Instruction manual for V-4000

Instruction manual for V-4000
Professional Power Amplifiers
MONO
STEREO BRIDGE
LIMITER
POWER
LIMITER
ON
OVER HEAT
ON
PROTECT
ON
V-4000
CLIP
-5dB
-10dB
OFF
-15dB
0
10
SIGNAL
0
10
PROFESSIONAL POWER AMPLIFIER
User Instructions
This symbol is intended to alert the user to the presence of non insulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to
constitute a risk of electric shock to persons.
This symbol is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product.
CAUTION: Risk of the electrical shock - DO NOT OPEN!
CAUTION: To reduce the risk of electrical shock, do not remove cover. No user serviceable parts inside. Refer all servicing to qualified service personnel.
WARNING: To prevent electrical shock or fre hazard, do not expose this amplifier to rain or moisture. Before using this amplifier read the user manual for further warnings.
Este símbolo tiene el propósito de alertar al usuario de la presencia de “voltaje peligroso“ que no tiene aislamiento dentro de la caja del producto que puede tener
una magnitud sufciente como para constituir riesgo de corrientazo.
Este símbolo tiene el propósito de alertar al usuario de la presencia de instrucciones importantes sobre la operación y mantenimiento en la literatura que vienc con
el producto.
PRECAUCIÓN: Riesgo del choque eléctrico - NO SE ABRA
PRECAUCIÓN: Para disminuir el riesgo de choque eléctrico, no quite la cubierta. No hay piezas adentro que el usario puede reparar. Deje todo mantenimiento al los técnicos cualifcados.
ADVERTENCIA: Para prevenir choque eléctrico o riesgo de incendios, no deja expuesto a la lluvia o a la humedad este amplifcador. Antes de usar este amplifcador, lea
mas advertencias en la guia de operacion.
Ce symbole est utilisé pur indiquer à l’utilisateur la présence à l'intérieur de ce produit de tension non-isolée dangereuse pouvant être d'intensité suffsante pour
constituer un risque de choc électrique.
Ce symbole est utilisé pour indiquer à l’utilisateur qu'il trouvera d'importantes instructions importantes sur l'utilisation et l'entretien de l'appareil dans la littérature
accompagnant le produit.
ATTENTION: Risque de choc électrique - NE PAS OUVRIR!
ATTENTION: Afin de réduire le risque de choc électrique, ne pas enlever le couvercle. Il ne se trouve à l’intérieur aucune piéce pouvant être réparée par l'utilisateur. Confier
l'entretien à un personnel qualifé.
AVERTISSEMENT: Afin de prévenir les risque de décharge ou de feu, n’exposez pas cet appareil à la pluie ou à l’humidité. Avant d’utiliser cet amplificateur, lisez les avertissements supplémentaries situés dans le guide.
Dieses Symobl soll den Anwender vor unisollierten gefährlichen Spannungen innerhalb des Gehäuses warnen, die von Ausreichender Stärke sind, um einen elektrischen Schlag verursachen zu können.
Dieses Symobl soll den Benutzer auf wichtige Instruktionen in der Bedienungsanleitung aufmerksam machen, die Handhabung und Wartung des Produkts betreffen.
VORSICHT: Risiko - Elektrischer Schlag! Nicht öffnen!
VORSICHT: Um ddas Risiko eines elektrischen Schlages zu vermeiden, nicht die Abdeckung enfernen. Es befnden sich keine Teile darin, die vom Anwender repariert
werden könnten. Reparaturen nur von qualifzierte Fachpersonal durchführen lassen.
ACHTUNG: Um einen elektrischen Schlag oder Feuergefahr zu vermeiden, sollte diesen Gerät nicht dem Regen oder Feuchtigkeit ausgesetz werden. Vor Inbetriebnahme
unbedingt die Bedienungsanleitung lesen.
page 2
CAUTION
Do not open risk of electric shock
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE THE COVER.
THERE ARE NO USER SERVICEABLE PARTS
INSIDE. REFER ALL SERVICE TO YOUR
AUTHORIZED AMERICAN AMX DEALER.
