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noisy reverb
Posted: 26 Jan 2015, 18:34
by gibielle
I have one 76 revision B in my shop for a repairing work (several broken white keys ... long story...) the owner complain about the noisy reverb. I tested it and it seems an actual issue, when the reverb is on there is lot of white noise in outputs 1&2, even when no sound is generated. Updating s.o. and reloading "factory restore" did not helps, so, before further attempts I was wondering if is that normal or an actual issues.
Gab
Re: noisy reverb
Posted: 26 Jan 2015, 20:55
by Mr_-G-
Not normal.
Re: noisy reverb
Posted: 26 Jan 2015, 21:13
by gibielle
I'll try outputs 3&4, have no clue so far ...
Re: noisy reverb
Posted: 26 Jan 2015, 23:54
by RedLeo
Note that the reverb does not route to outputs 3 and 4, so don't panic if you tried this and heard nothing!
Mr G is right, the reverb is not unusually, or even noticeably, noisy in normal operation.
Re: noisy reverb
Posted: 27 Jan 2015, 00:04
by Mr_-G-
Different instrument, but similar description perhaps?
http://www.norduserforum.com/post49481.html
What if you initialise all 3 sections? Really I do not know what else to suggest.
Re: noisy reverb
Posted: 27 Jan 2015, 00:24
by gibielle
I do not have any tech doc to follow, anyway looking to the main board, as far as I can understand, the reverb function should be performed by DSP, not by specific circuit, so my first guess is some bad data buffer RAM, used by the system only when the reverb is on. Output 1&2 and 3&4 should be generated by 2 different DAC. I'll try the init functions but I guess the o.s. update + factory restore have already do that.