REFERENCE: Honda ANC - Car Audio Classifieds!
Car Audio Classifieds!  

Go Back   Car Audio Classifieds! > Car Audio Help & Discussion > Tutorials & Quick References

Tutorials & Quick References This section is for how-to's and quick references for car audio.


Notices

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 11-19-2010, 07:55 PM
DonH's Avatar
Image
 
Activity Longevity
0/20 19/20
Today Posts
0/11 sssss6645
Location: Ontario, California
Thanks: 98
Thanked 201 Times in 161 Posts
iTrader: (30)
Feedback Score: 30 reviews
Default REFERENCE: Honda ANC

NOTE: I am not responsible for stupidity, or breaking of ANY components to the vehicle.
  • This thread is solely for Honda's equipped With ANC. please use google to search if your vehicle is equipped with this, works in conjunction with Honda's that have VCM.
  • This is also ONLY if you are using the stock Head unit with either a LOC, Line Driver etc.
  • ALSO if you are searching for a remedy to a higher pitched hum through the door speakers OR a Heartbeat Like Pulse through the sub woofer OR BOTH ONLY WHEN THE ENGINE IS ON then you have found the right thread!

First 0ff what is ANC?
"
Active Noise Cancellation (ANC) is designed to dramatically reduce low frequency noise in the interior. The system operates whenever the car is running, regardless of whether the audio system is on or off.
There are two microphones in the cabin area.
The microphones capture low-end drivetrain frequencies entering the cabin, and send a signal to the Active Noise Cancellation unit. The control unit then creates a precisely timed reverse phase audio signal that is sent to an amplifier, which powers the door speakers and the subwoofer positioned on the rear parcel shelf.
Since the system is designed to cancel low-frequency sound, it doesn’t use any of the audio system’s tweeters. The ANC dramatically reduces exterior noise. In the frequency range below 100 hertz, ANC results in an impressive 10 dB reduction in noise level." -Honda.com



What does this mean when adding Aftermarket Audio products to your vehicle?


After installing in a friends car yesterday everything was said and done and all tidy like. Turned JUST the key to Acc. Sounded great. Once we turned the car on a god awfull heartbeat like sound came blasting through the woofer. extremely irritating.


After Making sure it was not a ground loop issue OR RCA issue i had nothing left... felt lost. I then turned to the internet to do some re-search on the car Make and model. Found countless threads with very scattered information. I then found ONE thread in particular which led me to believe it was this ANC as the culprit. We noticed that when the door was open with the engine on it would go away. Reading a manual it states "** Note: ANC is de-activated when any door is open" which gave it away.



Now to fix this issue.
  • Before reading on make sure this is the ANC causing your issues and not a ground loop issue or bad rca's SIMPLY by opening a door with the engine on and see if the noise's go away.
  • Upon finding out IF indeed the ANC is the issue here is a simple way to TEMPORARILY DE-ACTIVATE IT
  1. Turn the Key to the ACC Position
  2. Turn Off the STOCK headunit
  3. Press the 1 and 6 buttons. While holding theese press the On or Volume button.
  4. You should now be in the Diagnostic Mode. It will display either "DIAG" or "DIAGNOSTIC" on the scree
  5. Now press the 1 button again. you should now c what says ANC On
  6. Press the 1 button again to TEMPORARILY Dissable the ANC of turn it off.
  7. You should now hear a Loud 50-100hz tone coming through all your speakers. Dont fret! Simply turn the car on from the acc position and start the engine.
  8. Now the ANC is TEMPORARILY off.
  9. Take the car for a test spin and noptice if all the noises are gone either the Boom from a subwoofer or whine from the door speakers. IF it is gone go back and park your vehicle. If it is still there you DO NOT have an ANC issue. check for a ground loop issue OR RCA problem from the LOC , EQ or Line Driver.
  10. With the vehicle parked pop the hood and disconnect the NEG. terminal on the battery.
  11. Now remove the stock HU using instructions which can be found elsewhere online. NOTE Trim bezzels are often held in by small metal clips. dont be afraid to pull hard!
  12. With the stock HU No free, pull it out and get a clear view at the back of the HU
  13. There should be a Blue harness. this is the stock harness which houses the Speaker output's and 12v+, 12v switched, and GROUND.
  14. Directly next to that there will be a harness that is white. THIS is where the ANC module plugs directly into the radio. This is where the subwoofer leads are hooked to. If the car is equiped with a Stock subwoofer then there will be SEVEN wires coming from this harness. if not FIVE wires will be present.
  15. Disconnect said harness from step #14
  16. Replace the HU and any trim pieces/bezels.
  17. Connect the Ground terminal at the battery and shut the hood.
YOU HAVE NOW COMPLETELY DE-ACTIVATED the ANC module.

