8" 250 Watt RMS 4-Ohm Shallow Mid-Range Bullet Loudspeaker DS18 PRO-X8.4BMSL

• SHALLOW MOUNT 8” MIDRANGE: Slim 2.71” mounting depth makes the DS18 PRO-X8.4BMSL perfect for doors, pods, and tight custom builds where standard 8” drivers won’t fit.
• LOUD HIGH OUTPUT PERFORMANCE: Handles 250W RMS / 500W MAX with 95dB sensitivity for strong volume and clarity across an 80Hz to 12kHz frequency range.
• INTEGRATED ALUMINUM BULLET: Built-in aluminum bullet design boosts high-frequency projection without needing separate tweeters, delivering aggressive attack and clean vocals.
• HEAVY DUTY MOTOR + STEEL BASKET: Steel basket keeps the structure rigid at high volume, powered by a 21 oz ferrite magnet for dependable performance.
• HEAT RESISTANT 1.5” VOICE COIL: 1.5” Kapton voice coil former with CCAW winding helps resist heat and distortion when pushed hard, recommended high-pass crossover 120Hz.

8" 250 Watt RMS 4-Ohm Shallow Mid-Range Bullet Loudspeaker DS18 PRO-X8.4BMSL

This Listing Includes:

• (1) 8" Shallow Mid-Range Bullet Loudspeaker

The DS18 PRO-X8.4BMSL is an 8 inch shallow mid-range bullet loudspeaker built to deliver strong output where full-depth speakers can’t fit. With a slim mounting depth of only 2.71 inches, it’s ideal for doors, pods, and tight custom installs that still demand loud, aggressive mid-range performance.

Rated at 250 watts RMS and 500 watts max power handling with 95dB sensitivity, this speaker plays loud and clear across an 80Hz to 12kHz frequency range. The integrated aluminum bullet boosts high frequency detail without requiring separate drivers, while the non-pressed cone supports clean vocals and strong attack.

This model is built with a steel basket for stability and durability at high volume, powered by a 21 oz ferrite magnet. A 1.5 inch Kapton voice coil former with CCAW winding helps resist heat and distortion when pushed hard. Recommended high-pass crossover is 120Hz. Grill is not included.

Specifications:

• Nominal Diameter: 8" (203mm)


• Nominal Impedance: 4 Ohms


• RMS Power Handling: 250W


• Max Power Handling: 500W


• Sensitivity (1W/1M): 95dB


• Frequency Response: 80Hz to 12kHz


• Recommended HI Pass Crossover: 120Hz


• Sold As: Single


• Grill Included: No

Motor / Materials:

• Voice Coil Diameter: 1.5" (38.1mm)


• Voice Coil Former Material: Kapton


• Winding Material: CCAW


• Cone Material: Non-Pressed


• Bullet Material: Aluminum


• Bullet Color / Finish: Glossy Red


• Surround Material: Cloth


• Basket Material: Steel


• Basket Finish / Color: Glossy Red


• Magnet Material: Ferrite


• Magnet Weight: 21 oz

Thiele & Small Parameters:

• Equivalent Volume (Vas): 13.2L (0.468ft)


• Excursion (one way): 1.5mm


• Free Air Resonance (Fs): 100Hz


• Mechanical Factor (Qms): 9.769


• Electrical Factor (Qes): 0.733


• Total Factor (Qts): 0.682


• Mechanical Mass (Mms): 11.703g


• Mechanical Compliance (Cms): 0.204mm/N


• BL Factor (BL): 5.74


• Voice Coil Inductance (Le): 0.214mH


• Cone Area (Sd): 213.8cm


• DC Resistance (Re): 3.3 Ohms

Dimensions:

• Overall Diameter: 8.23" (209mm)


• Overall Depth: 2.96" (75mm)


• Front Mount Baffle Cutout: 7" (180mm)


• Mounting Depth: 2.71" (69mm)


• Motor Diameter: 4.3" (110mm)

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
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International Payment Methods

• Bancontact
• iDEAL

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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