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Car Audio
DS18
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DS18 8OCT400-8 Octagonal 8" Mid-Bass Loudspeaker 400 Watts Rms 8-Ohm (each)

Sale price $137.99 Regular price $147.99
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Key features

  • Speaker size: 8″
  • RMS power per speaker: 400 W
  • Speaker impedance: 8.0 ohms
  • Frequency response: 63 Hz–10 kHz
  • Sensitivity (1 W/1 m): 98 dB
  • Voice-coil diameter: 2 inches


Description

Product Overview

Bring high-output mid-bass and midrange detail to a multi-way car-audio system with the DS18 8OCT400-8 octagonal 8-inch loudspeaker. Its 8-ohm design handles 400 watts RMS, while a 98 dB sensitivity rating supports strong output from the power you provide.

Key Features & Benefits

  • Octagonal 8-inch design: The shape is designed to provide a wider frequency response than traditional round drivers.
  • 400 watts RMS power handling: The rating helps you match the speaker to your system’s amplifier.
  • 98 dB sensitivity: Rated at 1W/1m, it supports high output with less amplification.
  • 63 Hz–10 kHz frequency response: The range covers bass territory and detailed midrange frequencies.
  • Aluminum basket: The basket material is specified for this driver’s construction.
  • 100 Hz recommended high-pass crossover: Use this recommendation when planning integration in a multi-way system.

Technical Specifications

Specification Value
Brand DS18
Model 8OCT400-8 PRO
Speaker type 8-inch octagonal mid-range loudspeaker
Nominal impedance 8 ohms
RMS power handling 400 watts
Maximum power handling 800 watts
Sensitivity 98 dB (1W/1m)
Frequency response 63 Hz – 10 kHz
Recommended high-pass crossover 100 Hz
Voice coil diameter 2" (50.8 mm)
Former material TIL
Winding material CCAW
Basket material Aluminum
Magnet weight 50 oz
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 Ω
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)
Weight 9.5 lbs

Why Choose This Product?

The 8OCT400-8 is designed for high-output midrange roles in multi-way car-audio systems. Its octagonal geometry and stated 63 Hz–10 kHz response give you a distinctive driver option when planning sound across a broad frequency range.

With 400 watts RMS handling and 98 dB sensitivity, this DS18 speaker combines substantial power handling with an efficient output rating. Its 8-ohm impedance is an important consideration when matching it to your amplifier and other system components.

Installation & Compatibility Notes

Check your mounting location against the 7.2" (185 mm) front-mount cutout, 3.7" (95 mm) mounting depth, and 8.1" (208 mm) overall diameter. Allow for the 4.1" (105 mm) overall depth when checking clearance.

Match the speaker’s 8-ohm nominal impedance and 400-watt RMS rating to your system. The recommended high-pass crossover is 100 Hz; confirm crossover and system settings for your installation.

Frequently Asked Questions

Is the 400-watt rating RMS or maximum?

400 watts is the RMS power handling. Maximum power handling is 800 watts.

What impedance should I account for?

The nominal impedance is 8 ohms. Consider it when matching the speaker with your amplifier and system configuration.

What crossover point does DS18 recommend?

The recommended high-pass crossover is 100 Hz.

Will it fit my speaker opening?

Compare your available space with the 7.2" (185 mm) front-mount cutout, 8.1" (208 mm) overall diameter, and mounting-depth measurements above.

What frequency range does this speaker cover?

Its specified frequency response is 63 Hz–10 kHz.

Explore More

Shop DS18 products at 12 Volt Outlet, and explore our DS18 brand profile.

Need an amplifier to run these speakers?

Compare car-audio amplifiers by channel count. Ratings shown at 4 Ω. Check your speakers’ impedance and RMS power before choosing an amplifier.

2-Channel Amplifiers

50–125W RMS per channel at 4 Ω

4-Channel Amplifiers

50–125W RMS per channel at 4 Ω

6-Channel Amplifiers

Actual 4 Ω ratings shown for each amplifier

8-Channel Amplifiers

Actual 4 Ω ratings shown for each amplifier

Product Details