SPL Dynamics MD-600.1 User manual

SPL DYNAMICS MD-series amplifiers providehighperformancesound reinforcement
for your car audio equipment. Its versatility enables compatibility with optional
Equalizers, Active Crossovers and Digital Signal Processors in a customized system.
Its built-invery wide range bandpass crossoversallow you to make all the cut-offs of
a full active system withamplifier’sfilters.
MD - series
www.spldynamics.fi
Class D Amplifier
To achieve optimum performance, it is highly recommended that you read this
Owners Manual before beginning installation. Check also our webpages to have
more informationabout different system configurations.
OPERATING INSTRUCTIONS
BEFOREOPERATING THE UNITS, PLEASE READ THIS MANUAL
THROUGHLY AND RETAIN IT FORFUTUREREFERENCE
R
R
MD-60.4
MD-200.4
MD-400.2
MD-600.1
MD-1500.1
INTRODUCTION
FERTURES
WARNING
2
• Variable LPF : 50Hz - 4KHz
• Variable HPF : 15Hz - 600Hz (x1),150Hz - 6KHz (x10)
•Frequency Multiplier Switch Control
•Bandpass Filters: LPF & HPF can be used at the same time
•Soft-On / Turn-Off Circuit
•Overheat and Short CircuitProtection
•MOS-FET Pulse Modulated Power Supply
•Automotive Style Protection Fuses
•UprightEasyAccess Speaker and Power Terminals
•Power ON and Protection LED Indicator
2/4 Channel
• Variable LPF : 40Hz - 180Hz
•Variable Subsonic 17 - 50Hz
•Variable Bass Freq 30 - 80Hz
•Variable Phase Control 0-180 degrees
•Bass Boost Centered 0dB 6dB 12dB
•Remote Level Control
•Soft-On / Turn-Off Circuit
•Overheat and Short CircuitProtection
•MOS-FET Pulse Modulated Power Supply
•UprightEasyAccess Speaker and Power Terminals
•Power ON and Protection LED Indicator
Mono
•Variable LPF : 50Hz - 4KHz
•Variable HPF : 15Hz - 600Hz (x1),150Hz - 6KHz (x10)
•Frequency Multiplier Switch Control
•Bandpass Filters: LPF & HPF can be used at the same time
•Soft-On / Turn-Off Circuit
•Overheat and Short CircuitProtection
•MOS-FET Pulse Modulated Power Supply
•Automotive Style Protection Fuses
•UprightEasyAccess Speaker and Power Terminals
•Power ON and Protection LED Indicator
2/4 Channel
•Variable LPF : 40Hz - 180Hz
•Variable Subsonic 17 - 50Hz
•Variable Bass Freq 30 - 80Hz
•Variable Phase Control 0-180 degrees
•Bass Boost Centered 0dB 6dB 12dB
•Remote Level Control
•Soft-On / Turn-Off Circuit
•Overheat and Short CircuitProtection
•MOS-FET Pulse Modulated Power Supply
•UprightEasyAccess Speaker and Power Terminals
•Power ON and Protection LED Indicator
Mono
High powered audio systems in a vehicle are capable of generating “Live Concert”
high levels of sound pressure. Continued exposure to excessively high volume sound
levels may cause hearing loss or damage. Also, operation of a motor vehicle while
listening to audio equipment at high volumelevels mayimpair your ability to hear
external sounds such as; horns, warning signals,or emergency vehicles, thus
constituting to a potential traffic hazard.In theinterest of safety, Consumer
Electronics recommends listening at lowervolume levels whiledriving.

