Kurzweil K2500 - PERFORMANCE GUIDE REV F PART NUMBER 910251 CHAP 14 User Manual

DSP Functions
Filters
14-11
This combines 2POLE LOWPASS and LOPAS2 in one three-stage function. The parameters on
the F1 FRQ control input page affect the cutoff frequencies of both filters. The parameters on
the F2 RES page affect the resonance of 2POLE LOWPASS. The parameters on the F3 SEP page
shift the cutoff frequency of LOPAS2, creating a separation between the cutoff frequencies of
the two filters. Positive values raise the cutoff frequency of LOPAS2, while negative values
lower it. If no separation is applied, there’s a 24 dB per octave rolloff above the cutoff frequency.
EditProg:F3|SEP(4P|LOPASS)|<>Layer:1/1||
Adjust:0ct||||||||||Src1||:OFF||||||||||
Fine||:0ct||||||||||Depth|:0ct||||||||||
||||||||||||||||||||Src2||:OFF||||||||||
KeyTrk:0ct/key||||||DptCtl:OFF||||||||||
VelTrk:0ct||||||||||MinDpt:0ct||||||||||
||||||||||||||||||||MaxDpt:0ct||||||||||
<more||F1|FRQ|F2|RES|F3|SEP|F4|AMP|more>
-80
-70
-60
-50
-40
-30
-20
-10
0
10
20
10 100 1000 10000 100000
Frequency in Hertz
Amplitude in dB
Cutoff frequency = C 5;
separation = 0;
resonance from -12 to 24 dB
24
-12
4-Pole Lowpass Filter:
Resonance
-80
-70
-60
-50
-40
-30
-20
-10
0
10
20
10 100 1000 10000 100000
Frequency in Hertz
Amplitude in dB
Cutoff frequency = C 7;
resonance = 12 dB;
separation from -2 to +2
-2
+2
4-Pole Lowpass Filter:
Separation in Octaves

Kurzweil K2500 - PERFORMANCE GUIDE REV F PART NUMBER 910251 CHAP 14 Specifications

General

Type	Synthesizer
Polyphony	48 voices
Multitimbral	16 parts
MIDI	In, Out, Thru
Model	K2500
Document Type	Performance Guide
Revision	F
Part Number	910251
Chapter	14
Synthesis Type	V.A.S.T. (Variable Architecture Synthesis Technology)
Effects	Reverb, Chorus, Delay, EQ
Keyboard	76 keys (velocity and aftertouch sensitive)
Controllers	Pitch wheel, modulation wheel
Outputs	headphone output
Sequencer	16 tracks
Display	LCD
Memory	Expandable via RAM and ROM
Inputs	2 audio inputs