DOD 410 SERIES II User manual

The symbols shown above are internationally accepted symbols that warn of
potential hazards with electrical products. The lightning flash with arrowpoint in an
equilateral triangle means that there are dangerous voltages present within the
unit. The exclamation point in an equilateral triangle indicates that it is necessary
for the user to refer to the owner’s manual.
These symbols warn that there are no user serviceable parts inside the unit. Do
not open the unit. Do not attempt to service the unit yourself. Refer all servicing
to qualified personnel. Opening the chassis for any reason will void the manufac-
turer’s warranty. Do not get the unit wet. If liquid is spilled on the unit, shut it off
immediately and take it to a dealer for service. Disconnect the unit during storms
to prevent damage.
U.K. MAINS PLUG WARNING
A moulded mains plug that has been cut off from the cord is unsafe. Discard the
mains plug at a suitable disposal facility. NEVER UNDER ANY CIRCUMSTANCES
SHOULD YOU INSERT A DAMAGED OR CUT MAINS PLUG INTO A 13 AMP
POWER SOCKET. Do not use the mains plug without the fuse cover in place.
Replacement fuse covers can be obtained from your local retailer. Replacement
fuses are 13 amps and MUST be ASTA approved to BS1362.
SAFETY INSTRUCTIONS (EUROPEAN)
NOTICE FOR CUSTOMERS IF YOUR UNIT IS EQUIPPED WITH A POWER
CORD.
WARNING: THIS APPLIANCE MUST BE EARTHED.
The cores in the mains lead are colored in accordance with the following code:
GREEN and YELLOW - Earth BLUE - Neutral BROWN - Live
As colors of the cores in the mains lead of this appliance may not correspond with
the colored markings identifying the terminals in your plug, proceed as follows:
• The core which is colored green and yellow must be connected to the ter-
minal in the plug marked with the letter E, or with the earth symbol, or col-
ored green, or green and yellow.
• The core which is colored blue must be connected to the terminal marked
N or colored black.
• The core which is colored brown must be connected to the terminal marked
L or colored red.
CAUTION
ATTENTION: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
RISK OF ELECTRIC SHOCK
DO NOT OPEN
1
R410 Manual 6/8/99 10:41 AM Page 1

2These units comply with the European “EMC Directive” for emissions and suscept-
ability.
The power cord is terminated in a CEE7/7 plug (Continental Europe). The
green/yellow wire is connected directly to the unit's chassis. If you need to change
the plug, and if you are qualified to do so, refer to the table below.
WARNING: If the ground is defeated, certain fault conditions in the unit or in the
system to which it is connected can result in full line voltage between chassis and
earth ground. Severe injury or death can then result if the chassis and earth ground
are touched simultaneously.
IMPORTANT!
FOR YOUR PROTECTION, PLEASE READ THE FOLLOWING:
WATER AND MOISTURE: Appliance should not be used near water (e.g. near a
bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swim-
ming pool, etc). Care should be taken so that objects do not fall and liquids are not
spilled into the enclosure through openings.
POWER SOURCES: The appliance should be connected to a power supply only of
the type described in the operating instructions or as marked on the appliance.
GROUNDING OR POLARIZATION: Precautions should be taken so that the
grounding or polarization means of an appliance is not defeated.
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 appliance.
SERVICING: The user should not attempt to service the appliance beyond that
described in the operating instructions. All other servicing should be referred to
qualified service personnel.
LIVE
ENEUTRAL EARTH GND
CONDUCTOR
L
NBROWN BLUE
GREEN/YEL
BLACK
Normal Alt
WIRE COLOR
WHITE
GREEN
R410 Manual 6/8/99 10:41 AM Page 2

