LT/ST Power Amplifier
Owner’s Manual
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table of contents
p.2
how to use this manual
1
p.3
introduction
p.5
installation
2 unpacking
mounting
cooling and ventilation
powering
maintenance
p.9
features overview
3 front panel
rear panel
p.15
operation modes
4 stereo
contents
parallel
bridged
p.17
connections
5
input
output
p.21
safety
6 tourclass protection
precautions
user responsibility
p.25
service and support
support
7
contact us
registration
p.27
specifications
a
b
c
appendices
p.28
block diagram
p.29
wire gauge charts
p.1
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how to use this manual
LT / ST owner’s manual
1
conventions
terms
official Crest Audio features and
each indicator or control on the amplifier will appear as: terms
actions
specific actions or selections the user can execute will appear as: actions
tasks
are broken down into steps 1
2
3
warnings
Procedures not to attempt.
a
Issues or hazards to keep in
mind when operating
the equipment.
indicators
What to look for on
®
the equipment display.
Alerts, indicators, or
prompts that may appear.
tips
Preferred methods.
Helpful hints.
Feature insights.
+
see
see—refers to other sections of the manual containing
supplementary information on the current topic or a related issue
note
note—supplementary feature information
p.2
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introduction
1
welcome
Congratulations on your purchase of a new LT / ST Series professional power amplifier and thank you for your con-
fidence in Crest Audio products.You are among the growing number of audio professionals who have made Crest
Audio one of the world’s leading suppliers of professional and commercial/industrial audio systems.
For your safety, please read the Important Precautions section before installing and operating the amplifier.The Crest
Audio LT and ST Series amplifiers are designed for high operating efficiency and accurate sonic performance across
the full audio bandwidth, even under stressful conditions.
The CrestAudio LT and ST series both utilize Class D amplifier technology which greatly improves the efficiency of
the amplifier and reduces the power demand from the mains supply.The LT amplifier incorporates a linear power
supply whereas the ST uses a resonant switching supply with power delivery characteristics similar to a linear sup-
ply but with greatly reduced weight. Both power supply designs are built to the same uncompromising standards.
This, combined with major advances in amplifier technology provides for extreme reliability and sonic accuracy for
which Crest products are renown.
The Crest audio LT series and ST series amplifiers differ in power supply design,electrical efficiency and weight how-
ever, their feature sets are identical. For this reason, the majority of this users manual applies to both models.
LT linear-toroid power supply
A traditional linear power supply is used in the LT Series. Because of the amplifier sections efficiency, (approx
93%) the transformer does not need to be as big or as heavy.This gives the LT Series an advantage in deliver-
ing more power in a more compact package.
The efficiency of the output stage also gives the power supply the ability to handle heavy-duty cycles without
compromising sonic integrity.
ST resonant-switching power supply
The ST amplifier switching power supply employs a resonant design which utilizes zero-power switching
technology.
Benefits of resonant-switching include:
• reduced power component stress for
better reliability and efficiency
• 20dB lower noise than conventional switching supplies
(and therefore more EMC friendly)
• behaves like a classic linear supply, but with the added
advantages of size and weight reduction
In order to maintain strict quality assurance standards,all CrestAudio power amplifiers are built in our state-of-the-
art USA manufacturing facility. Internal components are the finest available and key sub-assemblies are pre-tested
before final assembly. Each amplifier is “burned in” and thoroughly tested (using precision audio test equipment)
®
before shipping. In addition, all LT / ST Series amplifiers incorporate Crest’s exclusiveTourClass protection features
to safeguard both internal circuitry and connected loudspeakers.
