

2 outer "thumbs"

web in slot

If the Bravo II is to be mounted so that the top or the side of the speaker will meet a ﬂush surface, either a wall (horizontally) or the ceiling (vertically), then measure the exact distance as shown her face to the top or side of the bracket.

Mount the Speaker to the Bracket

Remove the speaker’s grille by grasping the back of the cabinet in one hand, while gently pulling the grille away with the other hand.

Align the openings in the back of the speaker with the two posts protruding from the bracket as shown below.

Gently remove any slack in the speaker wire as you push the speaker ﬁrmly onto the bracket.

Attach the speaker to the bracket by inserting the supplied screws through the holes in the front of the speaker and into the bracket as shown below

over-tighten the screws

e from that sur-

(do not

Replace the grille on the speaker.

NOTE: The Bravo II is not securely attached to its bracket unless the screws are used.

Rear Stand Installation Instructions

The Boston Bravo can be used horizontally on an untilted ﬂat surface, such as a table, shelf or the top of a rear projection TV using the included rear bracket stand.

First mount the speaker to the bracket (see above).

Next, place the speaker in the location that you intend to use it in (ie, correct grille/logo and tweeter/woofer orientation). Hold the stand in an upright position as indicated (note that the stand angles away from the bracket). Line up the stand with the lower slot in the bracket so that the 2 middle “ﬁngers” are on either side of the web that bisects the slot. Slightly angle the stand away from the bracket and push the stand ﬁngers up into the slot so that the 4 inner “ﬁngers” are

inside the slot and the 2 outer “thumbs” ar

placed outside the slot. Gently push the stand up into the bracket slot until the “ﬁngers” and “thumbs” snap into place.

Attach the rubber feet to the stand and cabinet (detailed on page 4).

e placed

Push stand into bracket slot until

ngers” and

“ﬁ “thumbs” click into place

ubber foot to

Stick a r both pads on the stand and to both lower

ners of the cabinet

cor (do not apply to grille)

Page 7

volume0

567

crossover Hz crossover polarity

50 150

80 120set none 0°180 °

Bos

ton

front main corner mount (or any other corner)

rear surround flat mount

horizontal floor or shelf placement angled up

rear surround angled down

rear surround angled back

horizontal flat mount

horizontal untilted with rear stand

Using the Bravo II as a Surround Speaker

Two Bravo IIs can be used as surround speakers for Dolby®Surround, Dolby® Pro Logic®, Dolby®Digital and DTS surround sound formats. A third or fourth Bravo II can be added for use with Surround EX and DTS®ES surround sound formats. In general, best results will be obtained when the surround speakers are placed above ear level and either behind or beside the listening area. However, if attaching speakers to the wall is not an option, then the Bravo IIs can be placed horizontally directly on the ﬂoor. Since the low frequency limit of the Bravo II is approximately 80Hz, speaker bass management should be set to "small." This will redirect the surround channels’ bass

mation to either the system’s subwoofer or main speakers. Please consult your surround sound electronics

infor owner’s manual for additional information about speaker placement and bass management

Using the Bravo II as a Main Speaker

The Bravo II can provide exceptional performance from 80Hz and above. For deep bass reproduction, a powered subwoofer might be a suitable addition to the Bravo II. In small or medium size rooms, two Bravo IIs should provide ample volume, given appropriate ampliﬁer power of between 15 and 125 watts. In larger spaces, additional Bravo IIs may be necessary.

For broad, stereo coverage, vertical corner mounting of the Bravo II will produce excellent results. This technique will work especially well in situations where the distance between the two speakers is approximately 12 to 18 feet.

Mounting Possibilities of the Bravo II

We designed the Bravo II to be mounted or placed in a wide variety of conﬁgurations. Shown below are seven of the most common possibilities for you to consider.

Page 8

Rotating the Logo for Horizontal Mounting or Placement

The logo plate on the Bravo II’s grille can be rotated 90° in either direction to enhance the speaker’s appearance when mounting or placing it in a horizontal position. To rotate the logo:

Remove the grille and turn it over.

Locate the logo’s spring loaded post protruding through the bottom inside portion of the grille.

Place your thumb against the post and press ﬁrmly until the logo pops forward.

Rotate the logo to the desired position and release pressure on the post allowing it to snap back into the seated position.

Listening Levels and Power Handling

The listed power recommendations in the Speciﬁcations section assume you will operate your system in a way that will not produce distortion. Even these rugged speakers can be damaged by a modest ampliﬁer if it produces distortion. If you hear a harsh, gritty noise, turn down the volume. Prolonged or repeated operation of your speaker with a distorted signal from the ampliﬁer can cause damage that is not covered by the warranty.

If Service Seems Necessary

First, contact the dealer from whom you purchased the speakers. If that is not possible, write to:

Boston Acoustics, Inc. 300 Jubilee Drive Peabody, MA 01960 U.S.A.

We will promptly advise you of what action to take. If it is necessary to return your speaker to the factory, please ship it prepaid. After it has been repaired, we will return it freight prepaid in the U.S.A. and Canada.

Dolby and Dolby Pro Logic are registered trademarks of Dolby Laboratories Licensing Corporation.

d, Boston, and

300 Jubilee Drive

Peabody,

MA 01960 U.S.A.

978.538.5000

www.bostonacoustics.com

Boston Sound and AMD ar Boston Acoustics, the Boston Acoustics Logo, and VR are registered trademarks of Boston Acoustics, Inc.

Speciﬁcations subject to change without notice.

042-002157-0

e trademarks and MagnaGuar