American Audio Mixer 19 MXR User Manual

							User Guide 
and Reference Manual
    10/12
19MXR
6122 S. Eastern Ave.
Los Angeles, CA. 90040
www.AmericanAudio.us       
						

							©American Audio®   -   www.americanaudio.us   -   19MXR Instruction Manual Page 2
MAIN FEATURES...................................................................\
.................................................................2
ELECTRICAL PRECAUTIONS.............................................................\
...................................................3
SAFETY PRECAUTIONS.............................................................\
...........................................................5
INTRODUCTION....................................................................................................................................6
SET-UP PRECAUTIONS.............................................................\
............................................................6
UNPACKING..................................................................\
.......................................................................7
QUICK START........................................................................................................................................7
CONTROLS AND FUNCTIONS
 FRONT PANEL...........................................................................................................\
.................8
 REAR PANEL............................................................................................................................12                                                                        \
                                        
MIDI TABLE....................................................................\
.......................................................................1\
4
TYPICAL MIXER SET-UP........................................................................\
..............................................16
CLEANING......................................................................................................................18
CROSSFADER REPLACEMENT...........................................................................................................18
TROUBLESHOOTING......................................................................................................................19
WARRANTY.......................................................................................................................................\
..20
SPECIFICATIONS.....................................................................................................................21
  19MXR                                          CONTENTS
 19MXR                                            MAIN FEATURES
•	 Feather	Fader	Plus
•		 2	 Phono,	 4	Line,	 &	3	Mic	 Inputs	
•		 Balanced	 XLR	Outputs
•		 High	 quality	 Feather	 Fader™	 for	smooth,	 clean		
	 cross	 fades	(replaceable)
•		 Bass,	 Mid,	and	Treble	 for	each	 channel
•		 Gain,	 Bass,	and	Treble	 for	Mics	 1	&	 2
•		 Microphone	 Reverb	Control
•		 USB	 Connection
•		 High	 level	headphone	 output	
•		 Cue	 mixing	
•		 Turntable	 ground	connectors	 located	on	the	 rear	 	
	 panel
•		 Adjustable	 Crossfader	Curve	
•		 On/Off	 switch	for	channel	 assign	
•		 Gain	 control	 for	each	 channel
•		 100V~240V	 50/60Hz	(Universal)	
•		 	Master	Level	Indicator	
•	 	Balanced	XLR	Output	
•	 	Built-In	DSP	D-Core™	Sound	Card
•		Controller	Mode:	USB	Output	Streams	are		 	
			routed	through	master	and	headphone	out-
			puts	 
						

							©American Audio®   -   www.americanaudio.us   -   19MXR Instruction Manual Page 3
NOTE:	This	product	 satisfies	 FCC	
regulations	 when	shielded	 cables	
and connectors are used to con-
nect	the	unit	 to	other	 equipment.	
To	prevent	 electromagnetic	 inter-
ference	with	electrical	 appliances	
such	as	radios	 and	televisions,	 use	
shielded	cables	and	connectors	
for	connections.
WARNING:	 TO	PREVENT	 FIRE	OR	ELECTRIC	
SHOCK HAZARD, DO NOT EXPOSE THIS 
UNIT TO RAIN, LIQUIDS, OR MOISTURE 
CAUTION:	DO	 NOT	 ATTEMPT	 TO	REMOVE	
OR BREAK OFF THE GROUND PRONG FROM 
THE ELECTRICAL CORD. THIS PRONG IS 
USED TO REDUCE THE RISK OF ELECTRI-
CAL SHOCK AND FIRE IN CASE OF AN 
INTERNAL SHORT.
ATTENTION:	 POUR	PREVENIR	 LES	CHOCS	
ELECTRIQUES NE PAS UTILISER CETTE 
FICHE	 POLARISEE	 AVEC	UN	PROLON-
GATEUR, UNE PRISE DE COURANT OU 
UNE AUTRE SORTIE DE COURANT, SAUF 
SI	LES	 LAMES	 PEUVENT	 ETRE	INSEREES	 A	
FOND SANS EN LAISSER AUCUNE PARTIE A 
DECOUVERT.
  19MXR                                ELECTRICAL SAFETY PRECAUTIONS
The	serial	 and	model	 number	 for	this	 unit	 is	
located	 on	the	 rear	 panel.	 Please	 write	down	
the	numbers	 here	and	retain	 for	future	 refer-
ence. 
Model No._____________________________
Serial No._____________________________
Purchase	 Notes:
Date	of	Purchase_______________________
Dealer Name__________________________
Dealer Address_________________________
_____________________________________
_____________________________________
Dealer	 Phone__________________________ 
						

