JL Slash amps...no loc needed?
#37
03-07-2006, 04:22 PM
Head Output Front Right + Orange/Blue
Head Output Front Right - White/Blue
Head Output Front Left + White
Head Output Front Left - Orange
Head Output Rear Right + Blue
Head Output Rear Right - Pink
Head Output Rear Left + Teal
Head Output Rear Left - Purple
Remote Wire Light Blue/ Silver
that's what i did, connecting them to peripheral sven4 loc, thn going out to the amp,,,,,,,,,, not sure what else i need to explain
Head Output Front Right - White/Blue
Head Output Front Left + White
Head Output Front Left - Orange
Head Output Rear Right + Blue
Head Output Rear Right - Pink
Head Output Rear Left + Teal
Head Output Rear Left - Purple
Remote Wire Light Blue/ Silver
that's what i did, connecting them to peripheral sven4 loc, thn going out to the amp,,,,,,,,,, not sure what else i need to explain
#39
03-07-2006, 05:30 PM
thru 16 gauge stinger speaker wires,,,going to crossover splitting up to tweeters and woofer??? I check everything, + and - to make sure. I tested the amp in my other car, which work fine though
all i hear is hissing noise, even when i turn the head unit off,,,,I wonder why is the amp still on when the head unit is off????
all i hear is hissing noise, even when i turn the head unit off,,,,I wonder why is the amp still on when the head unit is off????
#41
03-10-2006, 10:17 PM
Originally Posted by el_duderino
He meant "aftermarket", I think.
Many aftermarket systems say "balanced inputs" but they mean "balanced-compatible inputs".
True balanced (like in a pro XLR connector) means a (+), a (-), and an audio GND (in the Bose system, this is referenced to chassis ground, I believe, or is a single seperate wire), and inversion summing circuitry on the input to get rid of inducted noise. All the balanced-compatible inputs use the (+) and lack any ability to do the inversion summing that gets rid of any inducted noise.
That's why you better use twisted pair
Many aftermarket systems say "balanced inputs" but they mean "balanced-compatible inputs".
True balanced (like in a pro XLR connector) means a (+), a (-), and an audio GND (in the Bose system, this is referenced to chassis ground, I believe, or is a single seperate wire), and inversion summing circuitry on the input to get rid of inducted noise. All the balanced-compatible inputs use the (+) and lack any ability to do the inversion summing that gets rid of any inducted noise.
That's why you better use twisted pair
#42
03-11-2006, 02:37 PM
I meant common shield ground, as I'm certain you know. The shield ground in an RCA is often referred to by non-EE's as audio ground, and they are the audience.
You speak in a contradiction. Whoever besides you said that "balanced-compatible" amps ground the RCA input shield? No one I know.
I suggest that part of this very definition of "balanced-compatible" is that the amp NOT ground the input shield.
You speak in a contradiction. Whoever besides you said that "balanced-compatible" amps ground the RCA input shield? No one I know.
I suggest that part of this very definition of "balanced-compatible" is that the amp NOT ground the input shield.
#43
03-13-2006, 11:22 PM
Originally Posted by el_duderino
I meant common shield ground, as I'm certain you know. The shield ground in an RCA is often referred to by non-EE's as audio ground, and they are the audience.
You speak in a contradiction. Whoever besides you said that "balanced-compatible" amps ground the RCA input shield? No one I know.
I suggest that part of this very definition of "balanced-compatible" is that the amp NOT ground the input shield.
You speak in a contradiction. Whoever besides you said that "balanced-compatible" amps ground the RCA input shield? No one I know.
I suggest that part of this very definition of "balanced-compatible" is that the amp NOT ground the input shield.
Balanced differential signals are just that: differential signals. The data is present in the differential between the (+) and (-). Relative to a fixed ground, both the (-) and (+) swing when the encoded signal swings. The left and right channels each have a 2-wire differential pair encoding them.
The balanced-compatible inputs on the JL amps are again RCA-connector type. On a normal ground-referenced signal, the center of the RCA connector is the signal and the outer portion is the ground shield connection. On the balanced-compatible amps, the center of the RCA is treated as a differential (+) and the outer portion as a differential (-). That is, the outer portion of the RCA is actually a floating differential ground and is not tied to a fixed earth ground internally. This allows it to be compatible with either a ground-referenced signal or a differential signal, since a ground-referenced signal looks just like a differential signal with a fixed (-).
So when I wire up my JL amp to my OEM differential wiring, I'll hack up an RCA cable and connect the center to the differential (+) and the cable shield to the differential (-), and plug the RCA right in to the amp.
So it's not that balanced-compatible amps "ground" the cable shield, they just use it as a virtual reference ground that can float.
Last edited by MechEE; 03-14-2006 at 02:03 AM.
#44
03-26-2006, 08:46 PM
#45
03-27-2006, 02:05 PM
Lots of feedback here, but I recommend that you do not use the speaker wire level inputs, and get a converter. You may want to look at the David Navone line of converters (simply the BEST). They are adjustable, up to 9V preouts, and are top notch all the way.
If you convert the connection to an RCA, then running a high quality set (twisted pair, etc) will reduce the line noise, produce and carry a better signal, and with the adjustments, you will be able to run the amps at a lower level. I have installed several of these convers... the best product available.
http://www.davidnavone.com/
(model N-684V for 4 channel - $45)
If you convert the connection to an RCA, then running a high quality set (twisted pair, etc) will reduce the line noise, produce and carry a better signal, and with the adjustments, you will be able to run the amps at a lower level. I have installed several of these convers... the best product available.
http://www.davidnavone.com/
(model N-684V for 4 channel - $45)