Kustom Music Mixer KPM8420 User Manual

OWNER'S MANUAL  
KPM8420  
Congratulations on the purchase of your new Kustom amp! Your new KPM8420  
Powered mixer successfully draws on more than 30 years of amplifier design and  
manufacturing experience at Kustom. This amp was planned from the ground up by  
our engineers to offer top-notch tone and dependable performance. Inside this manual,  
you'll find handy information about the amp's features. We wish you many years of  
enjoyment with your Kustom KPM8420 Powered Mixer.  
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FRENCH  
Danger  
L‘exposition a des niveaux eleves de bruit peut provoquer une perte permanente  
de l’audition, Chaque organisme humain reagit differemment quant a la perte de  
l’audition, mais quasiment tout le monde subit une diminution de I’acuite auditive  
lors d’une exposition suffisamment longue au bruit intense. Les autorites  
competentes en reglementation de bruit ont defini les expositions tolerees aux  
niveaux de bruits:  
6. Utiliser exclusivement un chiffon sec pour nettoyer ce produit.  
7. Ne bloquér aucune ouverture de ventilation. Ne pas placer le  
produit tout contre un mur ou dans une enceinte fernée, cela  
gênerait le flux d'air nécessaire au refroidissement.  
8. Ne pas placer le produit près de toute source de chaeur telle que  
radiateurs, arrivées d'air chaud, fourneaux ou autres appareils  
générant de la chaleur (incluant les amplificateurs producteurs  
de chaleur) .  
DURE EN HEURES PAR JOUR  
8
6
4
3
2
1
INIVEAU SONORE CONTINU EN dB  
90 93 95 97 100 103  
9. Ne pas négliger la sécurité que procure un branchement polarisé  
ou avec raccordement à la terre, Un branchement polarisé  
comprend deux fiches dont l'une est plus large que l'autre. Un  
branchement à la terre comprend deux fiches plus une troisième  
reliée à la terre. Si la fiche secteur fournie ne s'insert pas dans  
votre prise de courant. consulter un 'électricien afin de remplacer  
votre prise obsolète.  
Selon les autorites, toute exposition dans les limites citees ci-dessus, peuvent  
provoquer certaines pertes d’audition. Des bouchons ou protections dans  
l’appareil auditif ou sur l’oreille doivent etre portes lors de l’utilisation de ce  
systeme d’amplification afin de prevenir le risque de perte permanente de  
l’audition, Dans le cas d’expositions superieures aux limites precitees il est  
recommande, afin de se premunir contre les expositions aux pressions  
acoustiquese I evees potentielIement dangeure u ses, aux personnes exposees  
aux equipements capables de delivrer de telles puissances, tels ce systeme  
d’amplification en fonctionnement, de proteger l’appareil auditif.  
10. Protéger le cordon d'alimentation de tout écrasement ou  
pincement, particulièrement au niveau des fiches, des  
réceptacles utilisés et à l'endroit de sortie de l'appareil. Ne pas  
casser la fiche de terre du cordon d'alimentation.  
ATTENTION  
RISQUE DE CHOC ELECTRIQUE  
NE PAS OUVRIR.  
ATTENTION: AFIN DE LlMlTER LE RISQUE DE CHO ELECTR/QUE, NE  
PAS ENLEVER LE CHASSIS. NE CONTIENT PAS DE  
PIECES POUVANT ETRE REPAREE PAR L’UTILISATEUR.  
CONFER LE SERVICE APRES-VENTE AUX  
11. Utiliser uniquement les accessoires spécifiés par le constructeur.  
12. Utiliser uniquement avec le chariot de transport, le support, le  
trépied, la console ou la table spécifiés par le constructeur ou  
vendus avec l'appareil. Lors de l'utilisation d'un chariot, bouger  
avec précaution l'ensemble chariotlappareil afin d'éviter les  
dommages d'un renversement.  
