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-   -   Dual 15” Dayton 390HO Nearfield Slim Build (https://www.avsforum.com/forum/155-diy-speakers-subs/2987404-dual-15a-dayton-390ho-nearfield-slim-build.html)

Sekosche 06-30-2018 11:40 PM

Dual 15” Dayton 390HO Nearfield Slim Build
 
The pair of boxes with an RSS390HO driver tuned to ~21 Hz will be 36” x 20” x 14”, around 3 cu ft net and will lay down on their side directly behind the MLP. They’ll complement my other three subs, two PSA V1801 and a Marty cube with an 18” 460HO I just finished a month ago that I really enjoyed building. A big thanks to @LTD02 for helping get me the port design right and going above and beyond with the pics to get me a sub that fits my needs.

I have all the materials and built four sawhorses yesterday (previously used a small folding table and work bench) to kick off the sub building extravaganza; the saw horses were invaluable to this dual sub build. I hope to finish them this week or maybe the end of next week at the latest, because I have five days off this week, a couple of which will be dedicated to the build. This will hopefully be a much quicker build than my Marty cube that I took my sweet time with and learned a lot from mistakes big and small along the way (I’m just going to quit setting project completion dates, lol).

I found an iNuke 6KDSP scratch and dent for $50 off, but Amazon sent me an iNuke 1KDSP last week by mistake, and I didn’t open it for a few days to find out...not happy about that, because the 6KDSP is out of stock until the line refresh in a couple months. I scrambled and ordered a 3KDSP as a backup to power them.

https://uploads.tapatalk-cdn.com/201...01006aa12f.jpghttps://uploads.tapatalk-cdn.com/201...00e28b1869.jpghttps://uploads.tapatalk-cdn.com/201...4a4aa28f43.jpghttps://uploads.tapatalk-cdn.com/201...0c40fc9113.png
https://uploads.tapatalk-cdn.com/201...2bd791c43c.jpghttps://uploads.tapatalk-cdn.com/201...9e713ca013.pnghttps://uploads.tapatalk-cdn.com/201...bdc73cc4be.jpg Bought a new table saw yesterday! I’m behind on my build progress already, but this should make all the cuts for duplicate subs much more even than my Marty cube build with a skill saw.
https://uploads.tapatalk-cdn.com/201...a6732f77ec.jpg

Start date 7/1/18
Wow, the dust collection with MDF makes this table saw worth it all on its own. Minimal cleanup and perfect cuts with easy adjustments = major time saver. Nearly done with all the cuts in about an hour is probably 10 times faster than measuring, marking, clamping, cutting, vacuuming, and repeating it all again with a skill saw...this could spell trouble for future projects on my pocket book.

https://uploads.tapatalk-cdn.com/201...930e318c0d.jpg

Cuts finally done (remembered to make the sides 1/4” longer to trim down later), had to pause a bit for work/family stuff but should get the boxes going tonight. After working and learning some woodworking skills in a professional shop growing up, I can’t say enough how much I’ve missed a table saw.

https://uploads.tapatalk-cdn.com/201...3a7206d981.jpg

I can already tell these slim boxes will be much easier to work with than the Marty cube (people with multiple full Marty’s must have needed a lot of help moving them around), which I never weighed, but the MC feels at least 20lbs heavier than my V1801’s which are 108lbs.

Everything is fitting together great!

Glad I read the tip in the DIY faq about using a chisel along the seems to get any excess PL premium off. I made a mess of it with my Marty cube build trying to wipe it all away, and then it just creates more problems for sanding later.
https://uploads.tapatalk-cdn.com/201...164ee5726.heic
Using 2” brad nails to hold down the port rails this time instead of adding weights like I did with the Marty cube; figure it’ll turn out about the same either way...careful not to split the MDF near the end with such thin strips of wood (did this on the first port rail). Only my second time working with MDF here so valuable lesson learned. Brad nails are a big help getting the rails secured to save time for the next steps.

Been really sick a few days so had to put the build on hold until possibly tomorrow, missed a lot of productive days I would have normally had off work too...intestinal viruses are the worst!

