Product Overview

Description

Key Features

  • 6.5” High-Sensitivity Midrange Speaker (102 dB Output)
  • 300W RMS / 600W Peak Power Handling
  • Neodymium Magnet for Lightweight, High Efficiency
  • 140 Hz–14 kHz Frequency Range for Clear Vocals
  • Aluminum Basket with High-Performance Voice Coil

Specifications

Nominal Diameter
6.5" / 165mm
Nominal Impedance
4 Ohms
RMS Power Handling
300W
MAX Power Handling
600W
Sensitivity (1w/1m)
102dB
Frequency Response
140Hz-14kHz
Recommended High-Pass Crossover
160Hz
Sold in Pair or Single
Single
Demodulating Rings
Copper Ring
Cone Shape
Curvilinear
Speaker Terminals
Push 16ga


Motor

Voice Coil Diameter
1.75" / 44.5mm
Voice Coil Former Material
Kapton
Winding Material
CCAW
Cone Material
Paper
Dust Cap Material
Paper
Surround Material
Cloth
Leads Connection Type
Spider Crossed
Basket Material
Aluminum
Basket Color/Finish
Black
Magnet Material
Neodymium
Magnet Weight
12.8 Oz


Thiele & Small Parameters

Equivalent Volume
5.27L / 0.186ft3
Excursion (one way)
0.75mm
Free Air Resonance
140Hz
Mechanical Factor
1.51
Electrical Factor
0.40
Total Factor
0.32
Mechanical Mass
7.13g
Mechanical Compliance
0.17mm/N
BL Factor
10.580
Voice Coil Inductance
0.53mH
Cone Area
147.41 Cm2
DC Resistance
3.8 Ohms


Measurement

Overall Diameter
6.85" / 174mm
Overall Depth
3.3" / 85mm
Front Mount Baffle Cutout
5.9" / 150mm
Mounting Depth
2.9" / 74.5mm
Motor Diameter
3.94" / 100mm

Product Overview


6.5” High-Sensitivity Professional Midrange Loudspeaker with Neodymium Magnet

Mid-Range Authority

The 6PRO600NMR-4 is a 6.5” high-sensitivity professional mid-range engineered for serious output. With 300W RMS and 600W MAX power handling at 4 ohms, this speaker delivers aggressive, commanding mids that stay clear at extreme volume.

Power and Precision
Featuring a neodymium motor structure, the 6PRO600NMR-4 achieves 102 dB sensitivity and a 140 Hz–14 kHz frequency response. Vocals and instruments project forward with intensity while maintaining tonal accuracy.

Competition Ready
An aluminum basket provides structural rigidity while keeping weight down. The cloth surround ensures durability, and its 2.9” mounting depth allows for versatile installation across a wide range of applications.

Built for Loud Systems
A 1.75” Kapton voice coil with CCAW winding improves thermal handling and efficiency. The integrated copper demodulating ring reduces distortion, keeping your mids clean and controlled even under heavy load.

Engineered for Extreme Output
Designed for high-output applications, the 6PRO600NMR-4 is built for enthusiasts who demand projection, efficiency, and reliability. Available in 6”, 8”, and 6x9” options to match your system’s needs.

Free shipping on orders $100+

FAQs

Please read our FAQs page to find out more.

RMS vs. MAX power — which number do I actually care about?

RMS is what your gear handles continuously; MAX is the short burst it can survive without complaint. Match your amplifier's RMS output to your speakers' RMS rating — sizing off the MAX number is how magic smoke gets released.

What does the IP65 rating on DS18 marine gear actually mean?

It's dust-tight and rated against low-pressure water jets from any direction — built for spray, rain, and the occasional wave over the bow, not for full submersion. If something's going somewhere it could sit underwater, that's a different conversation entirely.

How do I match an amplifier to my speakers without guessing?

Add up the RMS rating of everything the amp will power, and pick an amp whose RMS output (at your speakers' impedance — usually 4-ohm) lands close to that total. Undersized is thin sound; wildly oversized is a fast way to blow a voice coil.

Can I mix marine-grade gear into a standard car audio setup, or the reverse?

You can run marine-grade gear in a car — it's just over-built for that environment, no downside besides cost. Running non-weatherproof car audio gear in an open UTV or boat is the direction that causes problems.

What gauge wiring kit do I need?

It scales with your amp's power draw and the length of the run — DS18's OFC kits come in 4-gauge and 8-gauge for a reason. Undersized wiring on a high-draw system is a voltage-drop and heat problem waiting to happen; when in doubt, size up.

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