Customer Ratings & Reviews

These subs POUND!

I had 2 15" Massive Audio GTX154 and switched to 2 of these 12" SUMMOXLs and they hit so freaking hard! My whole Jeep Patriot is flexing, almost afraid that the back window is going to blow out. Have them running on a 2000 watt Hifonics Brutus amp wired to 1 ohm in a ported Atrend SPL Bass box. You will not be disappointed in these subs.

By Anonymous on September 12, 2018 Verified purchase

Very very very pleased

These subs have a physical and auditorial presence that far exceeds any sub I have ever owned. I play them at volume 10 because everything in the car starts shaking at that point and they look good. Quality subs

By 8terry13 on February 23, 2018 Verified purchase

Summo Thunder

I bought two of these and have been using them for the last couple of days. I'm running them on 800 watts rms wired at 4ohms and these subs are loud.

By Canetrane on February 23, 2018 Verified purchase

Awesome!!!

Whewww where do I start I have four of these running them on a pure audio 3K and all I'mma say is you get what you pay for once you experience these subs it ain't no going back to anything else ???????????? wish I can add more stars

Great product

I want to start by saying that the shipping was faster then I expected it to be and the product is “AWESOME” I am barley breaking them in and then sound amazing..... I was I little skeptical bout massive audio because I never use them but I am now a fan and want to see wat else’s there products are capable of.... I had 2 12 NVX that hit really good and hard but it was time for some new and louder and I found it.....I would definitely recommend this sub to anyone and I have not yet had any cons to say just over all a great subwoofer. Just want to thank sonic electronix for always having the best deals and fast shipping...

By James on August 31, 2020 Verified purchase

Awesome!!!

Whewww where do I start I have four of these running them on a pure audio 3K and all I'mma say is you get what you pay for once you experience these subs it ain't no going back to anything else ???????????? wish I can add more stars