7/24/18:
Finally getting at it again today. I had to redo one of the boxes due to using a scrap piece of MDF for the bottom that wasn’t square when I made the initial cuts, and didn’t notice it until I had the sides and back already on and the port rails and pieces were fitting strange. I would have just kept going but it was easier to make another box than try to adapt to the out of square dimensions that would throw off everything from that point forward. First and third boxes are all squared up!
https://uploads.tapatalk-cdn.com/201...20eaa197f0.jpg
If you read my Marty cube build, you’ll notice this is my second mistake that required starting over on a box...it’s a learning process that’s for sure. [emoji3]

Added caulking for good measure, though I didn’t on my Marty cube and it turned out awesome...likely not necessary using PL Premium since it fills gaps so well. The caulking made it more difficult to add bracing, and I wound up removing it in the places with braces.
https://uploads.tapatalk-cdn.com/201...93efca66da.jpg

Next step is bracing, think I’ll try 2x4” boards this time due to the single baffle instead of dowels, and because that’s how John drew it up. It’ll be a couple weeks until they’re ready to sand, paint, and finish; not a lot of time in my schedule until next month. Otherwise this is a faster build, considering it’s two boxes, counting actual work time partly due to using the table saw that helps a lot for precision adjustments.

Dry fit baffle and top before cutting driver hole, so far so good! Hope to get most the bracing in today.
https://uploads.tapatalk-cdn.com/201...4db35a2193.jpg

I added two dowel rods for cross bars to the pair of braces surrounding the driver just for good measure, especially since I have no horizontal bracing and am using a single baffle. Hope to finish the baffle cut outs, bracing, Speakon hole, and get the baffle in today and possibly the insulation if I have time.

Attaching the shop vac to the router definitely helps reduce MDF dust quite a bit for the cut outs vs my last build.
https://uploads.tapatalk-cdn.com/201...e3c42c045f.jpg
Perfect fit, ready to duplicate the next one!
https://uploads.tapatalk-cdn.com/201...33f2cce6ea.jpg

Bracing done! Time to slap the rest together
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Adding 3/4”x3” pine blocks behind each driver hole for good measure; I cut out a 1.5” plywood ring on my Marty cube for extra bracing and that worked well, but this is easier for two boxes and I have lots of scrap wood for it. Just need to finish the Speakon Mount and insulation later today when I get back and we’re ready to round over the edges and paint! I’m not entirely sure where I want the Speakon since I may use them in multiple orientations, but will likely be on the side that’ll be facing up.

Insulation taking a lot longer than the Marty with so many individual pieces needed...probably overkill but that’s OK.https://uploads.tapatalk-cdn.com/201...24da0ede95.jpg

All glued up! Letting cure and spackle in holes, sand, then roundovers and ready to paint whenever I get a few days off.
https://uploads.tapatalk-cdn.com/201...a63cc45cc4.jpg
https://uploads.tapatalk-cdn.com/201...a4c8f13350.jpg

8/12/18: Finally getting the edges routered flush (great time saver), rounded over with a 3/8”, and sanded down.
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Ready to prime on my next two week break in a few days! The end is in site, woohoo [emoji3]
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8/16
All primed and silky smooth...too bad nobody will even notice them behind the couch, lol. The Jumping Java paint from Lowe’s happens to match my seating perfectly, same as on the Marty cube. Should get the first coat on tomorrow
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8/19: first coat of two, should be ready to install the drivers and get them setup tomorrow! I’m excited to be almost done.
https://uploads.tapatalk-cdn.com/201...a013da5a23.jpg

All done! Now to plop them behind the couch; won’t have time to calibrate then today but I’m off the rest of the week so I’ll be breaking them in and then some.
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Using the Marty cube’s input, I did a quick WWZ grenade bass drop a handful of times for each box to make sure they’re good to go behind the couch, and they sound as effortless as the Marty cube with no hint of port noise. [emoji3]
https://uploads.tapatalk-cdn.com/201...ec2868067e.jpg
Ready to rock!
Much improved FR with the latest calibration
https://uploads.tapatalk-cdn.com/201...a99c2b3852.jpg

Bur05XP 07-01-2018 12:39 PM

Looking forward to this build. I'm between this or a 18" depth Cyclops 18 with 17-18 hz tune. I'd do two of either along with dual MicroMartys that fit much like your MartyCube spot. And these would lay on their side making a TV stand.

Sekosche 07-01-2018 04:09 PM

Dual 15” Dayton 390HO Nearfield Slim Build
 
Quote:

Originally Posted by Bur05XP (Post 56426416)
Looking forward to this build. I'm between this or a 18" depth Cyclops 18 with 17-18 hz tune. I'd do two of either along with dual MicroMartys that fit much like your MartyCube spot. And these would lay on their side making a TV stand.

