Warwick Pro FET IV Manual
OFFICIAL WARWICK
AMP OWNER MANUAL
ENGLISH
Congratulations on the purchase of the
new Warwick amplifier head/combo.
Please read these instructions through before
connecting and operating the device.
If you keep to the guidelines set out in this manual,
you will soon be able to appreciate the quality of
this new Warwick amplifier. Please keep this
instruction booklet handy in case you need to
consult it again.
Please send the PASSPORT to the address
indicated therein.
RECOMMENDATIONS
The following recommendations are designed to
ensure that the device always functions reliably:
Never open the casing! To do so would expose
you to the risk of an electric shock. Should repairs
prove necessary, leave them to qualified service
personnel.
Avoid dust and high moisture levels, direct
sunlight and extremely high or low temperature.
Safeguard the device from excessive vibration.
Always place the unit on a stable and horizontal
surface.
See to adequate ventilation. The device should not
be placed on soft surfaces (carpet, cushions, etc.).
When mounting it in a rack, make sure that the
rear and lateral cooling vents remain unobstructed
(amp heads), resp. that the rear cooling vents
remain unobstructed (combos).
Avoid leaving the unit near radiators or other
objects producing heat.
Internal components should only be adjusted or
cleaned by qualified service technicians.
Ensure no object or liquid penetrates the device
through its cooling vents.
When replacing a fuse make sure you fit in
one of identical value!
Have the device examined by a qualified service
technician in the following cases:
- the mains lead or mains switch have been
damaged,
- objects or liquids have penetrated the device,
- it has been exposed to excessive moisture,
- malfunctions or abnormal operating conditions
have occurred,
- the device has been dropped or the casing
damaged.
HINTS
Amps
To ensure secure rack or sleeve mounting you will
find two nuts on the bottom side of the amplifier
for additional fastening (all amp heads).
Do only operate effects pedals in-between the
instrument and the amplifier, as these devices
are not designed for the supplied load of an
effects loop.
4
- Remove the plug whenever changing a fuse.
- Only ever replace a fuse with another of the
same type. Never bridge defective fuses.
- Make sure the top and bottom of the device are
properly ventilated and that the vents are not
blocked. In the rack, leave at least 2cm free above
the unit and do not remove the feet.
- Do not subject the device to excessive vibration
or hard jolts as these could damage the valves
("tubes").
- After using the device, allow around 10 minutes
for the valves to cool down before moving it.
- At power-up, the valves (tubes) need at least 30
seconds to warm up before achieving operation
Each W-Pro unit has been conceived to match
perfectly as a system-component within this series.
Therefore best sound results can be achieved by
mutual combination of these devices.
Many combinations are possible and allow
gradual upgrading of several high-quality systems
within different performance scales and for almost
every kind of application.
readiness and a further few minutes before they
can deliver full power.
- When changing the valves, replace them only
with valves selected by Warwick, to avoid
problems like noise, microphonism and
imbalance. (special selection criteria).
- Valves can become very hot. Danger of
combustion.
- Don't undertake repairs yourself.
- Only allow the case to be opened by qualified
personnel. (Remove the plug).
- Repairs and valve changes should only be
undertaken by qualified personnel.
FRONT PANEL CONTROLS
GAIN
4
MASTER
6
8
2
4
IV
CLIP
OK
6
8
2
LOW
0
10
INPUT
LIMITER
+12
.
.
.
.
.
.
.
+12
+8
.
.
.
.
.
.
.
+8
+3
.
.
.
.
.
.
.
+3
0dB
.
.
.
.
.
.
.
0dB
-3
.
.
.
.
.
.
.
-3
-8
.
.
.
.
.
.
.
-12
.
.
.
.
.
.
.
70
140
210
420
730
1,2k
2,5k
0
EQ
ON/OFF
Pro Fet IV
MID
B/C
HIGH
B/C
DI PRE/
POST
TONE
DI OUT
MUTE
PHONES
10
POWER
-8
-12
5k
INPUT socket to plug in a bass guitar.
GAIN control + 3 LEDs to adjust the input level:
CLIP
too high,
OK
optimum,
LOW
too low.
LIMITER 3-way switch + 2-colored LED to
compress the signal within the preamp:
LED green
Limiter on,
LED red
the signal level is actually
being reduced.
switch in top position on,
centered
off,
bottom position on, when graphic EQ is on.
70/140/210/420/7301.2k/2.5k/5k faders for
boosting/cutting the respective frequencies by +/12 dB.
EQ
ON/OFF
switch
+
LED
for
activating/bypassing the graphic EQ (and possibly
the limiter).
