Phonic MAX 250, MAX 500 User’s Manual
MAX 250
MAX 500
MAX 250 MAX 500
User's Manual
Manual del Usuario
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MAX 250
MAX 500
POWER AMPLIFIER
AMPLIFICADOR DE POTENCIA
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ENGLISH |
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ESPAÑOL ..................................... |
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V1.1 10/17/2012
USER'S MANUAL
CONTENTS
INTRODUCTION |
1 |
FEATURES |
1 |
PRECAUTIONS |
1 |
FRONT PANEL |
2 |
BACK PANEL |
3 |
SPECIFICATIONS |
4 |
APPENDIX |
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APPLICATIONS |
1 |
BLOCK DIAGRAMS |
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Phonic preserves the right to improve or alter any information within this document without prior notice
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IMPORTANT SAFETY INSTRUCTIONS
The apparatus shall not be exposed to dripping or splashing and that no objects |
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with liquids, such as vases, |
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shall be placed on the apparatus. The MAINS plug is used as the disconnect device, the disconnect device shall remain readily operable.
Warning: the user shall not place this apparatus in the 
area during the operation so that the mains switch can be easily accessible.
1.Read these instructions before operating this apparatus.
2.Keep these instructions for future reference.
3.Heed all warnings to ensure safe operation.
4.Follow all instructions provided in this document.
5.Do not use this apparatus near water or in locations where condensation may occur.
6.Clean only with dry cloth. Do not use aerosol or liquid cleaners. Unplug this apparatus before cleaning.
7.Do not block any of the ventilation openings. Install in accordance with the manufacturerís instructions.
8.Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including 
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9.Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not 
into your outlet, consult an electrician for replacement of the obsolete outlet.
10.Protect the power cord from being walked on or pinched particularly at plug, convenience receptacles, and the point where they exit from the apparatus.
11.Only use attachments/accessories 
by the manufacturer.
12.Use only with a cart, stand, tripod, bracket, or
table 
by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus
combination to avoid injury from tipover.
13.Unplug this apparatus during lighting storms or when unused for long periods of time.
14.Refer all servicing to 
service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
CAUTION |
RISK OF ELECTRIC SHOCK |
DO NOT OPEN |
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, |
DO NOT REMOVE COVER (OR BACK) |
NO USER SERVICEABLE PARTS INSIDE |
REFER SERVICING TO QUALIFIED PERSONNEL |
The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated ìdangerous voltageî within the productí 
magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
WARNING: To reduce the risk of 
or electric shock, do not expose this apparatus to rain or moisture.
CAUTION: Use of controls or adjustments or performance of procedures other than those 
may result in hazardous radiation exposure.
INTRODUCTION
Congratulations on your purchase of the Phonic MAX250 or
MAX500PowerAmplifier.LikeotherPhonicMAXamplifiers,these units are designed to provide a good combination of power, audio clarity, reliability and durability. The MAX speakers were specially optimized for studio monitoring applications and moderate-power live performance setups.
Please be reminded that a power amplifier is a high-current, highpower device and should be treated with respect and care. Please read this manual before connecting and operating your unit and file it in a safe place for future reference.
FEATURES
240 watts per channel into 4 ohms, 180 watts per channel into 8 ohms (MAX500)
160 watts per channel into 4 ohms, 120 watts per channel into 8 ohms (MAX250)
Front panel LED indicators for clip & signal
Front panel Protect LED on the MAX500
Detented dB gain controls
Built-in protection system for short circuit, DC and temperature monitoring
Power-up muting
-26dB signal presence LEDs on each channel
Input connectors accept XLR and TRS phone jacks
Stereo/Parallel switch
Ground/Floating switch
Massive, custom-designed extruded heatsinks (individual for each channel) for cool operation
No ventilation fan is needed, allowing for quiet operation and reduced ambient noise in the studio
Extremely low noise and distortion, suitable for quiet applications such as recording studio, church and museum
PRECAUTIONS
1.When first powering-up the amp, keep the amplifier Gain
Controlsallthewayoff,inordertoblockpotentiallydamaging or annoying sounds caused by defective cables or hookups.
When turning up the Gain, do it gradually, until normal operation is verified. These precautions are necessary with all high-power amplifiers, since they have enough power to blow most speakers in abnormal situations
2.Check the AC Voltage before connecting the AC plug.
3.The amplifier is protected from surges in power-line voltage by the fuses. Should your unit ever fail to power-up, first unplug the power cord, and then replace the fuse with exact type and value.
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MAX250 / MAX500 |
1 |
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FRONT PANEL
1.Gain Controls
These two knobs are the level controls for Channel one and two respectively.Turning clockwise will increase its gain, and counterclockwise will decrease its gain. Please always power-up with the volume all the way down, and increase volume slowly to make sure that no conditions exist which could annoy your audience or harm your speakers
2.Protect LED Indicator (MAX500 only)
The MAX500 features several types of protection to prevent damage to the circuitry during turn-on or fault conditions. If the
LEDs light up, this indicates that one of the various protections is safeguarding the different sections of the amplifier and in these cases, the power output is normally switched off until normal operating conditions are restored.
Loudspeakerprotection:intheeventofmalfunction,asensor located on the power outputs is able to break the circuit avoiding that current peaks reach the speakers and damage them.
Thermal protection on the heatsink: If the amp overheats, thermal shutdown protects the circuitry until the temperature is reduced to a safe level.
Short circuit protection: The Protect LED Indicator will also light up if the speaker terminals are short circuited, or the impedance of the load is too low. In these circumstances, the Protect LED will stay on until the fault condition is rectified.
Some protection situations require the amplifier to be switched off and then back on for normal operating conditions to be restored.
3.Limit/Clip Indicator
ThisLEDlightsupduringclippingstatus,wheneveranyconditions occur that could leak to non-linearility, such as an out-of-spec load and waveform distortion. Because of the MAX’s ability to enter and exit clipping with as few audible artifacts as possible, you may not hear any distortion even if the indicator flashes. In general, a few flashes every now and then will not be a problem.
However, if the LEDs flash often or remain on for any extended period of time, then turn the volume controls down to reduce the signal level going into the MAX. If this doesn’t solve the problem, check your output cables and speakers.
4.Signal Indicator
Each channel of the MAX features a signal LED to show that there is an audio signal at the input to the channel. The threshold for the indicator is -26 dB, which should be enough to avoid noise triggering the LED.
5.Power Switch and Indicator
This is the power on/off switch with an LED indicator.
Always start with Gain Control (1) all the way down before powering-up to avoid abnormal sound from defective cables or hookups.
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MAX250 / MAX500 |
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