L 160 D - Speaker DB Technologies - Free user manual and instructions

USER MANUAL L 160 D DB Technologies

30Kohm/600ohm 15Kohm/300ohm LINE/MIC

6.1x10.4x9.1inch. 200x335x220mm

DESCRIPTION The speakers in this series use a latest generation digital amplifier. This highly efficient amplifier provides high power with limited weight and dimension. Thanks to the low power dissipated, the cooling of the amplifier module does not require a fan. The digital preamplifier with DSP (Digital Signal Processing) controls the audio crossover of the acoustic components, the frequency response, the limiter, and the phase alignment. The correct switch on of the amplifier is guaranteed by an initialization procedure; during this test stage the LEDs (“LIMITER” and “ON/SIGNAL”), located on the amplifier module, stay on together for approx. 2 sec. At the end of the switch on procedure, on the amplifier module, the “ON/SIGNAL” green LED flashes slowly, when there is signal absence. During normal operation the “ON/SIGNAL” green LED serves as Vu-meter monitoring the audio level reproduced. The "LIMITER" red LED lights up to indicate that the internal limiter circuit has tripped to prevent amplifier distortion and protects the speakers against overloads. Thermal control is provided by the internal DSP, by means of one sensor, controls the temperature of the amplifier, avoiding overheating by limiting the overall volume. In case of overheating (> 90°C) the volume decreases proportionally to the temperature increase, making the change unnoticeable. The correct volume and all the functions are automatically restored when standard operating temperatures are reached.

L80D The active speaker L80D is equipped with an amplifier capable of delivering a power of 80W. The speaker is equipped with a 4" woofer with dome tweeter (coaxial - voice coil 1”) and 4” woofer (voice coil 1”) The speaker case is made of plastic material The M5 threaded holes on the side and the bottom allow the possibility to use the speaker attached to a bracket. It is also designed for use in rest position as a monitor (with an angle of 45°)

L160D The active speaker L160D is equipped with an amplifier capable of delivering a power of 160W. The speaker is equipped with a 5" woofer with dome tweeter (coaxial - voice coil 1”) and 5” woofer (voice coil 1”) The speaker case is made of plastic materials and is equipped with a recessed handle in the back that makes it easy to transport. The M5 threaded holes on the side and the bottom allow the possibility to use the speaker attached to a bracket. It is also designed for use in rest position as a monitor (with an angle of 60°)6 ENGLISH

COMMANDS AND FUNCTIONS (FIG. 1) INPUT/OUTPUT and CONTROLS section

1) “ BALANCED INPUT” (XLR) and " LINK" (JACK 6,3mm) CONNECTORS

These balanced inputs can be used to connect balanced or unbalanced microphones or audio sources at line level (0dB) (eg. preamplifier, mixer, recorder, CD player, musical instrument, ...). The balanced connector is connected in parallel and can be used to send the audio signal to other amplified speakers, recorders or supplementary amplifiers.

2) “INPUT SENS” SWITCH

Position the switch in LINE to use a line level source (0 dB) or MIC to use a microphone.

3) EQUALIZATION “DSP SETUP” SELECTOR

This control enables to select the suitable equalization for loudspeaker use.

The knob regulates the speaker´s volume. This control does not affect the output “LINK” levels.

5) “LIMITER” INDICATOR LIGHT

This indicator shows red to indicate that the internal limiter circuit has tripped. This prevents amplifier distortion and protects the speakers against overloads.

6) “ON/SIGNAL”INDICATOR LIGHT

This indicator light comes on green to indicate that the amplifier is switched on and it is working properly. The “ON/SIGNAL” green LED flashes slowly, when there is signal absence. During normal operation the LED serves as Vu-meter monitoring the audio level reproduced.

Through the RCA phono connectors, this input permits easy connection of CD, DAT, cassette players, etc.... .

8) "AUX CHANNEL - VOLUME" CONTROL

This control adjusts the output volume from the speaker of just the AUX CHANNEL signal. This control does not affect the overall volume of the speaker.

Power supply section

9) POWER SWITCH “POWER”

This switch can be used to switch the speaker on and off.

10) FUSE CARRIER “FUSE”

Mains fuse housing. Replace only with identical value!

11) POWER CABLE SOCKET “MAINS”

Used for connecting the power cable supplied. DSP SETUP The DSP allows the selection of 8 different equalizations:

For use during live performances with the speaker placed on a stand. Recommended for musicians and singers.

To listen and use music from MP3 players, CDs, etc.., even in a live situation with the speaker positioned on a stand. Low and high frequencies are emphasized.

To be positioned on the floor as stage monitor. Low frequencies, emphasized by the floor, are limited, thus preventing related feedbacks.

Designed for male voices since middle and low frequencies are emphasized minimizing the feedback due to the proximity effect of the cardioid or hypercardioid microphones.

Designed for female voices. This preset emphasizes middle and high frequencies, making voices sharper. The feedback is extremely limited for both cardioid and hypercardioid microphones.

Designed specifically for use in the studio, or where a flat response curve of the input signal is required. In this case the output signal turns out to be as faithful as possible to the original signal.

For all those situations where the music is played in the background. In this case the low frequencies are extended and enhanced, so as to create a more enveloping sound even at low sound level. 8 – TALKBACK only with speaker L80D Specifically designed to improve speech intelligibility. The frequency response curve in this preset proves to be appropriate for broadcasting announcements, notices and voice messages.

8 - L160 (Analog) only with speaker L160D

When the speaker is positioned on a stand, specifically designed for music playback (MP3, CD etc..). The response curve of the speaker in this preset turns out to be identical to that of the analogue model L160.

MODULE LED “SIGNAL/ON” LED

Initialization of the amplifier module Normal use (without any audio signal input)

Flashing according to track OFF

The module has detected a partial anomaly and remains active with limited functions Amplifier temperature management

Amplifier temperature (thermal threshold)

The amplifier module reduces the volume, up to a maximum of 6dBm, as the temperature rises above the safety threshold. Generic errors

A momentary lack of supply voltage is detected during normal operation Current overload

During normal operation, a current overload is detected and automatically managed by the amplifier.8 ENGLISH

Frequency response (

(coaxial) 1 woofer 4” 1 woofer 5

Balanced Unbalanced LINE/MIC

30Kohm/600ohm 15Kohm/300ohm LINE/MIC

30Kohm/600ohm 15Kohm/300ohm RCA Input sensitivity

6.1X10.4X9.1inch. 200x335x220

7.9X13.2X8.7inch. Weight

DSP Audio conversion AD/DA Volume control Equalization

56bit 24bit/48KHz Digital 8 preset EQ EMI CLASSIFICATION According to the standards EN 55103 this equipment is designed and suitable to operate in E3 (or lower E2, E1) Electromagnetic environments.9

(coaxial) 1 woofer 4” 1 woofer 5

30Kohm/600ohm 15Kohm/300ohm LINE/MIC

6.1X10.4X9.1inch. 200x335x220

(coaxial) 1 woofer 4” 1 woofer 5

30Kohm/600ohm 15Kohm/300ohm LINE/MIC

6.1X10.4X9.1inch. 200x335x220

7.9X13.2X8.7inch. Poids

SAFETY INSTRUCTIONS FOR ACCESSORIES