The lightning flash with an arrow triangular
symbol is intended to alert the user to the
presence of non insulated “dangerous voltage” within the products enclosure, and
may be of sufficient magnitude to constitute a risk of electric shock.
The exclamation point triangular symbol is
intended to alert the user to the presence
of important operating and maintenance
(servicing) instructions in the user manual
accompanying the amplifier.
FOR OPTIMUM PERFORMANCE AND
RELIABILITY DO NOT PRESENT THE
AMPLIFIER WITH A SPEAKER LOAD
OF LESS THAN 2 OHMS OR ANY
COMBINATION OF SPEAKERS THAT
TOGETHER ARE LESS THAN 2 OHMS!
POUR ASSURER LA FIABILETE ET
OBTENIT UNE PERFORMANCE OPTIMALE,
NESOUMETTE JAMAIS L’AMPLIFICATEUR
A UNE CHARGE D’IMPEDANCE TOTALE
INFERIEURE A 2 OHMS, NI AVEC UN H.P. NI
EN COMBINAISON DES H.P.
USING ONE SPEAKER, IT MUST BE AVEC UN H.P., IL FAUT UNE CHARGE
D’IMPEDANCE MINIMUM DE 2 OHMS.
RATED AT 4 OR MORE OHMS.
USING TWO SPEAKERS, THEY MUST AVEC DEUX H.P., FAUT POUR CHAOUN UNE
RATED EACH AT 4 OR MORE OHMS.
CHARGE D’IMPEDANCE MINIMUM DE 4
USING THREE SPEAKERS, THEY OHMS.
MUST BE RATED EACH AT 8 OR
AVEC TROIS H.P., FAUT POUR CHAOUN UNE
MORE OHMS.
CHURGE D’IMPEDANCE MINIMUM DE 8
OHMS.
CONTENTS:
Safety Precautions.......................................................................................................................................................................................4
Introduction...............................................................................................................................................................................................4
Front Panel..................................................................................................................................................................................................5
Rear Panels.................................................................................................................................................................................................6
Set Up....................................................................................................................................................................................................7~12
LED Indicators.............................................................................................................................................................................................14
Specifications....................................... ...................................................................................................................................................15
page 3
Important Precautions
Introduction
• To reduce the risk of electrical shock or fire, do not expose this
unit to rain or moisture.
• Do not spill water or other liquids into or on to your unit.
• Do not attempt to operate this unit if the power cord has been
frayed or broken.
• Do not attempt to remove or break off the ground prong from
the electrical cord. This prong is used to reduce the risk of electrical shock and fire in case of an internal short.
• Disconnect main power before making any type of connection
• Do not remove the cover under any conditions. There are no
user serviceable parts inside.
• Never plug this unit in to a dimmer pack.
• Always be sure to mount this unit in an area that will allow
proper ventilation. Allow about 6” (15cm) between this device
and a wall.
• Do not attempt to operate this unit, if it becomes damaged.
• This unit is intended for indoor use only, use of this product outdoors voids all warranties.
• During long periods of non-use, disconnect the unit’s main
power.
• Always mount this unit in a safe and stable manner.
• Power cords should be routed so they are not likely to be
walked on, pinched by items placed upon or against them.
• Cleaning -The outside of the unit should be wipe down with a
soft cloth and mild cleaner when needed.
• Heat -The appliance should be situated away from heat sources
such as radiators, heat registers, stoves, or other appliances
(including amplifiers) that produce heat.
• The fixture should be serviced by qualified service personnel
when:
A. The power-supply cord or the plug has been damaged.
B. Objects have fallen on, or liquid has been spilled into the unit.
C. The appliance has been exposed to rain or water.
D. The fixture does not appear to operate normally or exhibits a
marked change in performance.
Introduction: Congratulations and thank you for purchasing
the DynaTech V-4000 amplifier. This amplifier is a representation of DynaTech's continuing commitment to produce the best and
highest quality products all at an affordable price. Please read
and understand this manual completely before attempting to
operate your new amplifier. This booklet contains important information concerning the proper and safe operation of your new
amplifier.
Unpacking:Every V-4000 amplifier has been thoroughly
tested and has been shipped in perfect operating condition.