REPARATEURS  
CE SYMBOLE A POUR BUT D'AVERTIR L'UTILISATEUR DE LA PRESENCE  
DE VOLTAGE DANGEREUX NON-ISOLE A L'INTERIEUR DE CE PRODUIT QUI  
PEUT ETRE DE PUISSANCE SUFFISAMMENT IMPORTANTE POUR  
PROVOQUER UN CHOC ELECTRIQUE AUX PERSONNES.  
13 Débrancher cet appareil lors d'orages ou s'il n'est pas utilisé  
pendant une longue période.  
CE SYMBOLE A POUR BUT D'AVERTIR L'UTILISATEUR DE LA PRESENCE  
D'INSTRUCTIONS D'UTILISATION ET DE MAINTENANCE DANS LES  
DOCUMENTS FOURNIS AVEC CE PRODUIT.  
14. Des précautions doivent être prises afin qu'aucun objet ne tombe  
et qu'aucun liquide ne se répande à l'intérieur de l'appareil par  
les orifics de ventilation ou n'importe quelle autre ouverture.  
15. Pour toutes interventions techniques s'adresser à un technicien  
qualifié.L'intervention technique est nécessaire lorsque l'appareil  
a été endommagé de n'importe quelle façon, comme par  
exemple si le cordon secteur ou sa fiche sont détériorés,si du  
liquide a coulé ou si des objets sont tombés à l'intérieur de  
l'apparei1,si l'appareil a été exposé à la pluie ou à l'humidité, s'il  
ne fonctionne pas normalement ou s'il est tombé.  
IMPORTANTES INSTRUCTIONS DE SECURITE  
1. Lire avec attention toutes les recommandations et précautions  
d'emploi avant d'utiliser ce produit.  
2. Toutes les recommandations et précautions d'emploi doivent être  
conservées afin de pouvoir s'y reporter si nécessaire.  
3. Lire et comprendre tous les avertissements énumérés dans les  
précautions d'emploi.  
4. Suivre toutes les précautions d'emploi pour utiliser ce produit.  
5. Ce produit ne doit pas être utilisé près d'eau, comme par  
exemple baignoires, éviers, piscine, sous-sol humides ... Etc.  
16. ATTENTI0N:Pour réduire le risque d'incendie ou de choc  
electrique ne pas exposer l'appareil à la pluie ou à l'humidité.  
3
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Front and Rear Panel Layout  
DIGITAL  
EFFECTS  
Effects 1  
Effects 2  
Effects 1  
Effects 2  
Effects 1  
Effects 2  
Effects 1  
Effects 2  
Effects 1  
Effects 2  
Effects 1  
Effects 2  
Effects 1  
Effects 2  
Effects 1  
Effects 2  
Effects 1Monitor  
Model KPM8420  
200x2 Watt Powered Mixer  
Effects 1 Main  
Small Room  
Monitor  
Limiter  
Up  
Large Room  
Small Hall  
Large Hall  
Chorus  
+12  
+6  
0
+6  
+3  
0
Effects 1  
Down  
Treble  
Mid  
Treble  
Mid  
Treble  
Mid  
Treble  
Mid  
Treble  
Mid  
Treble  
Mid  
Treble  
Mid  
Treble  
Mid  
-6  
Chorus/Rev  
Slapback  
Echo  
-12  
-5  
MONITOR  
MASTER  
-10  
100  
250  
500  
1K  
2K  
4K  
10K  
Effects 2 Monitor  
Bass  
Bass  
Bass  
Bass  
Bass  
Bass  
Bass  
Bass  
Feedback Notch  
Playback Volume  
Monitor Volume  
Effects 2 Main  
Short Room  
Main  
Limiter  
Monitor  
Main  
Monitor  
Main  
Monitor  
Main  
Monitor  
Main  
Monitor  
Main  
Monitor  
Main  
Monitor  
Main  
Monitor  
Main  
Up  
Med Room  
Small Hall  
Med Hall  
+12  
+6  
0
+6  
+3  
0
Effects 2  
Down  
Chorus  
-6  
Chorus/Rev  
Chorus/Hall  
Short Delay  
-12  
-5  
MAIN  
MASTER  
-10  
100  
250  
500  
1K  
2K  
4K  
10K  
Effects  
24-bit DIGITAL  
R
R
Feedback Notch  
Playback Volume  
Main Volume  
from CIRRUS LOGIC  
Pad  
Pad  
Pad  
Pad  
Pad  
