Crate Amplifiers Musical Instrument Amplifier VTX350H User Manual

VTX350H  
Three-Channel Guitar Amplifier  
with Advanced Digital Signal  
Processing  
User’s Guide  
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VTX350H Three-Channel Guitar Amplifier with Advanced DSP  
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 mod-  
ulation 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.  
CAUTION  
PRECAUCION  
ATTENTION  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
RIESGO DE CORRIENTAZO  
NO ABRA  
RISQUE D'ELECTROCUTION  
NE PAS OUVRIR  
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC  
SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOIS-  
TURE. TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT  
REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE.  
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.  
PRECAUCION: PARA REDUCIR EL RIESGO DE INCENDIOS  
O
DESCARGAS  
LA  
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.  
ELECTRICAS, NO PERMITA QUE ESTE APARATO QUEDE EXPUESTO  
A
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.  
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.  
EXPLANATION OF GRAPHICAL SYMBOLS:  
EXPLICACION DE SIMBOLOS GRAFICOS:  
EXPLICATION DES SYMBÔLES GRAPHIQUES:  
"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"  
"DANGEROUS VOLTAGE"  
“VOLTAJE PELIGROSO”  
"DANGER HAUTE TENSION"  
=
=
3
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VTX350H Three-Channel Guitar Amplifier with Advanced DSP  
The Front Panel:  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
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 counterclock-  
wise 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, pro-  
viding 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 illumi-  
nated.  
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.  
4
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VTX350H Three-Channel Guitar Amplifier with Advanced DSP  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
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.  
5
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VTX350H Three-Channel Guitar Amplifier with Advanced DSP  
The Rear Panel:  
28  
29  
30  
31  
32  
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 pre-  
amp 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.  
CAB IMP  
4 ohms  
8 ohms  
8 ohms  
# CABS TOTAL IMP  
CAB IMP  
16 ohms  
16 ohms  
16 ohms  
# CABS TOTAL IMP  
2
2
4
2 ohms  
4 ohms  
2 ohms  
2
4
8
8 ohms  
4 ohms  
2 ohms  
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 prob-  
lems. 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.  
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.  
6
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VTX350H Three-Channel Guitar Amplifier with Advanced DSP  
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 con-  
trol 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.  
SIGNAL PATH FOR DELAY "EFFECTS 1, 2 & 3"  
SIGNAL PATH FOR ALL OTHER EFFECTS  
COMBINATIONS  
EFFECTS  
DELAY  
DELAY  
EFFECTS  
DELAY:  
NAME  
DESCRIPTION  
SAVE/TAP BUTTON CONTROLS:  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
time: .05–1 second  
n/a  
Single 1  
Single 2  
Single 3  
Single 4  
Echo 1  
Echo 2  
Echo 3  
Echo 4  
Tape 1  
Tape 2  
Tape 3  
Tape 4  
Effects 1  
Effects 2  
Effects 3  
Ø
Single delay w/low level  
Single delay w/medium level  
Single delay w/high level  
Single delay w/maximum level  
Echo w/low level  
Echo w/medium level  
Echo w/high level  
Echo w/maximum level  
Tape echo w/low level  
Tape echo w/medium level  
Tape echo w/high level  
Tape echo w/maximum level  
Echo w/low level, before effect  
Echo w/medium level, before effect  
Echo w/high level, before effect  
Bypass - no effect  
EFFECTS:  
NAME  
DESCRIPTION  
Chorus w/low depth  
SAVE/TAP BUTTON CONTROLS:  
speed: 1 cycle/tap - tap period: .05–1 second  
speed: 1 cycle/tap - tap period: .05–1 second  
speed: 1 cycle/tap - tap period: .05–1 second  
speed: 4 cycle/tap - tap period: .05–1 second  
speed: 4 cycle/tap - tap period: .05–1 second  
speed: 4 cycle/tap - tap period: .05–1 second  
speed: 2 cycle/tap - tap period: .05–1 second  
speed: 2 cycle/tap - tap period: .05–1 second  
speed: 2 cycle/tap - tap period: .05–1 second  
speed: 1 cycle/tap - tap period: .05–1 second  
speed: 1 cycle/tap - tap period: .05–1 second  
speed: 1 cycle/tap - tap period: .05–1 second  
n/a  
Chorus 1  
Chorus 2  
Chorus 3  
Flange 1  
Flange 2  
Flange 3  
Phaser 1  
Phaser 2  
Phaser 3  
Vibrato 1  
Vibrato 2  
Vibrato 3  
Oct  
Chorus w/medium depth  
Chorus w/high depth  
Flanger w/low depth  
Flanger w/medium depth  
Flanger w/high depth  
Phaser w/low feedback  
Phaser w/medium feedback  
Phaser w/high feedback  
Vibrato w/low depth  
Vibrato w/medium depth  
Vibrato w/high depth  
Adds signal one octave lower  
Touch-sensitive wah-wah  
Inverted wah-wah  
Wah  
R-Wah  
n/a  
n/a  
Ø
Bypass - no effect  
n/a  
7
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VTX350H Three-Channel Guitar Amplifier with Advanced DSP  
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.  
3 SECONDS  
CHANGES ARE  
SAVED AS  
NEW PRESET  
(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 but-  
ton’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.  
8
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VTX350H Three-Channel Guitar Amplifier with Advanced DSP  
Using the Footswitch:  
The special Crate four button footswitch supplied with the VTX350H performs a vari-  
ety 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 stan-  
dard 5-wire midi cable (supplied) may be used to connect the footswitch to the amplifier.  