Carefully check the shipping carton for damage that may have
occurred during shipping. If the carton appears to be damaged,
carefully inspect your unit for any damage and be sure all accessories necessary to operate the unit has arrived intact. In the
event damage has been found or parts are missing, please contact your dealer for further instructions.
Installation: This amplifier is designed to mount into a standard
19” rack. The front panel provides four holes used to screw the
unit into a rack. The unit also provides a way to rear mount the
unit into a rack for added security. Rear mounting the unit is espe cially recommended for this amplifier if the unit is to mounted into
a mobile rack.
page 4
Front Panel Control
1
2
3 4 5 6
8
MONO
9 10 11 12
STEREO BRIDGE
LIMITER
POWER
13
LIMITER
ON
ON
OVER HEAT
PROTECT
ON
V-4000
CLIP
-5dB
-10dB
OFF
-15dB
0
SIGNAL
10
0
10
PROFESSIONAL POWER AMPLIFIER
7
14
1. Power Switch - This switch is used to control the units main power.
2. Channel 1 Gain Control - This rotary knob is used to control the output signal of channel one. Turning the knob in a clockwise direction will
increase signal output.
3. Channel 1 Limiter Switch - This is used to activate the channels builtin limiter. The limiter reduces the average input level when the signal
begins to distort, this process is designed to reduce distortion and protect
the speakers. See limiter page 12.
4. Channel 1 Clip Indicator - This red LED will begin to flash when channel one begins to overload (clip). At this point channel one will begin to
distort. Under heavy clipping activity lower the channel one gain control to
reduce the risk of damage to your speakers and amplifier. This LED may
glow when the unit has been turned off, this is normal.
5. Channel 1 Protect Indicator - The red Protect LED will begin to glow
when the channel goes into protect mode. When the channel goes into
protect mode all output for that channel will turn off. This is to protect any
speakers connected to the channel.
6. Channel 1 Overheat Indicator - This indicator will begin to glow when
the channel goes into thermal protection mode. When the unit goes into
thermal protection, channel output will turn off. See  hermal Protection
page 13.
7. Channel 1 Signal Indicators - These green and yellow LEDs will glow
according to the average signal output.
8. Function Indicators - These indicators detail the operating mode of
the amplifier. These LEDs will also function as a power indicator.
9. Channel 2 Overheat Indicator - This indicator will begin to glow when
the channel goes into thermal protection mode. When the unit goes into
thermal protection, channel output will turn off. See thermal Protection
page 13.
10. Channel 2 Protect Indicator - The red Protect LED will begin to glow
when the channel goes into protect mode. When the channel goes into
protect mode all output for that channel will turn off. This is to protect any
speakers connected to the channel.
11. Channel 2 Clip Indicator - This red LED will begin to flash when
channel one begins to overload (clip). At this point channel one will begin
to distort. Under heavy clipping activity lower the channel one gain control
to reduce the risk of damage to your speakers and amplifier. This LED
may glow when the unit has been turned off, this is normal.
12. Channel 2 Limiter Switch - This is used to activate the channels
built-in limiter. The limiter reduces the average input level when the signal
begins to distort, this process is designed to reduce distortion and protect
the speakers. See limiter page 12.
13. Channel 2 Gain Control - This rotary knob is used to control the output signal of channel two. Turning the knob in a clockwise direction will
increase signal output.
14. Channel 1 Signal Indicators - These green and yellow LEDs will
glow according to the average signal output.
page 5
Rear Panel & Controls
15
17
20 22
24 26
25
16 18 19 21 23
27
15
PR
S
TO R
ES E T
ES
PUSH TO RESET
~220V 50Hz
5800 WATTS
Figure 2
28
15: Cooling Fans -
29
30 31
33
26: Channel 1 XLR THRU Jack - Use this thru jack to connect to
another amplifiers input jack.
Dual high speed cooling fans
16: Channel 2 TRS Input - Channel two 1/4 plug jack balanced or
unbalanced input jack.
27: Reset Button - This button is used to reset the breaker.
17: Channel 2 XLR Input - Channel two 3-pin XLR balanced input jack.
18: Channel 2 Subwoofer Mode On/Off Switch mode for channel two on and off.