Pad  
Pad  
Line/  
Inst  
Pad  
Line/  
Inst  
Power  
On  
Phantom  
Power On  
Effects 1  
Insert  
Effects 2  
Insert  
Footswitch  
Mute/Effects  
Channels  
On  
Mute  
Line/Mic  
Line/Mic  
Line/Mic  
Line/Mic  
Line/Mic  
Line/Mic  
Line/Mic  
Line/Mic  
MIXER  
STATUS  
FRONT PANEL  
JACKS  
POWER AMP  
OUTPUT  
CD/Tape  
Left Right  
A
SPEAKERS  
B
Phantom  
Power  
On  
Playback  
Left  
Right  
Subwoofer Output  
Off  
SERIAL NUMBER  
MODEL KPM8420  
POWERED MIXER  
Record Output  
Light Control Output  
DESIGNED IN USA  
MADE IN CHINA  
ON  
Preamp  
Output  
Power Amp  
Assignment  
Power Amp  
Input  
Main  
OFF  
Monitor  
Main  
POWER  
Main  
A
B
AC FUSE  
FUSE: T8A / 250V  
120V 60Hz 160W  
CAUTION  
CHASSIS SURFACE HOT  
CAUTION  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
Monitor  
Monitor  
ATTENTION  
RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR  
SUPERFICE DE CHASSIS CHAUDE  
AC  
POWER  
4
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CHANNELS  
5
6
7
8
9
10  
1
2
4
3
LINE/MIC Input Jacks:  
These are combination input jacks capable of  
receiving a Male-XLR for Balanced inputs such as  
microphones or a Male ¼” Plug for Line level and  
Instrument level devices.  
MID Control:  
Adjusts the amount of mid-range frequencies of the  
individual channels to the main output section.  
(NOTE: This control does not affect the monitor  
signal).  
PAD Switch:  
TREBLE Control:  
This switch attenuates the input signal by 12db in  
the out position. Press in when more input signal  
gain is needed. If the input sounds distorted, then  
use the out position.  
Adjusts the amount of Treble or high frequencies  
of the individual channels to the main output  
section. (NOTE: This control does not affect the  
monitor signal).  
LINE/INSTRUMENT Buttons (Channels  
7&8 Only):  
EFFECTS 2 Control:  
This control adjusts the amount of signal sent to the  
EFFECTS 2 master section. Note: This control is  
post fader, meaning the Effects 2 control gets it's  
signal from the MAIN volume control. The MAIN  
volume control must be turned up to allow signal  
to flow to the EFFECTS 2 Control.  
When the button is out, the ¼” input is configured  
to receive a standard Line level input such as a  
High-Z microphone, keyboard, drum machine, etc.  
When this button is pressed, the input is configured  
to receive an input from an electric or acoustic  
guitar. No additional preamps are necessary to  
amplify acoustic guitars with piezo pickups.  
EFFECTS 1 Control:  
This control adjusts the amount of signal sent to the  
EFFECTS 1 master section. Note: This control is  
post fader, meaning the Effects 1 control gets it's  
signal from the MAIN volume control. The MAIN  
volume control must be turned up to allow signal  
to flow to the EFFECTS 1 Control.  
MAIN Volume Control:  
Adjusts the volume of the individual channels to  
the MAIN output section.  
MONITOR Volume Control:  
Adjusts the volume of the individual channels to  
the MONITOR output section.  
BASS Control:  
Adjusts the amount of bass or low frequencies of  
the individual channels to the main output section.  
(NOTE: This control does not affect the monitor  
signal).  
