pokeyouindaeye
CarAudio.com Newbie
Hi all,
Just installed a Kenwood KMM-X503, Hertz Hpower H604, Infinity 12" Kappa sub, and Polk DB6502+ component speakers in a 2006 Prius...
BUT
got a high-pitch sound coming-out of the component speakers that seems to relate to electrical.
- cuts-out when head-unit is off (or in standby)
- cuts-out when RCA cables (front pair) are disconnected from the amp
- cuts-out when car is sitting but on (i.e., not charging, regenerating, nor driving)
- volume adjustment does not affect it
I have tried:
- re-doing the ground on the amp = minor reduction
- re-running the RCAs along the roof, rather than alongside the floorboards (starting at the foot-well) = minor reduction
I haven't tried:
- re-grounding the head-unit
- different RCA interconnects
SO, my questions, if anyone is willing to help a fellow audiophile out:
- what would you try first?
- what's the story with single-end vs differential and how does that affect my next cable choice attempt (ref. "Truth about RCA cables" video); I'm pretty sure neither the amp nor head-unit are differential
Potential suppliers of cables aren't great in Canada, but want to be ready to try all means next time I open-up the dash and re-run cables.... if need be.
KnuKonceptz seems to have two options for highly shielded cables:
1. Karma "twisted coaxial, triple shielded"
2. Klarity quad-shielded twisted-pair
But also, would a simple coax-type RCA potentially solve this interference? (e.g. Monoprice premium 2x RCA)? My current RCAs are probably basic rubber-insulated, potentially not even twisted pair.... came from an iConnects install kit - link
Just installed a Kenwood KMM-X503, Hertz Hpower H604, Infinity 12" Kappa sub, and Polk DB6502+ component speakers in a 2006 Prius...
BUT
got a high-pitch sound coming-out of the component speakers that seems to relate to electrical.
- cuts-out when head-unit is off (or in standby)
- cuts-out when RCA cables (front pair) are disconnected from the amp
- cuts-out when car is sitting but on (i.e., not charging, regenerating, nor driving)
- volume adjustment does not affect it
I have tried:
- re-doing the ground on the amp = minor reduction
- re-running the RCAs along the roof, rather than alongside the floorboards (starting at the foot-well) = minor reduction
I haven't tried:
- re-grounding the head-unit
- different RCA interconnects
SO, my questions, if anyone is willing to help a fellow audiophile out:
- what would you try first?
- what's the story with single-end vs differential and how does that affect my next cable choice attempt (ref. "Truth about RCA cables" video); I'm pretty sure neither the amp nor head-unit are differential
Potential suppliers of cables aren't great in Canada, but want to be ready to try all means next time I open-up the dash and re-run cables.... if need be.
KnuKonceptz seems to have two options for highly shielded cables:
1. Karma "twisted coaxial, triple shielded"
2. Klarity quad-shielded twisted-pair
But also, would a simple coax-type RCA potentially solve this interference? (e.g. Monoprice premium 2x RCA)? My current RCAs are probably basic rubber-insulated, potentially not even twisted pair.... came from an iConnects install kit - link