This proven combination of advanced design,quality construction and comprehensive circuit protection is your guar-
antee of fail-safe reliability. You can depend on consistent, stable performance even when your LT / ST Series ampli-
fier is subjected to punishing extremes in the most demanding fixed or mobile sound reinforcement applications.
p.3
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installation
2
/
/
/
/
/
what to do with the shipping carton
proper rack-mounting technique
keeping the amplifier cooled
required AC line voltages
unpacking
mounting
cooling and
ventilation
routine maintenance practices
powering
maintenance
p.5
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installation
LT / ST owner’s manual
2
unpacking
Please inspect the amplifier carefully immediately after unpacking. If you find any dam-
For replacement
packaging, call Crest
Audio’s
Customer Service
Department directly.
age, notify your supplier/dealer immediately. Only the shipper may file a damage claim
with the carrier for damage incurred during shipping. Be sure to save the carton and
all packing materials for the carrier’s inspection.
+
If the packing materials are in good condition, please save them.
If you ever need to ship the unit anywhere without mounting it in a rack, you should
take advantage of the original factory packing materials in order to avoid unnecessary
damage.
see—service and support
mounting
All LT / ST Series amplifiers mount in standard 19-inch racks and occupy two rack
spaces. Four front-panel mounting holes are provided on each amplifier. Rear mount-
ing ears give additional support and use of rear supports is highly recommended in all
mobile and touring sound systems. Handles are fitted standard.
LT shown. ST has the same dimensions
front
height
3.47"/
88 mm
front width 19"/483mm
LT / ST shown
rear width 17"/432mm
front
height
3.47"/
88mm
depth14"/356mm
p.6
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installation
2
cooling and ventilation
LT / ST amplifiers use a forced air cooling system to maintain a low,even operating tem-
perature.
Make certain that there
is enough space around
the front and rear of the
amplifier to allow the
heated air to escape.
When mounting in a rack,
try to avoid using doors
or covers on the front
and rear of the enclosure;
the exhaust air must not
be impeded
a
Air is drawn in by a DC fan on the rear panel, flows through the cooling fins and then
exhausts through the front panel vent.
Heat sink temperature is monitored and controls the variable speed fan. Fan speed
increases only as required, keeping fan noise to a minimum.
suggestion
In racks with closed backs
allow at least one stan-
dard-rack-space opening
for every four amps.
If the heat sink surpasses its maximum allowed temperature, the thermal protection
circuit will activate and open the output relays allowing the amplifier to cool to a safe
temperature. To continue using the amp,it must be reset by turning the power off and
then turning it back on again.
Thermal protect activation only occurs under extreme thermal conditions and is not
part of normal operation.
powering
Unless otherwise specified when ordered, LT / ST amplifiers are supplied factory set
to following voltage options :
Option 1 US domestic
nominal 120Vac 60Hz for rated power output
(safe operating range 100 - 132Vac )
Option 2 export models nominal 230Vac 50Hz for rated power output
(safe operating range 200 - 264Vac )
note
Due to the nature of the switching power supply in the ST, 50 - 60Hz operation is acceptable for both
options.
maintenance
LT / ST amplifiers require no routine maintenance.
If the amplifier is used in an extremely dusty or smoky environment , the unit should
be periodically blown free ( using compressed air ) of any foreign matter that may have
built up inside the unit.
Users will not need to make any adjustments to the amplifier during its lifetime.There
are no user-serviceable parts or adjustments that require opening the amplifier.
p.7
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features overview
3
/
/
location of connectors and controls
legend of panel symbols
front panel
rear panel
p.9
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features overview
LT / ST owner’s manual
3
LT / ST shown
2
1
3 4 5 6 7
8
8
9
1
2 3 4 5 6 7
9
p.10
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features overview
3
front panel
Rack Mounting Ears
1
Two front-panel mounting holes are provided on each mounting ear.
Channel Level attenuators
2
Two input attenuators adjust level for their respective amplifier
channels. In Bridged Mono and Parallel modes, the channel A
attenuator controls overall signal level (see rear panel mode switch
description).
Protect
3
This Red LED indicates that the amp channel is in Protect mode.
During Power up, the amp briefly goes into protect mode in order
to prevent any loud spikes from being fed the speakers. After a few
seconds the amp comes out of protect mode and is ready for
normal operation. If the amp stays in Protect mode, this indicates
that there may be a problem internal to the amp. If the amp goes
into Protect mode during operation this indicates that either a
problem has developed internal to the amp or the amp is being
over-stressed and needs to cool down. After a Protect condition, the
amp must be reset by cycling the power off and then on again in order
to continue using it.