5
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DIGITAL EFFECTS  
14  
13  
Effects 1Monitor  
EFFECTS 1  
Effects 1 Main  
Small Room  
Up  
Large Room  
Small Hall  
Large Hall  
Chorus  
12  
11  
Effects 1  
Down  
Chorus/Rev  
Slapback  
Echo  
18  
17  
Effects 2 Monitor  
EFFECTS 2  
Effects 2 Main  
Short Room  
Up  
Med Room  
Small Hall  
Med Hall  
16  
15  
Effects 2  
Down  
Chorus  
Chorus/Rev  
Chorus/Hall  
Short Delay  
EFFECTS 1  
EFFECTS 2  
EFFECTS 1 DOWN Button:  
EFFECTS 2 DOWN Button:  
This button scrolls down through the Digital  
Effects sounds. Pressing this button when the  
(Echo) effect is lit will result in resetting the  
selected sound to the top (Small Room).  
This button scrolls down through the Digital  
Effects sounds. Pressing this button when the  
(Short Delay) effect is lit will result in resetting the  
selected sound to the top (Short Room).  
EFFECTS 2 UP Button:  
EFFECTS 1 UP Button:  
This bottom scrolls up through the Digital Effects  
sounds. Pressing this button when the (Short  
Room) effect is lit will result in resetting the  
selected sound to the bottom (Short Delay).  
This button scrolls up through the Digital Effects  
sounds. Pressing this button when the (Small  
Room) effect is lit will result in resetting the  
selected sound to the bottom (Echo).  
EFFECTS 2 MAIN Control:  
This controls the amount of Effects 2 that is sent to  
the MAIN Master Section.  
EFFECTS 1 MAIN Control:  
This controls the amount of Effects 1 that is sent to  
the MAIN Master Section.  
EFFECTS 2 MONITOR Control:  
This controls the amount of Effects 2 that is sent to  
the MONITOR Master Section.  
EFFECTS 1 MONITOR Control:  
This controls the amount of Effects 1 that is sent to  
the MONITOR Master Section.  
6
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MAIN AND MONITOR MASTER  
19  
25  
24  
30  
29  
Monitor  
Main  
Limiter  
Limiter  
+12  
+6  
0
+12  
+6  
0
+6  
+3  
0
+6  
+3  
0
-6  
-6  
23  
-5  
-5  
-12  
-12  
-10  
-10  
100  
250  
500  
1K  
2K  
4K  
10K  
100  
250  
500  
1K  
2K  
4K  
10K  
Feedback Notch  
Playback Volume  
Monitor Volume  
Feedback Notch  
Playback Volume  
Main Volume  
20  
21  
22  
26  
27  
28  
MONITOR MASTER  
MONITOR MASTER GRAPHIC EQ:  
MAIN MASTER  
MAIN MASTER GRAPHIC EQ:  
This set of slide controls adjusts specific  
frequencies in order to tailor the overall sound to  
an acoustical environment or an intended sound.  
This set of slide controls adjusts specific  
frequencies in order to tailor the overall sound to  
an acoustical environment or an intended sound.  
FEEDBACK NOTCH (MONITOR):  
FEEDBACK NOTCH (MAIN):  
This control is a narrow notch that can remove a  
problem frequency that may causing excessive  
feedback. To activate this feature, slowly turn the  
control to find the feedback problem area. This  
subtlety turns down a small area of frequencies,  
thus removing the feedback without greatly  
affecting the overall sound. Turning this knob full  
counter-clockwise will defeat the feedback filter.  
This control is a narrow notch that can remove a  
problem frequency that may causing excessive  
feedback. To activate this feature, slowly turn the  
control to find the feedback problem area. This  
subtlety turns down a small area of frequencies,  
thus removing the feedback without greatly  
affecting the overall sound. Turning this knob full  
counter-clockwise will defeat the feedback filter.  
PLAYBACK VOLUME (MONITOR):  
This control adjusts the amount of input from the  
Playback input jacks (Rear Panel). This set of  
Stereo RCA jack will accept any Line-Level audio  
sources such as: CD, MP-3, DVD, HARD DISC &  
TAPE PLAYER. NOTE: This controls passes  
signal directly to the MONITOR Master section  
and is not affected by the Channels ON/MUTE  
function.  