I think any combination of those subs would be great depending on your room and listening habits.

I almost did just a single longer, slim box 5-6 cu ft with another 18” 460HO, but I wanted something a little more manageable for nearfield than the Marty cube for building and moving around to taste. I also looked at the cyclops design, but it’s still too tall for its depth to where I’d have to move the couch out quite a bit; and I prefer the port firing into the seating as well for nearfield placement.

Hopefully the weather cooperates tomorrow, because I’m doing all the cuts outside to save the garage from the MDF mess that’s impossible to escape without some killer dust collection system. For the Marty cube build, I even covered all the storage shelving that lines every wall with tarps to keep dust piling up to a minimum and thoroughly vacuumed between cuts, but the dust still finds a way to get you! [emoji3]

Edit: cut everything in the garage with the new table saw, helped cut down a tremendous amount on dust and was a joy to work with

asarose247 07-06-2018 12:38 PM

@Sekosche

interesting slim design, I can see how that might just . .

questions

what is the tuning?

power requirements

was there any other driver(s) discussed or this design optimized for the 390HO?

I have 3 x 390HF's which if your info and maybe a discussion or 2 with John might scratch a small itch

TIA

asarose247 07-06-2018 12:40 PM

1!DOH

ok saw the tuning . . .
just got excited . .

DaBateman 07-06-2018 02:28 PM

Looks like an interesting build! Plus that table saw is a life saver. That’ll be worth every penny.

You should be extremely proud, you have an incredible setup.

:)

bluer101 07-06-2018 06:22 PM

Quote:

Originally Posted by Sekosche (Post 56427272)
I think any combination of those subs would be great depending on your room and listening habits.

I almost did just a single longer, slim box 5-6 cu ft with another 18” 460HO, but I wanted something a little more manageable for nearfield than the Marty cube for building and moving around to taste. I also looked at the cyclops design, but it’s still too tall for its depth to where I’d have to move the couch out quite a bit; and I prefer the port firing into the seating as well for nearfield placement.

Hopefully the weather cooperates tomorrow, because I’m doing all the cuts outside to save the garage from the MDF mess that’s impossible to escape without some killer dust collection system. For the Marty cube build, I even covered all the storage shelving that lines every wall with tarps to keep dust piling up to a minimum and thoroughly vacuumed between cuts, but the dust still finds a way to get you! [emoji3]

Get yourself a cheap tent for harbor freight or such. That what I do light rain or not. I do all my cutting in the driveway and use my makita blower to remove the sawdust.

Sekosche 07-07-2018 03:05 AM

Quote:

Originally Posted by asarose247 (Post 56451386)
@Sekosche



interesting slim design, I can see how that might just . .



questions



what is the tuning?



power requirements



was there any other driver(s) discussed or this design optimized for the 390HO?



I have 3 x 390HF's which if your info and maybe a discussion or 2 with John might scratch a small itch



TIA


What are you looking to do with the 390’s or are they already in your system? I know the HO can handle a lot more power than the HF drivers, but I’m not that familiar with their differences.

The 390HO can take full power from one channel of a 3000DSP without any issues, as that’s still roughly 300 watts shy of overloading the 390HO, rated at 800 WRMS. I’ll likely be fine with half their power or less anyway for very nearfield...we’ll see, still sad I wasn’t able to get another 6000DSP. Each box will hit 110dB around tune per driver and is +10dB above that >50-60Hz.

I went with the 390HO because I wanted something fairly slim that works well in a smaller enclosure to either lay flat on it’s back or lay on its side behind the couch, as I have room for either orientation once the chairs are reclined; and I like the sound signature and tactile response of its big brother, the 460HO, in my Marty cube. I’d definitely consider myself a tactile bass junkie, and these subs are to help fill the void that’s been there ever since I got rid of two 12” MBMs and two 18” full range subs last winter. I’m excited to experience a pair of full bandwidth subs directly behind me for some extra deep bass, as the MBMs were strictly 50-100Hz.

I wanted the box optimized for the driver to still reach a similar tune to my other subs without crippling the output of the driver, and these slim subs at ~3 cu ft with a single baffle should be quite a bit lighter than a micro Marty (3.75 cu ft) that it’s originally based off of.

