DS18 6.5" 300W RMS 4 Ohm Neodymium Sealed Back Mid-High Loudspeaker 6PRO600NSE-4

• HIGH-OUTPUT MID-HIGH LOUDSPEAKER: DS18 6PRO600NSE-4 6.5-inch sealed-back loudspeaker delivers 300 watts RMS and 600 watts maximum power handling at 4 ohms, making it ideal for compatible custom car audio and pro audio speaker systems.
• COMPACT NEODYMIUM MOTOR: Features an 8 oz neodymium magnet, 2-inch glass fiber voice coil former, CCAW winding, and copper demodulating ring for efficient mid-high frequency performance.
• 97DB SENSITIVITY AND WIDE FREQUENCY RANGE: Delivers strong vocal projection and upper-frequency reproduction with a 300Hz-18.6kHz frequency response and a manufacturer-recommended 480Hz high-pass crossover.
• SEALED-BACK IP65 DESIGN: Sealed-back construction helps isolate the speaker from shared enclosure air pressure, while IP65-rated protection, a water-resistant paper cone, and cloth surround support demanding installation environments.
• DURABLE ALUMINUM CONSTRUCTION: Rigid matte black aluminum basket, curvilinear cone, and 16 AWG push terminals provide reliable construction and convenient wiring. Sold individually and includes one 6.5-inch loudspeaker.

DS18 6.5" 300W RMS 4 Ohm Neodymium Sealed Back Mid-High Loudspeaker 6PRO600NSE-4

This Listing Includes:

• (1) DS18 Speaker 6PRO600NSE-4

Powerful vocals. Focused mid-high output. Compact neodymium performance.

The DS18 6PRO600NSE-4 brings professional mid-high frequency performance to high-output car audio and custom speaker systems. Built around a 6.5-inch sealed-back design with a neodymium motor, this loudspeaker is engineered for strong vocal projection, upper-midrange detail, and high-frequency reproduction without the bulk of a traditional ferrite magnet structure.

Rated at 300 watts RMS and 600 watts maximum power handling, the 6PRO600NSE-4 delivers the output needed for demanding multi-speaker audio builds. Its 97 dB sensitivity and 300Hz-18.6kHz frequency response make it a versatile choice for reproducing vocals, instruments, and upper-frequency content in systems designed for serious volume.

The sealed-back construction helps isolate the speaker from the air pressure generated inside shared enclosures or mounting cavities. This makes it particularly useful in custom door panels, speaker arrays, and installations where mid-high drivers share space with other audio components.

At the heart of the speaker is an 8 oz neodymium magnet paired with a 2-inch glass fiber voice coil former and CCAW winding. A copper demodulating ring helps reduce inductance-related distortion, supporting cleaner sound reproduction throughout its operating range.

Built for durability, the 6PRO600NSE-4 features an IP65 water-resistant rating, a curvilinear water-resistant paper cone, cloth surround, and rigid matte black aluminum basket. Push-style 16 AWG speaker terminals provide convenient wiring connections.

Whether you're building a high-output car audio system, adding dedicated mid-high speakers to a custom door panel, or designing a multi-speaker pro audio arrangement, the DS18 6PRO600NSE-4 delivers a combination of powerful output, compact construction, and focused frequency reproduction.

Features

• 300W RMS / 600W Max Power Handling: Built for demanding mid-high frequency audio applications.


• 6.5-Inch Sealed-Back Design: Helps isolate the speaker from rear air pressure and interference within shared mounting cavities.


• Neodymium Motor Structure: Features an 8 oz neodymium magnet for strong motor performance in a compact design.


• 97 dB Sensitivity: High-efficiency design produces strong acoustic output from compatible amplification.


• 300Hz-18.6kHz Frequency Response: Designed for vocals, instruments, upper-midrange detail, and high-frequency reproduction.


• 2-Inch Glass Fiber Voice Coil Former: Paired with CCAW winding material for heat-resistant construction and reliable performance.


• Copper Demodulating Ring: Helps manage inductance effects and reduce distortion.


• IP65 Water Resistance: Dust-tight construction with protection against water jets under specified test conditions.


• Water-Resistant Paper Cone: Curvilinear paper cone paired with a durable cloth surround.


• Aluminum Basket: Rigid, lightweight construction with a matte black finish.


• 16 AWG Push Terminals: Provides convenient speaker wire connections.


• 4-Ohm Impedance: Designed for compatible car audio and professional audio amplifier configurations.


• 480Hz Recommended High-Pass Crossover: Manufacturer-recommended crossover frequency to limit excessive low-frequency content.

Specifications:

• Model: 6PRO600NSE-4


• Speaker Size: 6.5"


• Speaker Type: Sealed-Back Mid-High Loudspeaker


• RMS Power: 300 Watts


• MAX Power: 600 Watts


• Impedance: 4 Ohms


• Frequency Response: 300Hz - 18.6kHz


• Sensitivity: 97 dB


• Recommended High-Pass Crossover: 480 Hz


• Voice Coil Size: 2" (50.6 mm)


• Voice Coil Former: Glass Fiber


• Voice Coil Winding: CCAW


• Magnet Type: Neodymium


• Magnet Weight: 8 oz


• Cone Material: Water-Resistant Paper


• Cone Shape: Curvilinear


• Dust Cap Material: Paper


• Surround Material: Cloth


• Basket Material: Aluminum


• Basket Color: Matte Black


• Demodulating Ring: Copper


• Terminals: 16 AWG Push Terminals


• Water Resistance Rating: IP65

Thiele & Small Parameters:

• Vas: 0.0997 L / 0.00352 ft


• Excursion (One Way): 0.05 mm


• Fs: 480 Hz


• Qms: 4.323


• Qes: 1.662


• Qts: 1.200


• Mms: 14.533 g


• Cms: 0.004 mm/N


• BL: 10.77


• Le: 0.034 mH


• Sd: 132.73 cm


• Re: 3.2 Ohms

Dimensions:

• Overall Diameter: 6.54" (166 mm)


• Overall Depth: 2.88" (73 mm)


• Mounting Cutout Diameter: 5.65" (143 mm)


• Mounting Depth: 2.6" (66 mm)


• Motor Diameter: 3.6" (92 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
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• American Express
• Discover
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Digital Wallets

• Amazon Pay
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International Payment Methods

• Bancontact
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Bank Transfers

• Zelle

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.

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