							ELECTRICAL PRECAUTIONS
RISK OF ELECTRIC SHOCKDO NOT OPEN
CAUTIO N
The exclamation point within an equilateral triangle is
intended  to alert  the  user  to the  presence  of important
operating  and maintenance  (servicing) instructions  in
t he literature accompanying the appliance.
The 
lightning  flash with arrowhead  symbol, within an
equilateral triangle, is intended to alert the user to th e
presence  of uninsulated  dangerous voltage within the
products  enclosure  that may  be of sufficient  magnitude
to constitute a risk of electric shock to persons .
READ INSTRUCTIONS  — All the  safety  and operatin g
instructions  should be read  before  the product  is
operated.
RETAIN INSTRUCTIONS —  The safety and operating
instructions  should be retained  for future  reference.
HEED  WARNING S —  All  warnings  on the  product  and
in  the  operating  instructions  should be adhered  to.
FOLLOW  INSTRUCTIONS  — All  operating  and use
instructions should be followed.
CLEANING  — The  product  should be cleaned  only with
a  polishing  cloth or a soft  dry cloth.  Never  clean with
furniture  wax, benzine,  insecticides  or other  volatile
liquids since they may corrode the cabinet .
A TTACHMENTS  — Do  not  use  attachments  not
recommended  by the  product  manufacturer  as they
may cause hazards.
WATER  AND MOISTURE  — Do  not  use  this product
near  water  — for  example,  near a bathtub,  wash
bowl,  kitchen  sink, or laundry  tub; in a wet  basement ;
or near a swimming pool; and the like.
ACCESSORIES  — Do  not  place  this product  on an
unstable  cart, stand,  tripod,  bracket,  or table.  The
product  may fall, causing  serious injury to a child  or
adult,  and serious  damage  to the  product.  Use only
w ith  a cart,  stand,  tripod,  bracket,  or tabl e
recommended  by the  manufacturer,  or sold  with
the  product.  Any mounting  of the  product  should
follow  the manufacturer’s  instructions, and shoul d
use  a mounting  accessory  recommended  by the
manufacturer .
CART  — A  product  and cart combination  should be
moved  with care.  Quick  stops,  excessive  force, and
uneven  surfaces  may cause  the product  and cart
combination to overturn .
VENTILATION  — Slots  and openings  in the  cabinet  are
provided  for ventilation  and to ensure  reliable
operation  of the  product  and to protect  it from
overheating,  and these  openings  must not be
blocked  or covered.  The openings  should never be
blocked  by placing  the product  on a bed,  sofa,  rug,
or  other  similar  surface.  This product  should not be
placed  in a built-in  installation  such as a bookcase  or
rack  unless  proper ventilation  is provided  or the
manufacturer’s  instructions have been  adhered  to.
POWER  SOURCES  — This  product  should be operated
only  from  the type  of power  source  indicated  on the
marking  label. If you  are not sure  of the  type  of
power  supply  to your  home,  consult  your product
dealer or local power company.
LOCATIO N –  The  appliance  should be installed  in a
stable location.
NONUSE  PERIODS –  The  power  cord of the  appliance
should 
be  unplugged  from the outlet  when left un-
used for a long period of time. GROUNDING OR POLARIZATION
•
If this  product  is equipped  with a polarized  alternating
current  line plug  (a plug  having  one blade  wider than
the  other),  it will  fit into  the outlet  only one way.  This
is  a safety  feature.  If you  are unable  to insert  the plug
fully  into the outlet,  try reversing  the plug.  If the  plug
should  still fail to fit,  contact  your electrician  to
replace  your obsolete  outlet. Do not  defeat  the
safety purpose of the polarized plug.
• If this  product  is equipped  with a three-wire
grounding  type plug,  a plug  having  a third  (grounding)
pin,  it will  only  fit into  a grounding  type power  outlet.
This  is a safety  feature.  If you  are unable  to insert  the
plug  into the outlet,  contact  your electrician  to
replace  your obsolete  outlet. Do not  defeat  the
safety purpose of the grounding type plug.
POWER-CORD  PROTECTION - Power-supply  cords
should  be routed  so that  they  are not likely  to be
walked  on or pinched  by items  placed  upon or
against  them, paying  particular  attention to cords  at
plugs,  convenience  receptacles, and the point  where