PLAYBACK VOLUME (MAIN):  
This control adjusts the amount of input from the  
Playback input jacks (Rear Panel). This set of  
Stereo RCA jack will accept any Line-Level audio  
sources such as: CD, MP-3, DVD, HARD DISC &  
TAPE PLAYER. NOTE: This controls passes  
signal directly to the MONITOR Master section  
and is not affected by the Channels ON/MUTE  
function.  
MONITOR MASTER Control:  
This control adjusts the master volume of the  
Monitor section.  
MAIN MASTER Control:  
This control adjusts the master volume of the Main  
section.  
MONITOR LED METER:  
This indicates the level of Monitor Preamp output.  
The number values are in dBV (1VRMS = 0dBV).  
MAIN LED METER:  
This indicates the level of Main Preamp output.  
The number values are in dBV (1VRMS = 0dBV).  
LIMITER LED:  
LIMITER LED:  
This indicates Power Amp A has reached full  
clean output. If the input signal to the power amp  
increases after the LED is lit, it will be limited to  
protect the speakers. Because this limiter is built  
into Power Amp A, the LED only shows that the  
monitors are at full output when assigned to it (See  
page 9 for information on assigning power amps).  
This indicates Power Amp B has reached full clean  
output. If the input signal to the power amp  
increases after the LED is lit, it will be limited to  
protect the speakers. Because this limiter is built  
into Power Amp B, the LED only indicates the  
Mains are at full output when assigned to it (See  
page 9 for information on assigning power amps).  
7
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MIXER STATUS AND FRONT PANEL JACKS  
35  
36  
37  
Main Volume  
from CIRRUS LOGIC  
31  
32  
33  
34  
Power  
On  
Phantom  
Power On  
Effects 1  
Insert  
Effects 2  
Insert  
Footswitch  
Mute/Effects  
Channels  
On  
Mute  
MIXER STATUS  
FRONT PANEL JACKS  
POWER ON LED:  
When lit, power is being delivered to the mixer.  
EFFECTS 1 INSERT Jack:  
This ¼” STEREO jack allows an external effect to  
be used with your KPM8420. TIP = Effects Send.  
Ring = Effects Return.  
CHANNELS ON LED:  
When lit, the channels will deliver signal to the  
master sections.  
EFFECTS 2 INSERT Jack:  
This ¼” STEREO jack allows an external effect to  
be used with your KPM8420. TIP = Effects Send.  
Ring = Effects Return.  
PHANTOM POWER LED:  
When lit, this LED indicates that Phantom power  
is being delivered to the XLR jacks.  
FOOTSWITCH (MUTE/EFFECTS):  
This ¼” Stereo jack accesses the Channel Mute  
and Effects On/Off Functions. TIP = Effects  
Mute. RING = Channel Mute. Suggested  
footswitch = Kustom KAC FS202  
MUTE Button:  
When pressed, this button will MUTE the input  
channels. This switch is defeated when the  
footswitch jack is used. NOTE: Playback inputs  
will still function when channel mute is on.  
8
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PATCH BAY  
CD/Tape  
Left  
Right  
Phantom  
Power  
38  
41  
42  
On  
Playback  
Subwoofer Output  
Left  
Right  
Off  
39  
40  
Record Output  
Light Control Output  
Preamp  
Output  
Power Amp  
Assignment  
Power Amp  
Input  
Main  
43  
44  
47  
48  
Monitor  
Main  
Main  
A
B
Monitor  
Monitor  
45  
46  
CD / TAPE PLAYBACK Jacks:  
PREAMP OUTPUT MONITOR:  
This ¼” Mono jack delivers a line level output  
from the MONITOR Master section.  
These RCA jacks are used to play audio from CD,  
Tape, Computer, DVD, Hard Disc, MP-3 or other  
line level audio source. NOTE: Use the  
PLAYBACK controls (#20 & #24) to adjust the  
volume of the playback to the Main and Monitor  
sections.  