INTRODUCTION
Congratulations, and thank you for your purchase of the 410
Series II P.A./Monitor Processor. This monitor/speaker proces-
sor is to be used in conjunction with a sound reinforcement sys-
tem, or can serve as the final EQ and level control for the moni-
tor system.
The 2/3rds octave EQ allows you to quickly and easily modify
a sound for use in music, recording, or sound reinforcement.
The notch filters give you more control over notching out
unwanted noise and the limiting and low cut features assist in
protecting your amps and speakers.
Front Panel
1. Power Switch - Applies power to the 410.
2. Input Gain Stage - Controls the level of the input signal.
±12dB adjustment.
3. Input/Output Section - The EQ/Limit switch, switches in or
out the graphic EQ, notch filters, and the limiter. This allows a
comparison of the signal “wet” or “dry”. The input level and
low cut filter are always in the signal path regardless of the
switch position. The meter switch connects the LED level
meter to the input (post input level) or the output.
4. Graphic EQ - This is a 15 band, 2/3rds octave graphic EQ.
It provides ±12dB of gain for each band. The peak LED indi-
cates that.the signal out of the EQ section is 3dB below clip-
ping.
410 series II
METEREQ/LIMIT
-3
-6
-12
+3
+6
+12
25
0
-3
-6
-12
+3
+6
+12
0
40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K
p.a./monitor processor
LOW
CUT
IN/
OUT
NOTCH 1 LOW CUTNOTCH 2 LIMITERINPUT INPUT/OUTPUT
x10
Hz
x10
HzFREQUENCY
Hz
160
80 300
40 400
dB
10
6
3
1
GAIN
REDUCTION
dBu
IN/OUT
LEVEL
-10
0
+10
PEAK
EQ
PEAK
FREQUENCY
Hz
800
200 2k
1.2k
400
+140
THRESHOLD
dBu
+8
-10 +22
+6-6
GAIN
dB
0
-12 +12
SPEED
FAST
SLOW
FREQ
40Hz
80Hz
METEREQ/LIMIT
INPUT
OUTPUT
0 dB
-8
-16
-24
CUT
0 dB
-8
-16
-24
CUT
123 4 5 67
3
R410 Manual 6/8/99 10:41 AM Page 3

45. Notch Filters - These two filters are very narrow bandwidth
notch filters that can provide 24dB of attenuation at the select-
ed frequency. The x10 function allows you to change the range
of each notch (see the graph below). These filters are
“Disabled” by setting the depth control to the top (0dB cut).
These filters are used primarily for eliminating feedback or
hum from the P.A. or monitor systems.
6. Limiter - The limiter function features Automatic Variable
Ratio Limiting™. AVR Limiting behaves as a mild compressor
with a soft knee at low threshold settings, and a hard knee lim-
iter at higher threshold settings. This allows the limiter to func-
tion as a mild compressor or as a limiter for speaker protection.
The fast/slow speed switch affects both the attack and release
time. This gives enough variety for most situations. The gain
reduction meter displays the amount of gain reduction due to
limiting.
7. Low Cut - A selectable low cut (high pass) filter that may
be switched in or out and has selectable rolloff frequency of 40
or 80Hz.
20Hz 200Hz
40Hz 400Hz
2KHz
4KHz
20KHz
Notch 2
Notch 1
x10 ranges
standard range
R410 Manual 6/8/99 10:41 AM Page 4

Rear Panel
1. Balanced Output -Accepts a female XLR plug (see section
on installation for wiring). Maximum balanced output level is
21dBu. Output impedance is 102Ωbalanced.
2. Balanced/Unbalanced Output - Accepts a 1/4” tip-ring-
sleeve balanced or 1/4” unbalanced tip-sleeve plug (see section
on installation for wiring connections). Maximum output level
is 21dBu. Output impedance is 20kΩfor the unbalanced con-
nection and 40kΩfor balanced.
3. Balanced Thru Output - Accepts a female XLR plug (see
section on installation for wiring connections). This output is
hardwired to the input allowing the signal to be split off to
another destination. Balanced output is possible only with a
balanced input signal.
4. Balanced/Unbalanced Thru Output - Accepts a 1/4” tip-
ring-sleeve balanced phone plug or a 1/4” unbalanced tip-sleeve
plug (see section on installation for wiring connections).
5. Balanced Input - Accepts a male XLR plug (see section on
installation for wiring connections). Maximum allowable input
is 21dBu. Input impedance for the balanced connection is
102Ω.
6. Balanced/Unbalanced Input - Accepts a 1/4” tip-ring-sleeve
balanced phone plug or a 1/4” unbalanced tip-sleeve plug (see
section on installation for wiring connections). Maximum
allowable input is 21dBu . Input impedance is 51Ωfor the
unbalanced connection and 102Ωfor balanced .
BAL / UNBAL
OUTPUT
BAL OUTPUT
BAL / UNBAL
THRU OUTPUT
BAL THRU OUTPUT
BAL / UNBAL
INPUT
BAL INPUT
MANUFACTURED IN THE USA BY
SALT LAKE CITY, UTAH
MANUFACTURED IN THE USA BY
SALT LAKE CITY, UTAH AVIS: RISQUE DE CHOC ÉLECTRIQUE-NE PAS OUVRIR
WARNING: SHOCK HAZARD-DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE BACK. NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
117 V 50 / 60 Hz
18 WATTS
12 34 56
5
R410 Manual 6/8/99 10:41 AM Page 5

