Where to draw the signal from for the sub?
04-04-2010, 07:36 PM
#106
Registered User
Some people have used the woofer out for the sub amp high-level input. I personally think it's a lot better to just use the clean signal from the head unit. The woofer output already has Bose signal processing applied to it.
Here is what is happening...
The low level signal comes from the head unit to the bose amp (Rear 23-26, Front 33-36).
The Bose amp then adds it's processing, amplifies the signal (now it's high level), and powers the woofer through 8 and 9.
By using wires 8 and 9 you will need to use a high to low-level convertor (some amps have this built in). It doesn't make any sense to convert it to low level when you already have it right there.
I think most audio professionals would agree with me on this. Plus, I don't think you really want the additional Bose processing applied to your subwoofer. There might be a high pass filter applied which might take some of the low frequencies away.
Here is what is happening...
The low level signal comes from the head unit to the bose amp (Rear 23-26, Front 33-36).
The Bose amp then adds it's processing, amplifies the signal (now it's high level), and powers the woofer through 8 and 9.
By using wires 8 and 9 you will need to use a high to low-level convertor (some amps have this built in). It doesn't make any sense to convert it to low level when you already have it right there.
I think most audio professionals would agree with me on this. Plus, I don't think you really want the additional Bose processing applied to your subwoofer. There might be a high pass filter applied which might take some of the low frequencies away.
04-04-2010, 07:39 PM
#107
Registered User
I think we discussed this earlier. If memory serves the signal coming from the head unit is a digital signal. Meaning you would need a pricey D-A converter. Most amps won't be able to process the digital signal. And be careful the remote turn on is only 10 volt not 12 volt. May cause problems.
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04-05-2010, 02:34 AM
#109
Registered User
You might get a cleaner sound in phase with everything else by changing. Are you happy with the sound now? Since the wires are so close I would try the input wires for comparison. I found the high level side to be noisy myself. But if yours sounds fine then you might want to leave it.
04-05-2010, 03:00 AM
#110
hmm this is very interesting.
So just to double check, i can just splice RCAs onto 23-26 and go right into the low input RCAs on my amp?
Heres a pic of my amp
http://www.sonicelectronix.com/pictu...cture_id=66468
I currently have a hi/lo converter spliced onto one of the subs in the rear deck. then have a set of rca's running up to the dash with a control ****, and another set of rcas running back to the amp.
so i can just go off 23-26 to the **** then back to the amp, correct?
what im confused about is how do i connect 4 wires to 2 RCAs?
also, what should i set the switches too, i have FREQ 50hz-250hz; X-Over(LPF-FULL-HPF); Bass Boost(ON/OFF); Level.
im running this amp bridged @ 4ohms = 1000w RMS to 1-10" 1000w RMS sub. Box is ported and tuned to 39hz.
So just to double check, i can just splice RCAs onto 23-26 and go right into the low input RCAs on my amp?
Heres a pic of my amp
http://www.sonicelectronix.com/pictu...cture_id=66468
I currently have a hi/lo converter spliced onto one of the subs in the rear deck. then have a set of rca's running up to the dash with a control ****, and another set of rcas running back to the amp.
so i can just go off 23-26 to the **** then back to the amp, correct?
what im confused about is how do i connect 4 wires to 2 RCAs?
also, what should i set the switches too, i have FREQ 50hz-250hz; X-Over(LPF-FULL-HPF); Bass Boost(ON/OFF); Level.
im running this amp bridged @ 4ohms = 1000w RMS to 1-10" 1000w RMS sub. Box is ported and tuned to 39hz.
Last edited by STOOF; 04-05-2010 at 03:10 AM.
04-05-2010, 03:40 PM
#114
ok so i just bought some make your own RCA things from radio shack lol
now which is - and which is +, inside or outside?
im making myself sound like a total n00b right now hahaah i know what im doing i just wanna make sure.
but yeah im pretty sure the outside is negative and inside is positive, i just wanna confirm this.
now which is - and which is +, inside or outside?
im making myself sound like a total n00b right now hahaah i know what im doing i just wanna make sure.
but yeah im pretty sure the outside is negative and inside is positive, i just wanna confirm this.
04-05-2010, 03:59 PM
#115
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stoof, this was posted by dillyo on page 4....hope its what your after...
"When soldering your RCA's to the positive and negative wires from the HU, solder the positive to the CENTER connector of the plug and the negative to the outside connector. In other words, you want the penile part of the plug to be connected to the positive signal from the HU and the the wide outside ring of the plug to be connected to the negative feed from the HU.
"
"When soldering your RCA's to the positive and negative wires from the HU, solder the positive to the CENTER connector of the plug and the negative to the outside connector. In other words, you want the penile part of the plug to be connected to the positive signal from the HU and the the wide outside ring of the plug to be connected to the negative feed from the HU.
"
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Darth Kinetic (12-29-2013)
04-05-2010, 04:40 PM
#117
stoof, this was posted by dillyo on page 4....hope its what your after...
"When soldering your RCA's to the positive and negative wires from the HU, solder the positive to the CENTER connector of the plug and the negative to the outside connector. In other words, you want the penile part of the plug to be connected to the positive signal from the HU and the the wide outside ring of the plug to be connected to the negative feed from the HU.
"
"When soldering your RCA's to the positive and negative wires from the HU, solder the positive to the CENTER connector of the plug and the negative to the outside connector. In other words, you want the penile part of the plug to be connected to the positive signal from the HU and the the wide outside ring of the plug to be connected to the negative feed from the HU.
"
Good im all wired up!
04-05-2010, 06:27 PM
#118
I just used wire taps and tapped my rcas into 23-26, mkaing sure to match the left, right, positive and negative and I have perfect signal.
And I already told stoof, but I found an awesome grounding spot. If you remove the piece circled here and put your ring terminal under it. There's just two 10mm to remove I think:
And I already told stoof, but I found an awesome grounding spot. If you remove the piece circled here and put your ring terminal under it. There's just two 10mm to remove I think:
04-06-2010, 10:51 AM
#119
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I just used wire taps and tapped my rcas into 23-26, mkaing sure to match the left, right, positive and negative and I have perfect signal.
And I already told stoof, but I found an awesome grounding spot. If you remove the piece circled here and put your ring terminal under it. There's just two 10mm to remove I think:
And I already told stoof, but I found an awesome grounding spot. If you remove the piece circled here and put your ring terminal under it. There's just two 10mm to remove I think:
NEVER MIND...I JUST NEEDED TO RELOAD PAGE...SORRY.
04-07-2010, 10:39 AM
#120
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This post (post #7) had a pdf file of the bose and woofer amp connector pinouts from the '08 service manual. Anyone have the wiring diagram to go with it...its most likely on the pages just before the connector info pages. Thanks.