iSP Technologies THETA PRO DSP Owner'S Manual Download Page 14

 

     octave shift. 

 

3.  PSHIFT MIX (0 to 100):  Controls the relative mix between the original 

 

     signal and the pitch shifted voice. 

 

4.  PSHIFT PAN (0 to 100):  Pans the pitch shifted voice.  0 is fully Left, 

 

     100 is fully Right, and 50 is centered. 

 

5.  DIRECT PAN (0 to 100):  Pans the direct voice.  This is a repeat of the 

 

     same parameter from the Mixer Function.  It is repeated here for 

 

     convenience.  

 

I)  FLANGE Function 

The  flanger  works  in  a  very  similar  fashion  to  the  chorus,  except  the 
variable  delay  time  is  much  shorter,  resulting  in  the  predominate  effect 
being  a  modulated  comb  filter,  not  a  pitch  bend.    It  is  therefore  similar 
sounding  to  the  phaser,  but  since  it  uses  time  delay  the  resulting  phase 
shift  is  linear  with  frequency,  whereas  the  all-pass  filters  used  in  the 
phaser  are  not.    The  result  is  that  the  notch  frequencies  in  the  flanger 
have  a  different  spacing,  and  there  are  many  more  of  them.    There  are 
also two voices in the flanger.  These are panned hard left for voice 1 and 
hard  right  for  voice  2,  removing  the  need  for  Level  and  Pan  parameters.  
Using Phase and Flange at the same time may be interesting results. 
 

1.  FLANGE  (OFF  or  ON):    Controlled  via  VALUE  knob  or  the 

CHORUS/FLANGER  switch.    For  footswitch  control,  the  C/F 
SWITCH  parameter  within  the  Switch  function  must  be  set  to 
FLANGER or CRS+FLA. 

2.  FLA  REGEN  (OFF    to 

–2  dB):    Controls  the  amount  of  feedback 

within the flanger.  This affec

ts the shape of the notches or ‘teeth’ of 

the  comb  filter,  and  also  the  time-domain  decay  of  the  response, 
resulting in a more dramatic effect.  But as in real life, you can get 
tired of too much ‘drama’. 

3.  FLA DEPTH 1 (0 to 100):  Varies the amount of change in the delay 

time,  which  varies  the  amount  of  change  in  frequency  of  the 
notches in Voice 1. 

4.  FLA  RATE  1  (1  to  127):    Varies  the  rate  at  which  the  notch 

frequencies are being modulated.  The rate can  also  be controlled 
by  pressing  2

nd

,  then  pressing  twice  (tapping)  on  the 

CHORUS/FLANGER  switch,  if  the  C/F  SWITCH  is  set  to 
FLANGER, or if it is set to CRS+FLA and the flanger is ON. 

5.  FLA DEPTH 2 (0 to 100):  As described for voice 1. 
6.  FLA RATE 2/1 (0.1 to 1.5):  Sets the ratio between the rate of voice 

2 and the rate of voice  1.  It  is done  this way so that  if the rate of 
voice  1  is  varied  by  either  the  VALUE  knob,  the  TAP  function,  or 
the EXP. PEDAL function, both rates will track each other. 

 

J)  DELAY Function 

 

Summary of Contents for THETA PRO DSP

Page 1: ......

Page 2: ...lectrical shock or death may occur Do not attempt to service this unit No user serviceable parts inside Refer servicing to qualified ISP approved personnel Servicing is required when the unit is damag...

Page 3: ...to the POWER input on the Theta Pro The unit will power up and recall Preset 1 Pressing the RECALL 1 switch will display the Preset 1 title 3 With the Preset title displayed adjust the INPUT LEVEL con...

Page 4: ...rameter within the function and the VALUE knob adjusts the value 8 Changing a value will light the red STORE LED To store the new value for later recall press the 2nd switch followed by the STORE swit...

Page 5: ...s where they are interrelated to the software This fusion of both domains together helps to simplify the understanding of the unit since everything about a single concept is contained together Also ma...