6INSTALLATION
Install the 410 in a rack with the provided rack screws. Route
the AC power cord to a convenient power outlet away from
audio lines.
Connections to the input and output jacks are made using 1/4”
balanced tip-ring-sleeve (TRS) plugs, or 1/4” unbalanced tip-
sleeve (TS) plugs, or balanced XLR plugs.
For balanced connection; wire the plug as follows:
1/4” XLR
High(+) Tip Pin 2
Low(-) Ring Pin 3
Ground Sleeve Pin 1
For unbalanced connection; wire the plug as follows:
1/4”
High(+) Tip
Ground Sleeve
Once the 410 has been installed and adjusted, an optional 801
security panel may be installed to keep unauthorized persons
from tampering with the settings.
APPLICATIONS
A. Using the 410 in conjunction with a real time analyzer
(such as DOD’s RTA Series II), a calibrated microphone, and
pink noise generator, the audio system may be tuned to make
the overall audio spectrum response of the sound system and
the room environment flatter in frequency response.
B. Greater gain-before-feedback characteristics may be
achieved by turning up the sound system to the feedback point
and attenuating the oscillating (ringing) frequency using the
notch filters. Turn the system up to feedback again and attenu-
R410 Manual 6/8/99 10:41 AM Page 6

ate the second oscillating frequency using the second notch fil-
ter.
C. Limiting sets the maximum allowable output level as set by
the threshold control. Limiting prevents clipping in amps and
protects your speakers.
D. Protection of amplifiers and speakers may be accomplished
using the LOW CUT feature of the equalizer. Wind noise or
dropped microphones can cause damage to the amps and /or
speakers. However, by rolling off the extreme low frequencies,
a measure of protection is added to the system without severely
affecting the overall sound quality.
E. In noisy environments, the audio signal may be tailored for
better intelligibility and penetration. This is particularly useful
for public address systems.
F. Creative use of the equalizer allows shaping of the signal for
a more pleasing sound or for special effects. The only limits
are those of taste and imagination.
Stage monitor processor application:
Thru Output
Thru Output
Monitor Feed Power Amp
Power Amp
R410 Series II
Floor Monitor
Floor Monitor
Mixer
410 series II
METER
-3
-6
-12
+3
+6
+12
25
0
-3
-6
-12
+3
+6
+12
0
40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K
p.a./monitor speaker processor
LOW
CUT
IN/
OUT
INPUT
x10
Hz
x10
HzFREQUENCY
Hz
130
70 220
40 400
dB
10
6
3
1
GAIN
REDUCTION
dBu
IN/OUT
LEVEL
-10
0
+10
PEAK
PEAK
FREQUENCY
Hz
630
200 2k
1.1k
360 +14-2
THRESHOLD
dBu
+6
-10 +22
dB
+6-6
GAIN
dB
0
-12 +12
SPEED
FAST
SLOW
FREQ
40Hz
80Hz
METER
INPUT
OUTPUT
0dB
-8
-16
-24
CUT
0dB
-8
-16
-24
CUT
INPUT/OUTPUT GRAPHIC EQUALIZER NOTCH1 NOTCH2 LIMITER LOW CUT
R410 Series II
410 series II
METER
-3
-6
-12
+3
+6
+12
25
0
-3
-6
-12
+3
+6
+12
0
40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K
p.a./monitor speaker processor
LOW
CUT
IN/
OUT
INPUT
x10
Hz
x10
HzFREQUENCY
Hz
130
70 220
40 400
dB
10
6
3
1
GAIN
REDUCTION
dBu
IN/OUT
LEVEL
-10
0
+10
PEAK
PEAK
FREQUENCY
Hz
630
200 2k
1.1k
360 +14-2
THRESHOLD
dBu
+6
-10 +22
dB
+6-6
GAIN
dB
0
-12 +12
SPEED
FAST
SLOW
FREQ
40Hz
80Hz
METER
INPUT
OUTPUT
0dB
-8
-16
-24
CUT
0dB
-8
-16
-24
CUT
INPUT/OUTPUT GRAPHIC EQUALIZER NOTCH1 NOTCH2 LIMITER LOW CUT
7
R410 Manual 6/8/99 10:41 AM Page 7

