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Dmytro_B 4.3K Views
Aug 15, 2026 9:37 PM

Crown CDi 4000 Two-Channel, 1200-Watt @ 4Ω, 70V/140V Power Amplifier $1399

$1,399

$3,451

59% off
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Pro
Aug 16, 2026 4:11 AM
770 Comments
Joined Nov 2018
KevinR6981
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Aug 16, 2026 4:11 AM
770 Comments
Great deal imho
1
Aug 16, 2026 6:57 AM
324 Comments
Joined Aug 2026
FuschiaKite153Aug 16, 2026 6:57 AM
324 Comments
Everyone should own at least two.
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Pro
Aug 16, 2026 3:10 PM
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Joined Sep 2016
vid1900
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Aug 16, 2026 3:10 PM
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Our community has rated this post as helpful. If you agree, why not thank

This is a 70v system for multi speaker building installations.

It's not for home subwoofer use, so make sure you are buying this for the right application
2
1
Aug 17, 2026 1:21 AM
48 Comments
Joined Mar 2017
brettsullivan3Aug 17, 2026 1:21 AM
48 Comments
Quote from vid1900 View quoted comment :
This is a 70v system for multi speaker building installations.

It's not for home subwoofer use, so make sure you are buying this for the right application
can use it in any setting.. yes it is oriented toward contractor installs but i've seen 1000's in houses powering subs or something.
1
Pro
Aug 17, 2026 1:28 AM
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Joined Sep 2016
vid1900
Pro
Aug 17, 2026 1:28 AM
3.5K Comments
Quote from brettsullivan3 View quoted comment :
can use it in any setting.. yes it is oriented toward contractor installs but i've seen 1000's in houses powering subs or something.
What subwoofer driver has a 70 volt transformer on it?

70v transformers roll off the bass frequencies, so I can't even imagine how a sub would be made to run on a 70v system.
1
Aug 18, 2026 10:15 PM
30 Comments
Joined Feb 2020
TealPen595Aug 18, 2026 10:15 PM
30 Comments
Quote from vid1900 View quoted comment :
What subwoofer driver has a 70 volt transformer on it?

70v transformers roll off the bass frequencies, so I can't even imagine how a sub would be made to run on a 70v system.
Just a quick pull from google.

Pros and Cons
  • Pros:
    • Massive power delivery capable of driving demanding passive subwoofers.
    • Integrated DSP removes the need for an external crossover/processor.
    • Rugged 2U rack-mount design built for reliability. [1, 2]
  • Cons:
    • Uses Phoenix-style (Euroblock) inputs and barrier strip/screw terminal outputs rather than standard RCA or Speakon connectors, requiring custom adapter cables.
    • Fan noise can be loud for quiet residential home theater environments. [1, 2]
Pro
Aug 19, 2026 1:17 AM
3.5K Comments
Joined Sep 2016
vid1900
Pro
Aug 19, 2026 1:17 AM
3.5K Comments
Quote from TealPen595 View quoted comment :
Just a quick pull from google.





    • Uses Phoenix-style (Euroblock) inputs and barrier strip/screw terminal outputs rather than standard RCA or Speakon connectors, requiring custom adapter cables.
Exactly.

So not only are you going to pay hundreds of dollars more for the 70v feature that you are not going to use, but Joe Homeowner is not going to own any Phoenix Ferrules, or the specialized Phoenix Crimpers to make up the custom cables.

Using non-standard or hardwire connectors is great in a bar, office building or school, where you don't want the janitor to try and "fix" anything. Or in a bar, when you don't want anyone plugging into the house sound system.

But it's a needless complication in a home when you are troubleshooting or swapping out equipment.

If you don't need the 70v, there are plenty of other Crown amps for less cash.

If you do want to hook up a bunch of 70v speakers in a chain, this is a good amp for that!
1

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