they exit from the product .
OUTDOOR ANTENNA GROUNDING  — If an outside
antenna  or cable  system  is connected  to the  product ,
be  sure  the antenna  or cable  system  is grounded  so
as  to provide  some protection  against voltage surges
and  built-up  static charges.  Article 810 of the  National
Electrical  Code, ANSI/NFPA  70, provides  informatio n
with  regard  to proper  grounding  of the  mast  and
supporting  structure, grounding  of the  lead-in  wire
to  an  antenna  discharge  unit, size of grounding
conductors,  location of antenna-discharge  unit,
connection  t o grounding  electrodes,  and
r equirements  for the  grounding  electrode. See  Figur e
A.
LIGHTNING  — For  added  protection  for this  product
during  a lightning  storm, or when  it is  left  unattended
and  unused  for long  periods  of time,  unplug  it from
the  wall  outlet  and disconnect  the antenna  or cabl e
system.  This will prevent  damage  to the  product
due to lightning and power-line surges.
POWER  LINES — An  outside  antenna  system should
not  be located  in the  vicinity  of overhead  power lines
or other electric light or power circuits, or where it
can  fall into  such  power  lines or circuits.  When
installing  an outside  antenna  system, extreme  care
should  be taken  to keep  from touching  such power
lines  or circuits  as contact  with them  might  be fatal.
O VERLOADING  — Do  not  overload  wall outlets ,
extension  cords, or 
integral  convenience  receptacles
as this can result in a risk of fire or electric shock. OBJECT 
AND LIQUID  ENTRY - N ever  push  objects  of
any  kind  into this product  through  openings  as they
may  touch  dangerous  voltage points or short-out
parts  that could  result  in a fire  or electric  shock.
Never spill liquid of any kind on the product .
SERVICING  — Do  not  attempt  to service  this product
yourself  as opening  or removing  covers may expose
you  to dangerous  voltage or other  hazards.  Refer all
servicing to qualified service personnel .
DAMAGE  REQUIRING  SERVICE  -  Unplug  this product
from the wall outlet and refer servicing to qualifie d
service personnel under the following conditions:
•W hen the power-supply cord or plug is damaged.
• If liquid  has been  spilled,  or objects  have fallen  into
the product .
• If the product has been exposed to rain or water.
• If the  product  does not operate  normally  by following
the  operating  instructions.  Adjust only those  controls
that  are covered  by the  operating  instructions  as an
improper  adjustment  of other  controls  may result  in
damage and will often require extensive work by  a
qualified  technician  to restore  the product  to its
normal operation.
• If the  product  has been  dropped  or damaged  in any
way.
•W hen the product  exhibits  a distinct  change  in
performance — this indicates a need for service.
REPLACEMENT  PARTS -- W hen  replacement  parts
are  required,  be sure  the service  technician  has used
replacement  parts specified  by the  manufacturer  or
have  the same  characteristics  as the  original  part.
Unauthorized  substitutions may result  in fire,  electri c
shock, or other hazards.
SAFETY  CHECK - U pon  completion  of any  service  or
repairs  to this  product,  ask the service  technician  to
perform  safety checks  to determine  that the product
is in proper operating condition.
WALL  OR CEILING  MOUNTING  — The  product  should
not be mounted to a wall or ceiling.
HEAT  — The  product  should be situated  away from heat
sources  such as radiators,  heat registers,  stoves, or
other  products  (including  amplifiers)  that produce
heat .
IMPOR TANT SAFETY INSTRUCTIONS
ANTENNA
LEAD IN
WIRE
GROUND
CLAM P
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)
GROUNDING CONDUCTOR S
(NEC SECTION 810-21)
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
ELECTRI
C
SERVICE
EQUIPMENT
Fig.  A
NEC — NATIONAL ELECTRICAL CODE
CAUTION: T O REDUCE  THE RISK  O F ELECTRIC 
SHOCK, DO NOT REMOVE THE COVER (OR BACK). 
THERE  ARE N O USER  SERVICEABLE  PARTS 
I NSIDE   REFER  SERVICE  TO YOUR  AUTHORIZED 
AMERICAN AUDI O
® SERVICE TECHNICIAN.
  19MXR                                ELECTRICAL SAFETY PRECAUTIONS
©American Audio®   -   www.americanaudio.us   -   19MXR Instruction Manual Page 4 
						