POWER AMPASSIGN A Switch:  
This switch determines which master section will  
drive the A power-amp. Place the switch in the UP  
position to have the MAIN mix signal to the A  
power-amplifier. Place the switch in the down  
position to have the MONITOR mix signal to the A  
power-amplifier.  
CD / TAPE RECORD OUTPUT Jacks:  
These RCA jacks deliver a MONO Line level  
output to a recording device such as Tape  
Recorder, Computer, Recordable DVD, Hard Disc,  
MP-3 and more.  
POWER AMPASSIGN B Switch:  
This switch determines which master section will  
drive the B power-amp. Place the switch in the UP  
position to have the MAIN mix signal to the B  
power-amplifier. Place the switch in the down  
position to have the MONITOR mix signal to the  
B power-amplifier.  
PHANTOM ON/OFF Switch:  
This switch turns on the 40V phantom power to the  
XLR input Jacks. This power supply is designed  
to provide power for condenser microphones and  
other devices.  
SUB WOOFER OUTPUT Jack:  
This is a low pass sub woofer output. Crossover  
point = 150 hz @ 12db/oct.  
POWER AMP INPUT A:  
This ¼” Mono jack allows the A power-amplifiers  
to be used with an external Line level input.  
NOTE: When used, this jack will interrupt the  
signal flow from the mixer section of the  
KPM8420.  
LIGHT CONTROLLER OUTPUT Jack:  
This is selective band-pass output designed to  
deliver a Line level audio trigger signal to Lighting  
Controller devices.  
POWER AMP INPUT B:  
This ¼” Mono jack allows the B power-amplifiers  
to be used with an external Line level input.  
NOTE: When used, this jack will interrupt the  
signal flow from the mixer section of the  
KPM8420.  
PREAMP OUTPUT MAIN:  
This ¼” Mono jack delivers a Line level output  
from the MAIN Master section.  
9
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POWER AMP OUTPUTS, AC POWER  
49  
50  
A
SPEAKERS  
B
MODEL KPM8420  
POWERED MIXER  
52  
53  
ON  
51  
OFF  
POWER  
AC FUSE  
FUSE: T8A / 250V  
120V 60Hz 160W  
POWER AMP OUTPUT  
AC POWER  
POWER ON / OFF Switch:  
SPEAKERS A:  
These two ¼” jacks deliver the power from the A  
power-amp to the speakers.  
The KPM8420 is ON when the switch is in the UP  
position. Press the switch to the DOWN position to  
turn the KPM8420 off. Always remove the AC  
plug from the wall when not in use.  
SPEAKERS B:  
These two ¼” jacks deliver the power from the B  
power-amp to the speakers.  
AC Power Cord Receptacle:  
Insert the AC cord (Provided) firmly into the AC  
connector. NOTE: Replace the AC power cord if  
protective jacket is damaged or ground pin is  
damaged or removed.  
MINIMUM LOAD (Impedance) Per Channel:  
4 OHMS  
POWER RATING Per Channel:  
200 Watts@4 ohms, 125 Watts@8 ohms. Both  
amps driven to 100%  
FUSE:  
The fuse is located in a housing just below the  
receptacle. Replace only with same type and size.  
To remove the fuse, pull the tab located above the  
fuse symbol away from the fuse housing.  
Caution: Use speakers rated at 125 Watts @ 8  
ohms or higher. Severe damage to the speakers is  
possible if too low of wattage speaker is used.  
10  
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FAQ Frequently Asked Questions:  
1. How many speakers can I use with the KPM8420?  
6. Can I use another non-powered mixer with my  
KPM8420 to get more channels?  
ANSWER: Most speaker cabinets today are 8-ohms.  
For the sake of this question we will assume this is  
the case. You can use a total of four 8-ohm speakers  
with the KPM8420: Two for the A power-amp and  
two for the B power-amp . DO NOT plug all four  
speakers into one power-amp.  
