edjumacate me on pre-outs
04-05-2009, 09:05 PM
#1
50 Watt CAFz'r
Thread Starter
Join Date: Feb 2005
Posts: 61
edjumacate me on pre-outs
my old deck had one pair of 2V pre outs that i Y-split into my 4 channel amp. 2 channels are running a pair of infinity components and the other 2 channels are bridged for a sub. i just got a new deck that has three pair (front/rear/sub) of 4V pre-outs. at first, i just wired up the new deck the same way the old deck and was surprised at how much difference i could hear in the sound (new deck is the same as my old deck, just upgraded model). anyways, a few days later, i wired it up properly (front pre-outs to amp front-inputs, rear to rear) and can't really tell if there is anymore difference in the sound quality.
do i just not have a properly tuned ear or does a single pair of 4V pre-outs sound the same as a triple pair of 4V pre-outs? also, would running RCA's off the sub-output accomplish anything since i don't have a dedicated amp for my sub?
sorry if there are any dumb questions there, i'm still learning the business.
do i just not have a properly tuned ear or does a single pair of 4V pre-outs sound the same as a triple pair of 4V pre-outs? also, would running RCA's off the sub-output accomplish anything since i don't have a dedicated amp for my sub?
sorry if there are any dumb questions there, i'm still learning the business.
04-05-2009, 09:28 PM
#3
my old deck had one pair of 2V pre outs that i Y-split into my 4 channel amp. 2 channels are running a pair of infinity components and the other 2 channels are bridged for a sub. i just got a new deck that has three pair (front/rear/sub) of 4V pre-outs. at first, i just wired up the new deck the same way the old deck and was surprised at how much difference i could hear in the sound (new deck is the same as my old deck, just upgraded model). anyways, a few days later, i wired it up properly (front pre-outs to amp front-inputs, rear to rear) and can't really tell if there is anymore difference in the sound quality.
do i just not have a properly tuned ear or does a single pair of 4V pre-outs sound the same as a triple pair of 4V pre-outs? also, would running RCA's off the sub-output accomplish anything since i don't have a dedicated amp for my sub?
sorry if there are any dumb questions there, i'm still learning the business.
do i just not have a properly tuned ear or does a single pair of 4V pre-outs sound the same as a triple pair of 4V pre-outs? also, would running RCA's off the sub-output accomplish anything since i don't have a dedicated amp for my sub?
sorry if there are any dumb questions there, i'm still learning the business.
you have the 4 channel split now to work like 2 amps... so use the front rca to run your comps and use the sub rca to run the sub...sounds logical enough
04-05-2009, 09:34 PM
#4
Whoops! Didn't read that well enough. If you are bridging the rear channel for the sub, wouldn't you want to use the Sub Rca's as opposed the rear channel? This would in turn give you the proper deck controls for the subwoofer as opposed to just adding the ability to fade the music?
04-06-2009, 07:12 PM
#8
500 Watt CAFz'r
Join Date: Sep 2008
Posts: 723
Are you sure about that Sizzle? I find it odd that a deck with a dedicated sub pre-out doesn't have a sub level control of any kind...
My fiancee's Kenwood Excelon has sub, bass, mid, and high level control. The sub level controls the sub, the bass level only affects the main drivers.
I guess the difference might be the signal that's being sent from the rear pre-out vs. the sub pre-out. I'd venture to say that there's some processing done in the head-unit that makes the sub pre-out only carry low frequency signals, while the rear out would be a full-range signal.
My fiancee's Kenwood Excelon has sub, bass, mid, and high level control. The sub level controls the sub, the bass level only affects the main drivers.
I guess the difference might be the signal that's being sent from the rear pre-out vs. the sub pre-out. I'd venture to say that there's some processing done in the head-unit that makes the sub pre-out only carry low frequency signals, while the rear out would be a full-range signal.
04-06-2009, 07:32 PM
#9
50 Watt CAFz'r
Thread Starter
Join Date: Feb 2005
Posts: 61
Are you sure about that Sizzle? I find it odd that a deck with a dedicated sub pre-out doesn't have a sub level control of any kind...
My fiancee's Kenwood Excelon has sub, bass, mid, and high level control. The sub level controls the sub, the bass level only affects the main drivers.
I guess the difference might be the signal that's being sent from the rear pre-out vs. the sub pre-out. I'd venture to say that there's some processing done in the head-unit that makes the sub pre-out only carry low frequency signals, while the rear out would be a full-range signal.
My fiancee's Kenwood Excelon has sub, bass, mid, and high level control. The sub level controls the sub, the bass level only affects the main drivers.
I guess the difference might be the signal that's being sent from the rear pre-out vs. the sub pre-out. I'd venture to say that there's some processing done in the head-unit that makes the sub pre-out only carry low frequency signals, while the rear out would be a full-range signal.
04-06-2009, 09:01 PM
#10
i'm assuming that if i were able to adjust the sub level, it would be with the bass/mid/treble settings?? there's no sub control there. the CD-45Z manual can be seen HERE and it doesn't mention sub control anywhere.
Considering the deck is a high end SQ unit from the 'good old days', it may very well not have one....I guess you're supposed to do the setup when you tune the system and never touch it again....
On that note, it also doesn't appear to have any way of adjusting Xover frequencies or slopes....looks to me like it's a bare-bones high end tuner and CD player.....any extra processing has to be done by another unit.....