32
Turns the subwoofer
28: Channel 2 Speakon Output - Use pins 1+ and 1- of this 4-pole
Speakon connector to connect to your speakers input jack.
29: Channel 1 Speakon Output - Use pins 1+ and 1- of this 4-pole
Speakon connector to connect to your speakers input jack.
19: Channel 2 Frequency Adj. - This pot adjust the frequency level
sent to your speaker on channel two when using your amplifier in
subwoofer mode.
20: Channel 1 XLR input - Channel one 3-pin XLR balanced input jack.
30: Channel 2 Output Jack/5 way Binding Post Connect to your
speakers input jack. Red is positive signal and Black is negative
signal.
21: Channel 1 Frequency Adj.- This pot adjust the frequency level
sent to your speaker on channel two when using your amplifier in
subwoofer mode.
31: Channel 1 Output Jack/5 way Binding Post Connect to your
speakers input jack. Red is positive signal and Black is negative
signal.
22: Channel 1 TRS Input - Channel one 1/4 plug jack balanced or
unbalanced input jack.
32: Ground Lift Switch - This switch is used to disconnect the internal
ground signal from the amplifiers chassis ground. This may reduce
the buzz that is caused from an electrical 50Hz cycle.
23: Channel 1 Subwoofer Mode On/Off Switch mode for channel one on and off.
24: Channel 2 XLR THRU Jack input jack.
Turns the subwoofer
Channel two 3-pin XLR balanced
33: AC Cord - Plug this cable into a standard 230V wall outlet.
Be sure that the supplied voltage in your area matches the
amplifiers required voltage.
25: Mode Switch - This changes the amplifier operating modes from
Mono Bridge, Parallel Mono, or Stereo.
page 6
Set Up
INPUTS
The V-4000 allows you two types of input connector per channel, a XLR jack for balanced connections and a 1/4 jack that will
accept balanced and unbalanced connections. Use these connection to connect the output signal from a mixer, cross-over or EQ to
your V-4000 amplifier. A balanced connection is recommended for cable runs longer that 20ft. When constructing your own XLR
cables follow the pin conf guration describe below for proper connections. For cable runs shorter than 20Ft. you may choose the 1/4
unbalanced input option. The 1/4 unbalanced input option may be more convenient for most users due to the abundant supply of
prefabricated cables on the market. You may use the two XLR Input Thru jacks to jump a parallel connection to another amp. For
Example: Connect a XLR cable to the input of channel one. You may now connect a XLR cable from the channel one Input Thru jack
to the input jack of another amplifers channel one input. This will reduce the use of Y cables.
Male XLR Pin Confguration:
US ITT Standard
2
Plug
Unbalanced TS 1/4
Plug
1
Figure 3
3
2.Hot(+data)
Balanced TRS 1/4
1. Ground/Return/0v)
3.Negative (- data)
Figure 4
Hot (+) Ground/Shield
Negative (-)
Figure 5
Hot (+)
Negative (-)
OUTPUTS - Binding Post:
Connect your speakers to the binding post outputs on the rear of the amp. The speaker wire may be connect by bare wire (directly
connected, usually for permanent connections), banana plug, or spade connector. Connections are made to Channels 1 and 2 outpu ts
for stereo and parallel mono modes or across the red terminals of Channels 1 and 2 for Mono Bridge Mode.
Important Notice: Although a speaker will operate with the positive and negative leads plugged into either terminal on the amplifier
binding post, be sure to plug the negative lead into the black terminal and positive lead into the red terminal. Ensuring proper polarity will
avoid your speakers being out of phase, that can cause a loss of bass response.
Bare Wire Connections: (Figure 6)
When connecting your speakers to the amplifier using bare wire; Unscrew the red and black caps on the binding post,
be sure not to completely remove or unscrew the red and black caps. Strip back the wire insulation 1/2 (13mm).
Insert the bare wire into the hole that was reveled by unscrewing the binding post cap. After inserting the wire into
the binding post hole, screw the binding post cap down on the wire. To reduce the risk of shock or damage to your
amplif er, be sure that the wire connected to one binding post does not come in contact with that of another.
