
Key Features:
- Vintage-inspired OLD SKOOL GREY design from Down4Sound and Car Audio's OG days
- Built-in cooling fan for enhanced performance and longevity
- Plexi black plate and NEW ALUMINUM Bass Knob with voltage and temperature meter
- Standard 1-year manufacturer defects warranty
- Optional half-ohm warranty for added protection during .5 ohm hook-up
Testing Results by Big D Wiz: Independent testing by Big D Wiz confirms the Grey JP8's true power output. Here are the verified RMS power ratings at 14.4 volts:
- 4 OHM: 511 Watts RMS
- 2 OHM: 892 Watts RMS
- 1 OHM: 1256 Watts RMS
Our Testing Ratings (Worst Case Power Output):
- RMS power, 1 ohm: 700W x 1 @ 12v | 850W x 1 @ 14.4v
- RMS power, 2 ohms: 500W x 1 @ 12v | 650W x 1 @ 14.4v
- RMS power, 4 ohms: 490W x 1 @ 12v
- RMS power, 2 ohm Linked: 2300W x 1 @ 14.4v
Tuning Specifications:
- Frequency Response: 10 Hz - 270 Hz
- Low Pass Filter: 35 Hz - 250 Hz
- Subsonic Filter: 10 Hz - 50 Hz
- Bass Boost: 0 - 9 dB
- Input sensitivity: 6V - 0.2V
- Signal to Noise Ratio: 97dB
- T.H.D @ 4 ohm: less than 0.1%
- Single unit fuse rating: 120A
- Strapped fuse rating: 220A
- Operating voltage: 9 to 16 Volts
- Length x Width x Height (inches): 11.81" x 7.4" x 2.24"
- Damping Factor: 100
- Class: D - DIGITAL
Sound Check: Your Full Tilt Questions, Answered
Can you install it for me?
Can you install it for me?
Yes. Book an install slot when you reserve the product and drop your vehicle off at our Alamo shop—system tuning is always included.
Do you offer same-day pickup?
Do you offer same-day pickup?
Order by 3 PM, choose Local Pickup – Alamo, and we’ll have your gear curb-side that afternoon. Holds are good for 24 hours.
Is financing available?
Is financing available?
Absolutely. In-store we offer Shop Pay Installments (4-pay, 10 %)