							©American Audio®   -   www.americanaudio.us   -   19MXR Instruction Manual Page 5
1.	 For	adult	use	only	 -	Keep	 out	of	the	 reach	
of	 	children.
2.	 Water	 and	Moisture	 -	The	mixer	should	 not	
be	used	 near	water	 -	for	 example,	 near	a	bath	
tub,	 kitchen	 sink,	laundry	 tub,	in	a	wet base-
ment	 or	near	 a	swimming	 pool,	etc. Do	not	 spill	
water	 or	other	 liquids	 in	to	 or	 on	 to	your	 mixer.
3.	 Ventilation	 -	The	mixer	 should	 be	situated 
so	that	 its	location	 or	position	 does	not	inter-
fere	 with	 its	proper	 ventilation.	 For	example,	
the mixer	should	 not	be	situated	 on	a	bed,	
sofa,	 rug,	or	similar	 surface	 that	may	 block	 the	
ventilation	 openings;	or,	placed	 in	a	built-in	
installation,	 such	as	a	bookcase	 or	cabinet	 that	
may	impede	 the	flow	 of	air	 through	 the	ventila-
tion	 openings. 
4.	 Heat	 -	The	mixer	 should	 be	situated	 away 
from	heat	sources	 such	as	radiators,	 heat	reg-
isters,	 stoves,	 or	other	 appliances	 (including	
amplifiers)	that	produce	 heat.
5.	 Power	 Sources	-	The	mixer	 should	 be	con-
nected	 to	a	power	 supply	 (wall	outlet) only	 of	
the	type	 described	 in	the	 operating	 instructions	
or	as	 marked	 on	the	mixer.
6.	 Servicing	 -The	user	should	 not	attempt	 to	
service	the	mixer	beyond	 that	described	 in	the	
operating	 instructions.	There	are	no	user	 ser-
viceable	 parts	inside. All	other	 servicing	 should	
be	referred	 to	qualified	 service	personnel.	 The	
mixer	should	 be	serviced	 by	qualified	 service	
personnel	 when:
 A.		 The	 power-supply	 cord	or	the	 plug	 has		
  been	 damaged.
 B.	 Objects	 have	fallen,	 or	liquid	 has	been		 	
  spilled	 into	the	mixer.
 C.	 The	mixer	has	been	 exposed	 to	rain	 	
  or water.
					D.	 The	mixer	 does	 not	appear	 to	operate	 	
  normally	 or	exhibits	 a	marked	 change		
  in	performance.
7.	 Never	 disassemble	 or	modify	 your	unit	in	
any	way,	 doing	 so	will	 void	 your	 manufactures	
warranty.
8. Never	 plug	this	mixer	 in	to	 a	dimmer	 pack.
  19MXR                                    SAFETY PRECAUTIONS
9. Do	not	 let	insecticides,	 benzene,	or	thinner	
come	 in	contact	 with	the	surface	 of	the	 
unit.
10.	This	 unit	is	intended	 for	indoor	 use	only,	 use	
of	this	product	outdoors	voids	all	warranties.
11.	Always	 mount	this	unit	 in	safe	 and	stable	
matter.
12. Disconnect	 from	main	 power	 before	 making	
any	type	of	connection.
13. Cleaning - The	mixer	should be cleaned 
only as recommended by the manufacturer. 
Use a soft cloth to wipe down the outside of the 
unit. For stubborn stains moisten a soft cloth 
with glass cleaner or other mild detergent to 
wipe away any stains. Use a soft cloth to wipe 
any residual cleaner. Never use volatile clean-
ers  such	as	 benzene, solvent, or thinner to clean 
your unit, these cleaners will damage the units 
surface. 	
14.	Handle	 the	power	 supply	 cord	carefully.	 Do	
not	 damage	 or	deform;	 it	may	 cause	 electric 	
shock	or	malfunction	 when	used.	 Hold	plug	
attachment	 when	removing	 from	wall	outlet. 	
Do	not	 pull	 on	the	 cord.
15.	To	 avoid	electric	 shock,	do	not	 open	 the	
top	 cover	 when	the	unit	 is	plugged	 in.	If	prob-
lems	 occur	 with	the	unit,	 call	American	 Audio® 
customer	support.
16.	Do	not	place	 metal	 objects	 or	spill	 any	liq-
uids	 	 inside	 or	on	 the	 mixer.	 Electric	 shock	or	
malfunction	 may	occur.
17.	Power	 Cord	Protection	 -	Power	 supply	
cords	should	 be	routed	 so	that	 they	 are	not	
likely	 to	be	 walked	 on	or	pinched	 by	items	
placed	 upon	or	against	 them,	paying	 particular	
attention	 to	cords	 at	plugs,	 convenience	 recep-
tacles,	and	the	point	 where	 they	exit	from	 the	
mixer.	 Route	 your	power	 cord	out	of	the	 way	 of	
foot	traffic.
18.	Always	 have	the	front	 gain	controls	 set	to	
their	 lowest	 level	during	 initial	power-up	 to	pre-
vent	speaker	damage. 
						