ACL / IGM
4
5
This Red LED illuminates when either the ACL or IGM protection
circuitry is engaged. See Section 6,Tourclass Protection for more
information on these Crest-exclusive features.
-24, -18, -6, 0dB
The first three LEDs (-24, -18, -6,) are Green and the last led, 0dB is
yellow. These LEDs respond to the incoming program material as peak
meters. Under normal operating conditions the Green LEDs illuminate
with the dynamics of the program material and theYellow LEDflashes
during the loudest peaks.
Signal
6
7
Green LED varies in intensity in response to signals below -24 dB.
Active
Green LED illuminates when the amp is on to show that the channel
is active.
Fan Outlet Grill
8
LT & ST Series amplifiers are cooled by a single rear-mounted fan.
Cool air flows over the heat sink and exhausts through the front grill.
Make sure this outlet remains clear to allow unrestricted airflow.
9 Power switch
This switch turns the amp on and off. If the amp doesn’t turn on when
the switch is in the ON position, check the circuit breaker on the rear
panel.
p.11
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LT / ST shown
6
2
3
4
5
1
7
rear panel legend
rear panel
input connection
IEC power connector
1
XLR connector polarity
TRS connector polarity
Accepts a standard IEC terminated power cable
Breaker
2
bridged mono mode
parallel mode
Resettable circuit breaker - no fuses are used. Breaker can trip due to
a power surge or over-voltage condition. If it trips once, reset it. If it
continues to trip, the amplifier may need servicing.
stereo mode
Fan
3
chassis ground lifted-position
The fan operates continuously while the amp is on. An internal
temperature sensor increases the speed of the fan during high
temperature conditions. Air enters through the rear of the
amp and exits through the front grill. Be sure to allow adequate air
flow from the rear of the rack the amp is mounted in.
chassis ground grounded-position
output connection
speakon output
channel A stereo/parallel
channel B stereo/parallel
bridged mono
five-way binding post
channel A stereo/parallel
bridged mono
channel B stereo/parallel
p.12
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features overview
3
rear panel
Output connections
4
Speakers can be connected via the high current binding posts and
the industry-standard Speakon (NL-4) connectors.
Binding posts: One pair (Red- hot, Black- ground) per channel.
Speakons - One connector for each channel. In Bridged Mono
mode, the Speakon connector for Channel A is used exclusively
(see Operation Modes).
Never connect a hot
(red) output to ground
or to another hot (red)
output!
a
Ground lift switch
5
The recessed two-position ground lift switch is used to isolate the
amp’s signal ground from the chassis/AC ground.The factory default
setting is to the right, Grounded.To lift, or disconnect the signal
ground from the chassis/AC ground, slide the switch to the left.
In situations where chassis ground must be lifted, use this switch -
never lift the ground prong on the AC connector.
In situations where an UNBAL-
a
ANCED signal is fed to the amp, it’s
important to ground the unused
input. If the inverting (-) input of an
amp channel is left floating, the chan-
nels gain will drop by 6 dB. In effect,
the amp will not be as loud. For more
information about this, ask your dealer
or contact Crest AudioTechnical
Support directly.
Input connections
6
7
Input signals can be connected to the amp via the Phoenix connec-
tors, the 1/4”TRS connectors and the Female XLR (pin 2 hot) con-
nectors. Input sensitivity is .775v (0 dBv) for full rated output
power. See Connections
Mode selector switch
Do not adjust the mode
a
selection switch while
This recessed, three position switch configures the amplifier for
Stereo, Parallel or Bridged Mono operation. The default factory
setting is Stereo. See - operation modes.
the amplifier is turned-on.
