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Roland BA-55 Battery-Powered Portable Amp

Deskripsi

Roland BA-55 Battery-Powered Portable Amp

Versatile, Portable PA with a Twist
The unique BA-55 provides self-contained, high-quality, and battery-powered sound reinforcement for any environment. It’s solidly built yet lightweight, and comes bundled with a matching wireless microphone for public speaking, singing, and many other events. Use the BA-55 as a small wireless PA system in school classrooms, business meetings, restaurants, weddings, intimate music venues, and more. In a cool and convenient twist, the BA-55 contains an internal accelerometer sensor that automatically switches operation between stereo output (when positioned horizontally) and mono output (when positioned vertically). If you’re speaking and need maximum power and projection, use the vertical mono mode. For wide musical spread, turn horizontal. It’s that easy! The BA-55 is available in two color choices, black (BA-55) or white (BA-55-WH). Choose one of these classic colors to blend best with your surroundings.

Portable design with high-quality sound for audiences up to 80 people

SPL (sound pressure level) rated at a powerful 108 dB

One 2.4 GHz wireless microphone included (DR-WM55); a second DR-WM55 can be purchased separately for simultaneous use

Operates on 8 AA batteries or AC power (AC adaptor included)

Onboard accelerometer sensor switches operation to stereo mode when positioned horizontally

Two 6.5" (16 cm) high-performance speakers

Three-channel built-in mixer with two-band EQ

Echo/Reverb effect

Built-in Anti-Feedback function

Line Output for recording or expanding the system

Integrated storage compartment for storing wireless microphones and accessories

Auto Power Off function

Compatible with Roland ST-A95 speaker stand

Easy to Use and Transport
With the BA-55, ease of use is the name of the game. There’s nothing complicated about it: just turn on the wireless microphone and/or plug in your instruments, set the volume to the desired level, and go. That’s it! The BA-55’s automatic anti-feedback system blocks acoustic feedback without interrupting your audio. For easy transport, the BA-55 has a convenient built-in storage compartment to house your wireless microphones and accessories.

Multi-Purpose PA
The BA-55 lets you enjoy great sound anywhere, indoors or outdoors. Use batteries or the included AC adapter for the ultimate in convenience and flexibility— For speech, position the BA-55 vertically and the internal accelerometer will automatically switch operation to mono mode for maximum sound projection. For music, place the BA-55 horizontally and it will automatically switch to stereo mode; this is perfect when using MP3/CD players at dance parties, etc., or any application where wide sound projection is desired.

Built-In Echo/Reverb
Onboard the BA-55 is an Echo/Reverb that sounds great and is easy to use, with a single knob that adjusts both the effect type and amount. When you turn the knob from the Off position to 12 o’clock, you activate a natural plate-reverb-type effect that adds a natural ambience to your voice and/or instruments. When you turn from the 12 o’clock position to maximum, you switch to a repetitive echo-type effect. The echo/ reverb can also be turned on and off from the included DR-WM55 wireless microphone for convenient remote control (see below).

Wireless Microphone Included
The BA-55 package includes a high-quality wireless microphone (DR-WM55). Designed specifically for this system, the mic has Power On/Off and Echo On/Off switches. The Echo switch is linked to the BA-55’s Echo/Reverb effect, which lets you enable and disable it directly from the mic. This is a very handy feature, allowing the effect to be quickly turned off when speaking or making announcements, then easily switched back on for singing.

Specification:

Rated Power Output

20 W (10 W + 10 W)
SPL 108 dB

Nominal Input Level (1 kHz)

MIC (XLR type)

-50 dBu

AUDIO/INST (RCA phono type)

-10 dBu

AUDIO/INST (Stereo miniature phone type, 1/4-inch phone type)

-20 dBu

Nominal Output Level (1 kHz)

LINE OUT

-10 dBu

Speakers

16 cm (6.5 inches) x 2

Wireless Reception Method

Roland Original (for DR-WM55 only)

Controls

POWER Switch, CHIME Button, CHIME VOLUME Knob, ECHO Knob, AUTO POWER OFF Switch

Channel Controls

Wireless 1, Wireless 2: VOLUME Knob
AUDIO/INST: VOLUME Knob

Master Controls

Equalizer: HIGH Knob, LOW Knob

Indicator

PANEL

WIRELESS 1, WIRELESS 2, ANTI-FEEDBACK, STEREO, POWER

FRONT

WIRELESS 1, WIRELESS 2, POWER

Connectors

MIC

Input jacks (XLR type, 1/4-inch TRS phone type)

LINE

AUDIO Input jacks (Stereo miniature phone type, RCA phono type)
INST Input jack L/MONO (1/4-inch phone type)
INST Input jack R (1/4-inch phone type)

OUTPUT

LINE OUT jacks (RCA phono type)

DC IN

DC IN jack

Power Supply

DC 12 V

Alkaline battery (AA, LR6) x 8
Rechargeable Ni-MH battery (AA, HR6) x 8
AC Adaptor

Current Draw

430 mA

Expected battery life under continuous use

Alkaline battery (AA, LR6): about 6 hours
Rechargeable Ni-MH battery (AA, HR6): about 6 hours
* These figures will vary depending on the actual conditions of use.

Other

Accessories

Wireless MIC (DR-WM55) x 1
Power Cord
AC Adaptor
Owner's Manual

Options (sold separately)

Wireless MIC (DR-WM55)
Speaker Stand (ST-A95)

Size and Weight

Width

355 mm
14 inches

Depth

265 mm
10-7/16 inches

Height

481 mm
18-15/16 inches