Here's a short list of terms widely used in this forum section.

SQ - Sound Quality
SPL - Sound pressure level, think boom boom boom
SQL - Sound quality level, think loud clear music

HU - head unit
Eg CD/DVD/mp3 player

Tweeters - Normally the small speakers on the dash that goes chicka chicka chick

Midrange speakers - Normally 4 or 5in speakers that mostly do the vocal range

Midbass speakers - The 5 or 6in speakers in your door that mostly does kick bass

Subwoofer - 9-15in speaker in a box normally found in the boot. Does low frequencies.

Component speakers - Set of 2 tweeters, 2 midbass speakers, 2 crossovers
Eg

Coaxial speakers - Normally means tweeters and midbass built into one speaker, comes in pairs 4,5,6 and 6X9 in.
Eg

SVC - Single voice coil subwoofer, a regular uncomplicated subwoofer that only plays one impedance (normally 4ohm)

DVC - Dual voice coil subwoofer, normally can play 2 impedance (combination of 1,2,4 or 8ohm)

4ohm DVC - plays 2 or 8 ohms, needs an amp that can play 2 or 8ohms
2ohm DVC - plays 1 or 4 ohms, needs an amp that can play 1 or 4ohms

NOTE: Most amps play 4ohms for component speakers. 8ohm amp is rare. Good monoblock amps play 1,2 or 4 ohms.
DVC is NOT more powerful than SVC. You just get more options.
2ohm trades SQ for twice the power compared to 4 ohms. Likewise for 1 and 2 ohm.

Sealed enclosure - Sub in box with no holes.
Vented enclosure - Sub in box with a vent. Vent needs to be of a specific size for a specific sub.
Ready made enclosure - Not recommended.

Active subwoofer - Its actually a midbass speaker with a built in amp. You think it might give you sub bass in a small package under your seat, but no, you'll only get more midbass. To be avoided unless you really really really dun wanna put anything in your boot. Almost all ICErs who tried this at the beginning regretted, myself included. In fact I only know of one guy who kept using his.
Eg

Passive system - Uses a passive crossover, like the ones included in component speakers.
Pros - analogue sound, sounds real, "live"
Cons - tuning is done by changing components of the passive crossover, time consuming, trial and error style tuning, custom passives are expensive

Active system - No passive crossover. Crossover freqs are adjusted at the HU, electronic or HU crossover or processor.
Pros - clean, clear, easy to tune (done in 30mins)
Cons - digital sounding, not so "live" feeling

NOTE: active or passive is very subjective. You have to choose what you like. There is no one choice.

Semi active system - HU to electronic crossover to passive crossover to speakers.
You get the accuracy of the active system and the analogue feel of the passive system.

Pre-amp - Any device you put between the HU and amp. EQ, Processor, Electronic crossover, Line driver etc.
NOTE: At the accessory shop it means this:

We generally agree that you should avoid something like this unless it is made by a reputable company, Audiocontrol, PG, Clarion, JL etc

EQ - Equalizer, manually boosting or attenuating individual frequencies.
Eg

Electronic crossover - aka active or 3way crossover. Used in an active system to seperate specific range of freqs to specific speakers. Eg, you dun want the sub to do your vocals.
Eg

Processors - combination of EQ, electronic crossover and TA and a thousand other features in one box.
Eg

AWG - American wire gauge. A unit measurement for the thickness of a wire. Smaller is thicker.
Eg

This post has been edited by krayden: Feb 11 2013, 10:18 PM

dont need to reserve few post for future usage if needed? no worries for my post, i can get mods to remove once you reserve them (provided if you need la)

This post has been edited by Quazacolt: Aug 30 2012, 01:11 AM

I reckon i'll just edit the first post.

If you guys got anything to add just write it in the same format and tag your pix then post it here or pm me. I'll add it to the first.
Anyone drawing skill +1000, go draw a simple schematic for active and passive common system please.

Beats explaining to ppl what HU is all the time.

theres a limit on length/images you can put within a post.
that's why people split it to few posts for opening threads

and yeah, i guess your frustrations peaked out on explaining the same damn thing over and over huh?
thought my new thread would help, however it is rather evident not everyone read everything on the 1st post

or read at all, and just randomly create a new "recommend me prz thread" oTL

Can link back to this thread???? got some gambarajah.....

http://forum.lowyat.net/topic/342987

Din know there was a limit. Anyway i only planned to cover the basic stuff. Advance stuff have to pay tuition lol.

I actually rather have a one person one reco thread though. Easier to trace. The list of reco brands is really long and vague. I reckon thats why ppl still ask.

Looks good. I'll go copy it sometime this year. Thanks.

i agree on this if they are really going in depth into ICE and not just 1 kali rm1k or rm2k and done for life. that one, majority of previously recommendation/advises/answers also got ady if they bothered to use the search functions/do some read up

no amplifier range and type? pls enclose with a sample why dun use mono on a 4ohm subwoofer and why use mono on a 2 or 1 ohm sub....

you put info la, krayden can copy later lol

Wah, A,B,AB and D ah? All these technical things you do la sifu. Dun forget to explain how many ch for how many speakers that kinda thing. Why cannot use mono on 4ohm sub, DVC or SVC?

Hahaha..howie pls explain leh. I also wan to learn knowledge

i not good in typing......krayden do la....since he is TS..

Eh, i also want to learn some knowledge leh, since my next step is amplifier

hello my name is Yang, can I know what is trans wiring? thanks

Trans is a brand, local brand.

never heard of this term before. trans wiring.

Well done bro with u clear and details explanation !!!!

very nice post, tq for sharing, u might also wanna add about capacitors into it .. since all the basic things have been mentioned here im sure some people would wonder was is the NOS tube lookin thing is doing in the boot of a car ..

Thank you very much, this is very useful to me as i'm totally clueless about ICE..

This is very good