p.13
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operation modes
4
/
/
/
choosing the appropriate mode
stereo
switching between operation modes
special considerations when using bridged mode
parallel
bridged
p.15
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operation modes
LT / ST owner’s manual
4
mode selection
The three-position,recessed Mode Select switch (located on the rear panel)
configures the amplifier for Stereo, Parallel or Bridged mode. Amplifiers are
factory-configured for Stereo mode. Shut the amp off before changing
modes.
stereo
In Stereo mode,both channels operate independently,with their input atten-
uators controlling their respective levels.Signal at ChannelA’s input produces
output at Channel A’s output,while signal at Channel B’s input produces out-
put at Channel B’s output.Recommended minimum nominal load impedance
for stereo operation is 2 Ohms per channel.
parallel
When set to Parallel mode, program material applied to Channel A’s input
will appear at both Channel A and B outputs.The attenuator for Channel A
controls the level for both A and B outputs.
bridged
Bridged mode straps both amplifier channels together to make a single-
channel monaural amplifier. One channel pushes and the other pulls equally,
increasing the power output over that of either channel alone
(see Specifications). Signal is applied to the Channel A input only. Channel
A’s attenuator is used to control signal level.
Use extreme caution when operating the amplifier in Bridged mode. Never
ground either side of the speaker cable when the amplifier is in Bridged
mode; both sides are “hot.”
If an output patch panel is used, all connections must be isolated from each
other and from the panel.The recommended minimum nominal load imped-
ance in the Bridged mode is 4 ohms, which is the equivalent to driving both
channels separately at 2 ohms.
Connecting amplifier
outputs to oscilloscopes
see—connections for examples of mode-specific wirings
a
or other test equipment
while the amplifier is
in bridged mode may
damage both the amplifier
and test equipment!
p.16
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connections
5
/
/
speakon
proper wiring schemes for connectors:
input
binding post
XLR 1/4” TRS
correct signal paths: stereo, parallel and bridged
output
Phoenix 3 pin
p.17
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connections
LT / ST owner’s manual
5
inputs
LT / ST amplifiers are configured standard with pin 2 hot on XLR inputs.
female XLR
TRS pinouts
3-pin Phoenix (view of connector on rear of amp)
In + In - Com
outputs
Speakers are connected using the high-current five-way binding posts
or speakon connectors, or both.
Very high current is
a
available at the outputs.
bridged mono
stereo/parallel
Please connect your
output cable to the + and
- terminals of each sec-
tion precisely as shown.
Speaker + to PIN 1+
Speaker - to PIN 2+
Speaker + to PIN 1+
Speaker - to PIN 1-
see—operation modes
p.18
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connections
5
stereo mode
five-way binding post connectors
parallel mode
five-way binding post connectors
bridged mono mode
five-way binding post connectors
p.19
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connections
LT / ST owner’s manual
5
stereo mode
speakon output connectors
parallel mode
speakon output connectors
bridged mono mode
speakon output connectors
Speaker + to PIN 1+
Speaker - to PIN 2+
p.20
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safety
6
/
/
/
the owner’s role in amplifier safety
protecting your speakers
user
responsibility
description of TourClass protection features
speaker
protection
TourClass
p.21
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safety
user responsibility
LT / ST owner’s manual
6
Your LT / ST Series amplifier is very powerful and can be potentially dangerous to loud-
speakers and operators alike. It is your responsibility to read important precautions
(see the inside-front cover) and make sure that the amplifier is installed, wired, and
operated properly as instructed in this manual.
Many loudspeakers can be easily damaged or destroyed by overpowering, especially
with the high power available from a bridged amplifier.Always be aware of the speak-
er’s continuous and peak power capabilities. Crest Audio is not responsible for damage
to loudspeakers for any reason.
see—speaker protection
speaker protection
All loudspeakers have electrical, thermal and physical limits which must be observed to pre-
vent damage or failure.Cone or compression drivers can be damaged (sometimes to the point
of failure) from excessive power, low frequencies applied to high frequency drivers, severely
clipped wave forms,and DC voltage. All LT / ST Series amplifiers automatically protect speak-
ers from DC voltages and subsonic signals.
see—TourClass protection
Mid- and high-frequency transducers—compression drivers in particular—are highly suscep-
tible to damage from overpowering,clipped wave forms,or frequencies below their rated pass
band.When using an electronic crossover,make absolutely certain that the low and mid bands
are connected to the correct amplifiers and drivers—and not accidentally connected to those
for a higher or lower frequency band.