Figure 6
page 7
Spade Connector: (Figure 7)
When connecting your speakers to the amplifier using spade connector; Unscrew the red and black caps on the
binding post, be sure not to completely remove or unscrew the red and black caps. Insert the spade connector in to
the binding post and tighten the caps down on the spade connector. To reduce the risk of shock or damage to your
amplifier, be sure that the wire connected to one binding post does not come in contact with that of another.
Banana Plugs:
When connecting your speakers to the amplifier using banana jacks; Be sure that the red and black caps on the
binding post are tighten down completely. Insert the banana jacks into the caps of the binding post, be sure that the
banana jack is inserted securely to avoid the risk of it popping out.
Mono Bridge Connections:
Mono bridge operation connections will follow the figure below. When operating in mono bridge operation the speaker
connections will run between the two positive (red) leads. Use channel two s red output terminal for the negative lead and
channel ones red output terminal for the positive lead. (Figure 8)
Typical Mono Bridge Connections
CH B
CH A
-
+
Figure 8
4 Ohms Minimum
page 8
Figure 7
Typical Stereo Set-Up
PR
S
TO R
ES E T
ES
PUSH TO RESET
~220V 50Hz
5800 WATTS
Figure 9
LOUDSPEAKER
LOUDSPEAKER
Stereo Connections Using the Neutrik Speakon output connectors:
Recent regulatory requirements in Europe have outlawed the use of the dual banana plug and force amp users to terminate their
speaker cables with spade lugs or bare wire ends. This is not advantageous to most users that want to reconfigure their systems
or quickly change out an amp. The Neutrik Speakon connector provides the most convenient solution to this problem, eliminating the
need for spade lugs or bare wire end cables. Major speaker manufacturers have been using Speakon connectors on their products f or
years, so chances are you are ready to use the Speakon connection. With Speakon connectors, you can connect straight from the amp
to the speaker. The Speakon connector used on this amplifier meets all known safety regulations. Once wired correctly, the connector
cannot be plugged in backwards, causing the type of inverted polarity situations that have become common with banana hookups. T his
connection will provide a safe, secure and reliable method of connecting your speakers to your new amplifier. You can purchase the
Speakon NL4FC connectors from your local audio dealer.
page 9
Speakon Assembly: You will need a pair of Neutrik Speakon NL4FC
connectors. You will also need high-quality two or four conductor speaker
cable, a pair of needle-nosed pliers and a 1.5-mm Allen key to assemble the
Speakon connectors to your speaker wire. To assemble the Neutrik Speakon
NL4FC connector, complete the following steps:
1. Strip back 3 /4-inch of the cable casing. Strip off 1 /4-inch from the end
of each of the conductors down to bare wire, and insert the brass
fittings (Figure 10).
2. Slide the wire tensioner (D) and the speakon coupler (E) through the
cable end. See f gure 11.
3. Insert each wire with the brass fittings into the top of appropriate slot
of the connector insert (B) as shown in figures 11 and 12. Use a 1.5-mm
Allen key to tighten the connection (Figure 12).
4. Be sure to properly match the positive (+) and negative (- ) leads of
each wire (Figure 13).
5. Slide the connector insert (B) into the connector housing (A), making
sure that the large notch on the outer edge of the insert lines up
with the large groove on the inside of the connector housing. The
insert should slide easily through the housing and out the other side
until it extends approximately 3 /4-inch from the end of the housing.
6. Slide the cable tensioner (D) along the cable and insert into the
housing (A), making sure that the large notch lines up with the large
groove on the inside of the connector housing (A). The cable tensioner
(D) should slide easily into the housing until only 3 /8-inch of the
tensioner (D) extends from the back end of the connector.
7. Slide the coupler (E) along the cable and screw it onto the
end of the housing (A). Before tightening, you may want to test the
connector to make sure it has been assembled properly.
