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

USER MANUAL L 160 D DB Technologies

USER MANUAL - Section 1

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CE

DESCRIZIONE

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Technical line drawing of a mechanical device with internal components (no text or symbols)

L160D

6) INDICATORE LUMINOSO "ON/SIGNAL"

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^ )

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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°)

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.

4) "VOLUME" CONTROL

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.

"AUX CHANEL" section

7) "AUX CHANEL - INPUT" INPUT CONNECTORS

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:

DSP SETUP

1 - LIVE
2 - PLAYBACK
3 - STAGE MONITOR
4 - MALE VOICE
5 - FEMALE VOICE
6 - STUDIO MONITOR
7 - AUTO LOUDNESS
8 - TALKBACK

L80D

L160D

DSP SETUP

1 - LIVE
2 - PLAYBACK
3 - STAGE MONITOR
4 - MALE VOICE
5 - FEMALE VOICE
6 - STUDIO MONITOR
7 - AUTO LOUDNESS
8 - L160 (Analog)

1 - LIVE

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

2 - PLAYBACK

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.

3 - STAGE MONITOR

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

4 - MALE SINGER

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.

5 - FEMALE SINGER

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.

6 - STUDIO MONITOR

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.

7 - AUTO LOUDNESS

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.

DIAGNOSTICS TABLE

STATE OR CONDITION OF THE MODULE	LED “SIGNAL/ON”	LED “LIMITER”	FUNCTIONS OR DESCRIPTION OF THE MODULE
Normal operation
Power ON	ON for 2/3 sec.	ON for 2/3 sec.	Audio MUTED Initialization of the amplifier module
Normal use (without any audio signal input)	Slow flashing	OFF	Audio ACTIVE Module initialization complete and correct No signal audio.
Normal use	Flashing according to track	OFF	Audio ACTIVE The module has detected a partial anomaly and remains active with limited functions
Amplifier temperature management
Amplifier temperature (thermal threshold)	Normal operation	Normal operation	Audio ACTIVE The amplifier module reduces the volume, up to a maximum of 6dBm, as the temperature rises above the safety threshold.
Generic errors
No power supply (Vac) detected	OFF	OFF	A momentary lack of supply voltage is detected during normal operation
Current overload	Normal operation	Normal operation	During normal operation, a current overload is detected and automatically managed by the amplifier.

TECHNICAL SPECIFICATION

	L80D	L160D
System	Active Bi-Amp	Active Bi-Amp
Type of amplifier	Digital – Class D	Digital – Class D
Power PRG	80W	160W
Musical power	160W	320W
Frequency response (-6dB)	104Hz-20KHz	88Hz-20KHz
(-10dB)	90Hz-20KHz	70Hz-20KHz
Sound pressure (SPL)	112dB	116dB
Component parts	1 woofer 4”+ dome tweeter(coaxial)1 woofer 4”	1 woofer 5” + dome tweeter(coaxial)1 woofer 5”
Input sensitivity nominal	-32dBu / 0dBu (switch)	-32dBu / 0dBu (switch)
Input impedance	LINE/MIC	LINE/MIC
Balanced	30Kohm/600ohm	30Kohm/600ohm
Unbalanced	15Kohm/300ohm	15Kohm/300ohm
RCA Input sensitivity	-12dBu	-12dBu
RCA impendence	4,7Kohm	4,7Kohm
Power supply	110-120Vac 50-60Hz220-240Vac 50-60Hz	110-120Vac 50-60Hz220-240Vac 50-60Hz
Inrush current	600mA	900mA
Current consumption
100-120Vac 50-60Hz	500mA	800mA
220-240Vac 50-60Hz	250mA	400mA
Dimensions (LxHxP)	155X265X180 mm6.1X10.4X9.1inch.	200x335x220mm7.9X13.2X8.7inch.
Weight	3.75Kg8.27lbs	5,2Kg11.46lbs
DSP processor
DSP	56bit	56bit
Audio conversion AD/DA	24bit/48KHz	24bit/48KHz
Volume control	Digital	Digital
Equalization	8 preset EQ	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.

L80D

L160D

BESCHREIBUNG

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L160D

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L160D

DIMENSIONI - DIMENSIONS ABMESSUNGEN - DIMENSIONS

SCHEMA A BLOCCHI - BLOCK DIAGRAM

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Utilizzo con supporto piantana - Use with pedestal stand Anwendung mit Pedestaluntergestell - Utilisation sur pied

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The bracket fastening kit is optional (code SN130)

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Utilizzo con supporto piantana 25mm - Use with 25mm stand Anwendung mit 25 mm ständer - Utilisation avec le stand de 25mm

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The bracket fastening kit is optional (code SA25)

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The bracket fastening kit is optional (code WB13)

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Utilizzo con supporto piantana Use with pedestal stand Anwendung mit Pedestaluntergestell Utilisation sur pied

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Diagram showing a mechanical bracket transforming into a housing (no text or symbols)

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SAFETY INSTRUCTIONS FOR ACCESSORIES

Contact dB Technologies for accessories to be used with speakers.

dB Technologies will not accept any responsibility when inappropriate accessories or not suitable additional devices are used.

Before hanging the loudspeaker check all the components for damages, deformations, missing or damaged parts that may compromise safety during installation.

The installation of the speaker on speaker stand must be carried out exclusively by professionally qualified staff, being careful to place a speaker stand foot in the direction of the output side of the sound (front side of the speaker) so as to maximize stability in relation to the centre of gravity of the speaker