The amplifier’s clipping point is its maximum peak output power. At maximum peak output
power,CrestAudio LT / ST Series amplifiers will deliver more power than many speakers can
safely handle. Be sure the peak power capability of the amplifier is not excessive for your
speaker system.To ensure that the speakers never receive excessive power, and to prevent
amplifier clipping,use a properly adjusted external limiter (or a compressor with a ratio of 10:1
or higher) to control power output. Use one compressor/limiter for each frequency band in
systems with active electronic crossovers.
The ACL clip limiting circuit will automatically limit the duration of squared-off, continuous
wave forms applied to the speakers.The amplifier will,however,allow normal musical transient
bursts to pass. Of course, when the amplifier does clip, it is operating at its maximum output
power.Note that some speaker systems are packaged with proprietary“processors” that have
power limiting circuits and therefore should not require additional limiting. Do not drive any
low-frequency speaker enclosure with frequencies lower than its own tuned frequency; the
reduced acoustical damping could cause a ported speaker to bottom out even at moderate
power.Consult the speaker system specifications to determine its frequency limits,and employ
a roll-off filter if necessary.
recommended speaker cabling
The wire gauge charts will assist you in determining the optimum copper wire gauge for your
speaker cables.Remember that the speaker cable resistance robs amplifier power in two ways:
through power lost directly to resistance (often referred to as I2R loss),and through increased
total load resistance, which decreases the amount of power available from the amplifier.
Appendix C gives cable length figures in feet/AWG wire gauges and in metric values.
see—wire gauge
p.22
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safety
6
®
TourClass protection
Just like Crest Audio’s highly acclaimed Pro series amps, LT and ST amps incorporate
TourClass protection features. Derived from Crest Audio’s extensive experience with the
world’s largest sound rental companies, the TourClass group of circuits sets the industry
standard for assured protection of internal amplifier circuits and all connected loads.
ACL ACTIVE CLIP LIMITING
At the amplifier’s full power limit, or clipping point, ACL will be activated.This is indicated
by illumination of the ACL / IGM LED.The channel gain is automatically reduced, protecting
the loudspeakers from potential damage from the high power,continuous square waves that
would otherwise be produced. ACL may be activated by uncontrolled feedback, oscillations,
improper equipment gain settings, or an equipment malfunction upstream from the amplifi-
er. Only steady or excessive clipping (not normal program transients) will trigger ACL. The
circuit is virtually transparent in operation and full signal bandwidth is maintained.
IGM INSTANTANEOUS GAIN MODULATION
IGM is an innovative circuit that allows the amplifier to operate safely into loads as low as 2
ohms.When the amplifier sees a load that overstresses the output stage,the IGM circuit adjusts
the channel gain to a safe level. This gain control circuit is inaudible in normal use. In addition,
if extreme and sustained low impedance is encountered,the amplifier’s output relay will open.
AutoRamp
Auto Ramp operates every time the amplifier is turned on or is reactivated after a protect
condition is corrected.This exclusive CrestAudio feature gradually increases gain to the atten-
uator setting avoiding unnecessary stress on the loudspeakers.
Thermal Protect
Abnormally high heat sink temperatures will engage the Protect circuit and disconnects the
output relays. During this time the Prot LEDs will light red.The cooling fan will continue run-
ning at high speed. Normal operation resumes once the amplifier cools to a safe level.
Short Circuit
If an output is shorted (i.e. defective speakers or crossed speaker wires) the channel will shut-
down and can be re-set by turning the amplifier off, then on.
DC Voltage
If an amplifier channel detects DC voltage at its output terminals, the output relay will immediately
open to prevent loudspeaker damage. The protect LEDs illuminate.
