Thank You CF Audio Forum
Thread Starter
Team Owner
Joined: Mar 2003
Posts: 96,496
Likes: 82
St. Jude Donor '03 through '17
Thank You CF Audio Forum
Just wanted to post a thank you to those who helped me with my new C6Z.
I retained the factory NAV unit, disconnected the center speaker, replaced the fronts with Focal 165KPS UV, the rears with Focal 130 KRC and a Zapco C2K4.0X, no sub.
Lockpick IPOD interface.
Yes I did run Cardus 10ga which was a PIA but IMO gives me better range.
Tunnel plate, Cowbody rear kit, matted the spline, doors and rear compartment.
I was told in adance that it would be a 50% improvement over stock retaining the NAV unit as the HU. Dan, you were 100% dead on.
A tad too bright for my taste due to the Focals are known for that. The Cardus I suspect did tone them down, I have to see when it's all burned in. The stock tweet location doesn't help but I didn't want to hack the car up as it can be brought back to OEM.
Nice bass and mids but as I said a little too bright. I'm not running a sub and see no need for one with what I've got.
Just played with the gains on the amp for about 5 minutes as time ran out. I suspect when I get more time to dial it in it'll get tighter.
Only drawback is an alternator whine when the whole system is turned off.
All in all a great upgrade.
Thanks Guys!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!
I retained the factory NAV unit, disconnected the center speaker, replaced the fronts with Focal 165KPS UV, the rears with Focal 130 KRC and a Zapco C2K4.0X, no sub.
Lockpick IPOD interface.
Yes I did run Cardus 10ga which was a PIA but IMO gives me better range.
Tunnel plate, Cowbody rear kit, matted the spline, doors and rear compartment.
I was told in adance that it would be a 50% improvement over stock retaining the NAV unit as the HU. Dan, you were 100% dead on.
A tad too bright for my taste due to the Focals are known for that. The Cardus I suspect did tone them down, I have to see when it's all burned in. The stock tweet location doesn't help but I didn't want to hack the car up as it can be brought back to OEM.
Nice bass and mids but as I said a little too bright. I'm not running a sub and see no need for one with what I've got.
Just played with the gains on the amp for about 5 minutes as time ran out. I suspect when I get more time to dial it in it'll get tighter.
Only drawback is an alternator whine when the whole system is turned off.
All in all a great upgrade.
Thanks Guys!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!
Le Mans Master
Joined: Jun 2004
Posts: 9,289
Likes: 16
From: Skippack PA
St Jude Donor '13
The Focal crossovers do have some tweet level adjustment, I assume you have them down to the -6 (could be -3, depends on the xover)? Kale's frequency recommendations are good, except you don't have adjustability for that at the moment so if you do have the xover set at the lowest tweet output level you may end up needing to pad it down a bit more or wire in an equalizer, but one step at a time.
I'll echo Greg's question about the whine. As I recall you're using a fuse in the footwell to trigger, you hear it when the car is running, head is off? Did you put the ground look isolators in?
Congrats & enjoy!
I'll echo Greg's question about the whine. As I recall you're using a fuse in the footwell to trigger, you hear it when the car is running, head is off? Did you put the ground look isolators in?
Congrats & enjoy!
Thread Starter
Team Owner
Joined: Mar 2003
Posts: 96,496
Likes: 82
St. Jude Donor '03 through '17
Amp is triggered to the wiper circuit, it's off along with the whole system. Was thinking about putting a resistor or capacator in the the alternator.
No noise when the car is off. Only time I hear it is when the car is running with the HU and the amp shut off. It's only in the fronts, not the rear.
I can adjust the tweets, I have yet to play with the amp which does give me more flexability to adjust the tweets.
The new UV version of the crossovers will let me adjust -2, -4 and -6.
Isolators didn't do anything so I pulled them out. I spoke with Zapco, the amp comes with transducers which I have close to each other. I might me creating a ground loop do to this.
The Focal crossovers do have some tweet level adjustment, I assume you have them down to the -6 (could be -3, depends on the xover)? Kale's frequency recommendations are good, except you don't have adjustability for that at the moment so if you do have the xover set at the lowest tweet output level you may end up needing to pad it down a bit more or wire in an equalizer, but one step at a time.
I'll echo Greg's question about the whine. As I recall you're using a fuse in the footwell to trigger, you hear it when the car is running, head is off? Did you put the ground look isolators in?
Congrats & enjoy!
I'll echo Greg's question about the whine. As I recall you're using a fuse in the footwell to trigger, you hear it when the car is running, head is off? Did you put the ground look isolators in?
Congrats & enjoy!
I can adjust the tweets, I have yet to play with the amp which does give me more flexability to adjust the tweets.
The new UV version of the crossovers will let me adjust -2, -4 and -6.
