on a regular potentiometre "dial" gain, 2v would be your maxx setting usually low end decks and line out converters should be set at this level. if you have a general purpose mid-grade head unit, it usually comes with a 4-5v pre-out.....only high-end expensive SQ head unit come with a "true" 6-6.5v pre out.
This selector could also be used in conjunction with a potentiometer as well. The switch mearly selects a range which gives you more sweep to fine tune you gain settings. Other manufactures do this as well.
if you have a general purpose mid-grade head unit, it usually comes with a 4-5v pre-out.....only high-end expensive SQ head unit come with a "true" 6-6.5v pre out.
What SQ decks put out 6-6.5 "true" volts. Any of them packing TA, 13+ band EQ, and Xover control in one case? Always looking to upgrade.... You know what I never actually got to hear but wish I did. The Pioneer P9.
I've been out of the Car Audio game for a while and I couldn't believe how much prices have dropped on Head Units and Amps.
I have an Eclipse 5506, which was THE SQ unit of it's day. It was $1300 back then and it only had a 3 band graphic EQ on board!
But this doesn't make sense, if you factor in inflation, that's like a 1/3rd the cost of my 5506 and it's far more advanced (in most ways). As far as I can tell it has been built to superior SQ specs compared as well.