VIBRATO NS 160 User manual

Owner’s Manual

Important Safety Instructions
1. Read these instructions.
2. Keep these instructions.
3. Do not use this apparatus near water.
4. Avoid spilling any liquid,water into this apparatus , clean only with dry cloth.
5.Do not block any ventilation openings. Install in accordance with the
manufacturer’s instructions.
6.Do not install near any heat sources such as radiators, heat registers, stoves
or other apparatus that produce heat.
7. Only use voltage and AC specified with proper socket.
8. Shield the cables and cords in case of electric leakage.
9. Only use attachments and accessories specified by the manufacturer.
10. Be careful when moving this apparatus.
11. Unplug this apparatus during lightning storms or when unused for long
periods of time.
12. When this apparatus needs repair please contact the dealer. Do not open
this apparatus without authorization, or else all losses caused will be at your
own risk.
13.Ventilation should not be impeded by covering the ventilation openings with
items such as newspapers, tablecloths, curtains and so on.
14.No naked flame sources, such as candles, should be placed on the
apparatus.
15.This product must be terminated with a three-conductor AC mains power
cord that includes an earth ground connection.
Warning !
To reduce the risk of fire or electric shock, do not expose this apparatus to rain
or moisture. The apparatus shall not be exposed to dripping or splashing.

Unpack and Place
Transport/Unpack
•This apparatus is a heavyweight
machine. More than one persons are
recommended to remove the device
in case of unexpected physical hurt.
Unpack：
•Remove the top bubble shield.
Two people on both sides lift the
machine vertically and place it on a
stable platform.
•check the machine if there is any
scratch during the transport. If there
is please contact your VibratoTM
dealer at your earliest convenience.
•Find the included suitcase in the
package and make sure all the
following items are included:
1 Power amp
1 three-conductor mains cable for
NS 160, and 2 for NS 380.
If anything is missing, please contact
your VibratoTM dealer at your earliest
convenience.
Place and Ventilation
•If you want place this apparatus on
a rack, please make sure that it is
ventilated well.
•Please make sure the apparatus is
installed on a stable, level platform.
•This apparatus is suggested to
place near the other audio
components to shorten the cable as
much as possible.
•This apparatus should be placed
where is dry, ventilated without direct
sunshine exposure.
•Do not block the ventilation
openings with anything.
•Do not place the apparatus where
is hot, moist,steamed and smoggy.
•This apparatus is not water-proof.
Avoid any liquid spilling into the
machine in case of electric shock.

Power and Warranty
Power Requirements
In the factory configuration, NS
160/NS380 are fit for 50Hz/220v
alternative power. Please make sure
that the voltage shown on the power
label of the AC input connector on
the back panel is consistent with the
supply voltage before using.
If the connected AC voltage is not
consistent, it may cause danger of
fire or safety problems, and
damage to the device. If you have
any question about the voltage
requirements or the regional voltage,
please consult the local authorized
dealer before connecting to the
mains.
warning：please make sure that all
the components of your audio
system have stable connection to
earth. Please do not use the “earth
disconnector”, for it damages the
safety plug or grounding plug.
Otherwise dangerous voltage will
generate between components and
may cause damage.
Note：NS 160/NS380 are capable of
producing breathtaking sound at a high
power. But your power supply may be a
marring factor for the sound due to your
listening habits or the number of
speakers and amplifiers in you audio
system. In this case, you may install a
dedicated AC circuit. If you have
multiple AC circuits for power supply,
please consult a qualified electrician to
ensure all components operate with the
same, stable and low-impedance
earthing reference. Unplug Model One
from the AC wall outlet during a
lightning storm or when not in use for an
extended period of time.
Warning: Before moving the device,
please remove the plug from the AC
power outlet and unplug the power
cord from the back panel to ensure
that the device is powered off.
Warranty Service
•Please send the warranty card to
the following address within 15 days
after your purchase ：Room 1103,
Building 1,phase 6, Tian’an Nanhai
Cyber Park, Jianping Road,
Guicheng Street, Nanhai District,
Foshan City, Guangdong Province,
China. Zip code: 528200
•Please keep your receipt marked

with date as warranty certificate.
•Please keep the package for future
transport if your device needs
necessary maintenance.
•You have a 3-year free warranty.
Please read the warranty card for
more information.
Note: The voltage inside the machine
is beyond safety standard. And the
integrated circuit is quite complex.
Please do not open the device at
your own risk, or else you may lose
your warranty.

Front Panel
1Power SW：Press the power switch button to boot the apparatus. Press
again, the apparatus goes into stand-by mode. In stand-by mode, the circuits
and components inside need only low voltage to operate and the power
consumption and heat generated are very little.
2Indicators: The indicators will be inactive in stand-by mode, and will
remain active in operation.

