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Dayton Audio UM18-22 18" Ultimax DVC Subwoofer 2 ohms Per Coil = $288

$288.00
$363.99
+27 Deal Score
15,512 Views
On sale for $288. Not the best price ever on these, but worth mentioning. With additional coupons you can get another $25 off, just google it. Usual price is $324.


https://www.parts-express.com/day...l--295-518


​The 15" version is also discounted to $199.
https://www.parts-express.com/day...l--295-514
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$288.00
$363.99

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Joined Aug 2014
L5: Journeyman
> bubble2 530 Posts
90 Reputation
Boss93
07-10-2020 at 10:17 AM.
07-10-2020 at 10:17 AM.
How hard is this to diy for first timers
Reply
Joined Mar 2014
L5: Journeyman
> bubble2 617 Posts
50 Reputation
ncs999us
07-10-2020 at 10:17 AM.
07-10-2020 at 10:17 AM.
Where can I find other items kits to build subwoofer out of this?what else I would need
Reply
Joined Dec 2009
Frog Wrangler
> bubble2 5,409 Posts
1,173 Reputation
swechsler
07-10-2020 at 10:20 AM.
07-10-2020 at 10:20 AM.
Quote from ncs999us :
Where can I find other items kits to build subwoofer out of this?what else I would need
Parts Express sells a couple of precut boxes, you assemble and paint (or otherwise finish). Here's one [parts-express.com], says out of stock, though.
Reply
Joined Dec 2009
Frog Wrangler
> bubble2 5,409 Posts
1,173 Reputation
swechsler
07-10-2020 at 10:20 AM.
07-10-2020 at 10:20 AM.
Quote from Boss93 :
How hard is this to diy for first timers
How hard is what? Building a box from scratch or building a precut one? How are your woodworking skills?
2
Reply
Joined Dec 2009
Frog Wrangler
> bubble2 5,409 Posts
1,173 Reputation
swechsler
07-10-2020 at 10:21 AM.
07-10-2020 at 10:21 AM.
@FairNarwhal8056, what's the best price you've seen for these? How often does it happen?
1
Reply
Joined Jul 2010
L7: Teacher
> bubble2 2,929 Posts
612 Reputation
Masejoer
07-10-2020 at 10:36 AM.
07-10-2020 at 10:36 AM.
Great subs. I have two of these, powered by rack mount amps. Flat down to 6Hz with acoustic coupling and room gain. It took over a decade to realize that strong subs capable of being driven to under 10Hz was what I was missing at home for years after I got out of my 'car audio' phase as a young adult. Smooth (response) and deep tuned bass was missing in my life.

While they have two 2500W@4ohm Crown amps powering them (limited by the 120V circuit...), I've never been able to push more than 120W input combined without them getting too loud or rattling too much of the house, depending on frequency played.

Price wise, these have been more expensive for years. I believe they were around $180 with free shipping in 2015. I haven't seen low prices for years though.
1
Reply
Joined Sep 2014
L3: Novice
> bubble2 160 Posts
37 Reputation
Cha4me
07-10-2020 at 10:44 AM.
07-10-2020 at 10:44 AM.
deleted
1
4
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Last edited by Cha4me July 10, 2020 at 02:31 PM.

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Joined Sep 2014
L3: Novice
> bubble2 160 Posts
37 Reputation
Cha4me
07-10-2020 at 10:45 AM.
07-10-2020 at 10:45 AM.
Quote from Boss93 :
How hard is this to diy for first timers

If you get the pre cut mdf knock down box, it's pretty easy. All you need is wood glue and like 6 bar clamps. Other than that you need to drill a hole for a speakon connector or binding post. You can then finish the cabinet of your choice.
Reply
Joined Dec 2014
L2: Beginner
> bubble2 184 Posts
14 Reputation
sollyemmy
07-10-2020 at 10:46 AM.
07-10-2020 at 10:46 AM.
Quote from swechsler :
How hard is what? Building a box from scratch or building a precut one? How are your woodworking skills?

If I get a precut box, what else do I need to finish a subwoofer to use in a home theater? My wood working skills include owning a circular saw and a hand drill which are collecting dust as they are not used in a while.

I am willing to learn and make a DIY subwoofer which I can be proud of
Reply
Joined Sep 2014
L3: Novice
> bubble2 160 Posts
37 Reputation
Cha4me
07-10-2020 at 10:48 AM.
07-10-2020 at 10:48 AM.
Quote from sollyemmy :
If I get a precut box, what else do I need to finish a subwoofer to use in a home theater? My wood working skills include owning a circular saw and a hand drill which are collecting dust as they are not used in a while.

I am willing to learn and make a DIY subwoofer which I can be proud of

For the pre cut MDF, all that is needed is wood glue and bar clamps. Then you need an external amp to power it. If you wanted to do a plate amp built into the cabinet, you would probably need a jigsaw to cut out th hole.
1
Reply
Joined Dec 2005
L3: Novice
> bubble2 127 Posts
42 Reputation
slhtonz
07-10-2020 at 10:56 AM.
07-10-2020 at 10:56 AM.
Quote from Masejoer :
Great subs. I have two of these, powered by rack mount amps. Flat down to 6Hz with acoustic coupling and room gain. It took over a decade to realize that strong subs capable of being driven to under 10Hz was what I was missing at home for years after I got out of my 'car audio' phase as a young adult. Smooth (response) and deep tuned bass was missing in my life.

While they have two 2500W@4ohm Crown amps powering them (limited by the 120V circuit...), I've never been able to push more than 120W input combined without them getting too loud or rattling too much of the house, depending on frequency played.

Price wise, these have been more expensive for years. I believe they were around $180 with free shipping in 2015. I haven't seen low prices for years though.

What do you have them enclosed in to get down so low?
Reply
Joined Sep 2015
L2: Beginner
> bubble2 90 Posts
42 Reputation
Whore
07-10-2020 at 10:58 AM.
07-10-2020 at 10:58 AM.
Quote from Boss93 :
How hard is this to diy for first timers

Don't listen to any of these people saying that it's easy. If you're going to buy a nice subwoofer and then put it in a pre-cut box you're basically throwing away your money.

To get the correct performance out of a subwoofer the box has to be built to manufacturer specifications and tune with a correct port diameter and depth to get the correct Hrz response.

Its only easy for a first time DIY if your proficient at following detailed instructions and somewhat math proficient.
12
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Joined Oct 2010
L2: Beginner
> bubble2 73 Posts
18 Reputation
bubbaray00
07-10-2020 at 10:58 AM.
07-10-2020 at 10:58 AM.
I bought two of these about a year ago. This was one of the most satisfying projects I have ever worked on.
Reply
Joined Jan 2011
L2: Beginner
> bubble2 32 Posts
18 Reputation
davidc81
07-10-2020 at 11:03 AM.
07-10-2020 at 11:03 AM.
I have 2 ultimax 18's, in gsg mini Marty flat packs, running off of an NX6000d, and they are loud and play super low.
1
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