8House P.A. application:
Permanent installation multi-room application:
Maintenance and Service
Other than keeping the unit clean and occasionally checking the
connectors and cables to the unit for integrity, there is no main-
tenance necessary for the DOD 410 P.A./Monitor Processor.
There are NO user serviceable parts inside the unit. Opening
the chassis will void the warranty. All service and repair must
be performed by the factory for the warranty to remain in ser-
vice.
Room 1 Speakers
Room 2 Speakers
Room 3 Speakers
House Mix Power Amp
Power Amp
Mixer
R410 Series II
410 series II
METER
-3
-6
-12
+3
+6
+12
25
0
-3
-6
-12
+3
+6
+12
0
40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K
p.a./monitor speaker processor
LOW
CUT
IN/
OUT
INPUT
x10
Hz
x10
HzFREQUENCY
Hz
130
70 220
40 400
dB
10
6
3
1
GAIN
REDUCTION
dBu
IN/OUT
LEVEL
-10
0
+10
PEAK
PEAK
FREQUENCY
Hz
630
200 2k
1.1k
360
+14-2
THRESHOLD
dBu
+6
-10 +22
dB
+6-6
GAIN
dB
0
-12 +12
SPEED
FAST
SLOW
FREQ
40Hz
80Hz
METER
INPUT
OUTPUT
0dB
-8
-16
-24
CUT
0dB
-8
-16
-24
CUT
INPUT/OUTPUT GRAPHIC EQUALIZER NOTCH1 NOTCH 2 LIMITER LOW CUT
Power Amp
R410 Series II
410 series II
METER
-3
-6
-12
+3
+6
+12
25
0
-3
-6
-12
+3
+6
+12
0
40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K
p.a./monitor speaker processor
LOW
CUT
IN/
OUT
INPUT
x10
Hz
x10
HzFREQUENCY
Hz
130
70 220
40 400
dB
10
6
3
1
GAIN
REDUCTION
dBu
IN/OUT
LEVEL
-10
0
+10
PEAK
PEAK
FREQUENCY
Hz
630
200 2k
1.1k
360 +14-2
THRESHOLD
dBu
+6
-10 +22
dB
+6-6
GAIN
dB
0
-12 +12
SPEED
FAST
SLOW
FREQ
40Hz
80Hz
METER
INPUT
OUTPUT
0dB
-8
-16
-24
CUT
0dB
-8
-16
-24
CUT
INPUT/OUTPUT GRAPHIC EQUALIZER NOTCH1 NOTCH 2 LIMITER LOW CUT
R410 Series II
410 series II
METER
-3
-6
-12
+3
+6
+12
25
0
-3
-6
-12
+3
+6
+12
0
40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K
p.a./monitor speaker processor
LOW
CUT
IN/
OUT
INPUT
x10
Hz
x10
HzFREQUENCY
Hz
130
70 220
40 400
dB
10
6
3
1
GAIN
REDUCTION
dBu
IN/OUT
LEVEL
-10
0
+10
PEAK
PEAK
FREQUENCY
Hz
630
200 2k
1.1k
360 +14-2
THRESHOLD
dBu
+6
-10 +22
dB
+6-6
GAIN
dB
0
-12 +12
SPEED
FAST
SLOW
FREQ
40Hz
80Hz
METER
INPUT
OUTPUT
0dB
-8
-16
-24
CUT
0dB
-8
-16
-24
CUT
INPUT/OUTPUT GRAPHIC EQUALIZER NOTCH1 NOTCH 2 LIMITER LOW CUT
House Mix
Power Amp
Power Amp
Mixer
R410 Series II
410 series II
METER
-3
-6
-12
+3
+6
+12
25
0
-3
-6
-12
+3
+6
+12
0
40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K
p.a./monitor speaker processor
LOW
CUT
IN/
OUT
INPUT
x10
Hz
x10
HzFREQUENCY
Hz
130
70 220
40 400
dB
10
6
3
1
GAIN
REDUCTION
dBu
IN/OUT
LEVEL
-10
0
+10
PEAK
PEAK
FREQUENCY
Hz
630
200 2k
1.1k
360 +14-2
THRESHOLD
dBu
+6
-10 +22
dB
+6-6
GAIN
dB
0
-12 +12
SPEED
FAST
SLOW
FREQ
40Hz
80Hz
METER
INPUT
OUTPUT
0dB
-8
-16
-24
CUT
0dB
-8
-16
-24
CUT
INPUT/OUTPUT GRAPHIC EQUALIZER NOTCH1 NOTCH2 LIMITER LOWCUT
R410 Manual 6/8/99 10:41 AM Page 8

