Гитарный усилитель или кабинет INVASION BASSHEAD600. Инструкция на английском языке

BASS              HEAD400
BASS              HEAD600
Professional
Bass  Amplifier
owner's                     manual

FRONT  PANEL FEATURES
I.INPUT TYPE selector: This Selector is used to adapt the inputstage of the Unit to the correct sensitivity and
impedance for the instrument attached to the input. In the 'out' position the input is adapted to passive instruments,
while in the 'in' position the input is adapted to instruments with internal, active preamplification.  (If the bass attached
to the Unit has internal batteries, the 'in' position would normally be selected).
2.SIGNAL indicator: This LED lights to indicate the presence and relative level of any signal at the input.
3. PREAMP TYPE selector: This selector switches between the valve and solid state input gain stages. In the 'out'
position, the Solid State preamp stage is used; this preamplifier offers  a greater high and low frequency response, and a
clean, tight sound for slap technique and modern tone. In the 'in' position, the valve preamp stage is selected; this
preamp offers  a warmer, more classic sound with a slight breakup at high gain settings, useful for rock playing or close-
to-the-bridge pizzicato techniques.
4.PARAMETRIC  EQ selector: This selector inserts and removes the Parametric EQ from the signal path.
5. OUTPUT MUTE:  Pushing this selector to the 'in' position mutes the output stage of the amplifier, but continues to route
the signal to the TUNER SEND output. This permits the user to tune this instrument silently.
6. EFFECT selector: This selector permits the user to insert or remove the effect loop from the signal path.
7. CLIP status indicator: This LED lights to indicate that the signal at the input of the power amplifier stage is saturating.
8. PROTECT status indicator: This LED lights to indicate that the signal is being  cut to the output stage automatically. The
amplifier reamins in PROTECT mode for a few seconds at power-up in order to protect speakers from abrupt spikes.  In
any other situation, this LED indicates that the amplifier is shutting itself off for reasons of overheating or over current
in the output stage and will remain in protection until conditions in the amplifier return within normal parameters.
9. POWER status indicator: This LED lights to indicate that the Unit's main switch is on and that the amplifier is
powered up.
10. POWER switch: This turns the Unit on and off.
PREAMPLIFIER SECTION
II.  INPUT: This 1/4" mono jack is the primaryinstrument input of the Unit.
12. Gain control: This sets the gain applied to the signal at the input by the preamplifier stage selected by the PREAMP
selector.
13. TREBLE tone control: This permits the user to apply up to 5 dB of boost or cut to the high-frequency content of the
signal at the instrument input.
14. BASS tone control: This permits the user to apply up to 5 dB of boost or cut to the low-frequency content of the signal at
the instrument input.
PARAMETRIC  EQUALIZER  SECTION
15. HIGH  FREQ control: This permits the user to adjust the center frequency of intervention of the High Frequency Level
control from 2kHz to 10kHz or any frequency between. The High Frequency equalizer is a 'Peaking' type, and will apply
more cut or boost to frequencies relative to how close they are to the center frequency selected by this control.
16. HIGH  LEVEL control: This permits the user to apply up to 15dB of boost or cut at the center frequency ser by the
HIGH FREQ control.
17. MID FREQ control: This permits the user to adjust the center frequency of intervention of the Mid Frequency level
control from 300Hz to 3kHz or any frequency between. The High Frequency equalizer is a 'Peaking' type, and will
apply more cut or boost to frequencies relative to how close they are to the center frequency selected by this control.
18. MID LEVEL control: This permits the user to apply up to 15dB of boost or cut at the center frequency set by the MID
FREQ control.
19. LOW FREQ control: This permits the user to adjust the center frequency of intervention of the Low Frequency Level
control from 40Hz to 500Hz or any frequency between. The Low Frequency equalizer is a 'Peaking' type, and will apply
more cut or boost to frequencies relative to how close they are to the center frequency selected by this control.
20.  LOW LEVEL control: This permits the user to apply up to 15dB of boost or cut at the center frequency set by the LOW
FREQ control.
MASTER  SECTION
21. EFFECT LEVEL control: This sets the mix level of the signal from the EFFECT LOOP RETURN in the MASTER
signal.
22. MASTER VOLUME control: This sets the over-all output volume of the Unit.
23. PHONES output: This is for the output to any headphone with at least 8  impedance. The signal is sent to both sides of
stereo headphones.

