Help Installing Amplifier To Stoch Head Unit
Thread Starter
Drifting
Joined: Apr 2004
Posts: 1,889
Likes: 0
From: ottawa ontario
Help Installing Amplifier To Stoch Head Unit
Need some help. I installed an amp and 10 Pioneer sub in a stealthbox and the sub barely moves. I tapped into the rear speakers for the line level that is built into the amp. I know the rear speakers are crossed over from the Head Unit but why should that make a differents since the amop will be crossed over just to power the sub? Will tapping into the front speakers cure the problem? Please don't refer me to the audio section, i have already been there and no clear answer and no guesses either. I want someone that had done the job to please get back to me..I don't want to get a separate line level adapter i have one on my amp. The amp is 150 bridged and ghas a low pass crossover for a sub?
Pro
Joined: Dec 2003
Posts: 563
Likes: 0
From: Albuquerque NM
Two problems here... If you tap into the speaker lines, you are only getting that audio. You still need to find a source for the REM, or you amp will run all the time... and will kill the battery. Second, you are getting a full spectrum audio to the amp, and no matter what your amp manufacture said, you are not going to get just a low level frequency. Just the sad truth of amps, the crossovers suck. Your sub will become a large mid speaker. You will still be getting voice audio out of it witch my damage the voice coils. The best thing to do is run to some stereo shop.. (not best buy or circuit city, they will try to push you to get a new deck) and ask them how they would hook it up. They can give you great advice, and most of the time a good deal on the parts you need. But my overall advice is getting a new deck that has 1 or 2 good pre-amps out.
But that is just my .02
Note, I have done what you are looking to do with my old T-bird SC. It only caused more problems then it was worth that is when I said the heck with it, and got a new HU.
But that is just my .02
Note, I have done what you are looking to do with my old T-bird SC. It only caused more problems then it was worth that is when I said the heck with it, and got a new HU.
Le Mans Master
Joined: Dec 2005
Posts: 6,420
Likes: 5
From: "This is not a psychotic episode, but a cleansing moment of clarity."
I thought I read somewhere that there is an available adapter that plugs into the Delco unit for the sole purpose of feeding an external amp.
Race Director
Joined: Jul 2004
Posts: 10,295
Likes: 4
From: Downers Grove IL
St. Jude Donor '15
The low frequencies needed to run a subwoofer are not present in the rear speakers. You need to either A) tap the speaker wires going to the woofers in the doors or B) buy a PAC-OEM1 adapter. It is a plug-and-play unit that's simple to install, and gives you pre-amp outputs needed for your sub. The rear speakers in the Blose system are basically useless.
Le Mans Master
Joined: Aug 2005
Posts: 7,201
Likes: 0
From: DP(oh you know where) IL
St. Jude Donor '06
you need to get an adapter to add an amplifier to the stock head unit. Your question probably wasnt asnswered in audio section because this is in FAQ section. Also you are splicing into the wrong speakers as well. The rears are mid range. You would need to splice into the subs that are in the door. I just bought one of these and this is the best price ive found so far on this item. Shipping was super fast too.
http://www.thediscountmall.com/mall/AOEMVET1
This adapter is a plug n play type, just plug it in and youve got the rca outputs that you need. The info is here, its the oem-1
http://www.pac-audio.com/products/pr...%20Integration
you beat me too it chicago....i was looking for links
http://www.thediscountmall.com/mall/AOEMVET1
This adapter is a plug n play type, just plug it in and youve got the rca outputs that you need. The info is here, its the oem-1
http://www.pac-audio.com/products/pr...%20Integration
you beat me too it chicago....i was looking for links
Thread Starter
Drifting
Joined: Apr 2004
Posts: 1,889
Likes: 0
From: ottawa ontario
Originally Posted by Chicago
The low frequencies needed to run a subwoofer are not present in the rear speakers. You need to either A) tap the speaker wires going to the woofers in the doors or B) buy a PAC-OEM1 adapter. It is a plug-and-play unit that's simple to install, and gives you pre-amp outputs needed for your sub. The rear speakers in the Blose system are basically useless.
Can i tap into the wires behind the HU? Before or after the bose amp?
Does it matter? I already have a line level adpater built onto the amp so i don't need the adapters such as the PAC OEM1 or AOEMVET1..
Le Mans Master
Joined: Aug 2005
Posts: 7,201
Likes: 0
From: DP(oh you know where) IL
St. Jude Donor '06
Originally Posted by mitymikec
Can i tap into the wires behind the HU? Before or after the bose amp?
