4 speakers vs 8 speakers

[WolfWings]

Originally Posted by IllusionX

speakers in the back are pointless.

on the serious side... doubling only makes +3db. so it's really pointless to have more than 1 pair of speakers. at least, in the front.

UNLESS every DB you get accounts for what you are trying to do....

Some of us prefer only driving speakers in the back, because it lets us locationally position the music in the rear and hold conversations in the front seat easilly. Not everyone goes for raw volume, some go for clarity or specifically 'relegating' the music to background instead of foreground even if we run it relatively loud. Between my enjoyment of music as 'background' noise, and the fact I usually have a CB or other two-way conversation going in the front seat, I actually have good reason to pump most of my music through my rear speakers.

As for paired-speakers, yes and no as to if it's worth it. Two speakers that combined have the same cone-area as one larger speaker will generally move more air (thus, more dB) from the same electrical power, but that requires aligning them and positioning them relatively precisely so their combined activity has constructive instead of destructive interference. There's expired patents out there describing the math, but it's questionable if it could be even done in a car's interior short of a full-sized van.

For the Yaris? Just get one good pair of speakers wherever you tune the majority of your music to (front or rear), don't worry about the other pair of speakers, and get a bunch of sound dampening installed. Removing all the road noise and wind noise will do a lot more to improve things than upgrading to a bajillion speakers.