User’s Guide
VTX350H
Three-Channel Guitar Amplifier
with Advanced Digital Signal
Processing
TABLE OF CONTENTS:
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4,5
The Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
The DSP Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Storing Your Own Presets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Restoring the Factory Presets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
More About The Save/Tap Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Using the Footswitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
DSP Factory Presets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10,11
Suggested Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12,13
DSP “Fill in the Blanks” (for User Presets) . . . . . . . . . . . . . . . . . . . . .14
System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . .back cover
VTX350H
Three-Channel Guitar Amplifier with Advanced DSP
Declaration of Conformity
Manufacturer’s Name: SLM Electronics
Corporate Headquarters: 1901 Congressional Drive, St. Louis, Missouri 63146
Primary Production Facility: 700 Hwy 202 W, Yellville, Arkansas, 72687
Product Type: Audio Amplifier
Products meet the regulations for compliance marking under:
ETL standards UL6500, UL60065, or UL813
CSA standards E60065 or C22.2 No.1-M90
CE safety standard EN60065
CE EMC standards EN55103 or EN55013 and EN61000
C-tick designation Level 2, ABN #56748810738, ARBN# N222
KETI standard K60065 (limited model approval)
Compliance Support Contact: SLM Electronics, Attn: R&D Compliance Engineer
1901 Congressional Drive, St Louis, Missouri, 63146 • Tel.: 314-569-0141, Fax: 314-569-0175
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications to this device not expressly approved by SLM Electronics could void the user’s
authority to operate the equipment under FCC rules.
3
Congratulations!
You are now the proud owner of the Crate VTX350H three-channel guitar amplifier
with Advanced Digital Signal Processing. This rugged amplifier combines outstanding
features with serious clean and distorted sounds. Dual DSP controls provide 15 modulation effects and 15 delay effects which can be combined for a wide variety of sounds.
The Tap/Save button allows you to manually set the tempo of many of the effects and
to save new DSP presets in the amplifier’s non-volatile memory. A separate Reverb
control adds even more to the array of effects.
A highly visible electronic tuner (with a Mute switch for silent tuning) allows you to
get tuned and stay in tune any time the amplifier is on. The rear panel Line In and Line
Out jacks allow you to connect additional equipment for even greater flexibility.
Channel switching, Tap/Save, and a second bank of DSP effects may be controlled
by means of the supplied four button footswitch.
Like all Crate products, your VTX350H amplifier is designed by musicians, and built
using only the best components. Extensive testing confirms that this amplifier is the
absolute best it can be.
In order to get the most out of your new amplifier, we strongly suggest that you read
the information contained in this guide before you begin playing.
And thank you for choosing Crate.
VTX350H
Three-Channel Guitar Amplifier with Advanced DSP
IMPORTANT SAFETY INSTRUCTIONS
• READ, FOLLOW, HEED, AND KEEP ALL INSTRUCTIONS AND WARNINGS.
• DO NOT OPERATE NEAR ANY HEAT SOURCE AND DO NOT BLOCK ANY VENTILATION OPENINGS ON THIS APPARATUS. FOR PROPER OPERATION,
THIS UNIT REQUIRES 3” (75mm) OF WELL VENTILATED SPACE AROUND HEATSINKS AND OTHER AIR FLOW PROVISIONS IN THE CABINET.
• DO NOT USE THIS APPARATUS NEAR SPLASHING, FALLING, SPRAYING, OR STANDING LIQUIDS.
• CLEAN ONLY WITH LINT-FREE DAMP CLOTH AND DO NOT USE CLEANING AGENTS.
• ONLY CONNECT POWER CORD TO A POLARIZED, SAFETY GROUNDED OUTLET WIRED TO CURRENT ELECTRICAL CODES AND COMPATIBLE WITH
VOLTAGE, POWER, AND FREQUENCY REQUIREMENTS STATED ON THE REAR PANEL OF THE APPARATUS.
• PROTECT THE POWER CORD FROM DAMAGE DUE TO BEING WALKED ON, PINCHED, OR STRAINED.
• UNPLUG THE APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG PERIODS OF TIME.
• ONLY USE ATTACHMENTS, ACCESSORIES, STANDS, OR BRACKETS SPECIFIED BY THE MANUFACTURER FOR SAFE OPERA-
TION AND TO AVOID INJURY.
• WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK OR FIRE, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.