Does it matter? I already have a line level adpater built onto the amp so i don't need the adapters such as the PAC OEM1 or AOEMVET1..
Does it matter? I already have a line level adpater built onto the amp so i don't need the adapters such as the PAC OEM1 or AOEMVET1..
before the bose amp behind the HU
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Burning Brakes
Joined: Nov 2004
Posts: 822
Likes: 0
From: Grafton Ohio
I'm using a JBL monoblock amp to power my subs in the rear with the rest of the stereo being all stock. The amp has inputs for both high and low level inputs so I used the rear speaker channels to connect the signal to the amp. It works fine. It doesnt matter which channels you're using if all you're using them for is to give your amp. a signal. It made no difference in my application, I tried all 4 channels into the amp and the power output to the subs was the same.
Thread Starter
Drifting
Joined: Apr 2004
Posts: 1,889
Likes: 0
From: ottawa ontario
Originally Posted by jers98vet
I'm using a JBL monoblock amp to power my subs in the rear with the rest of the stereo being all stock. The amp has inputs for both high and low level inputs so I used the rear speaker channels to connect the signal to the amp. It works fine. It doesnt matter which channels you're using if all you're using them for is to give your amp. a signal. It made no difference in my application, I tried all 4 channels into the amp and the power output to the subs was the same.
The bass signal is not present in the back speakers. I need an answer that is other then using the adapters. The amp had line level built in so i don't need the adapter...
Burning Brakes
Joined: Nov 2004
Posts: 822
Likes: 0
From: Grafton Ohio
Originally Posted by mitymikec
The bass signal is not present in the back speakers. I need an answer that is other then using the adapters. The amp had line level built in so i don't need the adapter...
Le Mans Master
Joined: Dec 2005
Posts: 6,420
Likes: 5
From: "This is not a psychotic episode, but a cleansing moment of clarity."
Originally Posted by jers98vet
It doesn't matter if there is low freq signal in the rears or not. All you are using the speaker channels for is to power the amp. Now if your amp has adj. crossover on the outputs, you want to set that as low as possible; below 80hz is best. In other words, any signal from the stereo will work to power up the amp, even if you pick it up from crossed over tweeders. The crossover comes into play on the output side of the amp.
Last edited by JMc; Feb 10, 2006 at 06:34 PM.
Thread Starter
Drifting
Joined: Apr 2004
Posts: 1,889
Likes: 0
From: ottawa ontario
Originally Posted by jers98vet
It doesn't matter if there is low freq signal in the rears or not. All you are using the speaker channels for is to power the amp. Now if your amp has adj. crossover on the outputs, you want to set that as low as possible; below 80hz is best. In other words, any signal from the stereo will work to power up the amp, even if you pick it up from crossed over tweeders. The crossover comes into play on the output side of the amp.
It does matter. I have it hooked up to the rears now and my sub barely moves and not noticable sound increase..
Burning Brakes
Joined: Nov 2004
Posts: 822
Likes: 0
From: Grafton Ohio
If I am incorrect than I apologize for any confusion I may have caused. What I have stated is the exact way I have my subs and amp wired and I have an spl of 147 and can be heard 3 blocks away.
Le Mans Master
Joined: Dec 2005
Posts: 6,420
Likes: 5
From: "This is not a psychotic episode, but a cleansing moment of clarity."
Originally Posted by jers98vet
If I am incorrect than I apologize for any confusion I may have caused. What I have stated is the exact way I have my subs and amp wired and I have an spl of 147 and can be heard 3 blocks away.
Thread Starter
Drifting
Joined: Apr 2004
Posts: 1,889
Likes: 0
From: ottawa ontario
Originally Posted by JMc
Again, I want to clarify that I have no idea if the low frequencies are being filtered out prior to reaching the rear speakers or not. Frankly, I don't know why they would be. That makes no sense to me. In which case, your setup makes perfect sense.
Melting Slicks
Joined: May 2003
Posts: 3,174
Likes: 0
From: arlington tx
i was told u cant use line out w/this bose because of several reasons. i used line out on my previous car so thats what i was going to do this time but i was told, also was told via this forum over in the audio section, that u cannot tie into any bose speaker to get the line out needed to send signal to an amp. thats why people keep saying buy an adapter. i got the PAC OEM adapter and it gave me RCA outs and works flawlessly. just buy the adapter, recognize GM made it hard to do anything to the bose system and realize u cant tie into the speakers like a "normal" car. thats why they sell the adapters. and no, the typical line out/RCA adapter will not work. i tried one from one shop then had to take it back and go to another who told me yeah, the vette is the exception. cant do it, here need this and it works.