WIRING CONNECTIONS
a. Select a suitablelocation that is convenient for mounting. is
accessible for wiring,and has ample room for air circulation
and cooling.
b. Use the amplifier as a template to mark the mountingholes.
Remove the Amplifier and drill 4 holes.USE EXTREME CAUTION,
INSPECT UNDERNEATH SURFACE BEFORE DRILLING.
c. Secure the Amplifierusingthe screws provided.
A. CONNECTING THE POWER (Fig. 1)
CAUTION :
AS A PRECAUTION, IT IS ADVISABLE TO DISCONNECT THE VEHICLE’S BATTERY
BEFORE MAKING CONNECTION TO THE +12 VOLT SUPPLY WIRING.
50/33/20 mm2 depending from the model( Thicker if planning for additional
Amplifiers) wire is recommended for both the power and ground wires. 12 Gauge,
for the remote turn-on wire. Both types are available at most Mobile Audio Dealers
or InstallationShops.
(1) GROUND: To Vehicle Chassis
To avoid unwanted ignition noise caused by ground loops, it is essential that the
Amplifier be grounded to a clean, bare,metal surface of the vehicle’s chassis.
NOTE:
GROUND WIRE SHOULD NOT BE EXTENDED MORE THAN 3 FT. (1 METER).
(2) +12 Volt(Fused) Constant Power: To Battery (+)
Due to the power requirements of the Amplifier, this connection should be made
directly to the positive (+) terminal of battery. For safety measures, install an in-line
Fuse Holder (not included) as closeto the battery positive (+) terminal as possible
with an ampere rating;not to exceed total valueof fusesinAmp.
(3) Remote Turn-On Input: To Power Antenna output of Car Stereo This Amplifier is
turned “ON” remotely when thevehicle’s stereo is turned “ON”.
NOTE :
If your radio does not have a +12 Volt output lead when the radio is turned ON, the
“RMT” terminal on the Amplifier can be connected to vehicle’saccessory circuit that
is live when the keyis “ON”.
MD - 60.4 : 40A x 1 MD - 200.4 : 35A x 3 MD - 400.2 : 35A x 3
MD -600.1 : 30A x 2 MD -1500.1 : NO
3 4
PLANNING YOUR SYSTEM
MOUNTING YOUR AMPLIFIER
Before beginning theinstallation, considerthefollowing:
a. If you plan to expand your system by adding other components sometime in the
future, ensure adequate space is left,andcooling requirements are met.
b. There has to be pre-amp outputs on your headunit.
SPL Dynamics Class D amplifiers has beendesigned to accept only Low-Level
signal source. So there hasto be pre-amp outputs on yourheadunit.
c. Are your components matched? The RMS power rating of your speakers must be
equal or greater thanthe amplifier’s. They also must be 1 - 8 Ohms impedance.
(Thisinformation is normallyprinted on the speaker magnet).
d. Consider both thelength of your leads, and routing when determiningthe
mounting location. Pre-Amp Input Jacksrequire alength of high quality
shielded male to maleRCA patch cord.
The mounting position of your Amplifier will have a great effect on itsability to
dissipate the heat generated during normal operation. It has an ample heat sink for
heatdissipation, and also designed with a thermal shut-down(for heat protection)
circuit,makingitreasonably tolerant of mounting variations.Any configurationwhich
allows moving airto be directedoverthe cooling finswill improve heat dissipation
dramatically. DO NOT enclose the amplifierin a smallbox orcoverit so thatair
cannot flow around fins.
Temperatures in car trunkshave been measured as high as 175 F(79.5 C) in the
summer time. Since the thermal shut-down point for the Amplifieris 185 F(85 C), it
is easy to see that it must be mounted for maximum cooling capability. To achieve
maximum advantage of convectionairflow inan enclosed trunk, mountthe amplifier
in a vertical position, on a vertical surface.
Cooling requirements are considerably relaxed when mounting inside the passenger
compartment since the driver will not often allowtemperatures to reach acritical
point. Floor mounting under the seat is usually satisfactory as long as there is at
least 1 inch(2cm) above the Amplifier’s fins forventilation.
NOTE :
Use always low-level input if there is pre-amp outputs in your headunit.
Distortion level is considerably lower from pre-amp(Low Level) outputs.

Model : MD - 400.2 B. VARIABLE “LPF” LOW-PASS FILTER
MONO (40Hz-180Hz):
Low-Pass filter circuitry of SPL Dynamics Class D Amplifiers is always activated
because these models are designed only to subwoofer use. Low-Pass filter
allows frequencies below (40-180Hz) to be amplified.
2/4CH (50Hz-4KHz):
“12/24dB” activates the Low-Pass filter circuitry, thus allowing frequencies
below (50Hz-4KHz) to be amplified. You can use this filter as :
• Subwoofer Low-Pass filter
• Full-Active system’s Midbass Low-Pass filter
• Full-Active system’s Midrange Low-Pass filter
For normal full-range frequency speaker configuration, as component system with
passive crossover or coaxial speakers, set to “OFF”.
5 6
Model : MD-600.1
Model : MD - 1500.1
Fig. 1
Fig. 1
Model : MD-60.4
Model : MD - 200.4
Fig. 1
Fig. 1
Fig. 1

