Lab systems VP300S User manual

VPVP
VPVP
VP33
33
300S00S
00S00S
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PRODUCT INFORMATION AND INSTRUCTION MANUAL
www.labsystems.com.au

The LABSYSTEMS VP300S
integrated bass amplifier with valve
preamp/mosfet power output has
been specifically developed for the
discerning bass player that requires
an extremely portable, high power
package utilising valve pre-amplifi-
cation with none of the inherent
reliability problems and high run-
ning costs generally associated with
high power full valve bass amplifi-
cation. LABSYSTEMS have achieved
this goal by combining a valve
preamplifier with our 300 watt
mosfet power amplifier module to
produce a compact package weigh-
ing in at a mere 7 kilo’s that packs
the punch and tonality of a valve
amplifier more than four times it’s
size and weight. As with all LAB-
SYSTEMS bass amplifiers, substan-
tial power is delivered even into a
8 ohm load, giving the user ad-
equate power even when only one
speaker cabinet is used.
The VP300S features inbuilt eq. pre
tuning; making it possible to
achieve a great starting sound very
easily and quickly with the front
panel equalisation controls set to
approximately the 12 o’clock posi-
tion, whilst further fine tuning or
radical changes in tone are possi-
ble by further adjustment of the eq.
controls and tone switches. Further-
more, with our unique VP valve mid
image circuitry it is possible to
achieve a harmonic warmth and
almost singing quality in your bass
sound that we believe is un avail-
able in any other amplifier on the
market. This forward effect of the
VP mid image gives the user a
sound that has the ability to cut
through the masking effect of other
loud instruments around them in a
live situation; ensuring a bass sound
that is prominent and full bodied,
with incredible definition and tone,
whilst maintaining exceptional dy-
namic range.
Many of the other bass amplifiers
currently stating that they have a
“valve preamp” are a large exag-
geration on the real truth, when in
fact all they have is a valve on the
input stage used as a pre buffer to
buffer the level off your guitar up
to a suitable level to drive the real
pre amplification and equalisation
stage, which in 99 per cent of these
amplifiers quoting “valve preamp”
is generally fully solid state. With
the LABSYSTEMS VP300S this is
definitely not the case. The equali-
sation control in the VP300S is pure
valve. Only the highest quality high
accuracy silver mica, polyester and
polycarbonate capacitors are used
to achieve a bass sound that is both
transparent and dynamically excit-
ing whilst retaining an un paralleled
warmth, richness and tonal quality.
*the effects send and d.i. outputs
are buffered by ic’s, to provide
accurate reproduction of the
preamplifier sound without further
un necessary coloration.
VP300SVP300S
VP300SVP300S
VP300S
PRODUCT INFORMATION AND INSTRUCTION MANUAL

This is used to compensate for the differing levels of output on both modern
and vintage guitars, and their varying styles of pickups and on board
electronics fitted. The trim level control should be adjusted so that the
saturation l.e.d. blinks occasionally when a note is struck firmly. It is per-
fectly ok to drive the trim level harder so the saturation l.e.d. comes on more
frequently if the want a slightly rough edge to your sound. Note the trim
level is not a volume control and must be driven to achieve correct gain
structure and tonality.
This indicates the correct drive level for the preamplifier and should be set
up as described in the trim level. It is perfectly normal to have the saturation
l.e.d. flashing occasionally.
Adjusts the amount of low frequency either cut or boosted. Increases the
amount of low frequency present, and also broadens the bandwidth giving
the bottom end a wider feel.
Adjusts the amount of lower midrange present.
Broadens the overall midrange by changing the bandwidth and band
shape. Gives the feeling of a much thicker mid spectrum. Also increases the
harmonic mid content.
Changes the centre frequency of the low mid control.
Works primarily in the upper mids and lower highs.
Works in the upper highs to create a real transparency in the overall sound.
In essence functions in a similar fashion to a presence control on a full valve
amp.
Boosts the top end for those who like it extremely bright.
Adjusts stage level only. Both D.I. output and effects send are un affected
by this control. The volume control should be turned down prior to switching
the unit either on ,off, or in or out of standby.
Mutes the outputs including the D.I. whilst leaving the heaters on in the
valves for instant start-up. Note: the red L.E.D. will illuminate when the
amplifier is in the standby mode. When the switch is in the out position the
amplifier is in standby, when pressed in the amplifier is in normal operation
mode.
Line level output to drive professional effects units. Standard mono 6.3MM
jack plugs are used. Some pedal type effects may be best used between
your guitar and the amplifier input, depending on the quality of the effect
unit.
The output of your effects unit plugs in here.
trim level
saturation l.e.d.
bass control
low mid control
mid image
mid shift
hi mid control
high control
bright
volume
standby
effects send
effects return
Labsystems VP300S front panel controls