LOW B/C 3-way switch + 2-colored LED to
boost/cut low frequencies. In boost position
(LED red) the bottom-end is boosted, in cut
position (LED yellow) it remains unmodified, but
deep mids are attenuated to obtain a clearer
sound (chords, tapping, harmonics, etc.).
MID B/C 3-way switch + 2-colored LED for the
boost (LED red)/cut (LED yellow) of the
frequency determined via TONE control. It will
LOW
HIGH
be slightly boosted when the switch is centered. All
boosts and attenuations are less intense in deeper
frequency ranges than in higher spectra (300 Hz
+6/+12 dB, 14 kHz +15/+20 dB, flat/boost).
HIGH B/C 3-way switch + 2-colored LED to
boost/cut high sound attributes. In boost position
treble is boosted (fixed preset, LED red), in cut
position (LED yellow) the TONE control works as
a low-pass-filter, means that frequencies higher
than the TONE control setting are eliminated.
Moreover the MID-boosts are softened by about
5 dB.
TONE control sets the basic sound characteristics
(frequency control between 300 Hz and 14 kHz).
DI PRE/POST switches the signal lying at the DI
OUT socket PRE (switch in top position) the
unmodified bass signal is retained, POST (switch
in bottom position) the tone controls and the
effects loop are inserted into the signal path.
DI OUT symmetrical output for supplying a stage
or studio mixing console.
PHONES socket for connecting a headphone
(min 200 Ω).
MUTE switch + LED cuts the signal from all
outputs, except from the PHONES socket, and
activates the TUNER output (rear panel).
MASTER control determines the mains level.
POWER switch for turning the amplifier on and
off.
TONE CONTROLS
As the functioning of the MID B/C, HIGH B/C
switches and the TONE control is very complex,
some remarks regarding this novel control stage
will be shown in the following. The frequency
fixed with the TONE control can be further
boosted via the MID B/C switch (in center
position it will be slightly boosted), or cut similarly to a semi-parametric equalizer.
12
LOW
B/C
Boosts and attenuations are less intense in deeper
frequency ranges than in higher spectra. These
have been determined so as to obtain efficient
results by quick adjustment.
The switch position HIGH cut makes the TONE
control act like a low-pass filter. You can therefore
cut treble that your bass does not produce anyway,
so as to eliminate unnecessary noise.
Moreover you can simulate different pickup
characteristics:
Each pickup has a peak in its resonance frequency
in excess of which no treble can be transmitted.
The main distinction in sound characteristics
between different pickups is that this frequency is
located elsewhere depending on pickup types. This
is what you can obtain in combination of MID
boost and HIGH cut by shifting the simulated
resonance frequency with the TONE control (12
o'clock until full clockwise position). However it
requires that the resonance frequency of your bass
pickups lies beyond that of the desired simulation.
Furthermore you can pre-adjust the desired basic
sound characteristics with the TONE control, and
use the LOW B/C, MID B/C, HIGH B/C and
EQ ON/OFF switches as preset switches.
You can also take advantage of the option to add
the limiter automatically only when the graphic
EQ is activated.
GROUND
LIFT
TUNER
LINE OUT
EFF. SEND
EFF. RET.
EQ ON/OFF
FOOTSWITCH
SERIAL NO.
WARNING:
High Voltage inside. To prevent electric shock do not
open cover. Refer servicing to
qualified service personnel. To
avoid fire hazard, replace fuse
with same type and rating. To
avoid electric shock hazard, do
not operate this equipment in
rain or wet environment.
MAI N S I N
TYPE: WARWICK PRO FET IV
WARWICK AMPLIFICATION GERMANY
SPEAKER OUT 400W/4 OHMS
MAINS IN AC Terminal with integrated fuse
compartment for connecting the amplifier to the
current network.
GROUND LIFT switch isolates the earth
connection from the ground of signal. Should
several devices be simultaneously connected to
earth by the same conductor as well as via line
connections, a so called hum loop might appear. In
this case operate GROUND LIFT to eliminate the
current hum (when pressed).
TUNER OUT socket for the connection of a tuner.
When MUTE mode is activated, the unmodified
bass signal is retained here.
Pro Fet IV
REAR PANEL
LINE OUT socket allows to connect additional
power amplifiers or active speakers.
EFF. LOOP for the insertion of effects units.
Connect SEND with the input and RETURN with
the output of the effects device.
EQ ON/OFF FOOTSWITCH allows to connect
a footswitch for activating/bypassing the graphic
EQ. To do so use a switch (latch) and not a key
(unlatch).
