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Old 06-15-2019, 04:50 PM   #26
drfeelgood

 
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Drives: 2017 ZL1 Convertible A10
Join Date: Aug 2017
Location: San Gabriel, CA
Posts: 992
Quote:
Originally Posted by Gary H View Post
Thank you - so excuse my ignorance, but doesn't the Bit 10 or 1 take the factory signal and completely flatten it first before adding EQ and TC - and then sending it to the Amp?
so in theory, it is supposed to, but it hasn't worked perfectly .

you have to pull the signal from somewhere. There is no traditional audio signal leaving the back of the headunit like in older cars. So with the newer cars that use MOST50 , Ethernet AB, etc., you have to decode the signals, which is what the NAv-TV and PAC units do.

If you don't decode the signal, you are stuck pulling audio from a post-amplified EQ'd source leaving the amplifier going to a speaker. But this may not carry all of the information you need (chimes, prompts, etc) and then there are issues such as interference with the ANC mics in the doors.

So the best way to do this, is to use one of the decoding devices (PAC or Nav-TV), to get a full flat signal (including leveled voice commands, prompts, chimes, dings, etc) and either send that to an amplifier, or to a full DSP to further tune the audio, prior to amplifiers.
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'17 White ZL1 A10 Convertible - TM ported TB - RotoFab CAI - 2.3" griptech upper pulley - Kooks 1 7/8" Headers with High Flow Cats - Borla S-type Catback - Audio Overhaul - NavTV M650-GM - 20" BlackDiForza- Michelin Pilot Sport4S - Tuned at BRC Raceworks (606rwhp/675trq)

'14 CTS-V Coupe - ZL1 lid - Ported TB - Ported Snout - AirRad CAI - 8.66" lower - 2.55" upper- Greenbelt - SW Headers - SW Catback - Varimax Intercooler Pump - Track Attack Intercooler-Tuned at BRC Raceworks (551rwhp/516trq)

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