Isolators didn't do anything so I pulled them out. I spoke with Zapco, the amp comes with transducers which I have close to each other. I might me creating a ground loop do to this.
Last edited by 1%r; Mar 17, 2009 at 02:10 PM.
Le Mans Master
Joined: Jun 2004
Posts: 9,289
Likes: 16
From: Skippack PA
St Jude Donor '13
Amp is triggered to the wiper circuit, it's off along with the whole system. Was thinking about putting a resistor or capacator in the the alternator.
No noise when the car is off. Only time I hear it is when the car is running with the HU and the amp shut off. It's only in the fronts, not the rear.
I can adjust the tweets, I have yet to play with the amp which does give me more flexability to adjust the tweets.
The new UV version of the crossovers will let me adjust -2, -4 and -6.
No noise when the car is off. Only time I hear it is when the car is running with the HU and the amp shut off. It's only in the fronts, not the rear.
I can adjust the tweets, I have yet to play with the amp which does give me more flexability to adjust the tweets.
The new UV version of the crossovers will let me adjust -2, -4 and -6.
Alt whine off the stock heads is very common, even with my Zapco and the balanced line converters I had it and had to use ground loop isolators.
Le Mans Master
Joined: Nov 2004
Posts: 8,718
Likes: 20
From: Dyer IN
Cruise-In IX Veteran
there is a wire on the oem connector and at the oem amp that acts as a turn on wire and should shut off a few min after the radio
tricky thing is it will turn on when u unlock car etc anytime the oem amp would turn on to sound the chimes etc
tricky thing is it will turn on when u unlock car etc anytime the oem amp would turn on to sound the chimes etc
Le Mans Master
Joined: Jun 2004
Posts: 9,289
Likes: 16
From: Skippack PA
St Jude Donor '13
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Thread Starter
Team Owner
Joined: Mar 2003
Posts: 96,496
Likes: 82
St. Jude Donor '03 through '17
Are you saying that I just should take the Bose amp off line out of the system?
I still think it's off the alt being I have no noise with just the assc switch on. The only time I hear it is when the engine is running and the system shut down.
Le Mans Master
Joined: Jun 2004
Posts: 9,289
Likes: 16
From: Skippack PA
St Jude Donor '13
I might have created a ground loop with the Zapco transducers. I need to diconnect one side to see if that is indeed the case. What ground loop isolators are you using?
All the OEM wires are still in place but not routed to the new speakers. I no longer have chimes as I disconnected the leads to all the speakers from the Bose amp inc the center channel.
Are you saying that I just should take the Bose amp off line out of the system?
I still think it's off the alt being I have no noise with just the assc switch on. The only time I hear it is when the engine is running and the system shut down.
All the OEM wires are still in place but not routed to the new speakers. I no longer have chimes as I disconnected the leads to all the speakers from the Bose amp inc the center channel.
Are you saying that I just should take the Bose amp off line out of the system?
I still think it's off the alt being I have no noise with just the assc switch on. The only time I hear it is when the engine is running and the system shut down.
Thread Starter
Team Owner
Joined: Mar 2003
Posts: 96,496
Likes: 82
St. Jude Donor '03 through '17
You should have chimes regardless - they're not generated by the Bose amp in the Vette, they're generated by the head unit. I didn't have any of the stock speakers connected and I had chimes when I used the factory NAV. What Greg is talking about is using a wire from the factory harness as an amp trigger instead of the fuse panel I directed you to.
Le Mans Master
Joined: Jun 2004
Posts: 9,289
Likes: 16
From: Skippack PA
St Jude Donor '13
Le Mans Master
Joined: Jun 2004
Posts: 9,289
Likes: 16
From: Skippack PA
St Jude Donor '13
Tech Contributor
Joined: May 2003
Posts: 7,035
Likes: 134
From: North Augusta, SC
This pic I did to show the low level output shows that wire I think. If I interpret what markcz said correctly it would be the white wire on the bottom right that is between the orange and yellow/white wires in that pic. Looks to be snaking it's way to the lower set of pins in third position - hence B3.
One of these days when i get a minute I'll scan the plug pinouts and add them to the schematics thread.
Former Vendor
Joined: Aug 2008
Posts: 2,168
Likes: 0
From: Murfreesboro TN.
Amp is triggered to the wiper circuit, it's off along with the whole system. Was thinking about putting a resistor or capacator in the the alternator.
No noise when the car is off. Only time I hear it is when the car is running with the HU and the amp shut off. It's only in the fronts, not the rear.
No noise when the car is off. Only time I hear it is when the car is running with the HU and the amp shut off. It's only in the fronts, not the rear.
The noise is created because there is no signal going in, and the whine is the noise going out, with the amp is still fully powered up. Tagging the OEM amp turn on wire, instead of the wiper circuit, would correct that problem.