Check if all noises are gone by turning the car on. If they are gone GREAT! if not you shouldnt be this far hah!

happy trails!
Tags: ANC, heartbeat sound, Whine, Honda, LOC, issues

__________________
SHABAM
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Car Audio Classifieds! forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Location
Where you live
Level of Car Audio Knowledge
What's your level of car audio?

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Soundstream Reference 4.920 lil_italy773 CACO Amp Internals 0 09-01-2010 10:43 PM
FS: Zapco Reference 750.2 donpisto 2-Channel Amplifiers 11 07-08-2010 12:39 PM
zapco reference xjoeyc23x General Car Audio Discussion & Questions 3 05-04-2010 03:13 PM
soundstream reference xjoeyc23x General Car Audio Discussion & Questions 0 05-02-2010 11:50 PM

» Amps
A/d/s/
Advent
Alphasonik
Alpine
American Bass
ARC Audio
Atomic
Audio Art
Audio Gods
Audiobahn
Audiocontrol
Audiopipe
Audison
Aura
Autotek
Avionixx
Bazooka
Beyma
Blaupunkt
Boss
Boston Acoustics
Bravox
Cadence
Cascade (CAE)
CDT Audio
Cerwin Vega
Clarion
Clif Designs
Concept
Coustic
Critical Mass
Crossfire
Crunch
DB Drive
DC Audio
DC Power
DEI
Denon
Diabolo
Diamond
Digital Designs
Directed
DLS
Dual
DYnamat
Dynaudio
Earthquake
Eclipse
Elemental Designs
ESX
Eton
Farenheit
Fi Car Audio
Fix My Speaker
Focal
Fusion
Genesis
Ground Zero
Hafler
Helix
Hertz
Hifonics
Hushmat
Image Dynamics
Infinity
Interfire
JBL
Jensen
JL Audio
JVC
Kenwood
Kicker
Knu Konceptz
Kole Audio
Kove Audio
Lanzar
Lightning Audio
Linear Power
MA Audio
Magnat
Marantz
Massive Audio
MB Quart
McIntosh
Memphis
Metra
MMATS
Mobile Authority
Morel
MTX
Nakamichi
Niche Audio
O2 Audio
Ohio Generator
Optima
Orion
Oxygen Audio
OZ Audio
PG Audio
Phase Linear
Phoenix Gold
Pioneer
Polk
Power Acoustik
Powerbass
Powermaster
Precision Power
Profile
Pyle
Pyramid
RadioShack
Rainbow
Rampage
RE AUdio
Rockford Fosgate
Scanspeak
Scosche
Seas
Sony
soundstream
Sparkomatic
SPL Dynamics
Stinger
Sundown Audio
Swiss Audio
Targa
TC Sounds
TREO Engineering
TRU
Tsunami
Ultimate
US Acoustics
US Amps
Velodyne
Vifa
Viper
Visonik
Xtant
Zapco
Zed Audio
Powered by vBadvanced CMPS v3.2.3
Links
Amp Guts
amplifier, amp guts, ampguts, car audio classifieds, speakers and subs for sale with listings of 12 volt sound systems. Security systems for sale for aftermarket car audio equipment with amplifier and amps for sale
Car Audio Forum
car audio forum, moble audio, car stereo, wholesale car audio, 12 volt, with, amplifier, amp, subwoofer, sound quality, buy car audio, and sell automotive stereo systems for cars
Car Audio Sound Quality Forum
Sound QUality science based car audio forum, amplifier, subs and speaker design, fabrication help, sound systems forum, aftermarket car audio website for sound quality.
Car Stereo Forum
DIYMA car audio stereo forum for 12 volt car audio subwoofer and amplifier systems that have sound quality with wholesale car audio products.


All times are GMT -5. The time now is 06:54 PM.


Powered by vBulletin
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.0
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.