Black Diamond Dia-M6.4B 6.5" Mids Speaker w/Bullet, 500W Peak, 4 Ohms — Big Jeff Online Inc
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Free shipping with delivery in 2-4 days See details
Free shipping with delivery in 2-4 days See details



Black Diamond Dia-M6.4B 6.5" Mids Speaker w/Bullet, 500W Peak, 4 Ohms OPEN BOX

Sold out
Original price $49.99
Original price $49.99 - Original price $49.99
Original price $49.99
Current price $31.99
$31.99 - $31.99
Current price $31.99
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  • Open-box items are not subject to returns.
  • They are sold "As Is".
  • All requests for returns will not be accepted.
  • Item has install damage, damage to center cone , dent outer rim, packaging is torn

Black Diamond Dia-M6.4B 6.5" Mids Speaker w/Bullet, 500W Peak, 4 Ohms OPEN BOX

This Listing Includes:

  • (1) OPEN BOX Black Diamond Dia-M6.4B 6.5" midrange speaker.

Open-box items are not subject to returns.
They are sold "As Is".
All requests for returns will not be accepted.

Introducing the Black Diamond Dia-M6.4B 6.5" Midrange Speaker with Bullet – your gateway to audio excellence. This dynamic midrange driver takes on the challenge of handling the most critical part of the audible sound spectrum, delivering exceptional sound quality for instrumental melodies and captivating vocals. With a powerful 500W Peak and 250W RMS at 4 Ohms, this midrange speaker ensures reliable and high-performance audio output for a broad range of applications.

Constructed with durability in mind, the Dia-M6.4B features a substantial 30oz magnet, a robust 1.5-inch high-strength voice coil, and quality materials, making it perfect for high-power applications. Upgrade your car audio system, enhance your home audio setup, or incorporate it into any audio project where clarity and power are paramount. The bullet design adds a dynamic visual element to complement its impressive performance.


  • Nominal Diameter: 6.5"

  • Nominal Impedance: 4 Ohms

  • RMS Power Handling: 250W

  • MAX Power Handling: 500W

  • Sensitivity (1w/1m): 94 dB

  • Frequency Response: 125Hz-12KHz

  • Recommended Hi Pass Crossover: 140 Hz

Motor Specifications:

  • Voice Coil Diameter: 1.5 / 38.6 mm

  • Voice Coil Former Material: Kapton

  • Winding Material: CCAW

  • Cone Material: Paper

  • Surround Material: Cloth

  • Basket Material: Steel

  • Magnet Material: Ferrite

  • Magnet Weight: 30 Oz

  • Displacement Volume: 0.32L

Thiele & Small Parameters:

  • Equivalent Volume: Vas 3.810L

  • Excursion: Xmax 8.2mm

  • Free Air Resonance: Fs 106Hz

  • Mechanical Factor: Qms 8.027

  • Electrical Factor: Qes 0.471

  • Total Factor: Qts 0.445

  • CD Resistance: Re 3.2 Ohms

Payment Information


We accept PayPal for all ebay orders. You can use your credit through PayPal as all major credit card are accepted by PayPal.

We accept PayPal for all international orders, your address must be verified with PayPal.

We are not responsible for any custom duties or brokerage fees that may apply for all international orders.

When you click on the Buy it Now button you are entering into a
contract whereby you agree to purchasing the item at the price listed.

If you want to ship your item to an alternate address please add
that address on your PayPal account and use the address as the default
or confirmed address to pay us through PayPal

With Free Same Business Day Shipping we work to get you your order Fast. 


All orders over $500 will require a signature for delivery.

All pre-selected shipping rates and methods are for customers with a
valid residential or commercial address within the Contiguous 48 United
States (PO Boxes address may require additional charges).

P.O. Boxes, APO/FPO addresses, Alaska, Hawaii, Puerto Rico, Guam,
U.S. Virgin Islands, Northern Mariana Islands, American Samoa, Canada,
and other countries may require additional shipping fees. Please contact
a member of our team for detailed shipping charges.

Shipping is available only to PayPal verified addresses. When making
payment please confirm your address has been verified with PayPal. Once
payment is made shipping address can not be changed/altered. Payments
made using an unverified PayPal address will be refunded and order will
be canceled.

We will not accept request to change shipping address once payment
has been made. Please confirm your shipping address is up-to-date and

Typical handling time for orders is 1-business day. We do our best
to ship every package with-in 1 business day of receiving a cleared
payment. In some circumstances additional time may be need, in which
case we will contact buyer.

Shipped orders that are returned by the shipping company due to an
insufficient address or an undeliverable address will be refunded less a
20% restocking fee.

If package is refused or marked undeliverable and returned
back to us by the carrier, you will need to pay the shipping cost in
full to have the package sent back to you or we can refund the money
minus the cost of shipping


If you have not received your package, but the tracking information shows that it was delivered,
please do the following within 36 hours of expected, stated delivery:


Verify the shipping address on the order is the address where you are looking for the package

Look for a notice of attempted delivery

Look around the delivery location for the package, or see if a neighbor has accepted the delivery

Be sure to double check your mailbox and other usual spots for package delivery


If you think that your package has been stolen, we will require a police report since this is now theft.
Once we have a police report on file for the stolen package, we will reship your order.

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