ANSWER: YES! Take the Line level output of the  
external non-powered mixer and connect to one of  
the LINE ¼” inputs . Make sure the pad switch  
is NOT pressed in. Set the individual channel tone  
control to the twelve o'clock position and bring up  
the channel volume control as needed.  
2. Can I use two different effects on my vocal mics?  
ANSWER: Yes! One popular setting for vocal mics is  
to use one digital effects section for reverb and the  
other effects section for delay. Here is an example:  
Set Effects 1 to ECHO and Effects 2 to SMALL  
HALL. Adjust the amount of reverb first by turning  
up the EFFECTS 2 control on the desired individual  
channel. Then, add the desired amount of ECHO by  
turning up the EFFECTS 1 control on the same  
individual channel. Set levels to obtain the desired  
effect.  
7. Can I use an external Power-amp with my  
KPM8420?  
ANSWER: Yes! For MAIN Master feed, connect a  
shielded high-Z instrument cable from the Preamp  
output MAIN jack to the Line level input of the  
desired external power-amp.  
8. Not all of my microphones are condenser type.  
Will using the Phantom Power in the KPM8420  
damage my non-condenser mics?  
ANSWER: No. You can safely use a combination of  
condenser and dynamic microphones at the same  
time.  
3. Can I use one effects section for my vocals and the  
other for my instruments?  
ANSWER: Yes! This is one of the truly unique  
features of the KPM8420. Here is an example: a  
little Chorus on an instrument can really sweeten the  
sound, but chorus effects on vocals are a disaster.  
First set up the Instrument channels: Set the sound  
of EFFECTS 2 to Chorus or Chorus/Rev in the  
master section of the mixer. Turn up the EFFECTS 2  
send on the individual instrument channels to the  
desired level. Now the vocal channels: Set the  
sound of EFFECTS 1 to one of the reverb selections.  
Turn up the EFFECTS 1 send on the individual vocal  
channels to the desired level.  
9. I have the Digital Effects Control knobs on  
Channel and Monitor turned up but still do not  
hear any effects through the monitors. Why?  
ANSWER: The Main volume on the channel is not  
turned up . Because the effects send from the  
channels is Post Main, there must be signal present  
at that channels main output.  
9. I have a channel that I want in the Mains but not  
in the monitors. The Monitor Volume on the  
channel is all the way down but still comes  
through the monitors. Where is this coming from?  
ANSWER: It is coming from one or both of the  
4. Can I use a sub-woofer without using the fixed  
crossover from the KPM8420?  
ANSWER: Yes! Use the MAIN preamp output jack  
to feed a full range main signal to your sub-woofer  
or active crossover and power-amp.  
Digital Effect Monitor controls  
one or both of the channel Effect controls  
being turned up. Fix the problem by turning down  
Effect 1 or 2 on the channel, or Effect 1  
Monitor or Effect 2 Monitor on the digital  
effect.  
&
along with  
&
5. Can I use both Power-amps for mains or  
monitors?  
ANSWER: Yes! To use both power-amps for mains,  
set the POWER AMP ASSIGNMENT switches  
&
to the UP (MAIN) position. To use both power-  
amps for monitors, set the POWER AMP  
ASSIGNMENT switches (#41&#42) to the DOWN  
(MONITOR) position.  
11  
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KPM8420  
Specifications  
Model  
KPM8420  
200W per channel  
180W per channel  
8 Channel Dual Powered Mixer  
4 Ohms @ 5% THD  
4 Ohms @ 0.4% THD  
Actual response is tailored to speaker cabinet for  
accurate acoustical response.  
Output Power  
Frequency Response  
20HZ-20kHz  
Measured at 1VRMS (0dBv) at record output, effects  
send, preamp output, or Main output.  
