iSP Technologies THETA PRO DSP Owner'S Manual Download Page 9

Frequencies below this point will still be boosted or cut, just not as 
much,  and  as  the  frequency  in  the  signal  decreases,  the  amount 
will  dimini

sh  to  0.    This  is  a  ‘shelf  EQ’  type  section  that  remains 

nominally flat at high frequencies. 

 

C)  POST EQ Function 
 

1.  POST EQ (OFF or ON):  Turns off or on the 4-band parametric EQ 

section  that  follows  the  clipper.   

See  the  graph  on  the  previous 

page  for  an  explanation  of  how  a parametric  equalizer  works. 

For  distorted  presets,  these  parameters  have  the  largest  influence 
on  the  tone.    The  fully  parametric  nature  of  these  sections  with 
adjustable  frequencies  and  bandwidths  give  you  the  power  to 
create nearly any tone you want. 

2.  BASS (0 to +15 dB):  The level of boost of the bass EQ. 
3. 

BASS  (40  Hz  to  240  Hz):    The  ‘turnover’  or  upper  frequency  at 
which the amount of bass boost begins to lose effect.  Frequencies 
above  this  point  will  still  be  boosted,  just  not  as  much,  and  as 
frequency  in  the  signal  increases,  the  amount  will  diminish  to  0.  
This is a shelf 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. 

6.  MID1 BW (0.1 OCT to 2.5 OCT):  The approximate width in octaves 

of  the  midrange  boost  or  cut.    Beyond  this  width,  the  curve  will 
slowly transition back to 0 if the bass and treble are set flat. 

7.  MID2  LEVEL  (-15  to  +15):    The  level  of  cut  or  boost  at  the  center 

frequency of the second midrange section. 

8.  MID2  FREQ  (88  Hz  to  6000  Hz):    The  center  frequency  of  the 

second midrange section. 

9.  MID2 BW (0.1 OCT to 2.5 OCT):  The approximate width in octaves 

of the midrange boost or cut. 

10.  TREBLE (-15 to +15 dB):  The level of the treble EQ. 
11.  TREBLE  FREQ  (2000  Hz  to  12.0kHz):    The  lower  frequency  at 

which  the  amount  of  treble  boost  or  cut  begins  to  lose  effect.  
Frequencies below this point will still be boosted or cut, just not as 
much, and as the frequency in the signal decreases the amount will 
diminish  to  0.    This  is  a  ‘shelf  EQ’  type  section  that  remains 
nominally flat at high frequencies. 

 

 
DECIMATOR Function 
 

12. DECIMATOR  (OFF  or  ON):   Turning  the  VALUE  knob  turns  off  or 

on the DECIMATOR noise reduction. 

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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