User Guide One to improve Neptune II
Contents
1. March 20th 2004 User Guide One to improve Neptune II Oscillator s breakthrough Some people may noted that the Oscs may be hear able even the VCA is closed Especially Osc2 at higher Frequencies It is a problem of over talk on some tracks on the pcb To have the best possible S N ratio on an analog Synthesizer general we strongly recommend to have the internal mixer section always full on i e if one choose for Osc1 put this pot to 100 not only to the half The same is with Volume 100 there and take down the level on the external mixer To improve the S N ratio on the Neptune II we recommend the following procedure it is done from serial number 50131 by factory On the analog pcb big one cut the white track at the IC on backside One the small pcb cut the white track at the IC bottom side ALLT ann T TCC _ pe NEF RRR NEEE SHEHE 2 HE k SAGEEE v MEENE EEE EER TR Toot Hd 6 ALLL EERE EERE LOAN Se INGE Or LL a Te a a TEE oom a d ITTI TTITTTIT CCC ee mmm Nm TCR ee ee ee ee ali pen SN omen pi spectralaudio swissoniline ch With a wire do a connection from the pin were you cut away the track on the analog pcb to R500 right pin on this picture
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