Bur05XP 08-03-2018 10:46 AM

Great progress. I'm ready to start mine. Besides any 'mistakes' it doesn't look like you've encountered any design issues? Also, can one enclosure be made from one 4' x 8' board or was it three boards for two enclosures?

Sekosche 08-03-2018 11:13 AM

Dual 15” Dayton 390HO Nearfield Slim Build
 
Quote:

Originally Posted by Bur05XP (Post 56587034)
Great progress. I'm ready to start mine. Besides any 'mistakes' it doesn't look like you've encountered any design issues? Also, can one enclosure be made from one 4' x 8' board or was it three boards for two enclosures?


Thanks.

It’s a good design for sure. Yes, I think just one 49” x 97” sheet per box will do it (I wound up using three sheets due to my mistake), and I didn’t use the cut list layout program. If you have them cut at the store each sheet into two 74” by 24.5” sections, and then 24.5” x 49” piece what’s leftover at the end, you’ll have some smaller pieces left over for scrap in case you mess up. I don’t think you have to be ultra precise on your lay out and cuts to get one box per sheet. But with the longer dimensions of this box, it doesn’t leave as much room for error in assembly when you need more long pieces of MDF.

Just got the second box innards all done and ready to put the baffle and top on before doing round overs later; might not have time tonight and I’m working a lot the next two weeks so might be a good bit before I can totally finish them. I guess making two subs that only take 50% longer to build than the last one by itself isn’t too shabby. [emoji3]

iH8usrnames 08-03-2018 11:19 AM

What did you use to generate the cut list? I am new to this whole cabinet building game.

Sekosche 08-03-2018 11:24 AM

Dual 15” Dayton 390HO Nearfield Slim Build
 
Quote:

Originally Posted by iH8usrnames (Post 56587222)
What did you use to generate the cut list? I am new to this whole cabinet building game.


There’s a modify my Marty spreadsheet calculator that will give you the box cuts if you plug in the dimensions...let me find the link.

https://www.avsforum.com/forum/155-d...alculator.html

ereed 08-03-2018 11:26 AM

Would be interesting to see how this compares to your psa subs. Also I noticed you also have crowson actuators as well. Plenty of firepower you got there!

Sekosche 08-03-2018 11:33 AM

Dual 15” Dayton 390HO Nearfield Slim Build
 
Quote:

Originally Posted by ereed (Post 56587268)
Would be interesting to see how this compares to your psa subs. Also I noticed you also have crowson actuators as well. Plenty of firepower you got there!


Me too, as I’ve had both their ported and sealed 15” subs in my home. Did your Crowson’s come in yet? You’ll love them!

Honestly, when I had four PSA V18 subs (one in each corner), it was the pinnacle of my bass experience, so I’ve just been trying to get back to there ever since I traded two in for their tower speakers last year. My in room response and tactile bass was ridiculous with those four, and I was hitting 120-130dB from 20Hz and up. I bet these two 15” little buddies placed nearfield will finally get me back to bass nirvana. [emoji3]

I know how the 18” driver in my Marty cube compares to my V1801 PSA subs, and I talked about it a bit in the comments on that build page which is here: Marty Sub with Dayton 460HO Build
https://r.tapatalk.com/shareLink?sha...2&share_type=t

ereed 08-03-2018 11:51 AM

Quote:

Originally Posted by Sekosche (Post 56587298)
Me too, as I’ve had both their ported and sealed 15” subs in my home. Did your Crowson’s come in yet? You’ll love them!

Honestly, when I had four PSA V18 subs (one in each corner), it was the pinnacle of my bass experience, so I’ve just been trying to get back to there ever since I traded two in for their tower speakers last year. My in room response and tactile bass was ridiculous with those four, and I was hitting 120-130dB from 20Hz and up. I bet these two 15” little buddies placed nearfield will finally get me back to bass nirvana. [emoji3]

I know how the 18” driver in my Marty cube compares to my V1801 PSA subs, and I talked about it a bit in the comments on that build page which is here: Marty Sub with Dayton 460HO Build
https://r.tapatalk.com/shareLink?sha...2&share_type=t

According to the tracking the crowsons will be here this coming Monday. Can't wait! I got my subs perfectly delayed via minidsp and hoping I don't have to redo them when I install the crowsons.

