home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: rec.audio
- Path: sparky!uunet!peora!tarpit!tous!bilver!bill
- From: bill@bilver.uucp (Bill Vermillion)
- Subject: Re: Home-made audio rack - looking for suggestions
- Organization: W. J. Vermillion - Winter Park, FL
- Date: Wed, 9 Sep 1992 14:35:23 GMT
- Message-ID: <1992Sep9.143523.25123@bilver.uucp>
- References: <1992Sep5.194158.6118@macc.wisc.edu> <rolfe.715815450@sfu.ca> <5163@gold.gvg.tek.com>
- Lines: 64
-
- In article <5163@gold.gvg.tek.com> chrisc@gold.gvg.tek.com (Chris Christensen) writes:
- >In article <rolfe.715815450@sfu.ca> rolfe@fraser.sfu.ca
- >(Christopher John Rolfe) writes:
-
- >> I would suggest that you stay with an all-wood or other
- >>non-conducting material design. It will save you from potential
- >>ground loops. If metal frames are desirable for strength make sure to
- >>use those fat rubber washers to isolate the gear from the frame.
-
- >I just built another rack for my sound reinforcement system, that
- >makes five. I have never had any problems with ground loops from
- >mounting the equipment ( I use tapped rack rails).
-
- >My racks have anywhere from 4 to 15 bits of equipment mounted in
- >each rack. I have both balanced and unbalanced equipment and I don't
- >use ground lifters!
-
- >I recommend that you use tapped rack rails and rack any and all of the
- >equipment you have, then trouble shoot any ground loops.
-
-
- Chris - I am going counter from your recommendation on this
- one.
-
- In the studio ALL of our equipment, from power amps, to speaker
- EQ, to periphral gears was mounted in wooden racks.
-
- The power amps were mounted in a door that would open to give
- access to the back of the amps - very compact and it works.
-
- The compressors, EQ, digital effects, everything, were mounted
- in custom made wooden racks. We actually had the front of the
- cabinets curved to match the pivot of an engineers arm so that
- everyything was at the same distance from the engineer, but
- that is perhaps overkill - but it surely was nice. All
- engineers from out of town who used it loved it.
-
- All the mouting rails were hardwood. Doesn't take much to go a
- long way and therefore was not that expensive.
-
- This ensured that nothing touched. We also physically grounded
- all units with a single point ground from the chassis and
- removed the grounding connector on the 3-prong plug.
-
- Again this was studio work and no re-inforcement so we were
- going for the quietest environment possible.
-
- The ONLY hum problems we had were from a power tranformer
- located about 100 feet from the building that would induce hum
- into the playback head on the Stevens 821B. We would orient
- the machine for lowest noised pickup.
-
- Our philosophy was to avoid any potential ground loops before
- we started. Our designer/consultant was Bob Todrank of Valley
- Audio. His installations were really some of the finest you
- would want to see .It was actually TMI when we started and we were the
- first under the Valley Audio name. We sort of put them in
- business.
-
- --
- Bill Vermillion - bill@bilver.oau.org bill.vermillion@oau.org
- - bill@bilver.uucp
- - ..!{peora|ge-dab|tous|tarpit}!bilver!bill
-
-