Figure 10
Brass Inserts
4-Conductor Speaker Cable
Figure 11
A
B
C
D
E
Figure 12
3
Figure 13
Operating Modes
INPUT BA ANCE
SPEAKON
INPUT T U
CAUTION
1+ HOT
1 COLD
MINIMUM LOAD IMPEDANCE 2 OHM PERCHANNEL 4 OHM BRIDGE
UTPUTS
C2
+
Stereo Operation:
+1
Page 9/Figure 9 details an example of a typical stereo set-up. Connect your
inputs into channels one and two of the amplifier. Connect your speakers to
the outputs on the rear of the amplifier. Be sure that your front gain controls
are turned down to their lowest level (full counter-clockwise). Turn your amp
on. Turn your input source level up. Use your front gain controls to regulate
page 10
C1
-
-2
C2
-B ID E+
N
+
+1
+
C1
-
120 60
4800 ATTS
-2
+
-1
+2
-1
+2
the output volume. Be sure not to raise the volume to the clip level, however an intermittent clip signal is acceptable.
Mono Bridge Operation:
Page 8/Figure 8 details a mono bridge set-up. Be sure your amplifier and all other audio equipment is powered down. Flip the
Stereo/Mono/Mono Bridge switch to the Mono Bridge position. Connect an input signal to channel one. Connect your speaker acros s
the red output binding post on the rear of your amplifier. Turn your equipment on (your amplifier should always be the last item
you turn on). Apply an input source signal to your amplifier. Turn channel two gain up. Use the channel one gain to regulate your
amplifier output.
BRIDGED-MONO MODE CAUTION: The voltage across the output terminals of a bridged V-4000 amplifier may equal or exceed
100 volts RMS and may be as high as 130 volts. Use fully insulated CLASS ONE wiring, and the load must be rated for up to
2500watts (@4 ohms)
PARALLEL MONO: Parallel ties the two channel line inputs together so that they will both be driven by the same signal, without
the need for external jumpers or wiring. Both amplifier channels will operate independently. Though they carry the same signal, their
gain controls affect only their respective channels, and they both must use their respected speaker outputs. Never attempt to pa rallel the
speaker outputs, this may cause serious damage to your amplifier! This mode is recommended when using the V-4000. to run bass
speakers, to achieve better low end. To run in parallel mono mode connect your system as you would if you were going to run in stereo
mode. Then f ip the mode switch to MONO. Be sure the amp is off or the power is disconnected before making any changes.
BRIDGE SUBWOOFER: This operation allows you to get the most possible power out of your amplifier for the sole purpose of running a
high powered subwoofer loudspeaker in mono. To avoid amplifier overheating, never run the amplifier below 4 ohms in this mode. In this
mode you may use the frequency adjustment on the rear of the amp, to control the frequency output level. Frequencies may be adj usted
from 20Hz to 200Hz. Figure 14 details a typical Bridge Subwoofer set up.
STEREO SUBWOOF: This operation is similar to the Bridge Subwoofer operation but in stereo. This operation allows you to run several
subwoofers down to a minimum of 2 ohms. To avoid amplifier overheating, never run the amplifier below 2 ohms in this mode. Set
up this mode as you would a standard stereo set up. Be sure both channels are set to SUBWOOF. In this mode you may use the
frequency adjustment on the rear of the amp, to control the bass frequency output level. Frequencies may be adjusted from 20Hz to
200Hz. Figure 15 details a typical Stereo Subwoofer set up.
MONO SUBWOOF: This operation is similar to the Stereo Subwoofer operation but in mono. When running subwoofers it is usually
recommended to run them in mono mode to achieve a cleaner tighter low end. This operation allows you to run several subwoofers
down to a minimum of 2 ohms. To avoid amplifier overheating, never run the amplifier below 2 ohms in this mode. Set up this mode
as you would a standard stereo set up. Be sure both channels are set to SUBWOOF and the mode switch is set to MONO. In
this mode you may use the frequency adjustment on the rear of the amp, to control the bass frequency output level. Frequencies
may be adjusted from 20Hz to 200Hz.
