AVS Forum | Home Theater Discussions And Reviews (https://www.avsforum.com/forum/)
-   DIY Speakers and Subs (https://www.avsforum.com/forum/155-diy-speakers-subs/)
-   -   Sub changes HSTs Nearfield ds4’s ported (https://www.avsforum.com/forum/155-diy-speakers-subs/2959106-sub-changes-hsts-nearfield-ds4a-s-ported.html)

Jk7.2 02-22-2018 03:08 PM

Sub changes HSTs Nearfield ds4’s ported
 
This thread had morphed into a build for my titan 615lx’s additional 15” bass bin. Wish I could edit the title to include that info too

Thanks to a good deal, I am changing up my subwoofer situation. I currently have:
Two mini Martys up front with si ds4’s
Two Cyclopes 18 up front with ds4’s
Two horizontal Martys in the rear ds4’s
Two nearfield mid bass modules

I will be changing all four ds4’s up front to SI HST-18’s. That will free up some drivers. I sold my nearfield mbm’s and thanks to the help of @eng-399 I have new nearfield boxes to build. I will build roughly 6cf net ported cabs tuned to 18ish HZ for nearfield duty. Everything checks out with port velocity staying well under 20ms. I will keep this thread updated with pics and smile emoji. [emoji6]
https://uploads.tapatalk-cdn.com/201...fd317fbb5b.jpghttps://uploads.tapatalk-cdn.com/201...b92b0f2cda.jpg

Phonzo07 02-22-2018 04:11 PM

Nice Upgrade.. I hope you're planning on changing amplifiers also. HST18s can take Quite a bit of power. I have both DS4's in Full Martys and HST-18s in Mini Martys. With the same amount of power Sp SP2-8000 the HST's had more authority in my room. Even tested in the same locations.

Good Move.. Low Low bass should be better.

Jk7.2 02-22-2018 05:01 PM

Quote:

Originally Posted by Phonzo07 (Post 55739630)
Nice Upgrade.. I hope you're planning on changing amplifiers also. HST18s can take Quite a bit of power. I have both DS4's in Full Martys and HST-18s in Mini Martys. With the same amount of power Sp SP2-8000 the HST's had more authority in my room. Even tested in the same locations.



Good Move.. Low Low bass should be better.



I certainly should. I ran one hst free air at reference with 12 hz material and the driver didn’t even get close to xmass. I did however clip my amp. Lol

eng-399 02-22-2018 05:44 PM

Looking forward to your build! We have to plan a cut list for this and just maybe do a mock up with tape behind your seats.

Jk7.2 02-22-2018 06:05 PM

Quote:

Originally Posted by eng-399 (Post 55740090)
Looking forward to your build! We have to plan a cut list for this and just maybe do a mock up with tape behind your seats.



I will post my cut list. Good idea. I have ordered all the panels cut to size from Mans Lumber. It was under 200 for two flat packs. ;)

RoboAVS 02-22-2018 06:14 PM

loved that u picked them up. ds4s are no slouch but what an upgrade!

Jk7.2 02-22-2018 06:47 PM

Sub changes
 
Quote:

Originally Posted by RoboAVS (Post 55740228)
loved that u picked them up. ds4s are no slouch but what an upgrade!



Thanks I am excited.
Here is the cut list for the new nearfield cabs. This is for two cabs. Over all size is 40X20X18
[email protected] 18 1/2 X 28 -back of port
[email protected] 18 1/2 X 15 1/4 -side of port
[email protected] 28 3/4 X 2” -back port brace
[email protected] 17 1/4 X 2” - side port brace
4 @ 17 1/4 X 40” - top and bottom
[email protected] 40 X 20” - backs
2 @ 18 1/2 X 35 3/4- baffle
4 @ 18 1/2 X 17 1/4 - sides
4 @ 18 1/2 X 13 3/4 - inside braces
I melted my brain thinking this box over and over. If I made a mistake feel free to point it out.

Jk7.2 02-23-2018 05:19 AM

This thread is primarily a build thread for my new nearfield cabs. I had a little extra time at work so I made a cardboard mock up. Not bad. They will just fit under the backs of the theater seats while reclining. I needed two boxes instead of one big box, even though one big box would’ve netted a lower tune, because my seats are a curved row, so I wanted to angle the individual cabs slightly to keep them tight to the seats. https://uploads.tapatalk-cdn.com/201...9d19d164c2.jpg

johnson636 02-23-2018 06:27 AM

@Jk7.2 Are you selling the ds4's?

Jk7.2 02-23-2018 06:29 AM

Sub changes
 
Quote:

Originally Posted by johnson636 (Post 55742000)
@Jk7.2 Are you selling the ds4's?



Lol. No. Two of them are going into the nearfield boxes. That gives me only two extras. If I made a standby list for interested parties you’d be 5th as of now. Everyone wants them.

johnson636 02-23-2018 06:44 AM

Quote:

Originally Posted by Jk7.2 (Post 55742006)
Lol. No. Two of them are going into the nearfield boxes. That gives me only two extras. If I made a standby list for interested parties you’d be 5th as of now. Everyone wants them.

I figured as much but I thought I'd give it shot and ask:)
I'm really curious in how/if you perceive a difference in sound between the HST18 and the ds4. I used to believe bass is bass, but after hearing my ported HS24's vs my ported quad Mofo 15, I quickly realized there is a big difference in sound quality. So much so I've disconnected the 15s.

Jk7.2 02-23-2018 06:52 AM

Quote:

Originally Posted by johnson636 (Post 55742058)
I figured as much but I thought I'd give it shot and ask:)

I'm really curious in how/if you perceive a difference in sound between the HST18 and the ds4. I used to believe bass is bass, but after hearing my ported HS24's vs my ported quad Mofo 15, I quickly realized there is a big difference in sound quality. So much so I've disconnected the 15s.