Turns on the power to the amplifier. Light will illuminate green in rear panel
switch and green l.e.d. on front panel will illuminate when power is on. It is
advisable to have the amp in standby mode and turn down the volume
control before turning the mains power either on or off.
Use only the supplied 240 volt AC lead to plug into this socket. Damaged
power leads must not be used! If in doubt contact your LABSYSTEMS
dealer. Power supply must be 240 volt ac 50Hz +/_ 5%
Is located at the bottom of the I.E.C.power socket. Only replace with M205
4 AMP SLO BLO fuse. A spare fuse can be stored in the fuse drawer com-
partment. Ensure power is unplugged when checking or changing the fuse.
Use of fuse with incorrect rating will void your warranty
Two 6.3MM JACK connectors are provided. Sleeve is ground and Tip is
positive. Ensure your speaker leads and cabinets have the correct connec-
tions and that your leads are in good condition. Do not connect speakers
less than 4 ohms total load. Don’t forget when two 8 ohm speakers are
connected the total load impedance is halved
IE: CONNECTING TWO 8 OHM CABINETS RESULTS IN A 4 OHM LOAD.
IF IN DOUBT CONSULT YOUR LABSYSTEMS DEALER.
WARNING :
CONTINUED OPERATION INTO A SHORT CIRCUITED SPEAKER OR
SPEAKER LEAD MAY DAMAGE THE AMPLIFIER . ENSURE YOUR
LEADS ARE CORRECTLY WIRED AND IN GOOD CONDITION.
ONLY USE SPEAKERS WITH ADEQUATE POWER HANDLING.
ALWAYS ENSURE THE VENTS AND HEATSINK FINS ON THE BACK
OF THE VP300S ARE KEPT CLEAR. DO NOT COVER THE VENTS
OR HEATSINK AS THIS WILL CAUSE THE AMPLIFIER TO OVER-
HEAT AND SHUT DOWN. IT IS NORMAL FOR THE HEATSINK ON
THE REAR TO FEEL HOT TO TOUCH WHILST IN USE, ESPECIALLY
IF RUNNING AT HIGH AVERAGE LEVEL.
IF YOU WISH TO RACK MOUNT YOUR VP300S, A FAN MUST BE
FITTED TO THE REAR OF THE RACK. ENSURE ONLY THE ORIGI-
NAL LABSYSTEMS RACK MOUNT KIT IS USED. RACK MOUNTING
WITHOUT GENUINE LABSYSTEMS RACK MOUNT KIT AND/OR A
FAN FITTED TO THE RACK MAY VOID YOUR WARRANTY.
PLEASE CONSULT YOUR DEALER OR LABSYSTEMS DIRECTLY IF
YOU REQUIRE ANY ASSISTANCE. TO ORDER A RACKMOUNT KIT
FOR YOUR VP300S QUOTE VP300SRK.
POWER
SWITCH
MAINS I.E.C.
POWER INLET
SOCKET
MAINS FUSE
SPEAKER
OUTPUTS
Labsystems VP300S rear panel

Labsystems VP300S Specifications
PREAMPLIFIER SECTION: LOW NOISE 12AX7 TWIN TRIODE VALVE
EQUALISATION: 4 BAND VALVE PLUS UNIQUE MID IMAGE CIRCUITRY
D.I. OUTPUT: SOLID STATE 600 OHM FULLY BALANCED XLR CONNECTOR
POST EQUALISATION OUTPUT @ MICROPHONE LEVEL
EFFECTS LOOP: SOLID STATE MONO WITH OVER VOLTAGE PROTECTION.
6.3 MM JACK SOCKET CONNECTORS
SPEAKER OUTPUTS: 2 X 6.3MM JACK SOCKETS
MINIMUM LOAD 4 OHMS.
OUTPUT STAGE: HIGH POWER M4 MODULAR MOSFET
OUTPUT POWER: 300 WATTS INTO 4 OHM LOAD.
(SEE NOTE AT BOTTOM OF PAGE)
CHASSIS: 1.2MM POWDER COATED BHP STEEL WITH ANODISED ALLOY FRONT
SIZE: 430 wide X 300 deep x 90 high (mm)
WEIGHT: 7 kilograms (approx)
WARRANTY: TWO YEARS PARTS AND LABOUR AS DETAILED IN WARRANTY CARD.
PLEASE ENSURE YOU FILL OUT AND RETURN YOUR WARRANTY
REGISTRATION CARD TO HELP US PROVIDE YOU WITH THE BEST POSSIBLE
SERVICE.
WARNING: THE OUTPUT POWER OF THE VP300S IS CONSERVATIVELY RATED AT 300 WATTS MINIMUM.
IT SHOULD BE NOTED THAT THE PEAK POWER AVAILABLE MAY BE IN EXCESS OF 400 WATTS AND CARE
SHOULD BE TAKEN TO USE SPEAKERS WITH ADEQUATE POWER HANDLING CAPABILITY.
LABSYSTEMS WILL NOT BE RESPONSIBLE IN ANY WAY FOR DAMAGE CAUSED TO SPEAKERS NOT
SUITABLY RATED!
If you require any further assistance or advice on the operation or features of your VP300S, please contact LABSYSTEMS
Telephone
03) 9885 0888
03) 9772 9117
Fax
03) 9885 6056
Email
[email protected]
[email protected]