Questions & Answers

Audiobox iTwo preamp level lineairity incorrect

+1 vote
asked Nov 5, 2018 in AudioBox i-Series by basmeijer (6,350 points)
edited Mar 6, 2020 by basmeijer

This problem is hardware related and involves the preamp gain pot of this nifty little blue box which is for the rest working OK.
“OK” was mentioned here instead of “fine” because from this unit on I realized that one XMAX-branded preamp is not the same as other similar branded preamps in more expensive units. There is definetely a difference. OR.... there is a relationship with the proplem discribed below.

There is something wrong with the linearity of the preamp gain and I presume the 1-2 pots need replacement, due to a manufaturing and/or design flaw, or another modification in the preamp design (like a change of a resistor value), depending on the design with I do not know, is needed.

Within the last part of the pot dial there is a very audible and highly unusual jump in preamp gain.

Please comment.
Also please mention if this is only affecting certain serial no.

This problem is not unique and mentioned on the Presonus forum before.

1 Answer

0 votes
answered Mar 6, 2020 by basmeijer (6,350 points)
And the answer to this is a couple of years later..... (void)

No one knows or no one that really knows about the cause wants to share because a product callback of a product that already is cheap is extremely costly.

Please do not produce cheap products any more, PreSonus! It is apparently not your strongest quality!