Motion Sound KeyPro KP-500SN User manual

Motion Sound is a division of XP Audio Inc.
KeyPro KP-500SNStereo3DAmplifier
Designed and manufactured in the USA.
12/30/08

-ImportantSafetyInstructions-
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adrycloth.
7. Donotblockanyventilationopenings.
8. Installandoperateinaccordancewiththemanufacturer’sinstructions.
9. Donotinstallnearanyheatsourcessuchasradiators,heatregisters,stoves,orotherapparatus(includingamplifiers)thatproduceheat.
10. Donotdefeatthesafetypurposeofthepolarizedorgrounding‐type(earthing‐type)plug.ForU.S.applications,apolarizedplughastwo
bladeswithonewiderthantheother.Agrounding–type(earthing‐type)plughastwobladesandathirdgrounding(earthing)prong.The
widebladeandthethirdprongareprovidedforyoursafety.Iftheprovidedplugdoesnotfitintoyourpoweroutlet,consultanelectricianfor
replacementoftheobsoleteordamagedoutlet.
11. Protectthepowercordfrombeingwalkedonorpinchedparticularlyatplugs,conveniencereceptacles,andthepointwheretheyexitfrom
theapparatus.
12. Onlyuseattachmentsandaccessoriesspecifiedbythemanufacturer.
13. Useonlywitha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.
14. Unplugthisapparatusduringlightningstormsorwhenunusedforlongperiodsoftime.
15. Referallservicingtoqualifiedservicepersonnel.Servicingisrequiredwhentheapparatushasbeendamagedinanyway,suchasthepower‐
supplycord/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
:
TO REDUCE THE RISK OF ELECTRIC
SHOCK
DO NOT REMOVE COVER (OR BACK)
NO USER-SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED PERSONNEL
ATTENTION: POUR EVITER LES RESQUES DE
CHOC ELECTRIQUE, NE PAS ENLEVER LE
COUVERCLE. AUCUN ENTRETIEN DE PIECES
INTERIEURES PAR L’USAGER. CONFIER
L’ENTRETIEN AU PERSONNEL QUALIFIE.
AVIS: POUR EVITER LES RISQUES D’INCENDIE
OU D’ELECTROCUTION, N’EXPOSEZ PAS CET
ARTICLE
A LA PLUIE OU A L’HUMIDITE


!
RISK OF ELECTRIC SHOCK

DO NOT OPEN
!
RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR


Duration
Per Day In
Hours
Sound Level
dBA,
Slow Response
Typical Example
8
6
4
3
2
1.5
1
0.5
0.25 or less
16. ThisMotionSoundamplifierhasbeendesignedwithClass‐Iconstructionand
mustbeconnectedtoamainssocketoutletwithaprotectivegrounding
(earthing)connection(thethirdgrounding/earthingprong).
17. ThisMotionSoundamplifierhasbeenequippedwithasinglepole,rocker‐
styleACmainspowerswitch.Thisswitchislocatedontherearpaneland
shouldremainreadilyaccessibletotheuser.
18. ThisapparatusdoesnotexceedtheClassA/ClassB(whicheverisapplicable)
limitsforradionoiseemissionsfromdigitalapparatusassetoutintheradio
interferenceregulationsoftheCanadianDepartmentofCommunications.
ATTENTION – Le present appareil numérique n‘émet pas de bruits radioélectriques dépassant las limites applicable aux appareils numériques de
class A/de class B (selon la cas) prescrites dans le réglement sur le brouillage radioélectrique édicté par les ministere des communications du
Canada.
19. Exposure to extremely high noise levels may cause permanent hearing loss. Individuals vary considerably in susceptibility to noise-induced
hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time. The U.S. Government’s
Occupational Safety and Health Administration (OSHA) has specified the permissible noise level exposures shown in the following chart.
According to OSHA, any exposure in excess of these permissible limits could result in some hearing loss. To ensure against potentially
dangerous exposure to high sound pressure levels, it is recommended that all persons exposed to equipment capable of producing high sound
pressure levels use hearing protectors while the equipment is in operation. Ear plugs or protectors in the ear canals or over the ears must be
worn when operating the equipment in order to prevent permanent hearing loss if exposure is in excess of the limits set forth in the following
chart.
CAUTION
WARNING – To reduce the risk
of fire or electric shock, do not
expose this apparatus to rain or
moisture.
Th
e
li
g
h
ten
i
ng
fl
as
h
w
i
t
h
arrow
h
ea
d
sym
b
o
l
w
i
t
hi
n an equ
il
atera
l
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.
Le symbole clair avec point de fleche l’interieur d’un triangle
equilateral est utilis pour alerter l’ulilisateur de la presence l’interieur
le coffret de “voltage dangereux” non isole d’ampleur suffisante pour
constituer un risqué d’electrocution.
Th
e exc
l
amat
i
on po
i
nt w
i
t
hi
n an equ
il
atera
l
tr
i
ang
l
e
i
s
i
nten
d
e
d
to a
l
ert
the user to the presence of important operating and maintenance
(servicing) instructions in the literature accompanying the apparatus.
Le point d’exclamation l’interieur d’un triangle equilateral est employ
pour alerter l’ulilisateur de la presence d’instructions importantes pour
le foncionnement et l’entretien (service) dans le livret d’instruction
acom
p
a
g
nant l’a
pp
areil.

