NEW G Sub Build for Lowrider 18
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=60225
Printed Date: 27 March 2026 at 6:53am
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: NEW G Sub Build for Lowrider 18
Posted By: DiscernAudio
Subject: NEW G Sub Build for Lowrider 18
Date Posted: 07 December 2011 at 3:35pm
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This is box is for 2x Peavey Lowrider 18 Vb=13.5 cu ft Fb=35 hz F3=34.73 Luckily my dad and I have a cabinet/woodworking shop, so the build went smoothly. No baltic birch sold in my area. (I hunted for weeks). The ply used is 9-ply 18 mm Sandeply by Endesa (Equador) from Home Depot. I had my doubts at first with it, but it has been GREAT only 2 SMALL voids found in 4 sheets. Cuts and routes nicely and only about $45/sheet(4x8)                        More pics to follow. |
Replies:
Posted By: RealitySound
Date Posted: 08 December 2011 at 12:59am
Looks good so far!  ------------- When you gonna send me some $$ mate ? |
Posted By: t.geessounds
Date Posted: 08 December 2011 at 2:45am
| wats that jig with the clamp on pic 4 |
Posted By: DiscernAudio
Date Posted: 08 December 2011 at 3:28am
We just clamped two squares to a block. This was to help get our first three sides nice and square. My dad is used to building cabs by himself and it is one of his tricks. We didn't use it much as we there were two of us, but it along with that lead weight on top helped as a counterweight to hang the cab off the table to install bottom screws. We did make that make that jig you see on the router. |
t.geessounds wrote:Posted By: Meshakroots
Date Posted: 08 December 2011 at 3:30am
Looks effin' clean Sadler! Been trying to figure the best way to cut my 18's out and that looks perfect on the router. I was thinking something similar but you just showed me what to do, thanks!
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Posted By: Nitz V1505
Date Posted: 08 December 2011 at 3:16pm
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Nice build so far dude!!!! Wood looks good , cant see any knots. ------------- LET THE BASS ROLL LIKE THUNDER & THE TOPS LIKE LIGHTNING..... |
Posted By: rhuet99
Date Posted: 08 December 2011 at 5:45pm
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Nice trick with the framing squares. I may have to use that. I have a couple of equilateral triangles with a wide flange on two sides that allow clamps to be placed. Works great when one builds alone. |
Posted By: DiscernAudio
Date Posted: 09 December 2011 at 6:37pm
| 3 new pics added |
Posted By: Edd Jordan
Date Posted: 09 December 2011 at 7:03pm
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Good build! ------------- I do a sideline in ply wood wheels. |
Posted By: DiscernAudio
Date Posted: 13 December 2011 at 2:39pm
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1 new pic added to bottom. Tops will be going on today. Pics to follow. |
Posted By: Herb-i
Date Posted: 20 December 2011 at 4:23pm
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Looking good fella
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Posted By: aperrado
Date Posted: 21 December 2011 at 3:46am
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are u making changes in this box to fit the lowriders? like bigger box,ports or something. ------------- Im hard to learn but still asking |
Posted By: DiscernAudio
Date Posted: 21 December 2011 at 4:53am
Yes. The box was designed with Bass Box Pro and Peavey's suggested Medium box size and tuning frequency. The box 's internal dims are 46.5 x 19 x 28.25. The port is about 5.125 x 19 x 8.5 |
Posted By: aperrado
Date Posted: 22 December 2011 at 6:37am
 ------------- Im hard to learn but still asking |
Posted By: The Builder
Date Posted: 22 December 2011 at 9:27am
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That would be inches ------------- It just is. |
Posted By: DiscernAudio
Date Posted: 22 December 2011 at 2:24pm
| kilometers |
Posted By: aperrado
Date Posted: 14 January 2012 at 2:11am
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do you have pics of finished cabs ? ------------- Im hard to learn but still asking |
Posted By: aperrado
Date Posted: 29 January 2012 at 11:44pm
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Thinking of someone of you guys has a bass box pro and can help me on this : I made a pair of b&c 18, but want to know if the port need to be modified for a peavey lowrider 18, that is for what Im looking for the guys to know how to run bass box, proany help very welcome ty. ------------- Im hard to learn but still asking |
