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tDames | Staff 10.2K Views
Feb 11, 2026 9:36 PM

Black Diamond DIA-P1000X1D Amplifier + 2x DS18 GEN-X124D 12” Subwoofer Bundle

$278

$435

36% off
+ Free Shippingat eBay
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Deal Details
DS18 Car Audio via eBay has Black Diamond DIA-P1000X1D Amplifier + 2x DS18 GEN-X124D 12" Subwoofer Bundle on sale for $347.96 - 20% with coupon code LONGWKND20 at checkout = $278.37. Shipping is free.

Thanks to Deal Hunter tDames for sharing this deal.

Details:
  • Bundle contents: Black Diamond DIA-P1000X1D 1000W RMS Class D monoblock amplifier + DS18 GEN-X124D 12" DVC subwoofer (450W RMS)
  • Power output: 1000W RMS from amp + 450W RMS from sub for deep, punchy, room-shaking bass
  • Amplifier features: 1-ohm stable, compact design fits most vehicles, aluminum body for heat resistance
  • Subwoofer features: Dual 4-ohm voice coils for flexible wiring options; steel basket for durability
  • Performance: Delivers clean, powerful low-end with clarity at high volumes; ideal for upgrading stock systems or building custom setups
  • Setup note: Requires enclosure/box and wiring kit (not included) to complete bass system

Editor's Notes

Written by SaltyOne | Staff
  • At the time of this posting, our research indicates that this is $158.48 lower than the next best comparable online prices starting from $436.85.
  • Offer valid for a limited time only / while supplies last.

Original Post

Written by tDames | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
DS18 Car Audio via eBay has Black Diamond DIA-P1000X1D Amplifier + 2x DS18 GEN-X124D 12" Subwoofer Bundle on sale for $347.96 - 20% with coupon code LONGWKND20 at checkout = $278.37. Shipping is free.

Thanks to Deal Hunter tDames for sharing this deal.

Details:
  • Bundle contents: Black Diamond DIA-P1000X1D 1000W RMS Class D monoblock amplifier + DS18 GEN-X124D 12" DVC subwoofer (450W RMS)
  • Power output: 1000W RMS from amp + 450W RMS from sub for deep, punchy, room-shaking bass
  • Amplifier features: 1-ohm stable, compact design fits most vehicles, aluminum body for heat resistance
  • Subwoofer features: Dual 4-ohm voice coils for flexible wiring options; steel basket for durability
  • Performance: Delivers clean, powerful low-end with clarity at high volumes; ideal for upgrading stock systems or building custom setups
  • Setup note: Requires enclosure/box and wiring kit (not included) to complete bass system

Editor's Notes

Written by SaltyOne | Staff
  • At the time of this posting, our research indicates that this is $158.48 lower than the next best comparable online prices starting from $436.85.
  • Offer valid for a limited time only / while supplies last.

Original Post

Written by tDames | Staff

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Top Comments

Community Reviews

This DS18 Black Diamond kit is a budget car audio bass upgrade that can hit hard when paired correctly. The 1000 watt RMS amp is a good match for the two 4 ohm dual voice coil subs, and wiring everything in parallel can get the amp to its rated 1 ohm mono output. A proper subwoofer box and quality oxygen free copper wiring matter, with ported enclosures favoring boomy bass and sealed boxes giving tighter sound. Factory head units may need a line out converter such as an LC2i because some are detuned and do not send enough bass. It is a solid setup if the install is done right.

  • people installing a 2-sub car audio bass upgrade who want to match the amp's rated power because the community notes you need a 1-ohm mono load (everything in parallel) to get the amp's full output with dual 4-ohm voice coils.

  • drivers who are ready to build the right enclosure and wiring for the sound they want because commenters specifically say to invest in an appropriate subwoofer box (ported for boomy/thunderous vs sealed for tight/melodic) and quality, correctly gauged wiring instead of just throwing subs in the trunk.

  • Subaru owners planning a custom MDF "s-box" build because one commenter says these subs would fit the vibe in homemade MDF boxes and could significantly increase the perceived value of the car.

  • people adding aftermarket subs to a detuned/limited factory head unit because the community suggests using a line-out converter like the AudioControl LC2i to restore bass when the factory system won't provide enough low-end signal.

  • installers who want concrete cable guidance for the included bass kit because commenters call out 12-gauge cable for 500W RMS at 2 ohms and recommend oxygen-free copper over aluminum.

  • buyers who don't want to think about enclosure matching (ported vs sealed vs bandpass) because the community highlights that the box type strongly affects the bass character and asks whether you need a bandpass/enclosure plus a line-out converter to pair properly.

  • people trying to reuse a stock/detuned head unit as the only source for the subs because one commenter reports there was no bass to amplify until they changed the entire system.

Common Questions (4)

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20 Comments

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Feb 13, 2026 7:14 PM
206 Comments
Joined Dec 2017
Bnutz8Feb 13, 2026 7:14 PM
206 Comments
Thanks OP. Just ordered one for my oldest son's first "system". We are gonna install it together! So exicted!
Pro
Feb 14, 2026 11:16 AM
2.1K Comments
Joined Jul 2019
WoodSlayR
Pro
Feb 14, 2026 11:16 AM
2.1K Comments
Quote from vabruno View quoted comment :
What the heck is black diamond?
Black Diamond is made by DS18
https://ds18.com/collections/black-diamond
Feb 15, 2026 4:47 AM
336 Comments
Joined Nov 2025
ForHassanFeb 15, 2026 4:47 AM
336 Comments
Quote from S_Klass View quoted comment :
It's been years since I dabbled in car audio but 1000W RMS amp will drive (total) 900W RMS subwoofers in parallel (2 ohm). These should be considered a good match. But for god's sake please invest in a subwoofer box and quality wires of appropriate gauge. Don't just throw these into your trunk. Ported box for boomy/thunderous bass or sealed box (non-ported) for tight/melodic bass.
Thanks! Do you know what gauge cables would be good for these? Any amazon recommendation?
Feb 15, 2026 5:33 AM
1.5K Comments
Joined Nov 2010
BigDealYoFeb 15, 2026 5:33 AM
1.5K Comments
Need a bandpass box or enclosure deal to pair up along with best line out converter.
Feb 26, 2026 9:25 PM
1.3K Comments
Joined May 2013
S_KlassFeb 26, 2026 9:25 PM
1.3K Comments
Quote from ForHassan View quoted comment :
Thanks! Do you know what gauge cables would be good for these? Any amazon recommendation?
Sorry for the late reply but 12 gauge is a good match for 500W RMS at 2 ohms. Oxygen-Free Copper cable is preferred over any Aluminum cable. It doesn't have to be fancy.

ASIN B079VJXN1Z is probably decent.

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