• SERVICE MUST BE PERFORMED BY QUALIFIED PERSONNEL.
• OUR AMPLIFIERS ARE CAPABLE OF PRODUCING HIGH SOUND PRESSURE LEVELS. CONTINUED EXPOSURE TO HIGH SOUND PRESSURE LEVELS
CAN CAUSE PERMANENT HEARING IMPAIRMENT OR LOSS. USER CAUTION IS ADVISED AND EAR PROTECTION IS RECOMMENDED IF UNIT IS
OPERATED AT HIGH VOLUME.
• WARNING: THIS UNIT REQUIRES A SAFETY GROUNDED OUTLET WIRED TO CURRENT ELECTRIC CODES HAVING THE LINE SUPPLY VOLTAGE,
POWER, AND FREQUENCY IDENTIFIED ON THE REAR OF THE UNIT. THE OUTLET MUST REMAIN ACCESSIBLE TO DISCONNECT THE UNIT IF A
FAULT SHOULD ARISE WHILE IN USE. THIS UNIT SHOULD BE UNPLUGGED WHEN NOT IN USE.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE. TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT
REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
"IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL"
“ES NECESARIO QUE EL USUARIO SE REFIERA AL MANUAL DE INSTRUCCIONES.”
"REFERREZ-VOUS AU MANUAL D'UTILISATION"
EXPLANATION OF GRAPHICAL SYMBOLS:
EXPLICACION DE SIMBOLOS GRAFICOS:
EXPLICATION DES SYMBÔLES GRAPHIQUES:
"DANGEROUS VOLTAGE"
“VOLTAJE PELIGROSO”
"DANGER HAUTE TENSION"
=
=
PRECAUCION
RIESGO DE CORRIENTAZO
NO ABRA
PRECAUCION: PARA REDUCIR EL RIESGO DE INCENDIOS O DESCARGAS
ELECTRICAS, NO PERMITA QUE ESTE APARATO QUEDE EXPUESTO A LA
LLUVIA O LA HUMEDAD. PARA DISMINUOIR EL RIESGO DE CORRIENTAZO.
NO ABRA LA CUBIERTA. NO HAY PIEZAS ADENTRO QUE EL USARIO PUEDO
REPARAR DEJE TODO MANTENIMIENTO A LOS TECHNICOS CALIFICADOS.
ATTENTION
RISQUE D'ELECTROCUTION
NE PAS OUVRIR
ATTENTION: PROTÉGEZ CET APPAREIL DE LA PLUIE ET DE L'HUMIDITÉ
AFIN D'ÉVITER TOUT RISQUE D'INCENDIE OU D'ÉLECTROCUTION. POUR
REDUIRE D'ELECTROCUTION NE PAS ENLEVER LE COUVERCLE. AUCUNE
PIECE INTERNE N'EST REPRABLE PAR L'UTILISATEUR. POUR TOUTE
REPARATION, S'ADRESSER A UN TECHNICIEN QUALIFIE.
4
The Front Panel:
1 872 10 11 12 14133 5 64 9
1. POWER: Use this switch to turn the amplifier on (top of the switch depressed) and off (bottom
of the switch depressed). The switch illuminates when the power is on.
2. REVERB: Use this control to adjust the amount of digital reverb effect. In its fully counterclockwise position the signal will be “dry” (without any reverb). As you rotate the control clockwise the
amount of reverb increases.
3. TAP/SAVE (LED): This LED flashes in time with the tempo set by the Tap/Save button (#4), and
serves as a status indicator for certain DSP activities (see page 8).
NOTE: For some of the DSP effects, the Save/Tap LED remains illuminated. The Save/Tap LED does
not illuminate when the DSP knobs are set to the Bypass position.
4. TAP/SAVE: Use this pushbutton to set the tempo of many of the effects by tapping the button
repeatedly in time with the desired tempo. The Tap/Save button is also used to save DSP presets
and to restore the factory default DSP settings. Additional information about the Tap/Save button
is on pages 7 and 8.
5. DELAY: Use this control to select one of the fifteen digital delay effects. Complete information
about the DSP effects is on page 7.
6. EFFECTS: Use this control to select one of the fifteen digital modulation effects. Complete
information about the DSP effects is on page 7.