Should a problem arise with the product, please contact your
authorized DOD Electronics dealer for return/repair procedures.
DOD Warranty
The warranty registration card must be mailed within ten days
after the purchase date to validate this warranty.
DOD warrants this product, when used solely within the U.S.,
to be free from defects in material and workmanship under nor-
mal use and service.
DOD Electronics liability under this warranty is limited to
repairing or replacing defective materials that show evidence of
defect, provided the product is returned through the original
dealer, where all parts and labor will be covered up to a period
of one year. The company shall not be responsible for any con-
sequential damage as a result of the products use in any circuit
or assembly.
Proof of date of purchase is considered to be the burden of the
consumer.
DOD reserves the right to make changes in design or
make improvements upon this product without incurring any
obligation to install the same on PRODUCTS PREVIOUSLY
MANUFACTURED.
The foregoing is in lieu of all other warranties, either expressed
or implied, and DOD neither assumes nor authorizes any person
to assume for it any obligation or liability in connection with
the sale of this product. In no event shall DOD or its dealers be
liable for special or consequential damages or form any delay
in the performance of this warranty due to causes beyond their
control.
9
R410 Manual 6/8/99 10:41 AM Page 9

10
Specifications
Frequency Response: 10Hz - 30kHz, ±0.5dB.
THD + Noise: < 0.04% @ 1kHz.
Signal to Noise Ratio: Better than 97dB.
Input Impedance: 20kΩunbalanced, 40kΩbal-
anced.
Maximum Input Level: +21dBu (ref; 0.775
VRMS).
Output Impedance: 51Ωunbalanced, 102Ωbal-
anced.
Maximum Output Level: ±21dBu.
Thru Output: Hard-wired to input.
Graphic EQ Band Separation: 2/3 Octave.
Notch Filter Q: > 40.
Limiter Attack Time: Slow 18ms
Fast 2ms.
Limiter Release Time: Slow 180ms
Fast 20ms.
Low Cut Filter Slope: 12dB/Octave.
R410 Manual 6/8/99 10:41 AM Page 10

A Harman International Company
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4411 1100 00 SS SSEE EERR RRII IIEE EESS SS II IIII II
R410 Manual 6/8/99 10:41 AM Page 11

DOD ELECTRONICS CORPORATION
8760 SOUTH SANDY PARKWAY
SANDY, UTAH 84107
INTERNATIONAL DISTRIBUTION
3 OVERLOOK DR. UNIT 4
AMHERST, NEW HAMPSHIRE 03031
U.S.A.
FAX [phone]
DOD IS A REGISTERED TRADEMARK OF DOD ELECTRONICS
© 1995 DOD ELECTRONICS CORPORATION
PRINTED INU.S.A. 7/95
MANUFACTURED INTHE U.S.A.
DOD 410 18-2101-B
R410 Manual 6/8/99 10:41 AM Page 12