Helix PP7E Compact Sub

I am pleasantly surprised at the low end this enclosure with 2 small 6.5" speakers can produce as I expected less. Now, I like my music clean, clear and tight. Put some Eagles Hotel California on and I am in heaven. It is a vented enclosure and is not as tight as I would like it and a bit muffled but impressive none the less. I am only giving it 4 stars for this reason and the fact that Helix is not giving us USA customers the options it actually has in the EU. They have lots of enclosures to choose from and I would have certainly chose otherwise but since this was my ONLY option I had to give it a shot. I am hoping Crutchfield & Helix pays attention to these reviews and might stock more options in the future.

Pros: Incredibly easy to install and very well priced. Build quality is top notch and impressive. Not too bad for two 6.5 inch subwoofers.

Cons: Bass is not as tight and a bit muffled and they overstate the size of the subs (Crutchfield does a great job and gives you a heads up about this discrepancy).

- Did I notice an improvement in bass volume? Yes. However, the bass adjustment must still be above nominal to really hear it. - Did I notice a difference in range? Yes. However, you can tell that these small speakers have a very difficult time reaching below the 80dB range. As the pitch drops, so does the volume. this system automatically filters out sounds below 100dB and saves these lower notes for the sub. - Conclusion: All my other car audio systems are entirely pre-amped and typically cost 4 times the amount of this system. With that said, the ONLY reason to go this avenue is if you MUST save the stock stereo. Otherwise, you are much better off to purchase a new head unit, amps, and aftermarket subs and speakers. The sound will be clearer and the bass much more responsive. In addition, the separate bass speakers are barely enough to fill a small truck cab. If you installed the sub in a car trunk, you couldn't probably hear it whatsoever.

Pros: Ease of Installation, Size

Cons: Volume, Range

I love this sub, it offers clear sound and is so easy to install. I love the fact that the specialized cable keeps the power and audio neat and clean looking.

Pros: Easy to install, clear sound, sturdy box

Cons: Not enough amp selection due to the pro proprietary cable.

I would recommend this to a friend. I purchased the Helix PP50DSP and later added this subwoofer. I had a lot of problems with the PP50DSP, which I wrote about in my review of that item. This subwoofer provides solid punch to the low end.

Pros: Reasonable cost, great sound, and easy installation with the plug and play harness.

Cons: This product will not cause damage to your trunk from overpowering sound vibrations. People will not notice that your vehicle approaching from ten miles away. If you are looking for something like that, you will not be satisfied.