Galaxy JIBPA50 Audio Compact Power Amplifier User Guide
- June 4, 2024
- Galaxy
Table of Contents
Galaxy JIBPA50 Audio Compact Power Amplifier
Introduction
Thank you for choosing the Galaxy Audio JIB/PA50 Compact Power Amplifier. You have joined the hundreds of thousands of other satisfied Galaxy customers. Since 1977 Galaxy Audio’s professional experience in design and manufacturing ensure our products’ quality, performance and reliability.
System Components
Warning Statement
- Prior to the installation of this product, these installation instructions must be read and completely understood. Keep these instructions for future reference.
- Proper installation procedure by a qualified service technician must be followed, as outlined in these installation instructions. Failure to do so could result in property damage, serious personal injury, or even death.
- Galaxy Audio does not warrant against damage caused by the use of any Galaxy Audio product for purposes other than those for which it was designed or damage caused by unauthorized attachments or modifications, and is not responsible for any damages, claims, demands, suits, actions or causes of action of whatever kind resulting from, arising out of or in any manner relating to any such use, attachments or modifications.
The JIB/PA50 Compact Power Amplifier is an energy-efficient, 50amp Energy Star rated® Class-D amplifier and is perfect for the classroom or meeting room environment.
Automatic Standby
Standby mode activates if no input signal is detected for 20 minutes. Once an input signal is detected the unit resumes normal function.
Installing the Compact Power Amplifier
Wiring Step 1
If you are connecting the sound sources directly to the projector, follow the suggested Option A wiring diagram (Figure 1) for reference.
If you are connecting the sound sources directly to the JIB/PA50 Power Amp and are using the external volume control, follow the suggested Option B wiring diagram (Figure 2) and 10k Pot Volume Wiring Diagram (Figure 3) for reference.
Step 2
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Use standard RCA connectors and/or 1/8″ (3.5mm) mini-cables to connect the input devices (e.g., the projector, other audio sources) to the power amp. Match the wiring polarity. For example, red for positive, black or white for negative. Make sure no wire strand bridges (shorts) the adjacent terminals.
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Insert all four wires on each speaker into the blue 4-pin captive screw plug supplied with the power amp. Use a #1 Phillips screwdriver to tighten the locking screws.
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Insert the captive screw plug into the receptacle on the amp’s rear panel (see drawing).
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Attach the power amp plug to the amplifier.
Do you need to wire the 10k pot volume? If Yes, proceed to Step 3 below
Step 3
When wiring the 10V, Vol/Mute and GND outputs, strip off the insulation from the external volume control wire by 3/16″. Make sure the wire ends do not touch. Keep exposed wire ends shortly after stripping. If the wires touch, they may short the amp.
- Follow the 10k Pot Volume Wiring Diagram to connect the external volume control to the amp (Figure 4).
- Insert all three pins from the external volume control into the green 3-pin captive screw plug supplied with the amp (see drawing).
- Use a #1 flat blade screwdriver to tighten the locking screws.
- Insert the captive screw plug into the receptacle on the amp’s rear panel (Figure 5).
Setup
Input 1 Control and Volume Setup
If you are using the Option A wiring method of installation on page 3, do the following:
- Insert a #1 flat blade screwdriver to the Input 1 control.
- To test the volume, use the screwdriver to gently turn the Input 1 control on the amp counter-clockwise to the end (Figure 6).
- Turn Input 1 control clockwise 1/4 turn.
- Play sound from the loudest audio source input on the projector to help adjust the amp volume.
- Turn the Input 1 control on the amp clockwise slowly until the sound distorts.
- Turn the Input 1 control counter-clockwise until the distortion disappears.
- Adjust the projector volume until you reach the desired sound level.
If you are using the Option B wiring method of installation on page 3, do the following:
- Insert a #1 flat blade screwdriver to the Input 1 control.
- To test the volume, use the screwdriver to gently turn the Input 1 control on the amp counter-clockwise to the end (Figure 6).
- Turn the Input 1 control clockwise 1/4 turn.
- Turn the 10k pot volume to the maximum level.
- Play sound through all the audio inputs on the amp.
- Choose the loudest audio source to help adjust the amp volume.
- Turn the Input 1 control on the amp clockwise slowly until the sound distorts.
- Turn the Input 1 control counter-clockwise until the distortion disappears.
- Adjust the 10k pot volume until you reach the desired sound level.
- After setting up the Input 1, let the sound continue to play and proceed to the “Input 2 Setup” section on page 6.