Wire routing is CRITICAL for NOISE FREE PERFORMANCE. Observe the following:
1. Always use high quality RCA type shielded cables.
2. Always use the shortest length possible.If the cableis toolong.
make an “S” type loop(not a coiled loop) in the centerof the
cable to take up any excess.
3. Never cut the shielded cable and re-spliceit.
4. Never route any Amplifier input cables near or parallel to
speaker outputs, high energyignitionwires, or near computer
controlled ignition circuit units(Computer units may be found
behind or underthe dash panelinlate model cars).
This GREEN LED will illuminate when the amplifier is turned “ON”. If it failsto
illuminate, check thepowerconnectionsto the Amplifier andfuses.
PROTECTION CIRCUIT
Should the Amplifier be “short circuited”overloaded or overheated. the protect
circuit will “shut-down” the Amplifier
CAUTION:
This Amplifier is designed to operate with a minimum load impedance of 1 Ohmsin
singleamplifieruse or 2 Ohms in two amplifiersbridged configurations.Subjectingto
impedances lower than recommended,may constitute to potential damage to the
MOSFET power supply. Followinstructionson section “ WIRING CONNECTIONS”
for furtherinformation.
In orderto achieve maximum signal-to-noise performance “LEVEL” control adjusts
the signal levelfrom your headunitto match the Amplifier’s sensitivity.
IT IS NOT A VOLUME OR POWER CONTROL!!!
To adjust, proceed as follows:
a. Set input “LEVEL” control to “MIN”.
b. Turn your headunit’s volume to maximum level. If distortion is heard decrease
headunit’s volume until the sound is clear.
c. Turn the “LEVEL” controltoward “MAX” in stages, until the onset of audible
distortionis heard.then decrease to level prior to the point of audibledistortion
NOTE :
Not performing above adjustment procedure and/or simply setting “LEVEL” control
at or near “MAX” position, may induce electrical audio noise into the system or
break down of the amplifier because driving the amplifier to distortion.
POWER INDICATOR LED
INPUT SENSITIVITY (LEVEL)C ONTROL (Flg.2)
87
C. MONO: VARIABLE SUBSONIC FILTER (17-50Hz)
“ON” activates the Subsonic filter circuitry, thus allowing frequencies above
(17-50Hz) to be amplified.
D. 2/4CH: VARIABLE “HPF” HIGH-PASS FILTER (15Hz-600Hz / 150Hz-6KHz)
“12/24dB” activates the High-Pass filter circuitry, thus allowing frequencies above
(15Hz-600Hz / 150Hz-6KHz) to be amplified. You can use this filter as:
• Subwoofer Subsonic filter
• Coaxial speakers High-Pass filter
• Component system High-Pass filter
• Full-Active 4-way system’s Midbass High-Pass filter
• Full-Active 4-way system’s Midranges High-Pass filter
• Full-Active 3-way system’s Midranges High-Pass filter
• Full-Active system’s Tweeter High-Pass filter
12dB = filter slope 12dB/oct 24dB = filter slope 24dB/oct
NOTE:
We recommend to use High-Pass filter always when the amplifier’s channel is not
driving subwoofer, because full -range speakers can break down if subwoofer
frequencies are played with them.
BANDPASS FILTER
S-series amplifier’s LPF and HPF can be used at the same time so they can be used
as a bandpass filters. Bandpass Filters can be used for:
• Subwoofer
• Full-Active 4-way system’s Midbass
• Full-Active 4-way system’s Midranges
• Full-Active 3-way system’s Midranges
FULL-ACTIVE SYSTEM
In Full-Active 3-way system there is subwoofer(s), midranges and tweeters.
2/4 amplifier channels are needed to drive Full-Active 3-way system.
(MD-400.2 / MD-60.4 / MD-200.4)
In Full-Active 4-way system there is subwoofer(s), midbasses, midranges and tweeters.
2/4 amplifier channels are needed to drive Full-Active 4-way system.
(MD-400.2 / MD-60.4 / MD-200.4)
E. CONNECTING LOW LEVEL INPUTS (RCA jacks)
NOTE: DO NOT use in conjunction with High Level input wires.

Model : MD - 400.2
Model : MD - 600.1 / MD - 1500.1
CONNECTING THE SPEAKERS
Model : MD-600.1
SPEAKER
1~4 Ohm
Model : MD - 1500.1
SPEAKER
1~4 Ohm
910
Model : MD-60.4
Model : MD - 200.4
Fig. 2
Fig. 2
Fig. 2
Fig. 2