Subsonic Frequencies
Built-in high pass filtering provides subsonic frequency protection for each channel.In addition,
at the output.
a relay will open if excessive subsonic energy appears
p.23
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service and support
7
/
/
when to get support
support
ways to contact Crest Audio
contact us
p.25
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service and support
LT / ST owner’s manual
7
support
In the unlikely event that your amplifier develops a problem, it must be
returned to an authorized distributor, service center or shipped directly to
our factory.
To obtain service, contact your nearest Crest Audio Service Center,
Distributor, Dealer, or any of the worldwide Crest Audio offices. For those
with Internet access, please visit the Crest Audio web site.
contact us
customer service
phone 201.909.8700 USA
fax
201.909.8744 USA
email customerserve@crestaudio.com
technical support
phone 201.909.8700 USA
fax
201.587.0550 USA
email techserve@crestaudio.com
web site
For replacement
packaging, call Crest
Audio’s Customer Service
+
mail
Crest Audio Inc.
16-00 Pollitt Drive
Fair Lawn, NJ 07410 USA
p.26
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specifications
a
LT / ST
1000
1500
2000
1kHZ, 0.5%THD+N
Stereo power 8Ω 280W
4Ω 500W
400W
750W
900W
1500W
1800W
64 rms
550W
1000W
1200W
2000W
2400W
72 rms
2Ω 650W
Bridged mono power 8Ω 1000W
4Ω 1300W
Maximum output voltage rms each channel 53 rms
Frequency response 1W @ 8Ω 20Hz–20kHz, +0 / - 1dB
20Hz–20kHz, +0 / - 1dB
20Hz–20kHz, +0 / - 1dB
400:1 @ 8Ω,
20Hz–20kHz, +0 / - 1dB
20Hz–20kHz, +0 / - 1dB
400:1 @ 8Ω,
Power bandwidth @ rated power 20Hz–20kHz, +0 / - 1dB
Damping Factor 400:1 @ 8Ω
Input cmrr 60dB @ 1 kHz
Input sensitivity for full rated output power .775V
Input impedance 20K balanced 10K unbalanced
60dB @ 1 kHz
60dB @ 1 kHz
.775V
.775V
20K balanced 10K unbalanced
20K balanced 10K unbalanced
Hum and noise -100dB, A-weighted below rated power
-100dB, A-weighted below rated power
-100dB, A-weighted below rated power
Crosstalk -55dB @ 1kHz below rated power
-55dB @ 1kHz below rated power
D
-55dB @ 1kHz below rated power
D
Class
D
Circuit breaker rating 120Vac 10A
Circuit breaker rating 230Vac 6A
15A
10A
4A
20A
12A
5A
Current draw 1/8 power, 4Ω 120Vac 3A
Current draw 1/3 power, 4Ω 120Vac 6A
8.5A
0.6A
10A
0.6A
0.6A
Current draw idle 120Vac
Thermal emissions 1/3 Power, 4Ω, BTU/HR 1240
Cooling Back to front via variable speed fan
1630
1960
Back to front via variable speed fan
Back to front via variable speed fan
Input connectors, per channel Female XLR pin 2+, stereo 1/4” TRS
Female XLR pin 2+, stereo 1/4” TRS
jack socket, 3 pin Phoenix Combicon
Female XLR pin 2+, stereo 1/4” TRS
jack socket, 3 pin Phoenix Combicon
jack socket, 3 pin Phoenix Combicon
Output connectors Speakon connectors and 5 way binding post Speakon connectors and 5 way binding post Speakon connectors and 5 way binding post