I will definitely be doing very close listening once the hst’s get installed. I have to get help, because they are so heavy. But I took max spl measurements with the ds4’s and I’ll compare with the hst’s.

johnson636 02-23-2018 07:04 AM

Quote:

Originally Posted by Jk7.2 (Post 55742096)
I will definitely be doing very close listening once the hst’s get installed. I have to get help, because they are so heavy. But I took max spl measurements with the ds4’s and I’ll compare with the hst’s.

So do you have two more hst18's that are not pictured or are you still looking to purchase 2 more? Also, are those Titans 615s? If so, how is the tweeter in regards to distortion at loud listening levels? I'm looking to diy my next setup of LCR and would really like a lively, crisp and clear sounding tweeter at loud listening levels during music listening sessions. Sorry for going off topic.

Jk7.2 02-23-2018 07:26 AM

Sub changes HSTs Nearfield ds4’s ported
 
Quote:

Originally Posted by johnson636 (Post 55742146)
So do you have two more hst18's that are not pictured or are you still looking to purchase 2 more? Also, are those Titans 615s? If so, how is the tweeter in regards to distortion at loud listening levels? I'm looking to diy my next setup of LCR and would really like a lively, crisp and clear sounding tweeter at loud listening levels during music listening sessions. Sorry for going off topic.



I have all four hst’s. Yes those are the Titan615lx. The tweeter is very smooth and I’ve never heard distortion at any volume level. I frequently listen at reference and they show no signs of slowing down in capability.

thesamarai 02-23-2018 07:27 AM

what are your planned final dimensions for the nearfields? im also looking for a new project for behind the seats.

Jk7.2 02-23-2018 07:28 AM

Quote:

Originally Posted by thesamarai (Post 55742248)
what are your planned final dimensions for the nearfields? im also looking for a new project for behind the seats.



40 wide 20 tall 18 deep

thesamarai 02-23-2018 08:32 AM

thanks, i think i can move my chair up a little to meet those dimensions. ill be following your build, what drivers are u using?

Jk7.2 02-23-2018 08:33 AM

Quote:

Originally Posted by thesamarai (Post 55742630)
thanks, i think i can move my chair up a little to meet those dimensions. ill be following your build, what drivers are u using?



SI ds4’s. Very close to the UM 18-22’s.

brian6751 02-23-2018 07:45 PM

Quote:

Originally Posted by Jk7.2 (Post 55742006)
Lol. No. Two of them are going into the nearfield boxes. That gives me only two extras. If I made a standby list for interested parties you’d be 5th as of now. Everyone wants them.



That’s fine. I have a plan B [emoji12]


Sent from my iPhone using Tapatalk

Jk7.2 02-23-2018 08:07 PM

Quote:

Originally Posted by brian6751 (Post 55746518)
That’s fine. I have a plan B [emoji12]


Sent from my iPhone using Tapatalk



Do tell, please! 21’s? 24’s?

brian6751 02-23-2018 08:19 PM

Quote:

Originally Posted by Jk7.2 (Post 55746582)
Do tell, please! 21’s? 24’s?



You keep your precious DS4’s. I’m goin nuclear muahahahahahahaha


Sent from my iPhone using Tapatalk

eng-399 02-23-2018 08:30 PM

Quote:

Originally Posted by brian6751 (Post 55746630)
You keep your precious DS4’s. I’m goin nuclear muahahahahahahaha


Sent from my iPhone using Tapatalk



Dual 24’s then [emoji16]

brian6751 02-23-2018 08:36 PM

Quote:

Originally Posted by eng-399 (Post 55746666)
Dual 24’s then [emoji16]



Only Jeremy knows....


Sent from my iPhone using Tapatalk

eng-399 02-23-2018 08:37 PM

Quote:

Originally Posted by brian6751 (Post 55746702)
Only Jeremy knows....


Sent from my iPhone using Tapatalk



Ahh I know what your doing then[emoji41]

brian6751 02-23-2018 08:40 PM

Quote:

Originally Posted by eng-399 (Post 55746704)
Ahh I know what your doing then[emoji41]



For real? Dang. Can’t keep nothing hidden around here!


Sent from my iPhone using Tapatalk

Jk7.2 02-25-2018 12:34 PM


Jk7.2 02-25-2018 04:57 PM

So after playing around with the new hst’s installed, only two of the four, holy smokes. That’s all I can say. After two more, and moving the two ds4’s to nearfield, it’s gonna be ridiculous. Effortless pant flapping bass. I can’t wait to get the others installed. Other then breaking things upstairs in my house. That I don’t want to do.

johnson636 02-25-2018 05:26 PM

Quote:

Originally Posted by Jk7.2 (Post 55754506)

Don't mean to break the bad news to you bro, but those HST's look hideous and I bet they sound even worse...........Sell them to me now! What's your paypal:D

tk123 02-25-2018 07:11 PM

😂😳🤪
Awesome

Jk7.2 02-26-2018 01:40 PM

I had a realization. I currently have 10 18” subs in my basement at the time. Lol. Wish I could run them all at the same time. https://uploads.tapatalk-cdn.com/201...cbc5f145cd.jpghttps://uploads.tapatalk-cdn.com/201...558bc5b457.jpghttps://uploads.tapatalk-cdn.com/201...1ca52ad22f.jpg


All times are GMT -7. The time now is 05:49 PM.

Powered by vBulletin® Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
vBulletin Security provided by vBSecurity (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.