ONE NORMAL/ONE SUBWOOF (BI-AMP): You may also use your amp to bi-amp your system. You may use one side of the amp
to power a subwoofer and the other side to power a full range speaker. Follow the set up guides listed above to mix and match
your operations.
page 11
Stereo Subwoofer Mode
Bridge Subwoofer Mode
Use Ch1 Inputs
Do Not Use Ch2 Inputs
Set to Bridge
Use Ch1 Inputs
Set to Subwoof
Use Ch2 Inputs
Set to Subwoof
PUSH TO RESET
ES
TO R
S
PR
PR
Set to Subwoof
~220V 50Hz
5800 WATTS
TO R
ES E T
S
ES E T
ES
PUSH TO RESET
Set to Stereo
~220V 50Hz
5800 WATTS
Figure 15
Figure 14
Negative (-) Lead
Positive (+) Lead
4 Ohms Minimum
2 Ohms Minimum
2 Ohms Minimum
PROTECTION
LIMITER:
The V-4000 comes with a built in limiter . During signal overload, the limiter will reduce the input audio signal enough to minimize
the amount of clipping. A limiter takes an overloading signal and brings it down, this reduces distortion that can cause damage to your
speakers and amplifier. During normal operation, the limiter does not affect the audio signal and is, in fact inaudible. Below clipping,
and during short clips on peaks, the limiter does not affect the audio signal. It will allow brief clipping of peaks and will only activate
when continuous,hard clipping occurs. During excessive clipping the limiter will reduce the audio signal enough to minimize the amount
of clipping. When the input signal decreases enough that clipping ends, the limiter will deactivate and cease its gain reductio n.The limiter
has a fixed threshold and can not be adjusted. When the input signal overloads, the CLIP LEDs indicate a signal overload. At this time,
page 12
the LIMITER switch on the front panel should be in the ON position or the master volume should be lowered to reduce distortion. The
limiter for either channel can be disabled independently using the slide switch on the front panel.
Output Loads:
8-Ohm Loads
The amplifier can operate at practically any power level without risk of overheating. However, if it is pushed hard enough to continually
light the CLIP indicator, the amplifier average output power can reach 700 watts, which is more than many speakers can handle.
4-Ohm Loads
If the CLIP indicator flashes occasionally, the amplifier is approaching its maximum long-term power capacity. If it is lit about half the
time, the amplifier channel will probably go into thermal protection within a few minutes.
2-Ohm Loads
Except for an occasional flash, keep the CLIP indicator dark to avoid overheating the amplifier channel. Clipping should be kept to a
reasonable minimum. An amplifier speak current draw at full output power into 2 ohms is several times what the normal draw is, but its
various protection circuits will prevent this condition lasting more than a minute or two.
SHORT CIRCUIT PROTECTION:
The V-4000 comes with built in Output Short Circuit Protection.. The Output Short Circuit Protection protects the output devices
from short circuits and stressful loads. If your speaker lines short, the amplifier automatically detect this problem and discontinues
operation for that channel. If one side of your amplifier becomes shorted and goes into protect mode, the other side will continue to
operate normally. During short circuit protection, the CLIP LED and PR OTECT LED will light simultaneously indicating amp fault.
All channel output will be interrupted (i.e. No sound output), during the SHORT CIRCUIT PROTECTION . SHORT CIRCUIT PROTECTION can usually be traced back to the signal output line (i.e. Speaker Line). Check the line from the out-put terminal to the
speaker. If this line good, check the internal speaker connections and components. A short circuit will usually be traced to a bad cable
or a bad speaker and is rarely traced to the amplifier itself.
THERMAL PROTECTION:
A pair of variable-speed high output fans provide an adequate cooling supply. During low level output the fan runs at normal speeds.
During high output and as heat raises, (exceeding 90 C.), the fan will run at high speed to aid the cooling process. But if the heatsink
temperature exceeds 91 C., the amplifier will mute until the amplifier cools down. When the amplifier cools below 90 C., the amplifier
will return to normal operations. Be sure not to operate your amplifier below the minimum load ratings to reduce the risk of overheating
problems.
INPUT/OUTPUT PROTECTION:
The input circuits are isolated by 10k resistors. An ultrasonic network decouples RF from the output and helps keep the amplifier
stable with reactive loads. MONO
SUBWOOF MODE:
page 13
The subwoofer operation can be operated in stereo, mono, or bridge mono modes. Adjust the settings by flipping the mode switch
to your desired operating mode. Set the switch to the subwoofer position, select the frequency from 20 Hz to 200 Hz via variabl e
frequency selector.