Mic Input, Rs=150 ohm, 20-20kHz  
Residual Noise, all level controls 0% (minimum)  
Nominal System Noise, all level controls at 50%  
Total Harmonic Distortion  
Less than 0.4%  
-115dB  
-55dB  
-45dB  
Hum & Noise  
System Gain  
All Measurements made at 1kHz  
90 dB  
77dB  
72dB  
60dB  
36dB  
50dB  
50dB  
50dB  
70dB  
Mic to Power Amp (Ch 1 - Ch8) Pad Off  
Mic to Power Amp (Ch 1 - Ch8) Pad On  
Line to Power Amp (Ch 1 - Ch8) Pad Off  
Line to Power Amp (Ch 1 - Ch8) Pad On  
Playback to Power Amp  
Mic to Main out, Pad On  
Mic to Monitor out, Pad On  
Mic to Record out, Pad On  
Channel to Channel, 1kHz  
Crosstalk  
Input Channel Equalization  
Master Equalization  
Special curve that adjusts Bass, Mid, and Treble frequencies  
100 to 10kHz, 7 Band, 1 Octave Graphic, all ±12dB  
Two 24 bit DSP modules, 8 effects per module.  
Module 1:  
Small room, Large room, small hall, large hall, chorus, chorus reverb, slapback, echo  
Digital Effects  
Module 2:  
Short room, Med room, small hall, Med hall, chorus, chorus reverb, chorus hall, short delay  
Phantom Power  
Footswitch  
+40V Applied to all Mic inputs when active  
Digital effects On/Off and Channel ON/OFF (playback remains active)  
Recommended: KUSTOM model KAC-FS-202 (dual switch with LEDs)  
USA/Canada  
Europe  
UK  
Australia  
Japan  
mm/kg  
120VAC/60Hz, 300W nominal  
230VAC/50Hz, 300W nominal  
230VAC/50Hz, 300W nominal  
240VAC/50Hz, 300W nominal  
100VAC/50-60Hz, 300W nominal  
292 (Height) x 495 (Width) x 305 (Depth), 15.6kg  
11.5 (Height) x 19 (Width) x 12.1 (Depth), 34.4 lbs  
Power Requirements  
Dimensions  
Inches/Pounds  
12  
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R E T I M I L  
R E W O P  
R E T I M I L  
R E W O P  
S S U B R O T I N O M  
S S U B N I A M  
2 S S U B S T C E F F E  
1 S S U B S T C E F F E  
V 0 4 +  
r e w o P m o t n a h P  
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EC Declaration of Conformity  
We:  
Kustom Musical Amplification Inc.  
4940 Delhi Pike  
Cincinnati, OH 45238  
Tel: 1-513-451-5000 Fax: 1-513-347-2192  
Declare that the product  
Product name:  
Kustom  
Product model number:  
KPM8420  
to which this declaration relates is in conformity with the following standards;  
EN55013 (A12) : 1995  
Limits and methods of measurement of radio disturbance characteristics of broadcast receivers and  
associated equipment.  
EN55020: 1995  
Electromagnetic immunity of broadcast receivers and associated equipment.  
Limits for harmonic current emissions (equipment input current < 16A per phase).  
EN61000-3-2: 1995  
EN61000-3-3: 1995  
Limitation of voltage fluctuations and flicker in low voltage supply systems for equipment with rated  
currents < 16A.  
EN55103-1: 1995  
EN60065: 1994  
Electromagnetic Compatibility - Product family standard for Audio, Video Audio-visual and  
entertainment Lighting Control Apparatus.  
Safety requirements for main operated electronic and related apparatus for household and similar  
general use.  
Following the provisions of EU Council Directive(s): 72/73 EEC and 89/336/EEC.  
We the undersigned, hereby declare that the equipment specified above conforms to the aforementioned directive(s).  
Name of authorized person: Rick Kukulies, VP Engineering  
Signature:______________________  
Date: 05 June 2001  
Kustom Musical Amplification Inc. (BC Rich)  
4940 Delhi Pike  
Cincinnati, OH 45238  
Tel: 1-513-451-5000 Fax: 1-513-347-2192  
14  
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Kustom Inc., 4940 Delhi Pike, Cincinnati, OH • USA  
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