Posted By: DiscernAudio
Date Posted: 19 February 2012 at 2:14am
| new pic added, grill done, gettin ready to paint and add casters and handles |
Posted By: DiscernAudio
Date Posted: 20 February 2012 at 11:30pm
| added pic of amps and processor |
Posted By: speakergeek
Date Posted: 13 March 2012 at 7:21pm
| Holy crap that's a tight box!! Your so lucky to have a dad that can not only help you build but teach you the skills you need. I dream of having that. Man, that's a TIGHT box and congratulations!! |
Posted By: DiscernAudio
Date Posted: 13 March 2012 at 7:42pm
Thanks mate! Isee you're not too far, Im in Alabama. |
Posted By: DiscernAudio
Date Posted: 17 March 2012 at 7:02am
| Painted. Two new pics in first post |
Posted By: DiscernAudio
Date Posted: 15 May 2012 at 3:07am
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New pic added to top w/ grills removed..... or here... http://i46.tinypic.com/11u9lcn.jpg" rel="nofollow - http://i46.tinypic.com/11u9lcn.jpg |
Posted By: ermita
Date Posted: 15 May 2012 at 4:35pm
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Tidy build mate
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Posted By: Dub Specialist
Date Posted: 16 May 2012 at 11:34am
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yes.! very nice build man.....
also can anyone tell me the purpose of the cutout's in all of the bracing ??? thanks......... ------------- treat all creation with respect. For music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion! MUSIC IS LIFE 
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Posted By: DiscernAudio
Date Posted: 12 September 2012 at 6:06pm
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sorry for the delay Dub Specialist. the cutouts in the braces are to save weight and volume and to keep the volume open. it would be possible to just use floating braces in the cavity but much easier to work with larger single pieces. |
Posted By: lycantheleopard
Date Posted: 12 September 2012 at 8:18pm
| good american drivers and american craftsmanship, love to see that. a dual eighteen bass reflex sub built right can do some serious damage in the right hands. what are you planning to use for the rest of the system? mids/highs..if you want to keep the peavey theme, the 44xt drivers are simply awesome for midrange to high frequency horns. |
Posted By: DiscernAudio
Date Posted: 12 September 2012 at 10:17pm
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Im using EV Sx300 on tops, dont have money to invest in building tops yet, but will soon. Would like to build 2 more of these subs as well to have 2 proper stacks for small parties |
Posted By: lycantheleopard
Date Posted: 13 September 2012 at 12:49am
| nothing at all wrong with the ev sx 300s if they are all orriginal. rock with them on poles above the subs, with about 2 ft between top of sub and bottom of ev, and they will go a long wiay. with eight eighteens, you'd need a pretty robust mid/high set up to go with it, and good ac current available, which in the u.s is harder and harder to find these days. noone seems to let us tap into the pannel anymore, and on stage power is usually one 20a circuit if your lucky.. |
Posted By: DiscernAudio
Date Posted: 26 September 2012 at 3:20pm
| 4 new pics added to bottom of original post |
Posted By: DJ Maestro
Date Posted: 03 October 2012 at 5:05am
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Hey discernaudio can you send me the exact measures of your gsubs? i would like to build a pair of those. Do you already tested them, how they sound? |
Posted By: DiscernAudio
Date Posted: 03 October 2012 at 6:48am
Posted these earlier... The box 's internal dims are 46.5 x 19 x 28.25. The port internal dims are about 5.125 x 19 x 8.5 I did of course simulate them via software pre-build to get the response I wanted, but I have not recorded and plotted actual freq response since theyve been built. However, they sound great! Would build 2 more if I had the money. |
Posted By: DiscernAudio
Date Posted: 28 December 2012 at 9:44pm
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new pic added to bottom of original post |
Posted By: DiscernAudio
Date Posted: 17 February 2013 at 8:17pm
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Posted By: shockwavesoundz
Date Posted: 06 May 2013 at 5:33am
| Hi i know its been a while but i was curious...is the G sub also a Direct Radiating sub? |
Posted By: all bass
Date Posted: 06 May 2013 at 5:49am
yes! 
