CU-6.5 | 6.5" 350 Watt RMS Subwoofer
SKU: 17999925538

CU-6.5 | 6.5" 350 Watt RMS Subwoofer

Sale price$112.50 Regular price$125.00
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

CU-6.5 | 6.5" 350 Watt RMS SubwooferThe Wolfram Audio Cu series are high performance, cost effective, competition grade subwoofers that stand out from the crowd in every aspect. The Cu series features a double stacked 180oz ferrite motor, 2" high temperature copper voice coil, and an advanced cooling design. Cu is the chemical symbol for Copper an inexpensive, yet precious metal. In other words, the Cu series is a fantastic option for daily bangin' without breaking the bank!

The Wolfram Audio Cu series are high performance, cost effective, competition grade subwoofers that stand out from the crowd in every aspect. The Cu series features a double stacked 180oz ferrite motor, 2" high temperature copper voice coil, and an advanced cooling design. 

Cu is the chemical symbol for Copper - an inexpensive, yet precious metal. In other words, the Cu series is a fantastic option for daily bangin' without breaking the bank!

Specifications:

  • Wolfram Audio Cu-6.5
  • Dual 2 or 4 Ohm Voice Coil Configuration
  • Peak Power : 700 Watts
  • RMS Power : 350 Watts
  • Competition Grade Pressed Paper Cone
  • Stitched High Roll Foam Surround
  • 180oz Stacked Magnet
  • 2 layer PC spider
  • 2" Copper Voice Coil
  • 8 Gauge Push Terminals

 

  • Sensitivity : 82 dB
  • Fs : 49.5 Hz
  • Re : 2.0 or 4.0 Ohms
  • Qms : 3
  • Qes :  0.36
  • Qts :  0.32
  • Nref :  0.1%
  • Bl :  17.5
  • Vas :  3.1 L
  • Mms :  90.7 gr
  • Xmax :  12mm (One-Way)

Enclosure Recommendations:

Sealed: 0.15 ft³ 

Ported: 0.2 - 0.4 ft³ Tuned 36hz-45hz

Mounting Depth: 5 1/8

Cutout: 5 7/8

Outer Diameter With Gasket: 7 1/4

Displacement: 0.06 ft³

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 17999925538

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.3 ★★★★★
Based on 225 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
T
Verified Purchase
Theredirishman
Grantham, US
★★★★★ 5
The Dog LOVES IT!
I bought this for my ex-wife's Pitbull. He is an aggressive chewer and usually destroys any toy I buy him. But not this one! The ball is small enough and pliable that it gives when he chomps on it. He loves this ball and seems to be his favorite toy. Thank you for making a product that he likes and can't destroy!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2024
S
Verified Purchase
Sean
Battle Creek, US
★★★★★ 5
My Golden Retriever’s favorite
We’ve owned lots of toys and balls. This specific version (in blue) has been her absolute favorite. She’s about 72lbs and chews on this thing regularly with no visible damage. We actually own about 6 of them because they have a tendency to go missing underneath furniture and in the yard. We have two of the orange colored ones but she doesn’t like those nearly as much which I assume is because the blue is easier to see in the grass. Other than that…They bounce really well and also whistle a little when you throw them hard enough. I hope they never stop making these.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 6, 2024
A
Verified Purchase
Alp acct
Massapequa, US
★★★★★ 4
doesn't whistle as loud as other chuckit balls I've seen, but a good ball.
makes some noise, but I've seen (and played with) others at the dog park that whistle much louder than the 1 I got. all Chuckit balls... so, just this one I'm betting. but it flys good and the dog loves to chase it. he chews it a fair bit as well and the ball has not taken much damage from him (lab mix) or others that have had a go at it. I'll likely buy another at some point ... just wish it was a little louder when flying.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 4, 2025
K
Verified Purchase
KA
Louisville, US
★★★★★ 5
Blue ball, my dog likes blue.
Just a ball right? Evidently not! My dog won’t chase an orange chuck it ball or the glow in the dark ball- only the blue one 🤷🏼‍♀️
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2025
B
Verified Purchase
Baker-s
Cuba, US
★★★★★ 3
I wanted a blue ball
It's great. It just wasn't blue.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 5, 2026

recommand products