							Introductions:	Congratulations	and	thank	 you	for	purchasing	 the	American	 Audio®	19MXR	 mixer.	
This	mixer	 is	a	representation	 of	American	 Audio’s	continuing	 commitment	 to	produce	 the	best	 and	
highest	 quality	audio	products	 possible	at	an	 affordable	 price.	Please	 read	and	understand	 this	manual	
completely	 before	attempting	 to	operate	 your	new	mixer.	 Please	 carefully	 read	and	understand	 the	
instructions	 in	this	 manual	 thoroughly	 before	attempting	 to	operate	 this	unit.	 These	 instructions	 con-
tain	important	 safety	information	 regarding	the	use	 and	 maintenance	 of	this	 unit.	 Take	 special	 care	to	
follow	 all	warning	 symbols	 and	labels	 both	on	the	 unit	 and	 printed	 in	this	 manual.	 Also,	Please	 keep	
this	manual	with	the	unit,	for	future	reference.
Customer	Support:	
American Audio®	provides	 a	toll	 free	 customer	 support	line,	to	provide	 set	up	help	 and	answer	 any	
question	 should	you	encounter	 problems	during	your	initial	 set	up	or	operation.	 You	may	 also	visit	us	
on	the	 web	 at	www.americanaudio.us	 for	any	 comments	 or	suggestions.	 Service	Hours	are	Monday	
through	Friday	8:00	a.m.	to	4:30	p.m.	Pacific	Standard	Time.
	 Voice:	 	 (800)	322-6337
	 Fax:	 		 (323)	582-2941
	 E-mail:		 [email protected]
To	purchase	parts	online	visit	http://parts.americandj.com
Caution!	There	are	no	user	 serviceable	 parts	inside	 this	mixer.	 Do	not	 attempt	 any	repairs	 yourself,	
without	 being	instructed	 to	do	 so	by	 an	authorized	 American	Audio	service	 technician.	 Doing	so	will	
void	 your	 manufactures	 warranty.	In	the	 unlikely	 event	your	mixer	 may	require	 service,	 please	contact	
American Audio®	customer	support.
Do	not	discard	the	packing	carton	in	the	trash.	Please	recycle	when	ever	possible.
 19MXR                                                        INTRODUCTION
©American Audio®   -   www.americanaudio.us   -   19MXR Instruction Manual Page 6
 19MXR                               SET-UP PRECAUTIONS
Please	be	sure	 to	make	 any	connections	 before	plugging	 the	mixer	 in	to	 an	 electrical	 outlet.	All	fader	
and	 volume	 controls	 should	be	set	 to	zero	 or	minimum	 position,	before	the	mixer	 is	switched	 on.	If	the	
mixer	 has	been	 exposed	 to	drastic	 temperature	 fluctuation	(e.g.	after	 transportation),	 do	not	 switch	 on	
the	mixer	 immediately.	 The	arising	 condensation	 of	water	 might	 damage	 your	device.	 Leave	the	device	
switched	off	until	it	has	reached	room	temperature.
Operating	Determinations:
•	 When	installing	this	mixer,	please	make	sure	that	the	device	is	not	exposed	or	will	not	be	
	 exposed	to	extreme	heat,	moisture	or	dust!
•	 Do	not	operate	the	mixer	in	extremely	hot	(more	than	30°/100°F)	or	extremely	cold	(less	than	
	 5°C/40°F)	surroundings.	
•	 Keep	the	unit	out	of	direct	sunlight	and	away	from	heaters.
•	 Operate	the	mixer	only	after	becoming	familiar	with	its	functions.	Do	not	permit	operation	by	
	 persons	not	qualified	for	operating	the	mixer.	Most	damages	are	the	result	of	unprofessional	
	 operation!
•	 Do	not	attempt	to	operate	this	mixer	if	the	power	cord	has	been	frayed	or	damaged.	
•	 Disconnect	 from	main	 power	 before	 making	 any	type	 of	connection.
•	 Do	 not	attempt	 to	operate	 this	mixer,	 if	it	 becomes	 damaged	 in	any	 way.
•	 Never	operate	this	mixer	when	it’s	covers	are	removed.
•	 To	reduce	the	risk	of	electrical	shock	or	fire,	do	not	expose	this	mixer	to	rain	or	moisture.
•	 This	mixer	is	intended	for	indoor	use	only,	use	of	this	product	outdoors	voids	all	warranties.
•	 During	long	periods	of	non-use,	disconnect	the	mixer’s	main	power. 
						

