Peavey KB-400 - DDT Compressor LED; Graphic Equalizer; Master Level Control; Crossover Control

EffecU 6/ftev8rb (Sfind) (J|
Adjust signal level applied to elfects (B) send Jack and internal reverp system. Accomodates reverb and external effects, device
simultaneously. Effects unit must be patched into effects 8 send/return jacks Master effects B return control blends external effect with main
signal. Reverb return blends internal reverberation with main signal.
DDT~ Compressor LEO (K|
DOT’** (Distortion Defection Technique) US Patent #4318053 Prevents the power amplifier from severe clipping (distorllng). LED.
illuminates when compressor turns on.
Power LED |L|
Illuminates when AC power is being supplied to the amp.
Graphic Equillz6r(M)
9 band active type ('*^12 dB booslfcut per band). Use for tone coloration, room equalization, etc
The action of a graphic equalizer is generally well understood but several precautions should be taken to avoid overboostlngthefrequency
extremes and thus creating difficulties. The graphic equalizer follows the channel equalization which is substantial by itself and whencomPined
with the boost capability of the graphic, the range becomes tremendous. When running the individual channel equalization near full clockwise
positions, one should generally avoid overbocsting that particular range again in the graphic. This 'double EQ " capability enables a fantastic
amount of cut or boost but must be used wisely to avoid creating a"boomy” or''muffled” sound when too much low end is boosted, as well as
creating slridenr, ‘screechy” or noisy operation when too much high end is boosted. One should also be aware that the ' double equalization”
also may cause problems In the extreme cut positions since cutting the EQ is the equlvalentof reducing the gain for the affected frequency range.
Experimentation wilt quickly illustrate the effectiveness of these equalization controls and generally, no difliculty whatsoever should be
encountered
Elficts A Return |N)
Master effects level (return) control for effects unitpatched Into effects (A)send/relurn jacks; This control only operative when effects unit is
patchefl into master effects (A) serrd/return jacks.
Effects B Return (0|
Master effects level (return) control for elfects unit patched into effects (B) send/return jacks This control only operativewhen effects unit is
patched Into master effects (B) send/return jacks.
MASTER LEVEL CONTROL (P]
The masterlevel control adjusts the galnoflhemain mixing buss and determinesthelevelatthemain output jack, as well asdeterminingthe
signal level applied to the input of the graphic equaiizer/power amplifier It is generally good practice to operate the master level control
somewhere in the middle of its operating range lo allow maximumfiexlbnity Inadjusting overall levels, i e . It's poorpractice to run the Individual
channel gains way up and the master control way down since this effectively negates flexibility afforded by the master control.
MASTER REVERB RETURN C0NTR3L (Qj
The master reverbcontfoldeterminestheamount Of delayed signal (reverberation) that is mixed back into the main mix buss.The acilonof
this control is defeated by use of a remote switch being plugged into befools witch jack located on the patch panel It is important to note that no
reverberation will occur unless the internal delay line is being fed signal from the channel (8) efiects send controls.
CR3SS0VER (R)
TheKB'400isequippGd with a built-in variable crossover network (150 Hz to 1.5 KHz which gives the keyboardist the basic tools to perform
the bi-amp function. To the obtain the bi-amp function, the musician must acquire one (1) additional power amp and one (l) additional
loudspeaker and enclosure. Use a short high quality shi Bided patchcord and make the connection Irom the high output of the crossoverseclion to
the power amp input of the K0-4OO Use a longer high quality shielded patch cord to make the connection (rom the low output of thecrossovsr section
10 the external power amps input.
There are many bi-ampable Peavey speaker systems that will provide excellent performance with the KB'400. These ara the 112, ll5and 118
internationals, SP-1. SP-2, Project V and the 1645 Slant Monitor
EFFECTS A AND B SEND/RETURN JACKS (S|
Use for patching external effects devices capable of receiving 1 volt input and delivering 1 volt output.To patch aneffects unit, connect the
send jack to the Input of the device. Next, connect the output of the device to the return jack. (High quality shielded cables mustbe used for these
connections).
MAIN OUT IT)
High level post channel EO/pre master EQ signal send. The output level is determined by the gain and equalization settings as well as the
master level control
ED INPUT (U|
The graphic input jack provides meansto allow patching into the internal graphicequalizer/poweramp. The jack is of the switching type that
normally picks up the Signal tromthe main output jack. When a plug is inserted imp the graphic input, the circuit path is broken and this input may
now be patched into other devices or any of the output jacks of the K6-400 The graphic input provices much greaterflexipiiity by allowing the
internal graphic/power amp to be utilized as a monllor amp or for any other purpose the user may deem necessary independent of the preamp
section. Its input Impedance is approzimately 22QK ohms and requires a 1 volt signal level for full output at the speaker jacks with the equalizer
flat
EQ OUT (U|
The graphic output provides access to the output of the graphic equalizer. In the normal operating mode, this signal is the same that is
patched to the power amp and can be used to drive external accessories such as tape recorders and boost amplifiers. Whenajack is plugged into
the power amp input, the equalizer is disconnecfed from the internal power amp and. because we have provided patch points at the input and at
the output of the graphic, the equalizer cart be patched In ljne”€lsewhere in the KB-400 Dr In conjunction with external accessories thus providing
total system flexibility.
CROSSOVER INPUT |W]
Input to active built in crossover. This jack is of theswltching type that normally picksupthe slgnalfrom EQ out jack. Whena plug is inserted
into the crossover input, the circuit patch is broken and the crossover can now be patched Into any other output jacks of the KB-400
POWER AMP INPUT (X)
The power amp inpui has been provided to allow the K6-400's internal power amplifier to be patched into any output of the KB-400 or to any
signal source capable of delivering 1 volt RMS into22K ohms. The power amp input Is normally internally patched to the graphic outpul. Whena
jack is inserted into the power amp input, the Internal patch is broken This isolates the graphic equalizer and makes the power amp's input
available to signals from other devices or any of the output jacks ol the KB-400.
REVERB FOOrSWITCH |Y|
The lootswitch tack accomodates the supplied remote reverb cutoff pedal. This footswitch jack is conventional and should present no
operational problems.