Hi All,

First off, I'm excited to join this group in my new to me, 2015 Torch Red Stingray (1LT trim, 7 speed). Loving the car in the two weeks that I have had it. I know I will likely do some performance upgrades in the near future, and have pretty much made up my mind on those, which will likely be an AFE cold intake and the AWE Touring Exhaust. Will likely keep it to these minimal performance upgrades the first year.

The sound in my car (base, 9 speaker) doesn't work for me (yes, I have tried playing with the minimal tone settings and fader), but, its just not clear, sharp and bass is just messy. My Tesla model 3 with the stock sub sounds phenomenal compared to the vette, of course, the vettes engine sounds phenomenal compared to the Tesla !

I want to upgrade to likely two 8" subs to start, and try to keep the existing factory speakers. I would like to add maybe a 5 channel amp. In talking to a couple stereo shops, Im not sure if I need a diginal DSP, and LCI or PAC converter. IF im still not happy with the sound with a new amp and factory speakers, then ill plan to start swapping out the factory speakers as well.

Any input on the control interface required would be greatly appreciated. Sorry in advance if this has been covered, in my quick search, I couldn't find an answer and didnt see any sticky regarding audio, which I understand since this is a performance car

My 2015 7spd Stingray

 

Might wanna try posting your question here: https://www.corvetteforum.com/forums...lectronics-20/

Audio/Electronics section.

 

Cool.. It already has the splitter and side skirts.

 

The problem is it won’t be as simple as adding just a 5-channel amp. The factory system is essentially 3-way fronts, center channel and rear fill. If you plan to reuse the stock speakers, you’ll need min. 8 channel (if not using center channel) amp and for sure a DSP with at least 6 channels input (coming from the 3-way front stage) to sum all the signals to hopefully stitch together the full stereo signal unless there is a device out there that can grab the pure full range signal pre-factory amp. You can then separate the channels going to the 8-channel amp in the DSP and do some further tuning here (time delay, phase, EQ) and try to match the freq range for the stock speaker. Overall a fairly complex setup but the benefit is sending more power, cleaner power to the stock speakers and fine tune the signal going to speakers to better match the factory speakers and cabin.

‘Having said that, if you’re going to invest that much into a DSP and multichannel amp, might as well replace the speakers and add a sub with its own amp or built into the multichannel amp. You probably want to listen to some music or have sounds (Nav prompts, CarPlay, etc) coming through the stock headunit so the best way to go about is to having 2 tuning profiles on the DSP. One for grabbing and summing from the headunit and seperate pure source (either Bluetooth streaming, LDAC, APTX-HD) from either you smartphone or a dedicated High Res Player to get the very best sound quality form your music (preferably lossless). If it were me, I’d do a simple 3-way front stage and a sub. No need to complicate things with a center channel which will mess up imaging and my preference is no rear fill but that’s of course up to you. So figure a 6-channel amp and another amp for the sub or a combination of amps to meet that requirement. Then run new wiring the doors and aftermarket speakers. The stock front woofers are massive 10” can fit a very nice 8-9” 3-way system in there for amazing midbass. Then add a sealed or ported enclosure for a sub. Keep things clean. New speakers, wiring, 3-way front stage, pure signal from a seperate source.

 

And looks like a stage 2 rear spoiler.
It also has the Z51 wheels but not sure of size here. It could be a ZF9 car, which is the Z51 appearance package.

 

Full upgrade

 

Some really knowledgeable people in that section.

 

thanks for this detailed response. At this point, it seems a full retro will easily be in the $2k plus range, which is more than I have. Im wondering, can I just start with adding a sub and an amp? can I run the amp without an expensive digital processer? The idea being, if this satisfies me, then im good for maybe $1k, and if I feel I need more, I can then by additional amps, replace the remaining speakers and add the control unit as needed.

 

ohh, you may be right (though, Im not familiar with the Zf9 package)! I really wanted a z51, but couldn't find one at the price I wanted, then I found this one and really liked it. the wheels are 245/19 in front and 285/20 in back. Prior owner added at least the front lip and skirts (ACS).

 

Nice car! It is surprising these car have less than good audio systems. Please keep us in the loop, I would like to know what you end up with.