VTX350H REAR PANEL  
When the footswitch is connected  
to the amplifier, the first tap of but-  
tons 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’.”  
5-Conductor  
MIDI cable  
FOOTSWITCH  
NOTE: DSP Bank “B” pre-  
sets are only accessible  
when the footswitch is  
connected to the amplifier.  
When the footswitch is not  
connected, only DSP Bank  
“A” is accessible.  
1
2
3
4
SWITCH #1:  
CH. 1 SELECT;  
SWITCH #2:  
SWITCH #3:  
SWITCH #4:  
CH. 2 SELECT;  
CH. 3 SELECT;  
LED on: DSP BANK A  
LED off: DSP BANK B  
TAP/SAVE FOR CH. 1  
TAP/SAVE FOR CH. 2 TAP/SAVE FOR CH. 3  
9
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VTX350H Three-Channel Guitar Amplifier with Advanced DSP  
DSP Factory Presets:  
The VTX350H Factory Presets for the DSP section are as follows:  
Factory Preset 1: Clean w/Chorus, Delay, Reverb  
CHANNEL:  
1
2
3
BANK:  
"A"  
"B"  
TAP Tempo MEDIUM  
TAP Tempo MEDIUM  
Factory Preset 2: Rhythm w/Slapback Delay  
CHANNEL:  
1
2
3
BANK:  
"A"  
"B"  
TAP Tempo FAST  
TAP Tempo N/A  
Factory Preset 3: Solo w/Flange, Delay, Reverb  
CHANNEL:  
1
2
3
BANK:  
"A"  
"B"  
TAP Tempo MEDIUM  
TAP Tempo MEDIUM  
10  
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VTX350H Three-Channel Guitar Amplifier with Advanced DSP  
DSP Factory Presets:  
The VTX350H Factory Presets for the DSP section are as follows:  
Factory Preset 4: Clean w/Reverb  
CHANNEL:  
1
2
3
BANK:  
"A"  
"B"  
TAP Tempo MEDIUM  
TAP Tempo MEDIUM  
Factory Preset 5: Rhythm w/Reverb  
CHANNEL:  
1
2
3
BANK:  
"A"  
"B"  
TAP Tempo FAST  
TAP Tempo N/A  
Factory Preset 6: Solo w/Reverb  
CHANNEL:  
1
2
3
BANK:  
"A"  
"B"  
TAP Tempo MEDIUM  
TAP Tempo MEDIUM  
11  
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VTX350H Three-Channel Guitar Amplifier with Advanced DSP  
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  
12  
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VTX350H Three-Channel Guitar Amplifier with Advanced DSP  
Suggested Settings:  
13  
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VTX350H Three-Channel Guitar Amplifier with Advanced DSP  
DSP Fill in the Blanks(User Settings):  
Copy this page to fill in your own DSP Presets!  
User Preset:  
CHANNEL:  
1
2
3
BANK:  
BANK:  
BANK:  
"A"  
"B"  
TAP Tempo ________  
TAP Tempo ________  
TAP Tempo ________  
TAP Tempo ________  
TAP Tempo ________  
TAP Tempo ________  
User Preset:  
CHANNEL:  
1
2
3
"A"  
"B"  
User Preset:  
CHANNEL:  
1
2
3
"A"  
"B"  
14  
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VTX350H Three-Channel Guitar Amplifier with Advanced DSP  
System Block Diagram:  
TUNER  
A BC D EF G  
CHANNEL 1  
FLEX  
INPUT  
WAVE  
BUFFER  
LEVEL  
LEVEL  
LEVEL  
INPUT  
(LOW  
GAIN)  
GAIN  
GAIN  
GAIN  
LOW MID HIGH  
LOW MID HIGH  
LOW MID HIGH  
CHANNEL 2  
FLEX  
WAVE  
(MEDIUM  
GAIN)  
CHANNEL 3  
FLEX  
FOOTSWITCH  
1
WAVE  
2
3
4
(HIGH  
GAIN)  
MUTE  
SWITCH  
CONTROLLER  
LINE  
OUT  
DSP  
A/B  
TAP/  
SAVE  
LINE  
IN  
DSP  
POWER  
AMP  
SPEAKERS  
REVERB  
DELAY  
EFFECTS  
TUBE AMP  
SIMULATING  
DAMPING CIRCUIT  
15  
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VTX350H Three-Channel Guitar Amplifier with Advanced DSP  
VTX350H TECHNICAL SPECIFICATIONS:  
Output Power Rating  
Input Impedance  
350W RMS @5% THD, 2, 120 VAC  
470kΩ  
Total System Gain  
Ch 1  
Ch 2  
Ch 3  
74dB, all controls @10  
88dB, all controls @10  
103dB, all controls @10  
Maximum Input Signal Accepted  
5 volts peak-to-peak  
Channel 1  
Low Control  
Mid Control  
High Control  
26dB range @ 70Hz  
10dB range @ 900Hz  
20dB range @ 10kHz  
Channel 2  
Low Control  
Mid Control  
High Control  
26dB range @ 70Hz  
10dB range @ 900Hz  
20dB range @ 10kHz  
Channel 3  
Low Control  
Mid Control  
High Control  
17dB range @ 100Hz  
16dB range @ 1kHz  
12dB range @ 7kHz  
Power Requirements  
Size and Weight  
120 VAC, 60Hz, 95VA  
100/115VAC, 50/60Hz, 95VA;  
230VAC, 50/60Hz, 95VA  
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.  
©2004 SLM Electronics, a division of St. Louis Music, Inc 1400 Ferguson Avenue St. Louis, MO 63133  
47-464-01 120104  
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