REAR   PANEL FEATURES
24. PARAMETRIC EQ FOOTSWITCH: This is for the connection of a footswitch with a single, mono 1/4" jack
connector. Such a footswitch permits the remote selection or deselection of the Parametric EQ.
25. LINE OUT: This unbalanced 1/4" jack output offers  a 1V RMS Line Level signal from the master section for routing
the signal from the Unit to an external device such as a secondary amplifier, or a recorder.
26. TUNER SEND: This is a dedicated output of the signal from the primary instrument input for routing to an outboard
tuner.
27. DIRECT OUT PRE/POST selector: This selector permits the user to choose between the unaltered input signal and
the equalized preamp signal for routing to the DIRECT OUT balanced XLR output.
28. DIRECT OUT LEVEL control: This sets the level of the signal at the DIRECT OUT balanced XLR output.
29. PARALLEL SPEAKER OUTPUTS: These are parallel speaker outputs for the connection of speaker cabinets with a
minimum total impedance of 4 U; IE: one 4 ohm cabinet connected to one of the outputs;  2 x 8 ohm cabinets connected
separately to the two outputs;  2 x 8 ohm cabinets connection in parallel and then to one of the outputs, etc
30. EFFECTS FOOTSWITCH: This is for the connection of a footswitch with a single, mono 1/4" jack connector. Such a
footswitch permits the remote insertion or disinsertion of the EFFECT LOOP signal from the MASTER output.
31. EFFECT LOOP SEND: This furnishes a signal from the selected preamplifier for routing to the input of an external
effect unit or the first effect in a chain of effects.
32. EFFECT LOOP-IOdB selector: This selector in the 'in' position reduces the level of the signal at the EFFECT SEND
output by 10dB in order to avoid saturating the input of the attached effect device when the preamplifier is in a high
gain setting.
33. EFFECT LOOP RETURN: This input is used to reinsert the signal from external effects; it is to be connected to the
output of the effect or the last effect in a chain of effects.
34. GROUND LIFT: This selector can be used to detach the audio reference ground from the DIRECT OUT output, in
order to reduce the chance of ground-loop hum due to differences  in ground reference between the amplifier and
equipment connected to this output.
35. DIRECT OUT output: This balabce XLR connector can be used to route a balanced, line level signal to external
devices with balanced input connections, such as sound reinforcement mixers or recording devices.
SPECIFICATIONS
400 Watts RMS @ 4fl (BP400)
Output  Power:   600 Watts RMS @ 4?1(BP600)   EQUALIZATION
1 x 12 AX7(ECC83)       PREAMP
Tubes:           30Hz-  10kHz
Frequency  Response:  >80dB              BASS TONE:     +/-5dB@100  Hz Shelving
S/N Ratio:      PASSIVE — 3.9M П        TREBLE TONE:    +/-5dB@1  kHz Shelving
Input Impedance:   ACTIVE  —100КП        PARAMETRIC
Maximum Input Level:  PASSIVE —24dB      LOW:           +/- 15dB
ACTIVE  — 18dB           LOW FREQ:      40Hz -500Hz
Nominal Input Level:   PASSIVE—30dB B    MID:           +/-  15dB
PASSIVE—30d
ACTIV
—24dBB
ACTIVEE  —24d
BALANCED OUT                             MID FREQ:      300Hz - 3kHz
Nominal Output Level:  -  12dB           HIGH:           +/-  15dB
Maximum Output Level  : - 6dB            HIGH FREQ:     2kHz-  10kHz
LINE OUT                                 Power Supply:   -230VAC / 50Hz
RMSS
Nominal Output Level:   OdB/1VV  RM      Dimensions:     520 x  140 x 420mm
OdB/1
EFFECT SEND
- 8dB/- 18dB           Weight:          20Kg
Maximum Output Level:  OdB
Load Impedance:  >  1  КО
EFFECT  RETURN
Optimum Input Level:  -10dBto0dB
Impedance:      47K?2
Headphone Output:  200mW @ 8*1