3
-INTRODUCTION-
The Motion Sound KeyPro KP-500SN stereo hi-fidelity amplifier provides premium sound quality
and portability for professional and amateur musicians alike. The encompassing three-dimensional
stereo sound is a true compliment to modern keyboard synthesizers, digital pianos, sound modules,
guitar synthesizers and any application that can benefit from stereo sound.
Although operation may seem intuitive, we suggest that you read this manual for helpful tips and/or
details about controls and operation of the KP-500SN in various venues and environments.
-SPECIFICATIONS-
Input Design Range – 300 mV RMS, 2.5 v RMS max
Input Impedance – 100K
Power Amplifier – 250-watts/channel (500-watts total)
Speakers – Two 12” Eminence Deltalite 250-watts, 8 ohms
Horns – Four 80-watt 3.5X3.5 Ferro cooled dynamic, 8 ohms
Frequency Response – 45-17 kHz
Horn Crossover – 3 kHz
Power Voltage Frequency Fuse (slo-blo)
US 120 VAC 50/60 Hz 8 amp
Europe 230 VAC 50/60 Hz 4 amp
Japan 100 VAC 50/60 Hz 8 amp
Fuse – Located in the AC inlet module (Replace with correct value only)
Finish- Two-part Polymaric™polymer finish.
Poplar wood cabinet tough, light weight construction
Dimensions – H 18 1/2”, W 26 1/4”, D 17” Weight 48 lbs.
-Quick Start Setup-
After powering on and connecting your signal source:
1. Set all controls to “5”
2. Master volume – quiet room 3-5, loud band 7-10
3. Master low bass to “5”

4
-Sound –
-What to Expect-
The quality of the stereo 3D expander is totally dependent on a good stereo signal source; it will NOT
create a stereo image from a mono source. The KP-500SN is ideally placed 3-6 ft. in back of you at
about 2 ft. above the floor. Your position should be at amplifier center for best expander stereo effect.
Experience has shown that placing the amplifier on the floor can provide more bass, but depending on
how close you are to the KP-500SN, you may not hear enough treble. Tilting the KP-500SN back
slightly can help direct more “highs” toward you.
All rooms will sound different; experimenting with amplifier placement can improve the sound for
your audience.
-Control Panel-
The KP-500SN has two input channels and a master control area. Channels one and two are the same.
Inputs: Two sets of unbalanced ¼ stereo pairs. If you have a mono signal and want both channels to
respond, use the right/mono input. All inputs are available simultaneously.
Micophone input: A balanced XLR microphone input (located on rear panel) is assigned to channel
two’s volume and EQ controls. It is a mono input to left and right channels and XLR line outputs. The
XLR input works simultaneously with channel two’s ¼” inputs. The XLR input is AC coupled so
phantom powered microphones can be used. (The KP-500SN does not supply phantom power).
Volume works in conjunction with your signal source volume and volume pedal (if used). Typical
setting is 4-6 and should be adjusted so that your signal source/volume control covers the desired
range.
Expand control increases the stereo spread. The control is totally dependent on the quality of a stereo
source. Mono=No expand. Too much expand may change the tone of some sounds. Use only enough
for effect and then adjust the channel EQ if needed.
Bass <150 Hz Low frequency boost/cut. If you have a bass player, set this at about 5. Bass uses a lot
of power and can make your sound muddy, adjust carefully to preference. If you use the <100 Hz
subwoofer output, read that section first.
Middle controls frequencies from 150 Hz to 3 kHz. This is the most important frequency range of
most instruments---set at “5” and then vary according to preference.
Treble adjusts sound above 3 kHz. Treble is the highest frequency content of sound and the most
directional part of the spectrum. Set at 5 initially and adjust to preference. The highest frequencies do
not travel very far in air, so don’t fry your ears with searing highs that will never reach an audience.