Controls Front panel: two attenuators power switch. Rear panel: signal ground-lift, mode select thermal circuit breaker (all models)
LED indicators ACL, IGM, protection
5 segment bargraph VU
ACL, IGM, protection
5 segment bargraph VU
meter, active AUTORAMP
ACL, IGM, protection
5 segment bargraph VU
meter, active AUTORAMP
meter, active AUTORAMP
TourClass protection ACL, IGM, AUTORAMP. SHORT CIRCUIT
ACL, IGM, AUTORAMP. SHORT CIRCUIT
DC VOLTAGE TURN ON/OFF TRANSIENT
ACL, IGM, AUTORAMP. SHORT CIRCUIT
DC VOLTAGE TURN ON/OFF TRANSIENT
DC VOLTAGE TURN ON/OFF TRANSIENT
CURRENT IN-RUSH, SUB / ULTRASONIC INPUT CURRENT IN-RUSH, SUB / ULTRASONIC INPUT CURRENT IN-RUSH, SUB / ULTRASONIC INPUT
Construction 16 gauge steel chassis
16 gauge steel chassis
89mm x 483 x 388mm
16 gauge steel chassis
height x width x depth
Dimensions 3.5” x 19” x 15.25”
Weight net LT 30lb
32.5lb
23lb
35lb
23lb
net ST 22.5lb
p.27
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block diagram
LT / ST owner’s manual
b
Channel A
Inputs
Channel A
Outputs
Phoenix
Combicon
5-Way
Binding Posts
Neutrik
Speakon
A
ATTENUATOR
1/4”
TRS
1
Female
3-Pin XLR
3
OUTPUT RELAY
OUTPUT STAGE
2
Channel B
Inputs
Channel B
Outputs
Phoenix
Combicon
5-Way
Binding Posts
Neutrik
Speakon
B
ATTENUATOR
1/4”
TRS
C
B
A
1
MODE SWITCH
3
Female
3-Pin XLR
OUTPUT RELAY
OUTPUT STAGE
A: STEREO
B: PARALLEL
C: BRIDGE
2
SEE SECTION 5 FOR
OUTPUT CONNECTION DETAILS
p.28
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wire gauge
c
stranded cable length
wire gauge
0.3mm2
power loss
2Ω load
8Ω load
4Ω load
2meters
2.9%
5.6%
10.8%
0.5
0.75
1.5
2.5
4.0
1.74
1.16
0.58
0.35
0.22
3.4
6.7
2.3
4.5
1.16
0.70
0.44
2.3
1.39
0.87
5meters
0.5mm2
0.75
1.5
2.5
4
4.3%
2.9
8.2%
5.6
15.5%
10.8
5.6
1.45
0.87
0.55
0.37
2.9
1.74
1.09
0.73
3.4
2.2
6
1.45
0.5mm2
0.75
1.5
2.5
4
8.24%
5.6
5.5%
10.8
5.6
28%
19.9
10.8
6.7
meters
10
2.9
1.74
1.09
0.73
2.9
1.74
1.09
4.3
6
2.9
0.75mm2
15.5%
8.2
0.73%
15.5
9.8
45%
28
meters
30
1.5
2.5
4
5.1
18.2
12.0
8.2
3.2
6.3
6
2.2
4.3
10
1.31
2.6
5.1
p.29
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c
wire gauge
LT / ST owner’s manual
stranded cable length
wire gauge
power loss
2Ω load
3.2%
8Ω load
0.81%
4Ω load
1.61%
18AWG
feet
5
16
14
12
10
0.51
0.32
0.20
0.128
1.02
0.64
0.40
0.25
2.0
1.28
0.80
0.51
18AWG
16
1.61%
1.02
0.64
0.40
0.25
3.2%
2.0
6.2%
4.0
feet
10
40
80
14
1.28
0.80
0.51
2.5
12
1.60
1.01
10
18AWG
6.2%
4.0
11.9%
7.7
22%
14.6
9.6
feet
16
14
12
10
8
2.5
5.0
1.60
1.01
0.60
3.2
6.2
2.0
4.0
1.20
2.4
18AWG
11.9%
7.7
22%
14.6
9.6
37%
26
feet
16
14
12
10
8
5.0
17.8
11.8
7.7
3.2
6.2
2.0
4.0
1.20
2.4
4.7
p.30
Download from Www.Somanuals.com. All Manuals Search And Download.
Download from Www.Somanuals.com. All Manuals Search And Download.
Download from Www.Somanuals.com. All Manuals Search And Download.
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