							MASTER LEVEL - Use	this	level	 to	control	 your	main	 volume	 output.	Try	never	 to	send	 an	output	 of	
more	than	+4dB	 to	your	 system.	 Signal	at	levels	 higher	 than	this	will	start	 to	distort	 and	may	 cause	
damage	 to	your	 system	 and	speakers.	 Remember	 that	a	distorted	 signal	from	you	mixer	 will	only	 be	
multiplied	throughout	your	system.
CHANNEL GAIN LEVEL - The	channel	 gain	levels	 are	not	 to	be	 used	 as	volume	 controls.	 Never	use	
the	channel	 trim	to	set	 the	 output	 volume.	 These	controls	 are	used	 to	aid	 in	distortion	 control.	Use	
these	control	 to	preset	 your	signal	 level	before	 the	crossfader.	 With	your	channel	 faders	in	the	 maxi-
mum	 position,	 use	the	channel	 trim	level	 to	set	 an	average	 output	level	of	about	 +4dB	on	you	 master	
l e ve l  m e t e r.
HEADPHONES -	To	 avoid	 damaging	 your	headphones	 always	be	sure	 the	headphone	 volume	level	(6)	
is	set	 to	minimum	 before	plugging	 them	in.	To	 avoid	 sever	hearing	 damage,	 never	put	the	headphone	
on	without	making	sure	the	headphone	level	is	turned	down.
MAIN MIC -	 	The	 main	 mic	connector	 uses	a	combo	 plug	that	allows	 you	to	connect	 either	a	1/4”	
unbalanced	 jack	or	by	 a	standard	 3-pin	XLR	balanced	 connector.	 The	main	 mic	also	 has	an	indepen-
dent	 volume	 control.	 When	feedback	 occurs	when	using	the	mic,	 try	lowering	 the	level	 this	may	 reduce	
the	feedback.	 Always	leave	the	mic	 level	 to	it’s	 minimum	 level	when	 not	in	use.	Note: We recommend 
that you use a 500-600ohm microphone for the best sound quality.
CHANNEL  LINE LEVEL SELECTOR SWITCHES - This	 switch	 is	used	 to	change	 the	selected	 input	
from	phono	to	line	and	vice	versa.	The	switch	selectors	are	on	the	rear	panel.
 19MXR                               QUICK START INSTRUCTIONS
©American Audio®   -   www.americanaudio.us   -   19MXR Instruction Manual Page 7
 19MXR                                              UNPACKING
Every	19MXR	 has	been	 thoroughly	 tested	and	has	been	 shipped	 in	perfect	 operating	 condition.	 Care-
fully	check	 the	shipping	 carton	for	damage	 that	may	 have	 occurred	 during	shipping.	 If	the	 carton	
appears	 to	be	 damaged,	 carefully	inspect	your	mixer	 for	any	 damage	 and	be	sure	 all	equipment	 neces-
sary	to	operate	 the	mixer	 has	arrived	 intact.	In	the	 event	 damage	 has	been	 found	 or	parts	 are	missing,	
please	 contact	 our	toll	free	 customer	 support	number	for	further	 instructions.	 Please	do	not	 return	 the	
mixer	to	your	dealer	without	first	contacting	customer	support. 
						