5
Master Volume
Normally set at 5-8. If you are playing quietly and input levels are within the normal range, you can
adjust the master volume for quiet amplifier operation. Higher numbers 5-10 allow maximum
headroom, but produce more pre-amp “hiss”. Higher settings should be used in loud band situations.
Master Low Bass
The low bass master control provides boost/cut at 50 Hz. These frequencies are important for
reproducing sounds such as grand piano and Organ. Low frequencies use a lot of power and can
muddy up your sound when a bass player is in the mix. Use only enough to get the sound you areafter.
XLR Line Outputs
Left and right channels are output for feed to mixing boards. The XLR line outputs will work very
well in most venues. If there is a very large difference in ground potential between the KP-500SN and
the mixing board in use, you may need to use transformer isolation or “ground float” boxes to
eliminate noise. Many older buildings can have ground problems. Check AC outlets to prevent shock
and to ensure proper KP-500SN grounding. Volume, expand and EQ affect XLR output signals.
Slave Output
Outputs left and right audio from the master volume control to a slave amplifier. The connector is
standard “midi” style for convenience in obtaining cords but does not send midi data. The cord must
use all five conductors. You can use several slave amplifiers, take just the right amount of power to a
venue, and always have stereo 3D sound! Play next to a Guitar stack? No problem!
Subwoofer Output
¼ unbalanced, 300 mv rms, 12 db oct @ 300 Hz. This output is used for bass or sub-woofer
augmentation of the KP-500SN, such as with a Motion Sound SW-15 Subwoofer. Set the bass
control on the KP-500SN at 5 or lower and let your external bass amplifier handle the lows. The KP-
500SN will then have full power available for mid and high frequencies. Using the subwoofer output
does not disable those frequencies from the KP-500SN.
Maintenance
Finish: Clean with mild soap and water if needed. No other maintenance is necessary.
Speakers: Remove screws from the grill cover and remove the grill. The 12” speakers are mounted
from the front with screws into steel inserts. The horns are mounted from the rear with screws and
nuts. Wires from the amplifier to the 12” speakers and ferro cooled dynamic horns are removable
spade types. If you change speakers, use 8 ohm only.
Amplifier: The entire amplifier chassis is mounted from the rear outside. Remove all screws on top
and around the back of the amplifier chassis. You must remove the speaker wires from the front
(remove 12” speakers first) before the amp chassis can be entirely removed.

6
Motion Sound
Service and Warranty
**Non-transferable warranty-applies only to the original owner.
**Any unit sold as a second, damaged product, scratch & dent, old store stock, rental units, will
NOT be covered under the Motion Sound warranty.
The cabinet, electrical and associated mechanical parts and workmanship is warranted for a
period of 1 year from date of purchase, with the following exceptions:
•Any speaker, horn, or diaphragm is covered for 90 days
•Fuses are not covered
•Any Motion Sound pedal is covered for 90 days
•Any product that has been modified altered or repaired outside of an authorized Motion
Sound facility is not covered.
•This warranty is void if the product has been physically or electrically abused.
•Damage unrelated to intended use is not covered
All warranty repair will require a return authorization number (RA#).
Call Motion Sound at 801-265-0917 for authorization before any repairs are done. Without a RA# Motion
Sound is not responsible to pay the warranty or parts cost. Motion Sound does have authorized repair
centers we can refer you to, but again a RA# must be issued. If there is not an authorized repair center in
your area it is it is the owners’ responsibility to return the unit insured freight prepaid to the Motion Sound
Service Department. Shipping Address:
4426 South 450 West, Suite G
Salt Lake City, UT 84123
For units to be repaired under warranty a dated bill of sale must accompany the unit
or your warranty card must be on file at Motion Sound. Use the original carton and packing
material to ship your unit. Motion Sound is not responsible for damage due to improper
packing!.
NOTE: If Motion Sound or any authorized service center finds nothing wrong with the product it will
be the owners responsibility to pay the cost of service, which includes packaging, shipping, plus a
minimum 1 hr service fee.
This warranty gives you certain rights. You may also
have other rights, which may vary, from state to state.