From: kmr4@po.CWRU.edu (Keith M Ryan)
Newsgroups: rec.audio.car
Subject: FAQ status
Date: 11 Nov 92 21:36:28 GMT
Organization: Case Western Reserve University
NNTP-Posting-Host: b64746.student.cwru.edu


Okay, status report for the FAQ.

Yesterday, I spent about 4 hours hammering out the orginazation and made the 
beginnings of a table of contents. I've written up most of the introductory 
parts, addressed some terminology and types of components- such as what a 
parametric equalizer is, etc-. I've left out most of the very simple 
terminology, as I expect some knowledge, e.g. what the difference between a 
cassette and a CD :-) I've also worked out a basic overview, what tools one 
will need, protection, etc. 
	I've begun working out instructions for common, simple 
installations- that is, replacing the head unit, simple speaker upgrades, 
etc. I'm only addressing the common methods, the procedures for 95% of the 
cars. Every car is different, and there may be small differences in the 
installation, but that is why we have scotch manuals, etc. I've also 
explained briefly the differences between the types of speakers, imaging, 
and the pro's and con's of various types, etc.

	Here are the status's for the more involved topics:

Passive Crossovers: I have some fairly good explanations of the theory and 
	construction of simple 1st and 2nd order crossovers which I'll 
	incorporate into the FAQ. 

Active Crossovers: I've got the workings for the section on selecting the 
	crossover points, discussing the pro's and con's of the different 
	slopes, etc.

Equalizers: I've started on the basis of explaining how to use an equalizer, 
	how one should set it, besides picking 'nice' looking curves :-)

Gain Settings: I've a past post which addresses setting the correct gains on 
	pre-amps, crossover, amps, etc.

Noise elimination: I've got a good post on tracking down system noise, e.g. 
	isolating which component is causing the problem.

4th order enclosures: A great post by Brian Gentry on bandpass enclosures.
	I have a printed copy, but can not find it on any of my disks, does
	anyone still have a copy, so I do not have to type it up? :-)
	It is titled: An Introduction to Design of 4th Order Bandpass 
	Enclosures.

Programs: I have a post explaining the various enclosure programs, but I have
	lost the ftp sit it is at, can anyone re-post it for me, to include 
	in the FAQ?

Power: I have an old post of mine discussing power needs and db's and the 
	likes. I'll combine it with two other past posts which I have.

Alarms: I can incorporate the recent alarm post easily.

Sound absorbtion: I have the basic workings for a section on the advantages
	of sound proofing a car, dyna-mat, etc.

What I need:

	As I do not have any of my reference sources with me at college, 
( I live in FL, but go to college in OH, need I say more? ) I would feel 
uncomfortable on making a detailed explanation on accoustical suspension and 
vented designs. I want the hard equations, the explicate formulas, including 
port designs, etc. I only know some of the generalized ones off hand, if you 
know what I mean. If anyone has any good past posts, would anyone please 
pass them along? Failing that, would anyone care to volunteer? Or, if anyone 
can provide parts of them, I'll be much appreciated.

	Another topic I'll like help is on advanced fabrication. I do not 
have much experience with fabricating door panels with fiberglass, etc. 

	Electrical upgrades: Anyone want to volunteer on helping with 
alternator upgrades, etc. I'm not too knowledgable with the physics 
behind isolators, etc. My experience has been basically limited to 
replacing/upgrading the batteries and capacitors. I had the alternator 
upgrade done by a professional, as I know virtually nothing about the 
car mechanics! ( well, I can change the tires... )	

	I've also need a good section explaining all the various 'tricks' to 
stop noise, beyond ground loop problems and wire placement.

	And, anything else someone can think of!

	Thanks...
Newsgroups: rec.audio.car