Hi everyone!
I have an persistent issue that I can't seem to figure out, and I'd hope to get some input from you lot!
I live in Norway and bought a NVX BOOST subwoofer Kit through a local webshop. They have partnered up with a car hi-fi shop that has performed the installation of the subwoofer-kit.
At the same time the shop installed the NVX B.O.O.S.T kit, they also installed a high-end 2ch amplifier (DLS Reference CC-2), along with a front speaker-kit (Focal 165KR2)…
As this is a Tesla without the upgraded factory sound, there is no pre-amp out signal (to my knowledge), and the shop wired the DLS-amp (for the front speakers) through a signal-converter that was supplied along with the NVX-kit (it is designed to handle signal output to both Sub and front channels)...
So the stereo speaker signal goes into the LC2i, and is split between the NVX-AMP and the new DLS CC-2 amp)…
Initially I was very impressed by the new sound, but I shortly discovered that something wasn’t right…. The sound from the front-speakers are distorted, especially when producing «full tone» signals (acoustic instruments/classical music/voice)… The bluetooth is practically unusable, as the incoming voice is very distorted. The best way to describe it is that the speakers sounds «blown out», and very distorted. It's the same with AP engage/disengage/backing up chimes... They are distorted and doesn't sound right.
Playing music without an acoustic presence produces no problem at all…
The shop has been trying to fix this for quite a few days now, and I reckon they have spent 10-15 hours troubleshooting. They are the largest provider of aftermarket audio in Norway, and they are very knowledgeable…
They have tried the following:
- New speakers (both new Focals and different brand).
- Wired the speaker-amp directly to the "speaker out signal" from the large screen (the amp has integrated line converter), i.e omitting the LC2 line-converter all together.
- Re-wired with temporary cables.
- Tons of adjustments of gain/volume/volume in.
- Removed the speakers from the car mounts and ran them outside the car.
- Different amp.
- New audio crossovers unit (between mid-tone and treble-units).
- Different sound source (iPhone minijack).
- "Crossed" the R/L-channels to see if the problem is more pronounced on one of the sides.
The only thing that produced a better result was running the system from the iPhone-source instead of from the head-unit. This fixed "90% of the distortion" according to the guy in the shop.
I live 6 hours by car and ferry from the shop, so it’s a rather taxing experience to say the least…
They have now concluded that the «last option» is to try another «high-low-converter» instead of the LC2i. They claim the Tesla audio-system produces too high an output for the LC2i to handle, and that it produces excessive noise…
I’m at my wits end, and I’m uncertain that this approach will alleviate the issue. I’m not looking forward to a 12 hour roundtrip again for them to tell me that they are out of options…
I would really appreciate any advice anyone can offer me. I figure someone here has done similar audio installs, and are familiar with the car and its limitations….
Or have they «miscalculated» the ohm’s involved?
Links:
CC-2 amplifier: Reference CC-2 - 2 x 170 Watt amplifier
Focal KR 165 K2 technical sheet: 165 KR - Technical sheet
I have an persistent issue that I can't seem to figure out, and I'd hope to get some input from you lot!
I live in Norway and bought a NVX BOOST subwoofer Kit through a local webshop. They have partnered up with a car hi-fi shop that has performed the installation of the subwoofer-kit.
At the same time the shop installed the NVX B.O.O.S.T kit, they also installed a high-end 2ch amplifier (DLS Reference CC-2), along with a front speaker-kit (Focal 165KR2)…
As this is a Tesla without the upgraded factory sound, there is no pre-amp out signal (to my knowledge), and the shop wired the DLS-amp (for the front speakers) through a signal-converter that was supplied along with the NVX-kit (it is designed to handle signal output to both Sub and front channels)...
So the stereo speaker signal goes into the LC2i, and is split between the NVX-AMP and the new DLS CC-2 amp)…
Initially I was very impressed by the new sound, but I shortly discovered that something wasn’t right…. The sound from the front-speakers are distorted, especially when producing «full tone» signals (acoustic instruments/classical music/voice)… The bluetooth is practically unusable, as the incoming voice is very distorted. The best way to describe it is that the speakers sounds «blown out», and very distorted. It's the same with AP engage/disengage/backing up chimes... They are distorted and doesn't sound right.
Playing music without an acoustic presence produces no problem at all…
The shop has been trying to fix this for quite a few days now, and I reckon they have spent 10-15 hours troubleshooting. They are the largest provider of aftermarket audio in Norway, and they are very knowledgeable…
They have tried the following:
- New speakers (both new Focals and different brand).
- Wired the speaker-amp directly to the "speaker out signal" from the large screen (the amp has integrated line converter), i.e omitting the LC2 line-converter all together.
- Re-wired with temporary cables.
- Tons of adjustments of gain/volume/volume in.
- Removed the speakers from the car mounts and ran them outside the car.
- Different amp.
- New audio crossovers unit (between mid-tone and treble-units).
- Different sound source (iPhone minijack).
- "Crossed" the R/L-channels to see if the problem is more pronounced on one of the sides.
The only thing that produced a better result was running the system from the iPhone-source instead of from the head-unit. This fixed "90% of the distortion" according to the guy in the shop.
I live 6 hours by car and ferry from the shop, so it’s a rather taxing experience to say the least…
They have now concluded that the «last option» is to try another «high-low-converter» instead of the LC2i. They claim the Tesla audio-system produces too high an output for the LC2i to handle, and that it produces excessive noise…
I’m at my wits end, and I’m uncertain that this approach will alleviate the issue. I’m not looking forward to a 12 hour roundtrip again for them to tell me that they are out of options…
I would really appreciate any advice anyone can offer me. I figure someone here has done similar audio installs, and are familiar with the car and its limitations….
Or have they «miscalculated» the ohm’s involved?
Links:
CC-2 amplifier: Reference CC-2 - 2 x 170 Watt amplifier
Focal KR 165 K2 technical sheet: 165 KR - Technical sheet