							 19MXR                             CONTROLS AND FUNCTIONS
©American Audio®   -   www.americanaudio.us   -   19MXR Instruction Manual Page 8
FRONT PANEL
1
2
7
6
5
4
3
11
12
13
14
15
16
17
10
9
8 
						

							1.  MICROPHONE EQ SECTION -
     MIC 1 & 2 GAIN CONTROL - These	knobs	individually	control	the	output	volume	of	MICRO-
PHONES 1 & 2 (1). However,	master	volume	is	controlled	by	the	MASTER VOLUME CONTROL (14).
     MICROPHONE 1 & 2 TREBLE CONTROL - This	knob	is	used	to	adjust	the	treble	levels	of	the
Microphone	with	a	maximum	 signal	gain	of	12dB	 or	maximum	 signal	decrease	 of	-12dB.	 Turning		 the		knob	 in	
a	counter-clockwise	 direction	will	decrease	 the	amount	 of	treble	 applied	 to	the	 microphone	 signal,	turning	 the	
knob	in	a	clockwise	direction	will	increase	the	amount	of	treble	applied	to	microphone	signal.
    MICROPHONE 1 & 2 BASS CONTROL - This	knob	 is	used	 to	adjust	 the	low	 frequency	 levels	of	the	 micro-
phone	 with	a	maximum	 signal	gain	of	12dB	 or	maximum	 signal	decrease	 of	-12dB.	 Turning	 the	knob	 in	a	coun-
ter-clockwise	 direction	will	decrease	 the	amount	 of	bass	 applied	 to	the	 microphone	 signal,	turning	 the	knob	 in	
a	clockwise	direction	will	increase	the	amount	of	bass	applied	to	microphone	signal.  
     REVERB - When	the	REVERB	is	used	it	simulates	the	sound	you	would	get	as	if	you	were	
playing	 music	in	big	 empty	 hall.		All	the	 reflections	 you	would	 get	with	 the	music	 bouncing	 off	the	 walls	 is	digi-
tally	simulated	in	this	effect.
2. CHANNEL EQ - 
     CHANNEL GAIN CONTROL - This	 adjustment	 is	used	 to	adjust	 the	audio	 source	 signal	input	gain	for	a	chan-
nel.	 Never	 use	the	gain	 control	 to	adjust	 a	channels	 output	volume.	 Setting	the	gain	 level	 properly	 will	ensure	 a	
clean	output	 signal.	An	improper	 gain	level	 adjustment	 will	send	 a	distorted	 signal	throughout	 the	entire	 audio	
line	which	may	damage	speakers	and	amplifiers.	To	properly	set	a	channels	gain	level	control:
	 	 1.	 Be	sure	 the	MASTER VOLUME CONTROL (7) is set to level 8.
	 	 2.	 Set	the	CHANNEL FADER (13) to level 8.
	 	 3.	 Begin	playback	 on	an	audio	 source	 connected	 to	the	 channel	 you	are	adjusting.
	 	 4.	 Use	the	Gain	 Control	 to	adjust	 an	average	 output	volume	 of	+4	 dB.    
    5.	Repeat	 this	step	 for	all	channels.
     CHANNEL TREBLE CONTROL - This	 knob	 is	used	 to	adjust	 the	treble	 levels	of	a	channel	 allowing	 for	a	
maximum	 treble	gain	of	12dB	 or	maximum	 decrease	of	-∞dB.	 Turning	 the	knob	 in	a	counter-clockwise	 direc-
tion	will	decrease	 the	amount	 of	treble	 applied	 to	a	channel	 signal,	turning	 the	knob	 in	a	clockwise	 direction	will	
increase	the	amount	of	treble	applied	to	a	channel	signal.
     CHANNEL MIDRANGE CONTROL - This	knob	 is	used	 to	adjust	 the	midrange	 levels	of	a	channel	 allowing	
for	a	maximum	 midrange	gain	of	12dB	 or	maximum	 decrease	of	-∞dB.	 Turning	 the	knob	 in	a	counter-clockwise	
direction	 will	decrease	 the	amount	 of	midrange	 applied	to	a	channel	 signal,	turning	 the	knob	 in	a	clockwise	
direction	will	increase	the	amount	of	midrange	applied	to	a	channel	signal.
    CHANNEL BASS CONTROL - This	 knob	 is	used	 to	adjust	 the	low	 frequency	 levels	of	a	channel	 allowing	 for	
a	maximum	 bass	gain	of	12dB	 or	maximum	 signal	decrease	 of	-∞dB.	 Turning	 the	knob	 in	a	counter-clockwise	
direction	 will	decrease	 the	amount	 of	bass	 applied	 to	a	channel	 signal,	turning	 the	knob	 in	a	clockwise	 direction	
will	increase	the	amount	of	bass	applied	to	a	channel	signal.
3.  SOURCE SELECTOR SWITCH - These	switches	 are	used	 to	select	 the	input	 source	 assigned	 to	each	
channel.	 Each	channel	 may	only	be	assigned	 one	input	 source	 at	a	time.	 This	switch	 must	be	in	the	 “ANALOG”	
position	for	turntable	and	line	operation.
4.  CUE SELECTOR BUTTON - These	 buttons	 are	used	 to	activate	 a	channels	 “CUE”	mode.	The	CUE	 LED	
will	glow	 when	 a	channels	 cue	mode	 is	activated.	 The	Cue	 function	 sends	a	channels	 incoming	 signal	to	the	
headphones.	 The	cue	level	 is	adjusted	 by	the	CUE LEVEL KNOB (6). Be	 sure	 the	CUE MIXING KNOB (11) is set 
to	the	“CUE”	position	to	hear	a	selected	channel	source.
5. BROWSER CONTROLS AND FILTERS (MIDI CONTROLS)-
     LOAD A (MIDI) - This button will load the selected song to the Left deck. Use the SHIFT BUTTON to 
     access the buttons secondary command Load selected song to secondary Left deck.
     LOAD B (MIDI) - This button will load the selected song to the Right deck. Use the SHIFT BUTTON to     
 
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©American Audio®   -   www.americanaudio.us   -   19MXR Instruction Manual Page 9 
						

