Resetting Driver Memories

[WB6BBZ]

The ACC was removed from the V series to make room for additional coolers.

The adaptive volume control is a setting on the unit that can be turned on and off at will.

A non-dealer modification is required to be able to play DVD's or change NAV settings while moving. It is documented on some other threads here.

Not on mine, my passenger or I can change settings on my STOCK SYSTEM while traveling at highway speeds! It's all done by Touch Screen control, no physical mods to the system required.

I wrote an addition to a thread about this awhile back, I can not remember who started the thread nor what the title was but GP, you should be able to do the same with your Base 05 as it was something that was supposed to work on the 04 and 05s only and I found out it works on my 06 also because it came off the assembly line in late 05.
Which means that my system was an 05 upgrade over the 04 but not an upgrade of the 05. IMHO!

 

[GizmoQ]

XM also uses the Surround Sound which divides the output power to all the speakers.

Actually the XM In Our Cars was always an external, stereo-only (and even that has poor channel separation) add-on and because they used off-the-shelf receivers the output voltage was never corrected to match the internal Denso system. I've run into this problem on several systems using both the two brands of XM units. The head unit is expecting preamp voltage from 3 to 5 volts. The best I ever logged from over a dozen XM boxes was 2.8 Volts.

This can be remedied by adding a Pre-Amp Line Driver Signal Amplifier between the XM box and head unit. Some have adjustment POTs to allow sound leveling with other sources. I've used one like this with good success in my CarPC installs: Pre Amp RCA Input Output Line Driver Signal Amplifier | eBay

 

[05 GRAND DADDY]

Actually the XM was always an external, stereo-only (and even that has poor channel separation) add-on and because they used off-the-shelf receivers the output voltage was never corrected to match the internal Denso system. I've run into this problem on several systems using both the two brands of XM units. The head unit is expecting preamp voltage from 3 to 5 volts. The best I ever logged from over a dozen XM boxes was 2.8 Volts.

This can be remedied by adding a Pre-Amp Line Driver Signal Amplifier between the XM box and head unit. Some have adjustment POTs to allow sound leveling with other sources. I've used one like this with good success in my CarPC installs: Pre Amp RCA Input Output Line Driver Signal Amplifier | eBay

Hey Gizmo can you give a more exact area where this preamp unit sould be placed in the car?


Sent from my iPhone using Tapatalk Thanks Dan

 

[Phrede]

Actually the XM was always an external, stereo-only (and even that has poor channel separation) add-on and because they used off-the-shelf receivers the output voltage was never corrected to match the internal Denso system. I've run into this problem on several systems using both the two brands of XM units. The head unit is expecting preamp voltage from 3 to 5 volts. The best I ever logged from over a dozen XM boxes was 2.8 Volts.

This can be remedied by adding a Pre-Amp Line Driver Signal Amplifier between the XM box and head unit. Some have adjustment POTs to allow sound leveling with other sources. I've used one like this with good success in my CarPC installs: Pre Amp RCA Input Output Line Driver Signal Amplifier | eBay

XM did broadcast a 5.1 surround format on a limited number of channels. It was not Dolby but Neural Audio encoding. Not sure if the amp in the XLRs were equipped to decoded it or not. I doubt it. I doubt XM still broadcasts even these limited channels in 5.1 anymore since they are a dying technology, but maybe. It seems a waste since the basic audio quality of XM is much less then CD or available thru an external input.

Surround sound encoding can be carried across a simple 2 channel connection since it is multiplexed. Once it gets to the final amp then the channels get split. It depends on the encoding and settings if the surround speakers are at a lesser volume or not. I tend to think the systems in the XLR are more of a time/frequency delay type system due to the "expansion" settings available.

 

[GizmoQ]

Hey Gizmo can you give a more exact area where this preamp unit should be placed in the car?

I have mine next to the XM box in my car, but I have several specialized systems added in there too, with accompanying ACC and direct battery power that I added.

If this was the only mod you're doing, its probably easier to put it behind the head unit and get the power for the preamp directly off the fusebox under the passenger's feet. Most of these preamps are for RCA cable, so you'll have to sacrifice a stereo RCA cable and splice half into each side of the XM Audio lines at your cut point and plug the RCA connectors into the input and output of the preamp. I have the RCA one in my Eldorado and Mustang, but put a custom wiring-only one in the XLR to cut down on the possibility of RFI/ground fault interference from the CarPC.

XM did broadcast a 5.1 surround format on a limited number of channels.

In a limited number of home systems. Unfortunately these boxes only decode 5.1 via optical output. I and a few others have modified these boxes to provide optical - the TIN CAN (chipset) outputs are there, but the TOSLink connectors are not. The Analog output on these boxes was never 5.1. I opened mine up to check and it has the exact same TINCAN as the XMD units. I considered adding the TOSLink to it and feeding that to the CarPC, but decided against it until I get all my CarPC addons working seamlessly on the test bench, i.e., HD Radio, OBDII, Phone integration, WiFi hotspot, 2TB external drive etc.

 

[05 GRAND DADDY]

I have mine next to the XM box in my car, but I have several specialized systems added in there too, with accompanying ACC and direct battery power that I added.

If this was the only mod you're doing, its probably easier to put it behind the head unit and get the power for the preamp directly off the fusebox under the passenger's feet. Most of these preamps are for RCA cable, so you'll have to sacrifice a stereo RCA cable and splice half into each side of the XM Audio lines at your cut point and plug the RCA connectors into the input and output of the preamp. I have the RCA one in my Eldorado and Mustang, but put a custom wiring-only one in the XLR to cut down on the possibility of RFI/ground fault interference from the CarPC.

In a limited number of home systems. Unfortunately these boxes only decode 5.1 via optical output. I and a few others have modified these boxes to provide optical - the TIN CAN (chipset) outputs are there, but the TOSLink connectors are not. The Analog output on these boxes was never 5.1. I opened mine up to check and it has the exact same TINCAN as the XMD units. I considered adding the TOSLink to it and feeding that to the CarPC, but decided against it until I get all my CarPC addons working seamlessly on the test bench, i.e., HD Radio, OBDII, Phone integration, WiFi hotspot, 2TB external drive etc.

Thanks Giz I believe I will order one from eBay!


Sent from my iPhone using Tapatalk Thanks Dan

 

[GizmoQ]

Just found out that our XM box output is 1.4V. That's kinda low when the Denso is setup for line leveling at 2.0V.