POLK AUDIO DB402 DB+ Series 4" Coaxial Speakers with Marine Certification, Black

Using these speakers as an upgrade in a Spark 40 desktop guitar amplifier. Definite improvement in balancing out the audio spectrum versus the stock speaker performance. Perfect fitment and easy to install. Includes all wiring and mounting accessories needed for a variety of applications. Familiar with Polk products for a number of years, trust their build quality and faithful musical reproduction. Pricing represents an unbeatable value - an additional positive note for choosing these. The Polk DB402 DB+ speakers are certainly another fine model of Polk's exemplary offerings!

I used these to replace the 3.5 inch speakers in the rear pillars of my 2018 Ford Explorer. I wound up cutting the plastic basket off of the factory speakers, then trimming and sanding down the plastic gasket of the 3.5 inch to mount these in the factory space. They sound excellent, being fed by an amp that puts out about 75 watts to each speaker. The fit was very tight, but I wanted to keep with Polk Audio since I have swapped out all of the door speakers and tweeters with Polk already. Polk Audio does not currently make a 3.5 inch speaker so I took my chances with these and I made it work out.

I bought these to add to the saddle bags of my cruiser and I have nothing but great things to say. These speakers sound amazing and were incredibly easy to mount and wire. Once they were installed they make some noise. I pretty much have surround sound even when I am riding. They are strongly built and made to last. There is no cracking sounds or issues when the stereo is turned all the way up. They have a nice deep sound and the bass is clear as crystal. If you were considering buying these puppies, go ahead and get them.

They're pretty good speakers, but you need to put a bass choke on them, or else you're going to blow them up because they can't handle the bass.

Speakers sound very good hooked up in my ammo crate speaker build. They are on the higher end of what I would have liked to spend, however they are definitely worth it compared to cheaper speakers that I have bought before. They look great and the waterproof has worked well for me so far. Would recommend, even if they are slightly more than similar speakers.

Out of the box, the speakers were impressively made with premium materials. They felt premium and when I tried them, they sounded beautiful. I have tried the other top brands across the board but these are special. Polk is my new go to speakers in the future.

I'm very impressed, I just wanted to install a few cheap speakers to listen to podcasts/maybe light music but these far outshined my expectations. I'm not saying it's a complete 'system' but these sound really good, decent bass, and they output insane volume for the size. I'm very impressed.

I was hoping to replace my 4" Kickers with these speakers but the screw holes didn't align and I didn't want to drill new holes in the fiber glass. Speakers also don't come with a gasket to put behind the speakers to create a better seal when fixing.I don't know how they sound performance wise. I didn't hook them up.