So you had perfect bass with quad 18s but sold them? I would have kept them and then saved up for tower speakers or whatever. Bass is much harder to get right than anything else from my own experiment. That's why I'm not upgrading my pb13s since I have good bass response now with proper placement and timing delays....so best not to touch it....even though I want 18s. LOL


Just saw your other thread....you mentioned in the beginning you have 2 minidsp 2x4hd not being used. Are you using them now?

Sekosche 08-03-2018 01:27 PM

Dual 15” Dayton 390HO Nearfield Slim Build
 
Quote:

Originally Posted by ereed (Post 56587384)
According to the tracking the crowsons will be here this coming Monday. Can't wait! I got my subs perfectly delayed via minidsp and hoping I don't have to redo them when I install the crowsons.

So you had perfect bass with quad 18s but sold them? I would have kept them and then saved up for tower speakers or whatever. Bass is much harder to get right than anything else from my own experiment. That's why I'm not upgrading my pb13s since I have good bass response now with proper placement and timing delays....so best not to touch it....even though I want 18s. LOL

Just saw your other thread....you mentioned in the beginning you have 2 minidsp 2x4hd not being used. Are you using them now?

I bet you’ll be fine just using the delay your nearfield PSA sub uses. What amplifier are you using for the Crowson’s, as it might add a good 3-6 seconds processing delay too?

Well, I traded two of my four PSA 18” subs in for the MTM-210T’s as part of a WAF compromise to downgrade big sub boxes in the room to get approval for a projector and screen in our family room; she actually likes the look of the towers better too. I soon after regretted it somewhat due to the reduction in bass headroom, worse response, and tactile bass that was lost at the MLP with only subs in the front of the room, but the wife (and kids) now love the PJ, and she doesn’t enjoy watching TV on anything smaller. Sadly, I’ve spent far more money on DIY tools (probably $1500-2K on tools alone) and materials than it would have cost me to just buy two more PSA subs; however, I enjoy woodworking and my wife is cool with the DIY aspect as an eventual means to save money when I have a dedicated theater.

I’m not using either miniDSP now. They were mostly just used for a house curve and to help tweak the two near field MBMs I had for a year. I may implement them again, but with the DSP in the iNuke amps, they’re not really needed. It simplifies the signal chain for me and that’s what I also like; the analysis by paralysis got hit me when I ventured down the bass rabbit hole too far with room EQ software and endless tweaking, and I’d rather just enjoy my system...as soon as this build is done I swear!

This really is my final addition/adjustment to the home theater for a couple years until I have a dedicated space. [emoji3]

ereed 08-03-2018 05:36 PM

Quote:

Originally Posted by Sekosche (Post 56587892)
I bet you’ll be fine just using the delay your nearfield PSA sub uses. What amplifier are you using for the Crowson’s, as it might add a good 3-6 seconds processing delay too?


Well, I traded two of my four PSA 18” subs in for the MTM-210T’s as part of a WAF compromise to downgrade big sub boxes in the room to get approval for a projector and screen in our family room; she actually likes the look of the towers better too. I soon after regretted it somewhat due to the reduction in bass headroom, worse response, and tactile bass that was lost at the MLP with only subs in the front of the room, but the wife (and kids) now love the PJ, and she doesn’t enjoy watching TV on anything smaller. Sadly, I’ve spent far more money on DIY tools (probably $1500-2K on tools alone) and materials than it would have cost me to just buy two more PSA subs; however, I enjoy woodworking and my wife is cool with the DIY aspect as an eventual means to save money when I have a dedicated theater.

I’m not using either miniDSP now. They were mostly just used for a house curve and to help tweak the two near field MBMs I had for a year. I may implement them again, but with the DSP in the iNuke amps, they’re not really needed. It simplifies the signal chain for me and that’s what I also like; the analysis by paralysis got hit me when I ventured down the bass rabbit hole too far with room EQ software and endless tweaking, and I’d rather just enjoy my system...as soon as this build is done I swear!

This really is my final addition/adjustment to the home theater for a couple years until I have a dedicated space. [emoji3]

My prepro has 2 sub outputs....same signal as one. One of sub outs goes to minidsp...then 3 subs out of minidsp. Closest sub has most delay while the farthest sub has no delay. So they are time aligned.

So basically the 2nd sub out of prepro will go to the crowson d501 amplifier which will power 2 actuators. I have no idea how much delay the amp has.

