Today just installed DLS 226 speaker to improve the sound on my car, price rm470 in my place, kuantan. Is it expensive? They include Dynamat sound proof but only covered the area of the speakers. Planning to do sound proof on my 4 doors but they quote me rm500 for 2 doors only. I think its expensive compared to all others guys in automotive garage, but my place not many shops doing sound proof. So cant expect any cheaper.

this is a report or actually asking? because you probably just answered your own question.

in KL there are many choices as competition is stiff there. so, juz scout around ur area and find wat suits ur pocket best. rm500 for 2 doors using dynamat is quite reasonable at my place in Kota Kinabalu

Depends on what they wan to stuff in ur doors oni can justify the price.

ic, i just done my front 2 doors sound proof using STP Gold, used 3 pieces and the shop charged rm150 per piece, 3 pieces sufficient for 1 layer and partial 2nd layer on my 2 doors..