Input 2 Control Setup
- Attach a device such as a wireless microphone to the amp input. Be sure the mic is turned on.
- Insert a #1 flat blade screwdriver to the Input 2 control.
- Use the screwdriver to gently turn the Input 2 control on the amp counter-clockwise to the end (Figure 7).
- Turn on the mic receiver, if applicable.
- Have someone stand in the desired presentation location and speak into the mic.
- Turn the Input 2 control clockwise until you reach the desired sound level.
- Test feedback by having someone walk around the room and speak into the mic. Is there feedback coming from the mic? If Yes, turn the Input 2 control counter-clockwise until the feedback is gone. If No, continue to step 8.
- Play music through the amp as you test the mic. Is the music too loud compared to the voice on the mic? If Yes, turn the Input 1 control counterclockwise until you reach the desired sound balance. If No, you have finished installation.
Technical Specifications
THREE YEAR LIMITED WARRANTY
WARRANTY Information can be viewed online at http://www.galaxyaudio.com/warranty.phphttp://www.galaxyaudio.com/warranty.php
Specifications in this manual are subject to change without notice. For the most up-to-date manual and information visit www.galaxyaudio.com. 1-800-369-7768 www.galaxyaudio.com © Copyright Galaxy Audio 2013
Frequently Asked Questions
What do you use a power amp for?
The line-level signal is amplified by a power amplifier to increase the volume at which it can be played back through speakers. The impedance, or resistance load, of the speakers affects how well a power amp performs. Visit our Power Amp Buying Guide to find out more information about power amplifiers.
What makes a good power amplifier?
Generally speaking, you should choose an amplifier that has a power output capacity that is double the program/continuous power rating of the speaker. This indicates that an amplifier with a power output of 700 watts into an 8 ohm load is necessary for a speaker with a “nominal impedance” of 8 ohms and a programme rating of 350 watts.
Which signal is amplified by power amplifier?
To put it another way, a power amplifier increases the strength of the input signal, which is why these kinds of amplifier circuits are utilised in the output stages of audio amplifiers to drive loudspeakers.
How many types of power amplifiers are there?
Power amplifiers are classified into the following three categories based on the kind of output device they are linked to: Audio Power Amplifiers. Amplifiers for RF signals. Amplifiers for DC power.
How are power amplifiers classified?
Class A, B, AB, and C power amplifier circuits (output stages) are categorised as linear designs, while classes D and E are categorised as switching designs. The percentage of each input cycle (conduction angle) that an amplifying device passes current during determines the classes.
Do you need amplifier for speakers?
The ability of speakers to transform electrical audio impulses into sound waves for our enjoyment is pretty extraordinary (or displeasure). Amplifiers are necessary for all types of speakers, from little smartphone speakers to large live sound subwoofers.
Do amplifiers lose power over time?
Actually, depending on how they were handled, amplifiers can lose power with time.
How do amplifiers increase power?
Before it is supplied to the speakers, an amplifier makes a larger copy of the input signal from a source, such as a laptop, turntable, or CD player. Your mains electricity, which is routed straight to the amplifier’s power source, provides the energy needed to accomplish this.
Do amplifiers create energy?
The amplifier only reshapes energy into the appropriate waveform, as seen in the diagram below. It neither creates nor destroys energy. An amplifier’s energy source is an external power supply, despite the fact that it can scale a small input signal to a huge output.
Do amplifiers increase voltage?
An electronic device called an amplifier boosts a signal’s voltage, current, or power.
What is the principle of amplifier?
The goal of an amplifier is to provide an output signal that is an enhanced version of the input signal.
How many amps does an amplifier use?
Typically, a car amplifier needs between 10 and 30 amps. (You may discover how much amperage you require by inspecting the fuses often situated close to your amplifier’s inputs.)
Which device can be used in amplifier?
The active device can be an integrated circuit (such as an op-amp), a discrete solid state component (such as a single transistor), or a vacuum tube. The most popular kind of amplifier used today is a transistor amplifier, sometimes known as a solid state amplifier. As the active component, a transistor is employed.
Is Sound Amplifier safe?
On their own, hearing amplifiers aren’t wholly harmful. However, the reason PSAPs are so damaging is that people abuse them. They may be used as hearing aids by many customers, which could further harm their hearing.
How many volts do amplifiers need?
It requires nearly 60 volts of peak-to-peak voltage to deliver around 100 watts to a conventional 4-ohm speaker. Most amplifiers have this voltage set to +30V and -30V in relation to the chassis’ ground reference voltage.
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