Watch a video review from one of our experts

Helix PP7E Compact Sub

Vented enclosure with two 7" subwoofers

Item #: 975PP7E

In Stock

4 Reviews | 1 question - 1 answer

Your price: $249.99 Earn up to 250 Rewards points

Add to Cart Free Shipping Lifetime Tech Support

+ Add to wishlist + Email me alerts for this product

Open Box: $224.99 Scratch & Dent: $212.49

View all associated offers

1.888.955.6000

Email

Chat

We don't check this item for fit or compatibility.

Bass made for the Plug and Play system

Helix makes the PP7E subwoofer to deliver great bass when you upgrade your vehicle's factory sound system with a PP50DSP or PP52DSP processor and amplifier. The PP7E rocks with twin 7" subs in a vented enclosure that's compact enough to fit in most vehicles, yet strong enough to broadcast some impressive bass.

Proprietary cable included

The PP7E comes with a 15.75-foot PP-SC4 cable that connects the sub to your PP50DSP or PP52DSP processor. You'll need the cable to connect this enclosure, since its two subs contain four separate voice coils, each powered by its own amp channel in the processor.

Helix Plug and Play upgrade system

The Helix PP7E subwoofer works with the PP50DSP
processor and a vehicle-specific harness (not shown).

Product Highlights:

  • subwoofer for Helix plug and Play system upgrade
  • two 7" DVC 2-ohm subwoofers
  • vented enclosure
  • includes 15.75-foot (4.8 m.) PP-SC4 cable for connection to PP50DSP
  • power handling: up to 200 watts RMS (400 watts peak power)
  • sensitivity: 90 dB
  • 10-11/16" x 12-1/4" x 11-7/16"
  • warranty: 2 years
  • Our 60-day money-back guarantee

Hands-on research

What's in the box?

  • Ported hatchback style enclosure with two subwoofers installed
  • 16' PP-SC 4 cable
  • 4 Steel grille rods

Product Research

Features

Overview: The PP 7E subwoofer is designed as an easy addition to the HELIX PP50 DSP plug and play digital signal processor/amplifier. The included PP-SC 4 cable connects the proprietary input terminal on the PP 7E to the subwoofer port on the PP50 DSP. The PP50 DSP powers the PP 7E subwoofer and is required for its use.

Driver Size: HELIX describes the size of the two subwoofers as 7" on their web site and on a sticker on the back of the enclosure. On the packing box they are described as 6-1/2". The speakers' frame diameter is similar to 6-3/4" car speakers.

Impedance: Both subwoofers have dual 2Ω voice coils. Each of the four voice coils is wired separately to the proprietary Molex input terminal.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Helix PP7E Compact Sub Reviews

Average Customer Review:

4 reviews
Review this product
Great Gear Giveaway

Submit a review and then enter to win a $500 rewards card

(0)
(0)
(0)
(0)
(0)

Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
  Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left

Surprising Low End

Written By nightraven, Tucson, AZ. on Thursday, September 04, 2014

Crutchfield Customer Review (What's this?)

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).

Insufficient Bass Range or Volume

Written By ahthurungnone, Jackson, MI on Tuesday, November 26, 2013

Crutchfield Customer Review (What's this?)

- 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

Great Product

Written By SteveG, Colville, WA on Monday, September 30, 2013

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.

Great sound!

Written By Rick, Barre, Vermont on Tuesday, May 14, 2013

Crutchfield Customer Review (What's this?)

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.

Get everything you’ll need to enjoy your new Helix PP7E Compact Sub

Install Bay IB35400

Install Bay IB35400

Premium door panel and trim tool

Item #: 12035400

$15.99
Add to Cart
Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR6NGL

(53)

$24.99
Add to Cart
Pro.Fit Wire Worm

Pro.Fit Wire Worm

Installation tool helps route wiring through tight spaces

Item #: 042DM4533

(34)

$12.99
Add to Cart
Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 3 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR3NGL

(183)

$11.99
Add to Cart
Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR6LNGL

(2)

$29.99
Add to Cart
Pro.Fit Trim Panel Tool

Pro.Fit Trim Panel Tool

Remove your vehicle's trim panels without damage

Item #: 042DM4022

(88)

S&G Tool Aid 87650

S&G Tool Aid 87650

Door Trim and Panel Removal Tool

Item #: 18187650

(71)

Box Brackets

Box Brackets

Item #: 125B702KIT

(5)

Questions & Answers Ask the community. Share your knowledge.

1 question already asked

You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your factory system. They will be able to pull up your vehicle and see if this will integrate. If it does not, then they will also be able to discuss other options with you. [ Krissy  Mar 31, 2014 ]  Staff

Searches related to the Helix PP7E Compact Sub Vented enclosure with two 7" subwoofers