Ported Enclosures - Reflex Enclosure for 18Sound 21LW1400

Reflex Enclosure for 18Sound 21LW1400

Printed From: Speakerplans.com
Category: Plans
Forum Name: Ported Enclosures
Forum Description: Post all your reflex and bandpass and 'other' boxes with holes in stuff here...
URL: https://forum.speakerplans.com/forum_posts.asp?TID=109069
Printed Date: 26 March 2026 at 5:30pm
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com

Topic: Reflex Enclosure for 18Sound 21LW1400

Posted By: PHATpedro
Subject: Reflex Enclosure for 18Sound 21LW1400
Date Posted: 10 May 2025 at 6:26am

Hi I am new here and I am searching the internet for a rexlex enclosure for the 18Sound 21LW1400 driver, as I am building my first rig.

I will buy two of those.
I want to build two single driver enclosures

This system will play mostly Dub, OG Dubstep, Jungle
I would like to tune this enclosure to 30hz or lower if that makes sense, but i think 18sound recommends 30hz.

Why so backwards?
I live in Mexico and I have very limited driver availablity, basically this is the only 21" driver i can get here where I am. I do not need to play brutally loud but I need to play deep. We have reggae soundsystems here that play incredibly loud, but that is not what i want.

Here is the driver
https://www.eighteen.it/en/products/lf-driver/21-0/8/21LW1400 - https://www.eighteensound.it/en/products/lf-driver/21-0/8/21LW1400

Resonance Frequency 28hz
Frequency Range 24-2000hz
Xmax 9,5mm
Recommended Volume 300L

Hopefully you can help me.
Kind regards

Replies:

Posted By: FOO
Date Posted: 10 May 2025 at 7:13am

If you are up to it, i can recommend this design.

https://www.eighteensound.it/media/W1siZiIsIjIwMjQvMDkvMjMvMTBfMTRfNDNfMTcxXzEyMUJQX3YyLnBkZiJdXQ" rel="nofollow - https://www.eighteensound.it/media/W1siZiIsIjIwMjQvMDkvMjMvMTBfMTRfNDNfMTcxXzEyMUJQX3YyLnBkZiJdXQ

It's not super easy to build, but it do sound good.

Heard them a couple of times, 2 subs each side with 2 EV RX212/75 on top each side.

Posted By: PHATpedro
Date Posted: 10 May 2025 at 7:45pm

I thank you for your response.
Unfortunately it is not what I am looking for.

I have discovered it on their webpage and it seems they used to have a single reflex 21" plan. I found several links iirc but theyre all dead. I would use it if it was still around.

I ofc. also like the ease of built for a reflex cab.
Thanks a lot.