Page 6: ...ts from Left 0 to Right 100 The primary use for this is to have the direct sent to one channel and the delay sent to the other 3 BOOST OFF or ON When ON boosts the level of the signal after the Preamp...

Page 7: ...ositioned before the clipper stage Compression is useful for making clean or low gain settings sound louder as it reduces the level of loud passages and increases the level of soft passages The downsi...

Page 8: ...affected by the boost or cut approximately 1 octaves at 3bd down from the peak frequency An OCTAVE setting of 2 5 will be a much broader portion of the spectrum that is affected by the boost or cut ap...

Page 9: ...type section 4 MID1 LEVEL 15 dB to 15 dB The level of cut or boost at the center frequency in the first midrange section 5 MID1 FREQ 88 Hz to 6000 Hz The center frequency of the first midrange section...

Page 10: ...monitors and use the STAGE OUT LEVEL control to vary the level independently from the DIRECT OUT signal which typically feeds the front of house system in a live situation or mixer DAW inputs in a rec...

Page 11: ...f you wish But the MIN and MAX values you set will only be reached if the pot in your expression pedal sweeps from 0 ohms to the full maximum resistance of the pot within the pedal which often is not...

Page 12: ...t 4 PHASER RATE 1 to 127 Higher numbers give faster rates The rate can also be controlled by pressing 2nd then pressing twice tapping on the PHASER TREMOLO switch if the P T SWITCH is set to PHASER or...

Page 13: ...ll modulate at a different rate resulting in a more random and lush sounding effect 10 CRS LEVEL 2 OFF to 0 dB Same as for voice 1 11 CRS PAN 2 0 to 100 Same as for voice 1 12 The explaination for voi...

Page 14: ...the same time may be interesting results 1 FLANGE OFF or ON Controlled via VALUE knob or the CHORUS FLANGER switch For footswitch control the C F SWITCH parameter within the Switch function must be s...

Page 15: ...y Left 100 is fully Right and 50 is centered K REVERB Function a REVERB OFF or ON Turns the reverb OFF or ON Controlled by the VALUE knob or the REVERB switch Turning the Reverb OFF mutes only the inp...

Page 16: ...s on the switch will turn that function off and the other one on If both chorus and flanger are on the LED will display the rate of the chorus since that is considered the most typical use of the swit...

Page 17: ...es labeled INST and AMP The ring of the EXP PEDAL jack supplies 3 3 volts DC to the IN jack on the pedal and the tip of the EXP PEDAL jack reads the wiper voltage on the OUT or AMP jack of the pedal I...

Page 18: ...his you will need a MIDI interface box such as an iConnectivity iConnect MIDI2 which interfaces MIDI to a PC via USB port You will also need software to record the sysex data and save it to disc or lo...

Page 19: ...mono feed to the front of house Note that this will also affect the phones output since they share the same pair of DAC channels e G DIRECT TRIM 12 to 0 dB This attenuates the DIRECT OUTs to prevent i...

Page 20: ...hey cannot be stored to You can still edit them but any changes will be lost if another preset is recalled or if you power down This helps prevent the presets from becoming altered during tryouts in s...

Page 21: ...the 4 RECALL switches is pressed that preset will be recalled and the preset s title will be displayed Pressing the down or up switches the first two from the lower left will que up the next song and...

Page 22: ...his process for the RECALL 3 and RECALL 4 switches When complete press 2nd then STORE to save the changes to the current song Turning the FUNCTION knob fully counterclockwise will then display the son...

Page 23: ......

Page 24: ...S DIMENSIONS WEIGHT DIRECT OUTPUT CONNECTION POWER NOTE 0dbu 775 VRMS 470K OHM 21 5db input level 8dbu to 13 5dbu 13 5dbu 110dbu A WTD 123db A WTD 125db 002 80db 22db 20Hz 20KHz 0 5db MIN 95dbu MAX 0...

Page 25: ...a copy of the original receipt a note stating the problem your contact information and send it to ISP Technologies LLC 5479 Perry Drive Unit B Waterford MI 48329 Attn Repair Dept All shipping charges...

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