SPEAKER OUT for supplying loudspeaker
cabinets. One XLR and one Speakon socket are
provided. Both are connected in parallel. The
signal from the Speakon outputs is leaded by 1+
and 1-.
13
Sonic II / III
Pro Fet III
Pro Fet IV
Pro Tube IV
Pro Tube IX
Quad IV / VI
25 mV
25 mV
25 mV
25 mV
25 mV
25 mV
transistor,
controlled
active
active
transistor,
controlled
active transistor,
controlled
active
transistor,
controlled
active
all tube
dual tube
none
fan cooled (non fan cooled (non
permanent)
permanent)
fan cooled (non
permanent)
fan
cooled
(temperature
controlled)
3-way switches for
low boost/flat/cut
mid boost/flat/cut
high boost/flat/cut
param.freq.contr.,
8-band graph. EQ
+/-12
dB,
dyn.contr.
with
switchable
limiter (3-way)
3-way switches for
low boost/flat/cut
mid boost/flat/cut
high boost/flat/cut
param.freq.contr.
contour switch,
dyn. control with
2nd tube and
crunch control.
3-way switches for
low boost /flat/cut
mid boost/flat/cut
high boost /flat
/cut param.
freq.contr.,contour
switch,
dyn. control with
2nd tube and
crunch control.
none
none
8-band graph. EQ,
+/- 12dB, switches
for low boost and
high boost.
Dyn. control with
switchable limiter
10-band graph.
EQ, +/- 12dB,
switches for low
boost and high
boost. Dyn.
control with
switchable limiter
none
200 Ω
200 Ω
200 Ω, stereo
200 Ω, stereo
200 Ω, stereo
0 dB, 600 Ω
0 dB, 600 Ω
2x0 dB, 600 Ω,
stereo or 2x mono
2x0 dB, 600 Ω,
stereo or 2x mono
0 dB, 600 Ω
mono serial
send 0 dBu, 600 Ω
return 0 dBu, 10 kΩ
mono serial
send 0 dBu, 600 Ω
return 0 dBu, 10 kΩ
stereo serial
mono serial
send 0 dBu, 600 Ω send 0 dBu, 600 Ω
return 0 dBu, 10 kΩ return 2x0dBu,
10kΩ
mono serial
send 0 dBu, 600
Ω r e t u r n
0dBu,10kΩ
stereo parallel,
send fullrange or
200 Hz low cut,
same values
mono parallel
send 0 dBu, 600 Ω
return 0 dBu, 10 kΩ
DI pre/post
ground lift,
DI pre/post
ground lift,
DI pre/post
ground lift,
DI pre/post
ground lift,
DI pre/post,
stereo, biamp, low
cut
ground lift,
DI pre/post
none
none
none
none
X-over,
2x balance
Effects mix
none
none
graph. EQ on
CH 1/2
CH 1/2
none
II: 200 W/4Ω
III: 300 W/4Ω
250 W/4Ω jack
XLR & Speakon
400 W/4Ω jack
400 W/4Ω jack
XLR & Speakon XLR & Speakon
2x450 W/4Ω jack
XLR & Speakon
IV: 400 W/4Ω
VI: 600 W/4Ω
<0.1%
<0.1%
<0.1%
<0.1%
<0.1%
<0.1%
II: 8,3 ; III: 10,7
11,5
12,5
15,0
22,3
IV: 15,0 ; VI: 16,5
500x90x285
19“/483x90x375
19“/483x90x375 19“/483x90x430
19“/483x135x455
483x90x430
none
none
none
fan cooled (non
permanent)
fan cooled (non
permanent)
bass, mid low, mid
high,
treble
controls, low boost
and high boost
switches
bass,
punch,
param. mids with
freq. and level
controls, attack,
treble, low boost
and high
boost switches.
Dyn. control with
switchable limiter
none
200 Ω
Amps
30
transistor,
controlled
dual tube
Quadrumatrix
bass, mid 1 (+shift),
mid 2 (+shift),
treble, low boost
and high boost
switches
Pro Fet IV
CIRCUIT DIAGRAM
37
Headquarters:
Warwick GmbH&Co.Music Equipment KG•Gewerbegebiet Wohlhausen•08258 Markneukirchen/Germany•Tel 0049-(0)37422-555-0
Fax 0049-(0)37422-555-99 • Send us an E-Mail to: [email protected] • Visit us on the World Wide Web: http://www.warwick.de
Branch China:
Warwick Music Equipment (Shanghai) Ltd., Co.Shanghai Waigaoqiao Free Trade Zone • Shanghai 200131 / P.R.China
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