Corner subs for my theater build

So I have been working on getting my basement finished and decided to take a break from the standard construction work to start building the rear subs for my theater.
The front stage will have 4 SI HT18D2s in DIYSG 4cf sealed enclosures stacked.
The rear subs will be in the back corners of the theater in custom built 4cf (after driver and bracing) corner cabinets housing 2 more SI HT18D2s.

The enclosures will be hidden behind fabric covered panels. I will finish them in black but I am not worried about them being perfect.
That being said, I am happy with how the first one came out. I still need to do the driver recess (waiting for my rabbet bit to show up), drill the hole on the top for the speakon and then shoot it black...after I complete the second one...
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"Some people find it easier to be conceited rather than correct."

"Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
2 Channel: Silverline Audio Sonatina MKI, Monitor 5 Series II, DIY Seas based bookies
LR 2 Channel: LSi7, DSW-MP2000
HT: JTR Triple 8 LCRs, DIYSG Volt 8LX Surrounds, DIYSG Volt 6LX Atmos, 6 SI HT-18D2 Subs
Guest BR 2 Channel: Swans D1080MKII
Deck: Pyle BT Speaker pair with upgraded woofers
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Comments

  • vmaxervmaxer Posts: 3,989
    Impressive.
    Pio Elete Pro 520
    Panamax 5400-EX
    Sunfire TGP 5
    Micro Seiki DD-40 - Lyra-Dorian and Denon DL-160
    PS Audio GCPH phono pre
    Sunfire CG 200 X 5
    Sunfire CG Sig 405 X 5
    OPPO BDP-83 SE
    SDA SRS 1.2TL Sonicaps and Mills
    Ctr CS1000p
    Sur - FX1000 x 4
    SUB - SVS PB2-Plus

    Workkout room:
    Sony Bravia XBR- 32-Inch 1080p
    Onkyo TX-DS898
    GFA 555
    Yamaha DVD-S1800BL/SACD
    Ft - SDA 1C

    Not being used:
    RTi 38's -4
    RT55i's - 2
    RT25i's -2, using other 2 in shop
    LSI 15's
    CSi40
    PSW 404
  • mrbironmrbiron Posts: 4,400
    I see a LOT of sheetrock.
    Can we get a glimpse at the rest of the space?
    Zu Audio Omen MK-1B's, Peachtree Decco65, Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, Zu Mission SC's, HTPC, One, Bottlehead Reduction & Crack w/Speedball
  • ZLTFULZLTFUL Posts: 4,165
    Lol. That's only half of what's left. The rest of the 5/8" sheets are still in the garage.
    Theater is getting 2 layers of 5/8" while the outside wall between the bar and theater is getting 2 layers of 1/2".

    I will see about getting some pics today but it is currently very messy down there.
    "Some people find it easier to be conceited rather than correct."

    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
    2 Channel: Silverline Audio Sonatina MKI, Monitor 5 Series II, DIY Seas based bookies
    LR 2 Channel: LSi7, DSW-MP2000
    HT: JTR Triple 8 LCRs, DIYSG Volt 8LX Surrounds, DIYSG Volt 6LX Atmos, 6 SI HT-18D2 Subs
    Guest BR 2 Channel: Swans D1080MKII
    Deck: Pyle BT Speaker pair with upgraded woofers
  • mrbironmrbiron Posts: 4,400
    It's not messy, its organized chaos. ;)

    Why not stick with a single layer of 5/8 on the bar wall? I'm not really UP on my STC ratings but i wonder what the difference between 2 layers of 1/2" and 1 layer of 5/8 would be? If you soundbatt the cavity, i think the extra 1/2" is moot.

    You're looking at a rating of somewhere in the 60-65 area which means you could be listening to 100db in your HT and only 30db would escape....That's going to be preeeeeetty quiet. :p
    Zu Audio Omen MK-1B's, Peachtree Decco65, Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, Zu Mission SC's, HTPC, One, Bottlehead Reduction & Crack w/Speedball
  • ZLTFULZLTFUL Posts: 4,165
    I will have a total of 6 18 subs running off of a possible 14,000 watts of class D amplification. The rear wall is a staggered 6" bar side stud, 3.5" theater side stud clip isolated wall. There is R19 batts on the bar side, R11 on the theater side with a ~2.5" air gap between.

    My goal is an STC in the neighborhood of 70-73. And my wife was adamant about the bar and theater not interfering with each other's enjoyment.
    "Some people find it easier to be conceited rather than correct."

    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
    2 Channel: Silverline Audio Sonatina MKI, Monitor 5 Series II, DIY Seas based bookies
    LR 2 Channel: LSi7, DSW-MP2000
    HT: JTR Triple 8 LCRs, DIYSG Volt 8LX Surrounds, DIYSG Volt 6LX Atmos, 6 SI HT-18D2 Subs
    Guest BR 2 Channel: Swans D1080MKII
    Deck: Pyle BT Speaker pair with upgraded woofers
  • mikeyb128mikeyb128 Posts: 2,455
    ZLTFUL wrote: »
    I will have a total of 6 18 subs running off of a possible 14,000 watts of class D amplification. The rear wall is a staggered 6" bar side stud, 3.5" theater side stud clip isolated wall. There is R19 batts on the bar side, R11 on the theater side with a ~2.5" air gap between.

