Galaxy Audio POWERED MICRO SPOT User Manual

User Guide

®

HOT SPOT, HOT SPOT VC,
MICRO SPOT VC, POWERED
HOT SPOT, POWERED MICRO SPOT

®

TABLE OF CONTENTS

IMPORTANT SAFETY INSTRUCTIONS......................................

WELCOME...................................................................................

BEFORE YOU BEGIN..................................................................

OHM’S LAW AND THE HOT SPOT

SOUND REINFORCEMENT BASICS..........................................

HOT SPOT SERIES/MICRO SPOT VC.......................................

POWERED HOT SPOT/POWERED MICRO SPOT....................

USING THE PA5XD..................................................................

USING THE HOT SPOT WITH THE PA5XD............................

POWERED MICRO SPOT MSPA/MSPA-DC...............................

STAND MOUNTING.....................................................................

MOUNTING YOUR MICRO SPOT SERIES SPEAKERS............

SPECIFICATIONS........................................................................

WARRANTY..................................................................................

REGISTRATION...........................................................................

.............................................

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IMPORTANT SAFETY INSTRUCTIONS

1.Read these instructions.

2.Keep these instructions.

3.Heed all warnings.

4.Follow all instructions.

5.Do not use this apparatus near water.

6.Clean only with dry cloth.

7.Do not block any ventilation openings. Install in accordance with the manufacturer's
instructions.

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

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 are provided for
your safety. If the provided plug does not fit 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 plugs,
convenience receptacles, and the point where they exit from the apparatus.

11.Only use attachments/accessories specified by the manufacturer.

12.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.

S3125A

13.Unplug this apparatus during lightning storms or when unused for long periods of time.

14.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.

15.Do not expose this apparatus to dripping or splashing and ensure that no objects filled
with liquids, such as vases, are placed on the apparatus.

16.To completely disconnect this apparatus from the AC Mains, disconnect the power
supply cord plug from the AC receptacle.

17.The mains plug of the power supply cord shall remain readily operable.

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The lightning flash with arrowhead symbol within an equilateral
triangle, is intended to alert the user to the presence of uninsulated
"dangerous voltage " within the product's enclosure that may be of
sufficient 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 product.

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

Welcome

Congratulations on your purchase of a Galaxy Audio Product!
Backed by over 25 years of proven real-world performance and a
3 year warranty, the product you have selected is one of the finest
personal monitoring devices available. Thank you for choosing
Galaxy Audio.
For full specifications of Galaxy Audio products,
visit www.galaxyaudio.com

Fill this out and retain for your records

Model:________________________________________
Serial number:__________________________________
Purchased from: ________________________________
Purchase date: _________________________________

To contact Galaxy Audio call 1-800-369-7768
write to P.O. BOX 16285 Wichita, Ks 67216-0285
or visit www.galaxyaudio.com

CAUTION: THESE PRODUCTS ARE CAPABLE OF PRODUCING

SOUND PRESSURE LEVELS WHICH MAY CAUSE PERMANENT

HEARING DAMAGE AFTER PROLONGED EXPOSURE.

BEFORE YOU BEGIN

Before using this product be sure to read and understand all
instructions in this manual pertaining to the model(s) you have
purchased.

DO...

Use a unidirectional microphone
Handle with care
Complete the registration card at the back of the manual

Read this manual

DON’T...

Expose any unit covered in this manual to rain or moisture
Plug-in or unplug the HOT SPOT while it is operating
(doing so may damage your amplifier)
(call Galaxy Audio
for repairs). Failure to do so may void your warranty.

Attempt to make any repairs yourself

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OHM’S LAW AND THE HOT SPOT

All unpowered HOT SPOTS have a 16 ohm impedance, and like
most professional-type speakers have jacks which are wired in
parallel (meaning the signal can travel into one jack and out of the
other).Think of each speaker as a “load” added to the amplifier.
The greater the number of speakers, the heavier the load. Adding
too many speakers can overload the amplifier, causing it to
overheat and distort. If the amplifier begins to distort, or if it
becomes hot to the touch, disconnect any extra speakers. One
easy way to determine the load on the amplifier is to use Ohm’s
law, which states: “The total impedance of N speakers in parallel is
equal to the reciprocal of the sum of the reciprocals. In equation
form:

Where Z1 is the impedance (or ohm rating) for the first speaker, Z2
for the second, and so on, for every speaker in the chain. This
equation calculates the total impedance of the speaker system,
which should NOT be lower than the minimum impedance rating of
the amplifier.

1

“

®

Z(Total)=

Z Z Z Z

EXAMPLE 1:

For one pair of speakers use the short form of the equation: the
product of the two speakers divided by the sum of the two
speakers is equal to the total impedance or the equivalent
impedance of the speaker system.

