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- Path: sparky!uunet!haven.umd.edu!darwin.sura.net!jvnc.net!rutgers!cmcl2!panix!dans
- From: dans@panix.com (Dan Simoes)
- Newsgroups: rec.audio.car
- Subject: How to reduce alternator whine
- Message-ID: <1992Nov23.165447.19566@panix.com>
- Date: 23 Nov 92 16:54:47 GMT
- Organization: PANIX Public Access Unix & Internet, NYC
- Lines: 57
-
-
- Could someone please post a description of how to reduce or eliminate
- alternator whine coming through an amp using capacitors?
-
- I asked this once before, but didn't understand the replies.
- I rewired the amp using RCA shielded, gold-plug wires which run on
- the side of the car opposite the power wires (amp is trunk-mounted).
- The amp's power and ground are run directly to the battery, and the
- trigger wire comes from the head unit.
-
- The noise only starts when the car is started, and persists no matter
- if it's tape or radio playing. Also, the volume of the noise is
- consistent, does not increase with the music volume.
-
- So, I guess the question is: how will a capacitor help me?
- What size capacitor should I use?
- Where and how is it bridged into the power circuit?
-
- Rough diagram:
-
-
- + ***** _ spkr spkr
- | | \ /
- | | ..... \ RADIO / """""""" (RCA)
- | | . "
- | | . "
- | | . (trigger) "
- | | ......... "
- | - - - - - (-)AMP"""""""""
- - - - - - - - - - (+)AMP
- / \
- / \
- / \
- spkr spkr
-
- Pleaase post, as I've seen this question before, and I think others would
- benefit from this info as well.
-
- Equipment:
- Radio: Yamaha YCR-30
- Amp: Pyramid Gold 20f/40rear (only rear power is used)
- Front speakers: Nakamichi 3.5" SP35
- Rear Speakers: EPI LS-70X
-
- Car: 1986 VW Jetta GLI
-
- Thanks!
-
- | Dan |
-
- Dan Simoes Voice: 914.747.2900 x415
- Danix Consulting email: dans@panix.com or
- Yorktown Heights, NY dans@danix.uucp
- --
- Dan Simoes Voice: 914.747.2900 x415
- Danix Consulting email: dans@panix.com or
- Yorktown Heights, NY dans@danix.uucp
-