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Sonic Farm Pro Audio

Vancouver, BC, Canada 
Tel 310-402-2390, 778-863-1613 
www.sonicfarm.com 

[email protected]

 

Sonic Farm 2di4, 2di4 Mk II

 

Pentode Direct Injection Box 

 

USER MANUAL 

 

 

 

 

 

 
 

Summary of Contents for 2di4

Page 1: ...Sonic Farm Pro Audio Vancouver BC Canada Tel 310 402 2390 778 863 1613 www sonicfarm com proaudio sonicfarm com Sonic Farm 2di4 2di4 Mk II Pentode Direct Injection Box USER MANUAL ...

Page 2: ...itar or bass amp 2 2M An EF86 pentode operating in class A is 2di4 s only active gain stage It works in either triode or pentode mode Bypassing cathode increases the gain Frequency dependent bypass using inductors and capacitors yields a subtle but very musical tone control This circuit exhibits a certain non linearity coloration the harmonic distortion may exceed 1 before the actual clipping occu...

Page 3: ...ed with it can take any liability for damage to persons or property caused by either use modification or servicing this unit HOW TO CHANGE TUBES This only applies to a functional unit Please entrust any repairs to qualified service personnel Only an EF 86 or equivalent like 6267 6CF8 or Russian 6J32P pentode can be used Pull out the power cord Wait for at least 10 minutes for all the capacitors to...

Page 4: ...e solution is either to lift the ground off of your amp by using a ground adapter only AFTER you have connected it to the 2di4 with ground switch set to Ground ON and plugged into a grounded 3 prong outlet or by using a signal cable that has the shield disconnected from one of the jacks in which case you LEAVE the amp grounded The idea is to have the amp grounded at ONLY one point either through i...

Page 5: ... how hard the output buffer transformer and ultimately the load are driven The 2di4 may drive your next unit Compressor EQ Converter Mixer into clipping even though the red light doesn t indicate any distortion In that case reduce the output level Its always better to start with lower output level and then increase it as much as your audio chain allows as distortion can occur at more than one poin...

Page 6: ...ection about the amp output on how to eliminate hum buzz from your amp caused by a ground loop when connected to the 2di4 15 Power Switch 16 Line level balanced output electronically balanced XLR pin connection 1 GND 2 HOT 3 COLD Useful for recording or driving a power amp IMPORTANT If you want to drive an unbalanced input you need to make a special XLR to cable Connect XLR s pin 1 to plug ground ...

Page 7: ...ain 54dB at the line output 32dB at the DI mic level output Harmonic distortion 2 before clipping level quickly decreases if driven less Maximum output level 30dBu Minimum output load 600Ω Connectors XLR DI and line output balanced only Instrument input 1 4 unbalanced mono Amp Thru unbalanced mono buffered Unbalanced out mono Aux in 1 8 3 5mm stereo jack Headphones out 1 8 3 5mm stereo jack Headph...

Page 8: ...CONTACT INFORMATION Sonic Farm Pro Audio Vancouver BC Canada Tel 310 402 2390 778 863 1613 www sonicfarm com proaudio sonicfarm com ...

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