1 1 1 1 1

___

Z

___ ___ ___ ___

+

1

+ + +

2 3 4 N

Z x Z

1 2

Z=

Z + Z

1 2

This equation may be used to calculate the equivalent impedance
for additional speakers in two-speaker increments. Determine the
impedance of the first two speakers, substitute Z total for Z , and
include the next speaker. Repeat the process until all speakers
have been included. The result should be the same as with the first
method. A word of caution: polarity rules must be observed when
connecting multiple speakers. Polarity will not affect the Z, but can

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affect the quality and volume of the sound. If you are having
problems with any of these applications use Galaxy Audio’s
CRICKET Polarity and Continuity Test Set to check the polarity of
your cables.

16 x 16

Z= = 8 Ohms for two HOT SPOTS

16 + 16

88 x 16

Z= = 5.33 Ohms for three HOT SPOTS

+ 16

5.33

x 16

Z= = 4 Ohms (the total load)

5.33

+ 16

EXAMPLE 2:

As long as all of the speakers have the same impedance rating, the
equivalent impedance of the system is the rated impedance of one
speaker divided by the number of equivalent speakers.

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SOUND REINFORCEMENT BASICS

Avoiding feedback

Feedback (the shriek sometimes emitted by PA systems) occurs
when the microphone (or pickup) and speaker are positioned too
close together for a given level of volume. Once feed back occurs,
it will continue until either the volume is decreased or the
microphone or speaker is moved. Gain is the degree to which the
volume may be turned up before feedback begins. In setting up a
sound system, the objective is to maximize gain.

Monitor Placement

HOT SPOT Monitors should be positioned within arm's

®

reach of the performer.
Monitors should be placed to the rear of the
microphone being used by the performer.

Avoiding Distortion

Distortion in a monitor system usually occurs when the amplifier is
being over-driven, nearing the limits of its power output capability.
Over-driving the amplifier may be corrected by reducing the bass
frequencies in the monitor mix (low notes use a lot of power).
Since the HOT SPOT NEOLITE driver will not reproduce tones
lower than 200 Hz, reduce the low frequencies if the speaker
begins to distort. Distortion may also originate with a bad signal
source.

NEO DRIVER

Introduced in 2004, the NEOLITE driver is a state of the art
controlled bandwidth speaker that is included in all products
covered in this manual with the exception of the MSPA/MSPA-DC.
Tailored to reproduce a frequency range from 150 Hz-18 kHz, the
NEOLITE is manufactured with the rare earth element Neodymium

®

that has an extremely intense magnetic field in comparison to its
weight. This magnetic field is also very concentrated, allowing the
speaker to be placed near sensitive equipment that may be
affected by a strong magnetic force, such as a TV or a computer
monitor.

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HOT SPOT SERIES/MICRO SPOT VC

®

HSRG/HSVC The HOT SPOT was created as the solution to the
problem of musicians and public speakers not being able to hear
themselves while performing. The HOT SPOT's design is
unsurpassed in efficiently reproducing the crucial vocal range
frequencies.

Each Hot Spot comes with a built in stand mount that allows the
unit to be placed on nearly any microphone stand, close to the
performer, for true near field vocal monitoring (some microphone
stands may require the optional stand adaptor SA-1)

The Hot Spot VC (HSVC) comes with a volume control that not
only affects the volume of the unit, but also the impedance of the
unit. (See chart [T.1] pg.7 for more information about the volume
control).

MSVC

Like the Hot Spot series, the Micro Spot VC is also tailored to the
vocal frequencies. The Micro Spot can be mounted to a
microphone stand using the included yoke bracket kit. For
information regarding the bracket kit see, MOUNTING YOUR
MICRO SPOT SERIES SPEAKERS. [A.1]( )

pg. 13

Like the Hot Spot VC, the Micro Spot VC is also equipped with a
volume control. (Please refer to table [ ] pg. 7 for information

T.1

regarding the positions on the volume control).

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The HOT SPOT VC and

The impedance of the HOT SPOT VC and MICRO SPOT VC is determined by
the position of its volume control. Use the table below to determine the actual
impedance.

MICRO SPOT VC

[T.1]

POSITION

Full Clockwise

2nd

3rd
4th
5th
6th
7th

IMPEDANCE

16 ohms
23 ohms
33 ohms
46 ohms
64 ohms
90 ohms

130 ohms

Note: Each Hot Spot VC comes equipped with a Speakon and two 1/4"

speaker jacks, all of which are wired in parallel to allow easy "daisy chaining'
of multiple Hot Spots. The aluminum screw-on jack caps on the 1/4" jacks
should remain in place when those jacks are not in use to keep the cabinet
airtight and to avoid any unwanted "whistling"

dB REDUCTION

0

-3

-6

-9

-12

-15

-18

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