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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 11, 2026 11:43 PM
2.1K Comments
Joined Nov 2006
MxChrisFeb 11, 2026 11:43 PM
2.1K Comments
Always happy to see some car audio gear posted.
1
Feb 12, 2026 3:59 AM
456 Comments
Joined Oct 2011
ThatCoolDudeFeb 12, 2026 3:59 AM
456 Comments
+1 for audio deals.
Feb 12, 2026 4:45 AM
336 Comments
Joined Nov 2025
ForHassanFeb 12, 2026 4:45 AM
336 Comments
Does anyone know if the amp here will power both 12" subs? Description on eBay says supports one.
Feb 12, 2026 5:34 AM
1.3K Comments
Joined May 2013
S_KlassFeb 12, 2026 5:34 AM
1.3K Comments

Our community has rated this post as helpful. If you agree, why not thank

Quote from ForHassan View quoted comment :
Does anyone know if the amp here will power both 12" subs? Description on eBay says supports one.
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.
2
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1
Pro
Feb 12, 2026 7:09 AM
2.1K Comments
Joined Jul 2019
WoodSlayR
Pro
Feb 12, 2026 7:09 AM
2.1K Comments

Our community has rated this post as helpful. If you agree, why not thank

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.
You want a 1ohm mono load on that amp to get it's rated power. That means everything in parallel. Both 4ohm coils on each subs in parallel, which will yield 2ohms per sub, then both subs together in parallel to get a final 1 ohm mono load that the amp makes full rated power at.
Last edited by WoodSlayR February 11, 2026 at 11:17 PM.
5
Feb 12, 2026 10:13 AM
401 Comments
Joined Sep 2006
woodpaqFeb 12, 2026 10:13 AM
401 Comments
Kinda miss the good Ole days. So quiet on the roads now. My rear view mirror hasn't even been tapped, much less shaken in years. I guess the auto manufacturers really made things way less user friendly and upgradeable. You tamper with near anything, the hamsters start protesting inside the engine.
1
5
Feb 12, 2026 1:26 PM
1.4K Comments
Joined Aug 2015
oceanoneFeb 12, 2026 1:26 PM
1.4K Comments
Quote from woodpaq View quoted comment :
Kinda miss the good Ole days. So quiet on the roads now. My rear view mirror hasn't even been tapped, much less shaken in years. I guess the auto manufacturers really made things way less user friendly and upgradeable. You tamper with near anything, the hamsters start protesting inside the engine.
yeah with all the super large touchscreens with build in radio its hard to add external AMPs and the MANUFACTURER STEALERSHIPs aren't helpful either they have no clue at all about this.

good old early 2000s with alpine head unit and eq to get REAL deep bass in the car , today is just screaming load mids and highs but no feel from the music anymore

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Feb 12, 2026 1:31 PM
603 Comments
Joined Feb 2011
tsigwingFeb 12, 2026 1:31 PM
603 Comments
WHAT?
2
1
Feb 12, 2026 1:35 PM
467 Comments
Joined Feb 2006
sdflyerFeb 12, 2026 1:35 PM
467 Comments
I have an s-box Subaru for which these in some homemade mdf boxes would totally fit the vibe. These would just about double the value of the car, not even joking.
Feb 12, 2026 2:01 PM
83 Comments
Joined Sep 2009
bigddy263Feb 12, 2026 2:01 PM
83 Comments
Quote from woodpaq View quoted comment :
Kinda miss the good Ole days. So quiet on the roads now. My rear view mirror hasn't even been tapped, much less shaken in years. I guess the auto manufacturers really made things way less user friendly and upgradeable. You tamper with near anything, the hamsters start protesting inside the engine.
I know what you mean, I had an amp and speakers laying around, thought I would put them in my car. Ended up changing the entire system. My stock head unit was detuned so that it wouldn't hurt the stock speakers. When I tried to use it as a source for my subs, there was no bass to amplify.
Feb 12, 2026 5:20 PM
96 Comments
Joined Jul 2015
computermd.msFeb 12, 2026 5:20 PM
96 Comments
Quote from tsigwing View quoted comment :
what?
did you say turn it up?
Feb 12, 2026 7:01 PM
1.1K Comments
Joined Feb 2012
yakkyFeb 12, 2026 7:01 PM
1.1K Comments
Quote from bigddy263 View quoted comment :
I know what you mean, I had an amp and speakers laying around, thought I would put them in my car. Ended up changing the entire system. My stock head unit was detuned so that it wouldn't hurt the stock speakers. When I tried to use it as a source for my subs, there was no bass to amplify.
Audio Control LC2i will put that bass back. But I agree with you guys, the factory systems these days suuuuck for adding aftermarket gear. Subs are easy. When you start playing with the rest of the system, you get really loud turn signal sounds and other fun things (since alerts are now played through your radio). Also another yelling at the clouds, a lot of today's subs are just noise makers, not much in the line of good SQ subs, at least on the low end of prices... and then no more stereo shops where you can actually listen to stuff.
Feb 12, 2026 7:48 PM
24 Comments
Joined Nov 2019
OrangeWealth4715Feb 12, 2026 7:48 PM
24 Comments
Black Diamond subs and amp any good?
Feb 13, 2026 3:16 AM
37 Comments
Joined Sep 2023
SplendidSofa831Feb 13, 2026 3:16 AM
37 Comments
Not sure where you live but it seems like 50% of society near Ventura likes to drive with their windows down and their music basing as hard as it possibly can so everybody could look at them. I did the same exact thing when I was young, but now I'm 57 and I'm like Clint eastwood, get off my lawn. Better yet shut that crap up
1

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Feb 13, 2026 3:21 AM
502 Comments
Joined Feb 2008
vabrunoFeb 13, 2026 3:21 AM
502 Comments
What the heck is black diamond?

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