I did think about hooking the crowson to the minidsp but probably not a good idea since I have one cut and one boost in the input side of minidsp and it would affect all outputs. I would just have to hook it up and see!


And yes….once you go projector its hard going back to a tv. And its your final addition? That's what they all say! I thought I was done after adding 3rd sub....but reading forums doesn't help!

I think those dual DIY 15s will give quite an impact when its all done!

ereed 08-03-2018 05:38 PM

Also you will get your money back from the tools after building more DIY stuff in future....or find friends who needs subs and build it and charge them a cool fee!

Sekosche 08-03-2018 07:44 PM

Quote:

Originally Posted by ereed (Post 56588972)
My prepro has 2 sub outputs....same signal as one. One of sub outs goes to minidsp...then 3 subs out of minidsp. Closest sub has most delay while the farthest sub has no delay. So they are time aligned.



So basically the 2nd sub out of prepro will go to the crowson d501 amplifier which will power 2 actuators. I have no idea how much delay the amp has.



I did think about hooking the crowson to the minidsp but probably not a good idea since I have one cut and one boost in the input side of minidsp and it would affect all outputs. I would just have to hook it up and see!



And yes….once you go projector its hard going back to a tv. And its your final addition? That's what they all say! I thought I was done after adding 3rd sub....but reading forums doesn't help!



I think those dual DIY 15s will give quite an impact when its all done!


I doubt the Crowson amp adds much delay if any, as there is no signal shaping DSP or any processing for extra latency, so you’re probably fine to just use your internal split LFE signal given the distance setting used is appropriate for your actuator delay. There’s nothing wrong with using a boosted signal from the MiniDSP to your MA, and you may actually prefer it this way. I run mine with a heavy dynamic boost for lower volume listening with the family that tapers off approaching reference levels, and it’s phenomenal for this purpose. Haven’t had a single issue with the Crowson’s yet, and I’ve been running them pretty hard for two years.

I’ll definitely use all the new tools for a lot more than just home theater projects; that’s one reason I can justify spending as much as I have, and the wife is cool with it.

I swear I really am done with upgrades (baring equipment failure) for a while...more important things to spend time and money on in the coming years. I bet these two subs will be spectacular for nearfield use...will find out in a couple weeks when I have time to finish them. These forums certainly don’t help those suffering from upgraditis, but I haven’t been as active since getting into DIY and keeping busy with my kiddos. [emoji3]

Sekosche 08-20-2018 07:10 PM

Dual 15” Dayton 390HO Nearfield Slim Build
 
Going to get them setup tomorrow and broken in binge watching these 2018 4K releases the next few days...can’t wait! I think the subs turned out exactly as I’d hoped, but we’ll see after the movie marathon.

I’ve viewed all of these at home this year but The Matrix 4K and Fury 4K so will be fun to compare.

Edit: The Matrix track was simply stellar, easily one of the best Atmos recordings I’ve heard. Fury is up tomorrow morning after calibration.

https://uploads.tapatalk-cdn.com/201...573974d5ef.jpg
https://uploads.tapatalk-cdn.com/201...86fd5b55cc.jpg

Sekosche 08-21-2018 08:40 AM

Dual 15” Dayton 390HO Nearfield Slim Build
 
So the iNuke 3000DSP’s single fan is way louder than the 6000DSP with two fans, even when both are at idle. I always wondered why people complained about the iNuke noise level, but maybe it’s the lower tier models that run higher RPMs due to the single fan. The 3K stock fan is 8dB louder at the back of the unit than the 6K! If I didn’t have them near the MLP, I might be able to tolerate it; but I can still hear the fan anywhere in the room.

So the fan swap mod is on my to do list today or tomorrow; luckily, I have an extra fan from a couple years ago that wasn’t needed in the whisper quiet 6K (maybe I got lucky with this unit). Think the extra fan I have is an Arctic F8, so I’ll post back when it’s done and hope for the best.

ereed 08-21-2018 01:57 PM

So how does it sound?

Sekosche 08-21-2018 04:49 PM

Dual 15” Dayton 390HO Nearfield Slim Build
 
Quote:

Originally Posted by ereed (Post 56676176)
So how does it sound?



Pretty fantastic, but I still haven’t properly calibrated them as I was in a hurry to just relax and watch a movie today, did a quick SPL match to my other subs to watch The Matrix 4K at reference (phenomenal Atmos track); I’ll spend a couple hours tomorrow getting it all squared away.