7. (ELETRONIC TUNER): The electronic tuner is active whenever the amplifier is turned on, providing constant, “real-time” tuning. The bottom row of LEDs indicate which note (string) is being
tuned. The top row of LEDs provides directional queues to facilitate quick and precise tuning of
your instrument. The indicated note (string) is properly tuned when only the center LED is illuminated.
8. MUTE: This switch, when depressed, mutes the output signals at the Speaker jacks (#30) and
the Line out jack (#28), allowing you to silently tune or switch instruments. The adjacent yellow
LED illuminates when the Mute function is active.
9. 3 (CH 3 SELECT): This switch, when depressed, selects Channel 3 as the active channel. The
adjacent red LED illuminates when Channel 3 is active. Channel 3 features a high gain FlexWave
circuit for extreme distortion and sustain.
VTX350H
Three-Channel Guitar Amplifier with Advanced DSP
5
10. HIGH: Use this control to adjust the high frequency level of Channel 3.
11. LEVEL: Use this control to adjust the output level of Channel 3.
12. MID: Use this control to adjust the midrange frequency level of Channel 3.
13. GAIN: Use this control to adjust the amount of distortion produced by Channel 3.
14. LOW: Use this control to adjust the low frequency level of Channel 3.
15. 2 (CH 2 SELECT): This switch, when depressed, selects Channel 2 as the active channel.
The adjacent yellow LED illuminates when Channel 2 is active. Channel 2 features a medium
gain FlexWave circuit for moderate distortion and “crunch.”
16. HIGH: Use this control to adjust the high frequency level of Channel 2.
17. LEVEL: Use this control to adjust the output level of Channel 2.
18. MID: Use this control to adjust the midrange frequency level of Channel 2.
19. GAIN: Use this control to adjust the amount of distortion produced by Channel 2.
20. LOW: Use this control to adjust the low frequency level of Channel 2.
21. 1 (CH 1 SELECT): This switch, when depressed, selects Channel 1 as the active channel.
The adjacent green LED illuminates when Channel 1 is active. Channel 1 features a low gain
FlexWave circuit for clean sounds or sounds with mild distortion.
22. HIGH: Use this control to adjust the high frequency level of Channel 1.
23. LEVEL: Use this control to adjust the output level of Channel 1.
24. MID: Use this control to adjust the midrange frequency level of Channel 1.
25. GAIN: Use this control to adjust the amount of distortion produced by Channel 1.
26. LOW: Use this control to adjust the low frequency level of Channel 1.
27. (INPUT): Use this jack to connect your guitar to the amplifier by means of a shielded instru-
ment cable.
VTX350H
Three-Channel Guitar Amplifier with Advanced DSP
16 17 18 201915 22 2723 24 262521
6
The Rear Panel:
28. LINE OUT: When using an external effects processor, connect this jack to the input of the effect by means of
a shielded signal cable. This jack also doubles as a source for a post-EQ preamp signal to send to a mixing board,
recorder, powered monitor or external amplifier.
29. LINE IN: When using an external effects processor, connect this jack to the output of the effect by means of a
shielded signal cable. This jack also doubles as a direct connection to the power amp, bypassing the input and preamp stages. This is useful for “slaving” a pair of amplifiers together.
30. SPEAKERS: Use these jacks to connect the amplifier to your speaker(s) by means of speaker cables with
mono 1/4” plugs. These jacks are wired in parallel. Make sure that the combined impedance of your speakers is
equal to or greater than 2 ohms! Use the chart below to help determine parallel loads. If in doubt, ask your dealer.
31. FOOTSWITCH: Use this jack to connect the footswitch cable (5-conductor midi cable) to the four button
footswitch (supplied). This allows you to remotely switch between the channels, set tap tempos, save new presets,
and access a second set of DSP presets. (See page 9 for additional information.)
32. FUSE: The fuse protects the amplifier from damages caused by a faulty AC power source and/or other problems. If the fuse opens, replace it ONLY with the same size and type. If fuses continue to fail, check the AC source
– if the source is okay, contact your Crate dealer for service information.
33. AC LINE CORD (not shown): This grounded power cord is to be plugged into a grounded power outlet, wired
to current electrical codes and compatible with the voltage, power, and frequency requirements stated on the rear
panel. Do not attempt to defeat the safety ground connection.
