Samson 4060/4120 owner manual Bridge Stereo Mode, Input Channel + Output

Page 9

Bridge Stereo Mode

BRIDGE

OFF ON

INPUT (CHANNEL 2)

CHANNEL 2

(+) OUTPUT

CHANNEL 1

(+) OUTPUT

The Servo Quad Amplifier provides two rear-panel switches that allow it to be used in a unique bridge stereo mode. When these switches are in their “Off” (left) position, the Servo Quad Amplifier functions as a true quad amplifier, where each of the four independent amplifier channels can receive different input signal and produce independent output signal. However, when either switch is placed in the “On” (right) position, the pair of amplifier channels (1/2 or 3/4) process only the signal present at one input, thus producing a monophonic output signal with a true 120 watt (in the case of the Servo Quad 4060 model) or 240 watt (in the case of the Servo Quad 4120 model) output into 8 ohms. When both Bridge switches are placed in the “On” position, the Servo Quad amplifier operates in bridge stereo mode, acting like a true stereo amplifier, delivering 120 watts of power per channel (in the case of the Servo Quad 4060 model) or 240 watts of power per channel (in the case of the Servo Quad 4120 model).

WARNING: Bridge stereo mode is to be used only when the Servo Quad Amplifier is connected to an 8 ohm speaker load.

Use of bridge stereo mode with speaker loads of 4 ohms or less can result in severe damage to the Servo Quad Amplifier due to excessive heat and current limiting and will void your warranty!

The illustration on the left shows how this works. In bridge stereo mode, the polarity (phase) of the channel 1 output signal is reversed relative to that of the channel 2 output signal (similarly, the channel 4 output signal is reversed relative to that of channel 3). Channels 1 and 2 then process the signal being input to channel 2 (and channels 3 and 4 process the signal being input to channel 3), but the speaker load is connected so that power is derived from both channels. The effective voltage swing seen by the load is thus doubled so that the power output is doubled.

When using the Servo Quad Amplifier in bridge stereo mode, be sure to connect each loudspeaker as shown in the illustration below (and as silkscreened on the rear panel), with the red (+) terminal of channel 2 (and/or channel 3) connected to the positive input of the speaker and the red (+) terminal of channel 1 (and/or channel 4) connected to the negative input of the speaker.

Do not use the black (-) output terminal of either channel (the speaker load must “float” away from the amplifier chassis).

- + + -

- + + - SERVO 4120

CAUTION

!

 

 

 

 

 

 

 

 

 

 

 

QUAD AMPLIFIER

RISK OF ELECTRIC SHOCK

 

 

 

 

 

 

 

 

 

 

 

 

DO NOT OPEN

 

 

 

 

 

 

 

 

 

 

 

 

USE CLASS 2 WIRING

 

-

+

+

 

-

 

-

+

+

-

SERIAL NUMBER

 

 

 

 

emc

 

CH4

4120W

 

CH3

AC USA & CANADA 115V - 60Hz

CH2

4120W

 

CH1

SAMSON

 

 

MAX. LOAD

 

 

 

MAX. LOAD

 

 

 

 

-

+

 

INLET EUROPE & UK 230V - 50Hz

 

+

-

 

EUR . USA . JPN

 

 

MONO 8

 

 

 

650W MAX.

 

MONO 8

 

 

 

 

 

 

 

CAUTION:

ATTENTION:

 

 

 

 

AVIS;

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DISCONNECT SUPPLY CORD

DEBRANCHER AVANT DE

 

 

 

 

SAMSON TECHNOLOGIES CORP., U.S.A.

RISQUE DE CHOC ELECTRIQUE

 

 

 

 

 

BEFORE CHANGING FUSE.

REMPLACER LE FUSIBLE.

 

 

 

 

NE PAS OUVRIR

BRIDGE

 

 

 

FOR CONTINUED PROTECTION

UTILISERUN FUSIBLE DE

 

 

 

 

BRIDGE

DO NOT EXPOSE THIS EQUIPMENT

 

 

 

 

 

AGAINST RISK OF FIRE, REPLACE

RECHANGE DE MEM TYPE.

 

 

 

 

 

 

TO RAIN OR MOISTURE.

 

 

 

 

 

ONLY WITH SAME TYPE OF FUSE.

USA & CANADA

 

 

 

 

 

 

 

OFF

ON

 

 

 

FUSE

T 8A/125V (115V)

 

 

 

 

OFF

ON

 

 

CH4 R

 

 

CH3 R

EUROPE AND UK

CH2 L

 

 

CH1 L

 

 

 

 

 

 

 

T 6.3A/250V (230V)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

-

9

Image 9
Contents Amplifier Introduction Servo Quad Amplifier Features Guided Tour Introduction Servo Quad Amplifier Features Samson Guided Tour Front PanelEmc Guided Tour Rear PanelSetting Up and Using the Servo Quad Amplifier Servo Quad Amplifier Protection Circuitry Input Channel + Output Bridge Stereo ModeBi-amplification Applications THD Appendix a Linearity vs. Frequency SweepAppendix B Power Output vs. THD Rated Output Power, per channel Specifications

4060/4120 specifications

The Samson 4060/4120 series represents a robust line of industrial signalling devices designed to provide reliable alarm and indication systems across a myriad of applications. Engineered with precision and utility in mind, these products serve a pivotal role in safety and operational efficiency in industries ranging from manufacturing to hospitality.

One of the standout features of the Samson 4060/4120 series is its flexible configuration options. Users can easily tailor these devices to meet specific operational needs by adjusting settings such as alarm thresholds, tones, and volumes. This adaptability is further enhanced by compatibility with various power supplies, including AC and DC voltages, making them suitable for diverse environments.

In terms of technologies, the Samson 4060/4120 incorporates advanced digital signal processing (DSP), which ensures crystal-clear audio output. The DSP technology minimizes distortion and enhances sound quality, allowing the devices to produce loud, attention-grabbing signals that can be heard over ambient noise. Additionally, the series includes a wide array of alarm tones and patterns, providing clear differentiation for various alerts.

Durability is another hallmark of the Samson 4060/4120 devices. Constructed with high-quality materials, they are designed to withstand harsh conditions, including extreme temperatures, dust, and moisture. This ruggedness ensures that the devices remain operational in challenging environments, which is crucial for industries that cannot afford downtime.

The series also features easy installation and maintenance. With user-friendly interfaces and accessible wiring options, operators can quickly install and maintain the devices with minimal training. This simplicity reduces labor costs and enhances the overall efficiency of alarm system management.

Moreover, the Samson 4060/4120 series meets international safety standards, ensuring compliance with regulations across various sectors. This compliance provides peace of mind for businesses, knowing that they are utilizing equipment that adheres to strict safety protocols.

In summary, the Samson 4060/4120 series combines flexibility, advanced technology, and robust construction to deliver a reliable signalling solution. These devices not only enhance safety but also streamline operational processes, making them essential for industries that prioritize performance and reliability in their alarm and indication systems.