These subs are miles better than the little budget 12” MBM’s I had behind the couch last year; but these subs can definitely still sound overwhelming and drown out the front stage when ran with a house curve and nearfield with so much added bass. The extra full bandwidth bass from all sides feels and sound great...think I’m finally back to where I was a year ago, lol.

Nalleh 08-21-2018 06:42 PM

Awsome build man :) Congrats :)
I like how they colour match the couch :)

ereed 08-22-2018 07:27 AM

Quote:

Originally Posted by Sekosche (Post 56677092)
Pretty fantastic, but I still haven’t properly calibrated them as I was in a hurry to just relax and watch a movie today, did a quick SPL match to my other subs to watch The Matrix 4K at reference (phenomenal Atmos track); I’ll spend a couple hours tomorrow getting it all squared away.

These subs are miles better than the little budget 12” MBM’s I had behind the couch last year; but these subs can definitely still sound overwhelming and drown out the front stage when ran with a house curve and nearfield with so much added bass. The extra full bandwidth bass from all sides feels and sound great...think I’m finally back to where I was a year ago, lol.

Try this....get your nearfield subs (the pair) to be about 3db lower than the farfield total pair. I found the bass to come more from the front/around me better. When I had the rears exact same spl as front the rear was distracting a little and taking all the attention from the front subs. Or if you like how the rear subs are spl wise....turn up the front subs 3db. Either way will give same results. Let me know what you think.

Sekosche 08-22-2018 09:04 AM

Dual 15” Dayton 390HO Nearfield Slim Build
 
Quote:

Originally Posted by ereed (Post 56679540)
Try this....get your nearfield subs (the pair) to be about 3db lower than the farfield total pair. I found the bass to come more from the front/around me better. When I had the rears exact same spl as front the rear was distracting a little and taking all the attention from the front subs. Or if you like how the rear subs are spl wise....turn up the front subs 3db. Either way will give same results. Let me know what you think.


Holy $h!t
Just Finished calibration and knocked a big 10dB peak down some with PEQ between 30-40Hz. Good enough for now (don’t want to spend all day tweaking), and it sounds incredible! All 5 subs are balanced well for hard hitting TR from all sides, and with the Crowson’s doing the heavy lifting under 20Hz, I’m left speechless. The speakers even sound more lifelike than ever running a little higher crossover than usual now that the bass isn’t localizable above 100Hz.

I just added +4dB to the sub trim post XT32 and am watching Fury 4K and honestly nearly fell off the couch when the first bass from artillery drops @ 00:07:05. It sounds and feels like someone dropped a bomb in my theater! I’ve had a lot of intense bass moments over the years where all you can do is smile because it’s that much fun, but this is the first scene that actually caught me off guard enough to scare...and it’s only the first movie viewing post calibration! [emoji33]

I’m finally back to where I wanted to be when I had my quad 18’s and then some. [emoji3]

https://uploads.tapatalk-cdn.com/201...4274c4f7ff.jpg

That scene is at -5MV
https://uploads.tapatalk-cdn.com/201...bad933910f.jpg
https://uploads.tapatalk-cdn.com/201...49cbe4bc74.png

ereed 08-22-2018 09:55 AM

Wow, with 5 subs I can imagine! Especially all being 18s! I have only 2 pb13s farfield and one psa v1500 very nearfield and its already loud!

So now you have your crowson's running 20hz and under only?

Rowan611 08-22-2018 09:59 AM

Quote:

Originally Posted by ereed (Post 56680376)
Wow, with 5 subs I can imagine! Especially all being 18s! I have only 2 pb13s farfield and one psa v1500 very nearfield and its already loud!

So now you have your crowson's running 20hz and under only?

The nearfield subs are 15s. He has 2 PSA 18s fairfield and the Martycube.

Sent from my Pixel XL using Tapatalk

ereed 08-22-2018 10:02 AM

Quote:

Originally Posted by Rowan611 (Post 56680410)
The nearfield subs are 15s. He has 2 PSA 18s fairfield and the Martycube.

Sent from my Pixel XL using Tapatalk

Thanks for the clarification. Still very impressive!!!

Rowan611 08-22-2018 10:18 AM

Quote:

Originally Posted by ereed (Post 56680426)
Thanks for the clarification. Still very impressive!!!

Agreed!!

Sent from my Pixel XL using Tapatalk


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