Back Panel
1Pre amp input: Input the pre amp signal to this terminal via high-quality
XLR signal wire. Please notice the right and left channel with the mark R(right
channel) and the mark L(left channel).
Note: please do switch off the main power before connect /
disconnect the signal wire.
2Speaker output: connect this terminal to the speaker via high-quality
speaker cable. Please notice the “+” and ”-” polarization and the left and right
channels. The mark “+”=positive, “-”= negative, “R” = right channel, and “L” =
left channel.
Note: please mind the right polarization, and the wrong polarization
will damage the apparatus. And switch off the main power before

connect / disconnect the speaker cable.
3Power input: input AC power into the apparatus via standard power
cable.
Note: the nominal voltage of the apparatus is 220V/50Hz AC power,
please make sure your wall socket meets the specifications.
4Power Switch: “-” = switch on, “O” = switch off. When you flip the
button to “-” position, the apparatus goes into stand-by mode.
Note: the left and right power of NS380 are separate, and you have to
switch on the power on both sides to ensure both the left and right
channel operate at the same time.
5Fuse box: if the fuse is melted down, you can open the fuse box and
replace the melted fuse.
Note: Disconnect the main power before opening the fuse box.
XLR balance input plug pins
1. Earth pin
2. Signal + (positive phase)
3. Signal - (negative phase)

Connection
Please connect the apparatus according to the following procedure:
1. Use a XLR cable to connect the output of the pre-amplifier or media player
to the input of the power amplifier.
Warnings: the NS series adopt full balanced circuit design and only balanced
signal will be received. Any adapter will cause the full balanced circuit
damaged or even transistors burned out. If you convert to single-ended input
at your own risk, any damage caused to the power amp or other connected
units will be not covered by the warranty.
2. Connect the speaker cable to the loudspeakers with the right polarization
and left and right channel connection.
3. Connect the power cable to the main power socket.(220V/50Hz).
Note: Do not switch on the main power before all the components are
well connected and keep the positive and negative poles of the speaker
cable separate from each other.

Power on
If all the components are well connected, power on the device by flipping the
power switches on both sides to the “-” position. Press the switch key on the
front panel until the indicator remains on.
Power off
Please first turn down the volume of the pre amp, and press the switch key to
turn off the indicator, then power off the device.
Note: in the audio system, the “power on” procedure is source- pre amp-
power amp, while the “power off” procedure is opposite. Please do turn
down the volume first no matter in “power on” or “power off” procedure
in case of any damage to the loudspeakers.

Troubleshooting
The following faults may be caused by wrong connection or operation, please
check according to the specified procedures:
Switch failure
1. Check if the power plug is well connected to the socket or if the charge
connector gets loose.
Solution: make sure the power plug or charge connector well connected
to socket.
2. The fuse may be melted down.
Solution: unplug the power cable, and use a “一”-shaped screw diver to
open the fuse box and check if the fuse is melted. If it is melted please
check if the speaker cable “+” and “-” contact. If not replace the melted
fuse with a new fuse of the same specifications.
No sound
1. Check if the pre amp and source are operating normally.
Solution: connect another power amp to see if the pre amp and source
are operating normally.
2. Check if the signal cable and speaker cable are well connected.
Solution: unplug the signal cable and plug it again until you hear “click”
sound. Check if the power amp and loudspeaker binding posts
connecting the speaker cable are well connected.
3. Check if the loudspeakers are operating normally.
Solution: connect another power amp to check if the loudspeakers are
operating normally.
Warnings: All the checks above can be done only when the main power
is switched off.

Parameters
NS160
Output power: 100W RMS / channel@8; 160 W RMS / channel@4 ohms
Effective bandwidth: 650 kHz-3 dB (power amp)
Slew rate:85v / uSec
Damping factor:> 800@ 100Hz, 8ohms
Frequency response: 20Hz-20kHz±0.1dB；3Hz-650kHz -3dB
THD+N：<0.03% @ 1khz/20khz,100W,8ohms;
Audio input：1pair of XLR balanced terminal
Audio output：2 pairs of WBT gold-plated binding posts
Dimensions (WHD)：450x170x475mm
Weight：25kg
NS 380
Output power: 200W RMS / channel @8ohms；380W RMS/channel @4ohms
Effective bandwidth：650kHz-3dB(power amp)
Slew rate：85v /uSec
Damping factor：>800@100Hz,8Ω
Frequency response：20Hz-20kHz ±0.1dB；3Hz-650kHz -3dB
THD+N：<0.03% @ 1khz/20khz,200W,8 欧;
Audio input：1pair of XLR balanced terminal
Audio output：2 pairs of WBT gold-plated binding posts
Dimensions (WHD)：450x220x475mm
Weight：38kg