These speakers perform really well considering their price plus they fit in the doors of my cavalier perfectly with the plastic baffles provided. They rattle my doors with only my deck for power. First time I bought Alpine and I must say that I am impressed. You can't go wrong with these.

Received the speakers quickly and installed them in a classic Ford Mach 1. Speakers sound pretty good, could use more base but I think that is because they're only being powered off a sony deck. Overall, very happy with my purchase.

pros
has great frequency response
has the lows, mids, and highs balanced
made from great materials
sounds better than any other brand of 4x6 speakers

Second day I had these speakers they started making popping noises. Both of them are in my front doors powered the head unit. Besides the popping noise they aren't very loud. I listen to a lot of dub and these speakers just don't handle it very well. My only advise would be spend a little more money and buy nicer Alpines.

These speakers are great for the price, I've had them for a few months now, I've had absolutely no problems with them, which Alpine is a great brand anyways, but if your looking for good sound for a decent price. I really recommend these.

I bought these for my 2000 Olds Alero and they were easy to install and sound great!

Sound OK, can't handle much power and distort rather easily, but sound great at lower power/volumes. Small speaker so what do you expect.

Bought the alpine sps-406 from Sonic. Shipping was very fast. I installed them the very next day. The speakers sounded okay but after 10 hrs of playing trying to break them in, i raised up the volume and they sounded horrible. My stock speakers sounded way better than these alpines. I don't understand the big hype on these speakers. I don't get why so many good reviews. I should have saved my money. Good thing i didn't buy them for 69.99 or i would have been mad. The only good thing about the speakers is the look and the design.

I installed these in the dash of my 02 blazer and even with 2 JLw6 12s in the back I can still hear my music with great clarity and they aren't even amplified. I would definitely suggest them to a friend!

Have owned these speakers for about 3 months now, and they are superb. Im glad I went with these. The clarity is unreal, and I only have them off of deck power. Cant wait to amp them up. They fit perfect in my 2003 Cavalier. Now I can listen to every kind of music and it sounds amazing. Sonic Electronix is the best too. Defiantly am and always will be a returning costumer.

The speakers themselves have a good sound quality, but they cant produce any bass whatsoever in my cavalier and aren't good with high volume. My 4x 10" Alpine Type-S in my trunk more than make up for it though. I should've gotten the Type-R's instead.

The sound quality is beastly. I am very pleased.

This speakers are very good for what you pay, I would recommend they sound crisp and clear and have good bass what else could you want.

I bought 2 pairs for my truck and they sound great i have them amped and they are great will refer them to friends.

These speakers are amazing!! Glad i got them. The clairty is unbelievable (with or w/o amp)! I bought them two days ago and just got them today i was suprised, very happy. I love sonic so much!!

These speakers are very awsome speakers of you want LOUD these are right up your alley! They only think I didn't like is they don't like alot of bass but if you have subs and you want that loud theatre sound here ya go!!

I installed the Alpine SPS-406 model speakers in my girlfriends truck and they sound great. The sound quality is awesome, there is a hint of bass, but a good overall sound. The speakers look nice and clean, and don't look just thrown into the spaces. I am pleased with this purchase and recommend them

These speakers are amaaaazzziiiinnggg. I love em they get really loud.

Gives put good bass for how small they are, they r nice and clear, and pretty loud for how small they are..

Thu sound great. Even at high volume. Bottom line.

Just bought them got in quick gonna hook them up this weekend.. I heard a pair in my buddy's truck and they sound so good. Thats the reason I bought them. Alpine has the best

sound better then any competition. alpine has the best car audio and sound reproduction to date. hands down...

great set of speakers. i bought these and they came rather quick. i installed these in my cavalier and they sound great. nothing to complain about.

Alpine always makes great products. I had these powered by 50wrms and they sounded great. Fit perfectly in the dash of my 1st gen S10.

Speakers put out good sound for what they are. I first had them just running off deck power and they sounded good. I then put a amp to them and it really helped them out. This is just another fine product product from Alpine. Totally worth the money.

I HAVE THESE CONNECTED TO AN ALPINE MRP-F450 AND THEY SOUND REAL GREAT. I RECOMMEND ALPINE THEY HAVE GREAT DEALS AND HAVE QUALITY PRODUCTS THANKS A LOT ALPINE AND SONIC!