Next will be Speakers.
As I stated before, this is my OPINION Please do research heavily before you buy a certain product.
I am sure I have missed alot of brands, so if you think something should be represented here. Post it.
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Speakers: Every person has different listening tastes. Unfortuntely most of the stuff listed here you can't exactly go and audition somewhere. And if you could it would most likely be in a sound board and will sound alot different in an in-car environment anyways.
I always rec. wiring active if you have adequate processing, and amplification(one channel of power for each individual driver). BUT it's much easier to set up a passive component set. So results can differ.
If you have an amp that has flexible crossovers that include a bandpass then you can do the crossovers at the amp. Using a headunit with a 3 way crossover would be preffered as you will have more fine tuning capabiltiy. You can also use an electronic active crossover+eq with great results.
Some people prefer to get a component system that has passive crossovers. This can be good for the person that want's to run a 4 channel amp to power the front components and the sub(s) You can always go active afterwards.
Some of these options will vary and sound completely different. Some in the same group might sound better than another.
The most important thing is finding something that will work good in your application. Then installing it properly and tuning it properly. Plan on using an amplifier(s) for the speakers. Try to have at least 40-50 watts RMS per driver. If possible more. Alot of these speakers can handle a good amount of power. Some don't need that much. Just be sure to properly set the gains.
I plan on using about 150 watts rms to my mids, and about 75 watts rms to the tweeters.
Some if not most of these speakers are from home audio manufacturers but can be used in the car with great results. And in most cases these are some of the companys that make speakers for alot of the car audio offerings.
I know I am missing alot, but some good stuff to look into:
Audiophile
Seas Lotus Reference
Seas Excel
Rainbow
Focal Utopia, K2P
Morel
Dynaudio
Hiquphon tweeters
MB Quart QSD
Scan Speak
Alpine F1 Status (similar to Scan Speak Revelators, but tweaked for Alpine)
Arc ACS
DLS Iridium, UR
Beyma
Image Dynamics HLCD's
RS Audio
AVI
LCY
ACCUTON
Fountek
CDT HD, Eurosports and 07 model lineup.
Boston Z6
Diamond D9
Quality Passive Component systems Keep in mind, all these can be wired active.
MB Quart QSD
MB Quart PCE216 6.5" set Or PCE210 if you need 4" components. (also can be a nice 3 way active set with midbass addon)
JL XR
Alpine Type-X SPX-177R
Image Dynamics Chameleons
CDT EF, HD, they make slim mounting depth variants.
Elemental Designs eDi6500s eDi6000s are ok for the money.
Phoenix Gold TI 6 Elite (Morel)
Boston Pro Series
ADS
Exile Audio Components are pretty good for the money, not an audiophile speaker, but definitely good quality. VERY shallow mounting depth if you need it, and very lighweight too if you are building a race car and need evey weight of ounce shaved, but still want some tunes.
Diamond Hex
DIY Components
Mids: 7"
Seas CA18RNX, G18RNX - 55 each
DAYTON RS180S-8 - 33 each (deep driver though check clearance) Nice mid
Peerless HDS Exclusive
Adire Audio Extremis 6.8 99.00 each
For more choices and quick reviews, go here.
http://ldsg.snippets.org/
and of course
www.diymobileaudio.com
Phaze Audio/PPI Tubedriver mids (check ebay)
Seas Lotus/Excel $ but awesome.
Tweeters:
LPG 25NFA (silk) 26NA(Aluminum) The aluminum is best suited for people that like sharper highs. These are 37 each.
Dayton Neo domes- 5.00 each
Dayton RS Tweeters(large outer diameter though)
Seas 27TBFC/G (H1212) (large outer diameter) 30.00 each
Vifa XT
MB Quart QTC25
Focal TN-51, TN-52, Beryllium, TLR
Hiquphon OW2 (99 each though)
Midrange:
Domes:
-Usher 9845 3" Textile
LPG 51AT(Aluminum), LPG 50FA(textile) 64 each
DLS UR2.5(-+75 bucks each), Iridium 3
DAYTON DC50F-8 2" 28.00 each
Cones:
Seas Excel W15
MB Quart QSD213
Vifa 10BGS aka MG10
Vifa M10
Audax HM100Z0
Vifa PL
Eton 4-300 hex
Remeber to check mounting depths, and plan on using a 1/2" to 3/4" baffle to mount the speaker to the door. That will give you some extra mounting depth. Also check clearance from the speaker to the door panel.
Most importantly, do as much research you can before deciding to buy. These are just certain things to get you looking in the right direction. There's alot of other good stuff out there, and there are 10X more bad stuff out there. Research is the key.