- HIGH POWER MIDRANGE PERFORMANCE: DS18 8OCT400-8 delivers 400W RMS / 800W MAX for loud, aggressive output built for high-energy car audio and pro sound systems.
- UNIQUE OCTAGON DESIGN: Custom 8-inch octagon frame stands out visually while allowing cleaner alignment and flexible installation in custom builds.
- LOUD & EFFICIENT OUTPUT: 98dB sensitivity ensures maximum volume with less power, delivering crisp vocals and strong midrange presence even at lower input levels.
- WIDE FREQUENCY RESPONSE: Plays from 63Hz–10KHz to cover a broad range of mids, giving you punchy low mids and clear, detailed highs in one driver.
- HEAVY-DUTY PRO BUILD: Features a 2” voice coil, aluminum basket, and 50 oz ferrite magnet for durability, heat resistance, and long-lasting performance.
- BUILT FOR CUSTOM & SPL SYSTEMS: Perfect for doors, pods, and demo builds where loud, clean mids are essential to cut through heavy bass.
DS18 8" 400 Watt RMS 8 Ohm Midrange Octagon Car Audio Loudspeaker 8OCT400-8
This Listing Includes
- (1) DS18 8" Loudspeaker 8OCT400-8
Bring bold output and a unique look to your system with the DS18 8OCT400-8 PRO Octagon Mid-Range Loudspeaker. Built for high-output installs that demand strong vocal presence and aggressive midrange response, this 8-inch octagon speaker combines 400 watts RMS, 800 watts MAX, and 98dB sensitivity for loud, clean performance.
Its distinctive octagonal frame is more than just a visual flex. It helps maximize mounting versatility while giving your build a custom, competition-inspired look. With a frequency response of 63Hz to 10KHz, the 8OCT400-8 is designed to reproduce a broad range of mids with clarity, punch, and detail. That means stronger vocals, sharper instruments, and a more alive front stage.
A durable aluminum basket, 2-inch voice coil, and 50 oz ferrite magnet give this speaker the motor strength and structure needed for demanding daily use. Whether you're building for loud street sound, demo energy, or a clean custom setup, the DS18 8OCT400-8 is ready to get rowdy.
Features:
- 400W RMS POWER: Loud, aggressive mids.
- 800W MAX: Push it hard.
- 98DB SENSITIVITY: Efficient, high output.
- OCTAGON DESIGN: Custom install look.
- 63HZâ10KHZ: Full midrange coverage.
- 2â VOICE COIL: Heat-resistant power.
- 50 OZ MAGNET: Tight response.
- ALUMINUM BASKET: Strong, lightweight.
- SPL READY: Built for loud systems.
Specifications:
- SKU: 8OCT400-8
- Nominal Diameter: 8" / 203 mm
- Nominal Impedance: 8 Ohms
- RMS Power Handling: 400 Watts
- Maximum Power Handling: 800 Watts
- Sensitivity (1w/1m): 98 dB
- Frequency Response: 63Hz-10KHz
- Recommended Hi Pass Crossover: 100 Hz
- Product Weight: 9.5 lbs
Motor
- Voice Coil Diameter: 2" / 50.8 mm
- Voice Coil Former Material: TIL
- Winding Material: CCAW
- Basket Material: Aluminum
- Magnet Weight: 50 Oz
Thiele & Small Parameters
- Vas: 39.8 L / 1.4 ft3
- Xmax: 4 mm
- Fs: 80 Hz
- Qms: 5.008
- Qes: 0.545
- Qts: 0.492
- Re: 5.73 Ohms
Dimensions:
- Overall Diameter: 8.1" / 208 mm
- Front Mount Baffle Cutout: 7.2" / 185 mm
- Mounting Depth: 3.7" / 95 mm
- Overall Depth: 4.1" / 105 mm
Accepted Payment Methods at Big Jeff Audio
At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:
Credit and Debit Cards
- Visa
- Mastercard
- American Express
- Discover
- Diners Club
Digital Wallets
- Amazon Pay
- Apple Pay
- Meta Pay (formerly Facebook Pay)
- Google Pay
- Shop Pay
- PayPal
International Payment Methods
Bank Transfers
Financing Options
We also offer financing options to make purchasing easier. Learn more about our financing options here.
- Klarna
- Affirm
- Sezzle
- Snap
- Acima
- Tiptop
If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.
Shipping Options and Delivery Time
Do You Offer Expedited Shipping?
Yes! At checkout, you can select from different shipping options:
- Standard Shipping: Free for orders over $100.
- Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.
How Long Does Delivery Take?
- Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
- Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.
What Happens If My Package Is Undeliverable?
If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.
Why Can’t I Track My Order?
If you're having trouble tracking your order:
- Make sure you’ve received the shipping confirmation email with the tracking number.
- Log into your account on our website and use the “Check Your Order Status” button.
- If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.