VTX350H
Three-Channel Guitar Amplifier with Advanced DSP
CAB IMP # CABS TOTAL IMP CAB IMP # CABS TOTAL IMP
4 ohms 2 2 ohms 16 ohms 2 8 ohms
8 ohms 2 4 ohms 16 ohms 4 4 ohms
8 ohms 4 2 ohms 16 ohms 8 2 ohms
WARNING: The speaker output of this unit can
exceed 10 Watts and could be a shock injury.
Connection to speakers should be performed by a
skilled person in compliance with local building
codes. Class 2 wiring is required for speaker
cables. Use of external speakers outside the rat-
ings stated at the speaker jack may result in a
shock injury or damage to the unit.
28 29 30 31 32
7
The DSP Section:
The VTX350H features DSP controls
for Reverb, Delay and Effects. Complete
information about the modulated and
delay effects is given below. The Delay
control selects the delay or echo effects.
All of these effects have their speed controlled by the Tap/Save button. The Effects control selects the “pitch modified” and wah effects. Many of these effects have their speed
controlled by the Tap/Save button. Additional information is provided on pages 5 and 10.
DELAY:
NAME DESCRIPTION SAVE/TAP BUTTON CONTROLS:
Single 1 Single delay w/low level time: .05–1 second
Single 2 Single delay w/medium level time: .05–1 second
Single 3 Single delay w/high level time: .05–1 second
Single 4 Single delay w/maximum level time: .05–1 second
Echo 1 Echo w/low level time: .05–1 second
Echo 2 Echo w/medium level time: .05–1 second
Echo 3 Echo w/high level time: .05–1 second
Echo 4 Echo w/maximum level time: .05–1 second
Tape 1 Tape echo w/low level time: .05–1 second
Tape 2 Tape echo w/medium level time: .05–1 second
Tape 3 Tape echo w/high level time: .05–1 second
Tape 4 Tape echo w/maximum level time: .05–1 second
Effects 1 Echo w/low level, before effect time: .05–1 second
Effects 2 Echo w/medium level, before effect time: .05–1 second
Effects 3 Echo w/high level, before effect time: .05–1 second
Ø Bypass - no effect n/a
EFFECTS:
NAME DESCRIPTION SAVE/TAP BUTTON CONTROLS:
Chorus 1 Chorus w/low depth speed: 1 cycle/tap - tap period: .05–1 second
Chorus 2 Chorus w/medium depth speed: 1 cycle/tap - tap period: .05–1 second
Chorus 3 Chorus w/high depth speed: 1 cycle/tap - tap period: .05–1 second
Flange 1 Flanger w/low depth speed: 4 cycle/tap - tap period: .05–1 second
Flange 2 Flanger w/medium depth speed: 4 cycle/tap - tap period: .05–1 second
Flange 3 Flanger w/high depth speed: 4 cycle/tap - tap period: .05–1 second
Phaser 1 Phaser w/low feedback speed: 2 cycle/tap - tap period: .05–1 second
Phaser 2 Phaser w/medium feedback speed: 2 cycle/tap - tap period: .05–1 second
Phaser 3 Phaser w/high feedback speed: 2 cycle/tap - tap period: .05–1 second
Vibrato 1 Vibrato w/low depth speed: 1 cycle/tap - tap period: .05–1 second
Vibrato 2 Vibrato w/medium depth speed: 1 cycle/tap - tap period: .05–1 second
Vibrato 3 Vibrato w/high depth speed: 1 cycle/tap - tap period: .05–1 second
Oct Adds signal one octave lower n/a
Wah Touch-sensitive wah-wah n/a
R-Wah Inverted wah-wah n/a
Ø Bypass - no effect n/a
VTX350H
Three-Channel Guitar Amplifier with Advanced DSP
SIGNAL PATH FOR DELAY "EFFECTS 1, 2 & 3"
DELAY EFFECTS
SIGNAL PATH FOR ALL OTHER EFFECTS
COMBINATIONS
EFFECTS DELAY
8
Storing
Your Own Presets:
Each channel of the VTX350H has two factory assigned Effects presets, as shown on
pages 10 and 11. No matter what the settings of the Reverb, Delay and Effects controls,
the DSP and reverb presets are recalled when a channel is selected. You may change
the DSP and reverb settings by rotating the Reverb, Delay and Effects controls - these
changes will remain active until a different channel is selected, but will not be there for
later use unless they are saved. To save a new preset to a channel, first make the
desired changes. Then press and hold the Tap/Save button for about three seconds. The
Tap/Save LED will flash through three quick sequences, indicating the preset was saved.
