Lowell MA30 Installation Sheet And Operators Manual Download Page 2

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REMOVABLE

PHOENI X

CONNECTOR

Instruction Sheet

IS-MA30

Issued: 2-18-19

Lowell Manufacturing Company

100 Integram Drive

Pacific, Missouri 63069 U.S.A.

Call: 800-325-9660

Fax: 636-257-6606

Click: www.lowellmfg.com

 

Read these instructions.    

Keep these instructions.    

Heed all warnings.  

Follow all instructions.       

Do not use this apparatus near water.    

Clean only with a dry cloth. 
Do not block any ventilation openings.  Install in accordance with manufacturer

s instructions. 

Do not install near any heat sources such as radiators, registers, stoves, or other apparatus (including amplifiers) 

that produce heat. 

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 
third prong is provided for your safety.  If the provided plug does not fit into your outlet, consult an electrician for 
replacement of the obsolete outlet. 

Protect the power cord and plug from being walked on or pinched particularly at plugs , convenience receptacles, 

and the point where it exits from the apparatus. 

Only use attachments and accessories specified by the manufacturer . 
Use only with the cart, stand, tripod, bracket, or table specified 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 tip-over. 

Unplug this apparatus during lightning storms or when unused for long periods of time . 
Refer all servicing to qualified 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. 

The plug on the power cord is the AC mains disconnect device and must remain readily operable .  To completely 

disconnect this apparatus from the AC mains, disconnect the power supply cord plug from the AC receptacle. 

This apparatus shall be connected to a mains socket outlet with a protective earthing connection . 
When permanently connected, an all-pole mains switch with a contact separation of at least 3 mm in each pole 

shall be incorporated in the electrical installation of the building. 

If rack mounting, provide adequate ventilation.  Equipment may be located above or below this apparatus, but 

some equipment (like large power amplifiers) may cause an unacceptable amount of hum or may generate too 
much heat and degrade the performance of this apparatus. 

This apparatus may be installed in an industry standard equipment rack .  Use screws through all mounting holes 

to provide the best support. 

WARNING: 

To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.  Apparatus 

shall not be exposed to dripping or splashing and no objects filled with liquids, such as vases, shall be placed on the 
apparatus.  This product may contain chemicals known to the State of California to cause cancer , or birth defects or 
other reproductive harm. 

NOTE: This equipment may generate, uses, and can radiate radio frequency energy and, if not installed and used in accordance 
with the instructions, may cause harmful interference to radio communications .  However, there is no guarantee that interference 
will not occur in a particular installation.  If this equipment does cause harmful interference to radio or television reception, which 
can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more 
of the following measures:  Reorient or relocate the receiving antenna. 
Increase the separation between the equipment and receiver. 
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. 
Consult the dealer or an experienced radio/TV technician for help. 

 

CAUTION:

 Changes or modifications not expressly approved by Lowell Manufacturing will void the manufacturers warranty .  

IMPORTANT SAFETY INSTRUCTIONS

Summary of Contents for MA30

Page 1: ...Missouri 63069 U S A Call 800 325 9660 Fax 636 257 6606 Click www lowellmfg com MA30 INSTALLATION SHEET AND OPERATORS MANUAL 1 MA30 General Description The MA30 is equipped with a 30 watt power amplifier with 4W 8W 25V and 70V speaker outputs available at screw terminals The unit is powered by 120VAC 60Hz The main AC input is protected by a circuit breaker on the rear panel An unswitched convenien...

Page 2: ...ompletely disconnect this apparatus from the AC mains disconnect the power supply cord plug from the AC receptacle This apparatus shall be connected to a mains socket outlet with a protective earthing connection When permanently connected an all pole mains switch with a contact separation of at least 3 mm in each pole shall be incorporated in the electrical installation of the building If rack mou...

Page 3: ...r Amplifier 30W RMS AUX 1 Input AUX 1 Volume Control PROGRAM Volume Control G COM HOT PROGRAM Input AUX 3 Input MIC TEL Volume Control G COM HOT MIC TEL Input AUX 2 Input G COM 8W 8W 70V 25V COM 4W SPEAKER LEVEL OUTPUTS MUSIC ON HOLD MOH OUTPUT MOH Level Control Telephone Input Screw terminals switchable same terminals as mic input 100mV 10kW balanced Program Input Screw terminals 100mV 10kW balan...

Page 4: ...tomer Service to arrange for a replacement INITIAL PERFORMANCE CHECK GENERAL WIRING AND INSTALLATION GUIDELINES DO NOT run microphone cables near AC power wires data cables telephone cables or speaker wiring to avoid picking up extraneous signals in the sound system DO NOT run speaker output cables near data cables telephone cables or other low voltage wiring that could pick up the signal from the...

Page 5: ... plastic feet maintain the proper spacing under the amplifier for passive convection cooling Do not place anything on top of the amplifier where the vents on the top of the chassis would be blocked If the amplifier will be rack mounted we recommend that you provide a minimum of 1 75 of open space above and below the unit to assure proper ventilation Provide ventilation fans in the equipment cabine...

Page 6: ...the impedance of the amplifier output For example it is safe for the amplifier if the 8W output is used to drive an 8W load or a 16W load and it is safe for the 4W output to drive a 4W load or a 6W load but it is not safe for the 8W output to drive a 6W load and it is not safe for the 4W output to drive a 2W load Overloading the amplifier output can cause distortion and can damage the amplifier an...

Page 7: ... 5 watt 70V 25V dual voltage transformer That means that this speaker can be used on both 70V systems and 25V systems The 8W secondary of the transformer is connected directly to the 8W input terminals on the 810 speaker The primary has transformer taps for either 70V or 25V at 0 25W 0 5W 1W 2W and 5W When a designer is mapping out the coverage of these ceiling speakers he she will determined how ...

Page 8: ...that tapping the speakers at 1W is the best choice Some system designers feel it is best to tap the speaker transformers as high as possible Consider an example where a sound system that has a 125W 70V amplifier only has 10 speakers If the transformers are tapped at 0 25W each the total speaker load will be 0 25W X 10 speakers 2 5W If the amplifier is turned all the way up so its output is 70 volt...

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