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Posted By: DiscernAudio
Date Posted: 06 May 2013 at 2:12pm
Yes, Gsubs are a standard bass reflex box, and and all reflex boxes are direct radiating. |
Posted By: shockwavesoundz
Date Posted: 06 May 2013 at 9:24pm
| Would it be possible for you to design a box for me similar to yours for the Eminence Omega Pro 18"? I would like to build 8 of them...have no idea how to use the software though... |
Posted By: I-Man Lance
Date Posted: 05 November 2013 at 8:04pm
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I'm about to begin building a gsub just now and I'm wondering, does it make sense to wire the 2 drivers in parallel to the one speakon port then run that through one bridged amp? Would this be the sensible way to do it? Maybe something like 2 pd 186 in the g-sub at 8 ohm each through a bridged amp running around 3000W at 4ohm? And these are looking well good. Nice one. |
Posted By: DiscernAudio
Date Posted: 05 November 2013 at 8:33pm
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Yes, that is perfectly fine, that is the way I run mine. It is the most simple way. |
Posted By: Artical Kulcha
Date Posted: 05 November 2013 at 11:58pm
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Posted By: jollygt78
Date Posted: 06 November 2013 at 6:37pm
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what speaker wire is that in the pic showing the back of your amps? Neutrik connectors? |
Posted By: DiscernAudio
Date Posted: 06 November 2013 at 6:45pm
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Yes, Neutrik connectors. Cable= http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=2954506&srkey=C184-29172 |
Posted By: Kyriptus
Date Posted: 15 November 2013 at 5:40pm
iv got 6 gsubs now ;) currently getting another 2 ready to be loaded :P
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Posted By: DiscernAudio
Date Posted: 15 November 2013 at 6:01pm
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What are they loaded with? Looks like Fane 18XB? What is the GSub design? standard? or did you adjust volume and port tuning?
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Posted By: Kyriptus
Date Posted: 04 December 2013 at 2:43am
| yeah they are loaded with fane xbs and just standard design iv now got another 4 which im getting ready to load |
Posted By: DiscernAudio
Date Posted: 04 December 2013 at 2:22pm
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Here is the latest pic of my system with the new HD215 addition.... |
Posted By: Adam_Iron_Horse
Date Posted: 04 December 2013 at 2:46pm
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How does the hd215s sound with the g-subs? This is something iv been thinking about for a while |
Posted By: DiscernAudio
Date Posted: 04 December 2013 at 3:49pm
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It sounds great. I am still playing with the crossovers all the time. I have done some brief system response measurements (in a room) to aid in getting flat and avoiding phase issues, but not too thorough or outside yet. I plan very soon to take them outside and measure each cabinet individually, then from there will redo complete system analysis outside so I can get an optimum xover setting and eq. Right now I vary the xover anywhere between 70-85 Hz and have only really used LR24. Right now the HD215 phase is inverted (as well as the top). G sub is is normal phase. The Gsub and top are both delayed the horn length of the HD. Seem to mesh well like this , but could be better optimized |
Posted By: Kyriptus
Date Posted: 06 December 2013 at 5:07pm
| I was going to get hd215s at one point but boke ma828s were for sale before any 215's were iv been told they are a very good combo though |
Posted By: DiscernAudio
Date Posted: 06 December 2013 at 5:22pm
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Wiil be doing some more measurements and analysis this weeked. Will try to remember to report back soon. |
Posted By: DiscernAudio
Date Posted: 03 April 2015 at 3:10am
| new pic added to top of OP |
Posted By: ermita
Date Posted: 03 April 2015 at 7:03am
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Looks good and solid build man
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