							©American Audio®   -   www.americanaudio.us   -   19MXR Instruction Manual Page 10
     access the buttons secondary command Load selected song to secondary Right deck.
     ENCODER & PUSH ACTION - Turn the encoder to increase or decrease the selected action. Pushing 
     down on the encoder activates an action. See the navigation buttons for more info.
     UP (MIDI) - This control will set focus on the Left deck FX unit. The Encoder will set the amount for Param-    
 
     eter 1 on the Left FX unit; the SHIFT BUTTON + the ENCODER will set the amount for Parameter 2; and 
     pushing the ENCODER will turn the FX on/off.
     FWD (MIDI) - This control will set focus on the Song browser. The ENCODER will browse up/down the 
     song list.
     DOWN (MIDI) - This control will set focus on the Right deck FX unit. The Encoder will set the amount for      
 
     Parameter 1 on the Right FX unit; the SHIFT BUTTON + the ENCODER will set the amount for Parameter 2; 
     and pushing the ENCODER will turn the FX on/off.
     BACK (MIDI) - This control will set focus on the Folder browser. The ENCODER will scroll up and down      
 
     the Folder browser, pressing the ENCODER down will open or close Folders/Devices.
     F I LT E R  - Push the Knob in to enable and disable the LPF/HPF filter. The LED indicator will glow when the          
 
     filter is On. The center position for the Filter is neutral so the signal is will not be filtered. Turn the knob to      
 
     the left from the neutral position to set the low pass filter, this will cut off all frequencies higher than the 
     amount set on the filter. Turn the knob to the right from the neutral position to set the high pass filter, this 
     will cut off all frequencies lower than the amount set on the filter.
NOTE: The Filter is assigned via the corresponding FADER ASSIGN KNOBS (15), i.e. Filter A is assigned 
using Deck A FADER ASSIGN KNOB (15). The LED indicator will blink when the filter is enabled but the 
FADER ASSIGN KNOB (15) is set to the Off position.
     SHIFT (MIDI) - The button has 2 functions a soft and a hard shift. A soft shift is performed by toggling         
 
     the shift button, this will be indicated by a blinking shift LED. A hard shift is performed by holding down 
     the shift button and combining it with another button.
NOTE: When performing a hard shift, it’s recommended you release the secondary button before releas-
ing the Shift button, this is to prevent MIDI latches unless the MIDI function is a temporary function.
6. CUE LEVEL VOLUME CONTROL - This	knob	 is	used	 to	adjusts	 the	headphone	 volume	output	level.	Turn	
the	knob	in	a	clockwise	direction	to	increase	the	headphone	volume.
7. MASTER VOLUME CONTROL - This	knob	 is	used	 to	control	 the	master	 output	level	(main	 volume).	 To	avoid	
distorted	 output	try	to	maintain	 an	average	 output	signal	level	no	greater	 than	+4	dB.	 (see	 Channel	 Gain	2)	To	
avoid	 speaker	 damage	 that	may	 be	caused	 by	excessive	 volume,	be	sure	 this	knob	 is	always	 set	to	zero	 (com-
pletely	down)	before	turning	the	unit	on.
8.  BOOTH LEVEL - This	knob	 is	used	 to	adjusts	 the	Booth	 volume	 output	level.	Turn	the	knob	 in	a	clockwise	
direction	to	increase	the	monitor	volume.
9.  CONTROLLER MODE - This	 mixer	 has	two	 operating	 mode;	Mixer	mode	 (default)	 and	Controller	 mode.	
To	activate	 Controller	 mode,	hold	down	 the	Controller	 Mode	Button	 when	powering	 up	before	 the	VU	meter	
displays	 the	Firmware	 Version.	The	LED	 will	glow	 when	 Controller	 Mode	is	activated.	 To	exit	 this	 mode,	 power	
down,	then	power	up	while	holding	the	Controller	Mode	button.
					Mixer 	Mode	-	This 	mode 	will	route 	the	USB 	audio 	stream 	to	2	Mixer 	channels, 	MIDILOG	2	and 	3	by 	defualt. 	
NOTE: Set your software audio routing to External mixer. Set Deck A to USB 1+2, Deck B to USB 3+4. 
Set MIDILOG channels 2 and 3 to USB.
					Controller	Mode	-	This	mode	routes	the	USB	audio	streams	to	the	MXR	mixers	master	and	headphone				 				
	
					outputs.	
NOTE: Set your software audio routing to Headphones. Set the Master to USB 1+2 and the Headphones 
to USB 3+4.
    SAMPLER - Virtual	DJ	has	 a	built	 in	Sampler.	 Samples	1-3	are	stored	 under	Cue	buttons	 1-3	located	 on	the	
 19MXR                       CONTROLS AND FUNCTIONS cont.