The new preset is stored for that channel and will remain in memory until a new preset is
stored for that channel or the factory presets are restored.
(We recommend making copies of page 14 of this guide for the purpose of writing down your own presets.)
Restoring the Factory Presets:
The factory assigned presets may be restored, erasing any changes you have made.
Turn the amplifier off. Press and hold the Tap/Save button as you turn the amplifier on.
The Tap/Save LED will flash through two quick sequences, indicating the factory presets
have been restored.
More About the Tap/Save Button:
The Tap/Save button is used to set the tempo of an effect simply by tapping on it in
time to the desired tempo – the time between the two taps sets the timing of the effect.
(If the tempo entered is greater than one tap per second, the tempo will default to one
second, which is the maximum tap-tempo time period.)
The Delay and the Effects may each have a different tap speed. The default “target”
for the Tap/Save button is the Delay control. To select the Effects control as the tap button’s target, rotate the Effects control. The Tap/Save tempo function will automatically
revert back to the Delay control 16 seconds after the Effects control is rotated, or when
the tap speed was last changed for the effect. (If the Delay control is set to Bypass, the
Tap/Save function will not revert to Delay.)
NOTE: In most cases, it is usually more pleasing to the ear to set a slower tap speed for the high level
effects and a faster tap speed for the low level effects - see page 7.
VTX350H
Three-Channel Guitar Amplifier with Advanced DSP
3 SECONDS
CHANGES ARE
SAVED AS
NEW PRESET
9
Using the Footswitch:
The special Crate four button footswitch supplied with the VTX350H performs a variety of functions. The footswitch allows remote channel selection, remote Tap/Save for
each channel, and allows access to an additional DSP preset for each channel of the
amplifier. Use only the supplied Crate four button footswitch with the VTX350H. A standard 5-wire midi cable (supplied) may be used to connect the footswitch to the amplifier.
S
:
C
;
S
:
C
;
S
#3:
C
;
S
:
A
VTX350H
Three-Channel Guitar Amplifier with Advanced DSP
NOTE: DSP Bank “B” presets are only accessible
when the footswitch is
connected to the amplifier.
When the footswitch is not
connected, only DSP Bank
“A” is accessible.
When the footswitch is connected
to the amplifier, the first tap of buttons 1 - 3 select the corresponding
channel. Once a channel is selected,
consequent taps of the same buttons
produce the same results as tapping
the front panel Tap/Save button –
you can use the footswitch to store
presets and set the tempo of an
effect. (See page 8.)
The “original” DSP presets are
active for each channel when the #4
footswitch LED is illuminated. These
are referred to as “DSP Bank ‘A’.”
When the #4 button is switched and
the LED is off, a second DSP preset
may be stored and recalled for each
channel - “DSP Bank ‘B’.”
VTX350H REAR PANEL
5-Conductor
MIDI cable
FOOTSWITCH
TAP/SAVE FOR CH. 1
1
WITCH #1
H. 1 SELECT
2
WITCH #2
H. 2 SELECT
TAP/SAVE FOR CH. 2
3
WITCH
H. 3 SELECT
TAP/SAVE FOR CH. 3
4
WITCH #4
LED on: DSP BANK
LED off: DSP BANK B
10
DSP
Factory Presets:
The VTX350H Factory Presets for the DSP section are as follows:
VTX350H
Three-Channel Guitar Amplifier with Advanced DSP
Factory Preset 1: Clean w/Chorus, Delay, Reverb
CHANNEL: 12BANK:
3
"A"
"B"
TAP Tempo MEDIUM
Factory Preset 2: Rhythm w/Slapback Delay
CHANNEL: 1
BANK:
2
3
"A"
"B"
TAP Tempo FAST
Factory Preset 3: Solo w/Flange, Delay, Reverb
TAP Tempo MEDIUM
TAP Tempo N/A
CHANNEL: 12BANK:
3
"A"
"B"
TAP Tempo MEDIUM
TAP Tempo MEDIUM
11
DSP
Factory Presets:
The VTX350H Factory Presets for the DSP section are as follows:
VTX350H
Three-Channel Guitar Amplifier with Advanced DSP
Factory Preset 4: Clean w/Reverb
CHANNEL: 12BANK:
3
"A"
"B"
Factory Preset 5: Rhythm w/Reverb
CHANNEL: 1
BANK:
2
3
"A"
"B"
Factory Preset 6: Solo w/Reverb
TAP Tempo MEDIUM
TAP Tempo FAST
TAP Tempo MEDIUM
TAP Tempo N/A
CHANNEL: 12BANK:
3
"A"
"B"
TAP Tempo MEDIUM
TAP Tempo MEDIUM
12
Suggested Settings:
"Oceanic"
Clean with
Vibrato, Delay,
& Reverb
TAP Tempo MEDIUM
TAP Tempo MEDIUM
"Super Funk"
Clean with
Wah, Delay,
& Reverb
TAP Tempo FAST
TAP Tempo N/A
"Arena"
Rhythm with
Reverb
& Delay
TAP Tempo MEDIUM
TAP Tempo N/A
"Haze Faze"
Rhythm with
Phase
& Reverb
TAP Tempo N/A
TAP Tempo MEDIUM
"Solo Wah"
Solo with
Wah, Delay
& Reverb
TAP Tempo N/A TAP Tempo N/A
"Octanator
Solo with
Octave
& Reverb
TAP Tempo N/A TAP Tempo N/A
VTX350H
Three-Channel Guitar Amplifier with Advanced DSP
13
Suggested Settings:
VTX350H
Three-Channel Guitar Amplifier with Advanced DSP
14
DSP
“Fill in the Blanks” (User Settings):
_
_
_
Copy this page to fill in your own DSP Presets!
VTX350H
Three-Channel Guitar Amplifier with Advanced DSP
User Preset:
CHANNEL: 12BANK:
3
User Preset:
CHANNEL: 12BANK:
3
User Preset:
"A"
"B"
"A"
"B"
TAP Tempo _______
TAP Tempo ________
TAP Tempo _______
TAP Tempo ________
CHANNEL: 12BANK:
3
"A"
"B"
TAP Tempo _______
TAP Tempo ________
15
System Block Diagram:
VTX350H
Three-Channel Guitar Amplifier with Advanced DSP
TUNER
A BC D EF G
INPUT
BUFFER
INPUT
CHANNEL 1
FLEX
GAIN
CHANNEL 2
(MEDIUM
GAIN
WAVE
(LOW
GAIN)
LOW MID HIGH
FLEX
WAVE
GAIN)
LOW MID HIGH
LEVEL
LEVEL
FOOTSWITCH
1 2 34
MUTE
CONTROLLER
TAP/
SAVE
SWITCH
REVERB
CHANNEL 3
FLEX
WAVE
(HIGH
GAIN)
GAIN
DSP
A/B
DSP
DELAY EFFECTS
LEVEL
LOW MID HIGH
LINE
OUT
LINE
IN
POWER
AMP
SPEAKERS
TUBE AMP
SIMULATING
DAMPING CIRCUIT
VTX350H TECHNICAL SPECIFICATIONS:
Output Power Rating 350W RMS @5% THD, 2Ω, 120 VAC
Input Impedance 470kΩ
Total System Gain Ch 1 74dB, all controls @10
Ch 2 88dB, all controls @10
Ch 3 103dB, all controls @10
Maximum Input Signal Accepted 5 volts peak-to-peak
Channel 1 Low Control 26dB range @ 70Hz
Mid Control 10dB range @ 900Hz
High Control 20dB range @ 10kHz
Channel 2 Low Control 26dB range @ 70Hz
Mid Control 10dB range @ 900Hz
High Control 20dB range @ 10kHz
Channel 3 Low Control 17dB range @ 100Hz
Mid Control 16dB range @ 1kHz
High Control 12dB range @ 7kHz
Power Requirements 120 VAC, 60Hz, 95VA
100/115VAC, 50/60Hz, 95VA;
230VAC, 50/60Hz, 95VA
Size and Weight 10” H x 30” W x 10.38” D, 41 lbs.
The VTX350H is covered with a durable Tolex material: wipe it clean with a lint-free cloth.
Never spray cleaning agents onto the cabinet. Avoid abrasive cleansers which would damage the finish.
Crate continually develops new products, as well as improves existing ones. For this reason, the specifications
and information in this manual are subject to change without notice.
www.crateamps.com
©2004 SLM Electronics, a division of St. Louis Music, Inc • 1400 Ferguson Avenue • St. Louis, MO 63133
47-464-01 • 120104
VTX350H
Three-Channel Guitar Amplifier with Advanced DSP
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