Whats the best alpine 6x9? dds-r69g,sps-6939,spr or others

get the alpine ktp445 mini amp ,it should be compatible (check your manual for your HU it will say ) its a plug and play install and you will hear a great improvement as I did and still got mine with the alpine cda 117 .

It may be a bad voice coil. It would make that type noise. If the cone isn't cracked its the coil.

I'm using that Alpine right now for 2-12" subs and I have compared it to 6 or 7 other amps this month and most were 4 channel 150Watt/Channel Bridged to 300Watts x 2 and found the Alpine to be superior in both sound quality and loudness. The Alpine has also not turned off even with full volume for hours at a time, Very solid amp I was very surprised due to it's size!

Well the solution all depends on the car you want to put them into.

you will need to contact alpine

pls rate

they are only 4 ohm speakers so just put the front speakers on channels 1&2 or a&b and the rear on 3&4 or c&d since you are using a 4 channel amp thats what they are designed for

I would strongly recommend that you get a 5 channel amp that puts out 75watts rms per channel that will deliver between 200-300 watts to the sub channel. I use planet audio amps myself and they run strong all day every day-maybe you could look at a planet audio vrx 600.5(5-channel) it throws 100w x4 and 200 or 300 to the subs depending on the resistance of the sub. Good luck

planet audio vrx-600.5 it runs 100watts rms to all four corners and will give you 300 wats rms to a 2 ohm sub all day long.

from what i can find it says if its the back door speakers then the factorys are 6 3/4.u could either make brackets or buy sum.hope that helps

get in touch with a pro! that lot needs to be fitted properly
good luck