Sundown Audio Combo Pair of U-Series V.2 12" DVC Subs w/Marts Digital Amp 5000w

• Elevate your car audio with Sundown Audio U-Series V.2 12" Subwoofer.
• Premier "standard suspension" woofer series with improved performance.
• Black Aluminum 3" voice coil for superior heat dissipation.
• Heavy-duty cast baskets, stitched double-XL tinsel leads for durability.
• Optimized for small ported or bandpass enclosures, delivering powerful bass.
• Experience 5000 Watts at 1 Ohm - with the Marts Digital MP-5000-1 Monoblock Amplifier.
• Class D amplifier design - redefining audio quality for an immersive and high-performance sound experience.
• Global audio excellence - Marts Digital amplifiers transcend boundaries, offering an audio adventure from Brazil to the world.

Sundown Audio Combo Pair of U-Series V.2 12" DVC Subs w/Marts Digital Amp 5000w

This listing includes:

• (1) Marts Digital Monoblock Amplifier 5000 Watts 1-Ohm 1-Channel Class-D MXB-5000-1


• (2) Sundown Audio U-Series V.2 12" Subwoofers

Features Amplifier:

• 5000W Monoblock Class D Amplifier.


• Xtreme Bass Amplifier series from Brazil.


• Bass Knob for personalized control.


• User-friendly with included User Manual.


• Compact form factor with power and style.

Specifications Amplifier:

• RMS Power @ 1 Ohm 12.6V: 5000W RMS.


• RMS Power @ 2 Ohm 12.6V: 3050W RMS.


• RMS Power @ 1 Ohm 14.4V: 5150W RMS.


• RMS Power @ 1 Ohm 14.4V: 3100W RMS.


• Supply Voltage: 9.5-16V.


• Frequency Response: 15Hz - 180Hz.


• Low Pass Crossover: 50Hz - 180 Hz.


• SubSonic Crossover: 15Hz - 40 Hz.


• Bass Boost: 0 to 12dB (35Hz - 70Hz).


• Signal to Noise Ratio: 95dB.


• Harmonic Distortion: 1% THD.


• Input Sensitivity: 0.2V.


• High Level Input: 6V.


• Dimensions: 16.5 x 11 x 4.5 Inch.

Dimensions Amplifier:

• 16.5 x 11 x 4.5 Inch.

Features speakers:

• Black Aluminum 3" voice coil for superior heat dissipation.


• Heavy-duty cast baskets with custom-tooled design.


• Stitched double-XL tinsel leads for durability.


• Optimized for small ported or bandpass enclosures.


• Innovative features like rear drilled gap-venting and vented frame spacer ring.

Specifications speakers:

• Model: U-Series 12" Subwoofer.


• Peak Power: 1750W.


• Voice Coil: Dual 4 Ohm.


• RE (Ohms): 3.8407 / 6.0577.


• FS (Hz): 41.3260 / 41.9087.


• VAS (L): 14.7612 / 14.7535.


• Qes: 0.4862 / 0.5870.


• Qms: 4.7454 / 4.9022.


• Qts: 0.4410 / 0.5242.


• Le (mH): 3.1858 / 4.3694.


• BL (NA): 27.2694 / 31.1265.


• Mms (Grams): 358.6438 / 356.5462.


• Cms (uM/N): 40.4709 / 40.4498.


• Sens (dB @ 1w/1m): 85.1980 / 84.4191.

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
• Apple Pay
• Meta Pay (formerly Facebook Pay)
• Google Pay
• Shop Pay
• PayPal

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.

Why Can’t I Track My Order?

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• Make sure you’ve received the shipping confirmation email with the tracking number.
• Log into your account on our website and use the “Check Your Order Status” button.
• If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.