AMPLIFIER OPERATING MODE (MONO/STEREO/MONO BRIDGE):
Always configure your amplifier operating mode before beginning operation. If you want to change it during performance. You must
decrease the gain controls to their lowest levels to protect the speakers from any popping noise.
THRU:
Thru will allow the user to daisy-chain one amplifiers signal input into another amplifier. Plug the signal source outputs into the f irst
amplifiers input, patch from the amplifiers THRU jacks to the next amplifiers input, and so on, daisy-chaining as many amplifiers as
there is no excessive level loss. Is not affected by crossover setting.
GROUND LIFT SWITCH:
Applying or lifting the ground switch will change level for background noise and him, if the noise level remains the same in ei ther
position, better to keep the ground lift switch in the ground position. This will eliminate 50Hz cycle hum that is sometimes induced
when mounting several units in the same rack.
OPERATING VOLTAGE (AC MAINS):
The serial number label indicates the correct AC main voltage. Connecting to the wrong voltage is dangerous and may damage
the amplifier.
GAIN CONTROLS:
The gain controls are located on the front panel and are calibrated in 2DB of attenuation from full gain. It is best to adjust the
amplifier so no hissing is heard from speakers with no music being played, this will ensure the lowest possible distortion during
normal operation.
LED INDICATORS:
Each channel has seven LEDS. Four LEDs indicate signal level activity; two green LED and two yellow LED. One red LED indicates
signal clipping. One red LED indicates protections mode for shorts/ overload. One red LED indicating overheating situations. Bo th
channels will also share the center green LED that indicate the amplifiers operating mode.
FUNCTION INDICATORS:
3 (Three) Green LED indicators The function of Stereo, Mono, and Bridge.
OVERHEAT INDICATOR:
Two red LED s for this function, one for each channel. When the amplifiers heat sink temperature rises above 91 C., output will
be discontinue and the red overheat LED glow continuously. One channel can still operate normally if the other goes into overhe at
protection mode.
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V-SERIES AMPLIFIER SPECIFICATIONS
MODEL NO:
Output Power:
2 ohms, 1 Khz 1% THD
4 ohms, 1 Khz 1% THD
8 ohms, 1 Khz 1% THD
(Bridge Mode, mono)
4 ohms, 1 Khz 1% THD
8 ohms, 1 Khz 1% THD
V-4000
V-5000
V-7000
1400w RMS Stereo.
1200w RMS Stereo.
700w RMS Stereo.
1900w RMS Stereo.
1700w RMS Stereo.
1000w RMS Stereo.
2900w RMS Stereo.
2400w RMS Stereo.
1400w RMS Stereo.
2900w RMS
2400w RMS
3800w RMS
3400w RMS
5800w RMS
4800w RMS
Total Harmonic Distortion
20Hz-20kHz, @ rated
output power, 8 ohms
Input Sensitivity and
Impedance: @ rated
output power, 8 ohms
Dimensions & Weight:
Height x Width x Depth
Weight
Frequency Response:
+/- 1db, 1w RMS. 8 ohms
+/- 0.2 db, @ rated output,
8 ohms
Less than 0.02%
1.0v RMS (0 dBv)
1.1v RMS (0 dBv)
1v RMS (0 dBv)
5.25" (13.3cm) x 19" (48.3cm) x 15.9" (40.7cm)
61.7 lbs. (28kg)
5.25" (13.3cm) x 19" (48.3cm) x 15.9" (40.7cm)
55 lbs. (25kg)
5.25" (13.3cm) x 19" (48.3cm) x 18.2" (46.2cm)
72.8 lbs. (33kg)
10 Hz - 40 kHz
20 Hz - 20 kHz
Hum & Noise:
Below rated output,8 ohms
Power Consumption: @
rated output power, 8 ohms
Cooling System:
100 dB, unweighted
10A @ 230v
9A @ 230v
2 Dual Speed Fans and Heatsinks
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10.5A @ 230v
Sonotone Electronics
Tel:+91-22-26613499 Fax:+91-22-26614600
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