Model : MD-60.4
a. 4 Channel Mode
SPEAKER
2~8 Ohm
SPEAKER
2~8 Ohm
SPEAKER
2~8 Ohm
SPEAKER
2~8 Ohm
b. 3 Channel Mode
SPEAKER
2~8 Ohm
SPEAKER
4~8 Ohm
SPEAKER
2~8 Ohm
c. 2 Channel Mode
SPEAKER
4~8 Ohm
SPEAKER
4~8 Ohm
a. Stereo Mode
Model : MD - 400.2Model : MD - 400.2
SPEAKER
2~8 Ohm
SPEAKER
2~8 Ohm
b.Mono Mode
SPEAKER
4~8 Ohm
11 12

WARNINGS
Investigate the layout of your automobile throughly before drilling or cutting any
holes.Take care whenyouwork nearthegas tanks, lines, or hydraulic lines. and
electrical wiring. Don’t usepower amplifier unmounted, Attach this system securely
to the automobile to prevent damage, particulary in the event of an accident. Don’t
mount this system so that the wire connections are unprotected or are subject to
pinching or damage from nearby objects, The +12VDC power wire must be fused
at the battery positive terminal connection. Before making or breaking power
connections at this system power terminals. Disconnect the +12V wire at the
batteryend. Confirm your radio/cassetteplayer and/or other equip is turnedoff
while connectingthe input jacksand speaker terminals. If you need to replace the
power fuse, replace it only with a fuse identical to that suppliedwith the system.
Using a fuse of differenttype or ratingmay result in damage to this system which
isn’t covered by the warranty.
Model : MD - 200.4
a. 4 Channel Mode
b. 3 Channel Mode
c. 2 Channel Mode
SPEAKER
2~8 Ohm
SPEAKER
2~8 Ohm
SPEAKER
2~8 Ohm
SPEAKER
2~8 Ohm
SPEAKER
2~8 Ohm
SPEAKER
4~8 Ohm
SPEAKER
2~8 Ohm
SPEAKER
4~8 Ohm
SPEAKER
4~8 Ohm
1413

NOTICE :
•DUE TO VARIABLE FACTORS, POWER RATING MARGIN OF ERROR ± 10%
IS ALLOWED.
•ALL POWER RATINGS ARE TESTED AT 14.4VDC
•WHEN VEHICLE’S ENGINE IS STOPPED ITS BATTERY’S VOLTAGE DROPS
NORMALLY LOWERING RATING INDICATED WITH THIS UNIT.
• WE FOLLOW A POLICY OF CONTINUOUS PRODUCT IMPROVEMENTS AND
MODIFICATIONS. DUE TO THIS REASON SPECIFICATIONS, WARRANTIES,
FEATURES, PRICES, CONFIGURATIONS AND AVAILABILITIES ARE WITH NO
GUARANTY AND SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
www.spldynamics.fi
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SPECIFICATION
SPECIFICATION
Total Channel @ 1 Ohms
85W x 4CH
60W x 4CH
0.2%
10Hz-20KHz
50Hz-4KHz
15Hz-600Hz
150Hz-6KHz
0.2mV-6V
20K Ohms
40A x 1
170x53x198mm
300W x 4CH
200W x 4CH
600W x 2CH
0.2%
10Hz-20KHz
50Hz-4KHz
15Hz-600Hz
150Hz-6KHz
0.2mV-6V
20K Ohms
35A x 3
170x53x312mm
600W x 2CH
400W x 2CH
1150W x 1CH
0.2%
10Hz-20KHz
50Hz-4KHz
15Hz-600Hz
150Hz-6KHz
0.2mV-6V
20K Ohms
35A x 3
170x53x312mm
420W x 1CH
300W x 1CH 600W x 1CH
610W x 1CH
0.2%
10Hz-160KHz
17Hz-50Hz
0-180 Degree
40Hz-180Hz
150mV-6V
20K Ohms
30A x 2
170x53x282mm
1000W x 1CH
1600W x 1CH
0.2%
10Hz-160KHz
17Hz-50Hz
0-180 Degree
40Hz-180Hz
150mV-6V
20K Ohms
20K Ohms 20K Ohms 20K Ohms 20K Ohms 20K Ohms
170x53x392mm
Total Channel @ 2 Ohms
Total Channel @ 4 Ohms
THD @ 1 Ohms
170W x 2CHBridge Power @ 4 Ohms
Frequancy Respones ±1.0dB
55dB 55dB 55dBChannel Separation
Subsonic Filter
Phase Control
LPF: Low Pass Filter
HPF: High Pass Filter(x1)
HPF: High Pass Filter(x10)
Adjustment Sensitivity Range
Input Impedance
Low Level
Fuse
Dimensions (W x H x D)mm
MD-60.4 MD-200.4 MD-400.2 MD-600.1 MD-1500.1
15