    My goal is an STC in the neighborhood of 70-73. And my wife was adamant about the bar and theater not interfering with each other's enjoyment.

    Holy kcuf!
    2 channel:
    Bryston 4B3, Bryston BDA3, Cary SLP03, Shanling CDT1000SE with parts conneXion level 2 mods, Nottingham analogue ace space 294, soundsmith Carmen MKii , Eastern Electric minimax phono pre, Core power technologies balanced power conditioner, Akiko Corelli power conditioner with Akiko Audio HQ power cable, Nordost heimdall 2, Frey 2, interconnects, speaker and power cables, Focal Electra 1028 BE 2, Auralic Aries mini, Black diamond racing cones, ingress audio level 1 roller blocks, JL Audio E110 with Auralic subdude, Primacoustics room treatments.
    Theater:
    Focal Aria 926,905,CC900, SVS PB ultra x2. Pioneer Elite SC85, Oppo BDP93, Panamax M5400PM, Minix neox6, Nordost Blue heaven LS power cables.

  • EndersShadowEndersShadow Posts: 14,812
    mikeyb128 wrote: »
    ZLTFUL wrote: »
    I will have a total of 6 18 subs running off of a possible 14,000 watts of class D amplification. The rear wall is a staggered 6" bar side stud, 3.5" theater side stud clip isolated wall. There is R19 batts on the bar side, R11 on the theater side with a ~2.5" air gap between.

    My goal is an STC in the neighborhood of 70-73. And my wife was adamant about the bar and theater not interfering with each other's enjoyment.

    Holy kcuf!

    Still not enough subs IMHO........ Need a front baffle wall of nothing but 21's or 32's... THEN we are talking lol.....

    Ryan.... when you get ready for opening night, give me a heads up. I will see about coming out for it, and also throw together a invite for you to print/mail/post for others....

    Make it a red carpet event.... I could even print out a fake backdrop like the Oscars to take photos with hehehe....
    "....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963)
  • mrbironmrbiron Posts: 4,400
    ZLTFUL wrote: »
    My goal is an STC in the neighborhood of 70-73. And my wife was adamant about the bar and theater not interfering with each other's enjoyment.

    Wow....i know whose basement i'm going to when i want to start hacking people apart. :p
    I thought my quick math was pretty close but i might be missing something. Are you doing one wall or two? Are you fully installing acoustic panels to cover the 100% of the walls?

    Sorry for the questions. I just want to have something to fall back on when the time comes for me to build a better HT room. ;)
    Zu Audio Omen MK-1B's, Peachtree Decco65, Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, Zu Mission SC's, HTPC, One, Bottlehead Reduction & Crack w/Speedball
  • EndersShadowEndersShadow Posts: 14,812
    edited August 18
    mrbiron wrote: »
    Sorry for the questions. I just want to have something to fall back on when the time comes for me to build a better NURSERY room. ;)

    Fixed it for you @mrbiron

    "....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963)
  • lightman1lightman1 Posts: 8,595
    ZLTFUL wrote: »
    I will have a total of 6 18 subs running off of a possible 14,000 watts of class D amplification. The rear wall is a staggered 6" bar side stud, 3.5" theater side stud clip isolated wall. There is R19 batts on the bar side, R11 on the theater side with a ~2.5" air gap between.

    My goal is an STC in the neighborhood of 70-73. And my wife was adamant about the bar and theater not interfering with each other's enjoyment.

    And she'll beat mine and Ryans beehind for building it wrong. She's got knife skillz too.
  • mrbironmrbiron Posts: 4,400
    mrbiron wrote: »
    Sorry for the questions. I just want to have something to fall back on when the time comes for me to build a better NURSERY room. ;)

    Fixed it for you @mrbiron

    No more children my friend.....at least not that have my genes.
    Remember, you and i share a common bond with being in the "Two Daughters Club" or as i like to call it...F^&*3d.
    Zu Audio Omen MK-1B's, Peachtree Decco65, Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, Zu Mission SC's, HTPC, One, Bottlehead Reduction & Crack w/Speedball
  • EndersShadowEndersShadow Posts: 14,812
    Agreed lol....
    "....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963)
  • ZLTFULZLTFUL Posts: 4,165
    Room within a room.
    2 walls are adjacent to outer concrete walls. The other 2 walls are essentially 3 walls thick with staggered studs and double drywall on both outer faces. Green glue between layers in the theater, both walls and ceilings.
    The subfloor above the theater is getting 2 layers of drywall with green glue between both subfloor and drywall and then both layers of drywall in each joist bay. R19 in the ceiling.

    Room treatments will be a best of scenario once the "bunker" is finished and I can measure the response of the room. But a combo of absorption and diffusion.

    Doors will be a pair of solid core communicating doors with weather strip and mechanical thresholds.

    The risers and stage will be configured as bass traps. With both rows of seating being suspended and only the "pit" between the first riser and the stage being on top of the concrete (although, I will most likely do dricore for that.
    "Some people find it easier to be conceited rather than correct."

    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
    2 Channel: Silverline Audio Sonatina MKI, Monitor 5 Series II, DIY Seas based bookies
    LR 2 Channel: LSi7, DSW-MP2000
    HT: JTR Triple 8 LCRs, DIYSG Volt 8LX Surrounds, DIYSG Volt 6LX Atmos, 6 SI HT-18D2 Subs
    Guest BR 2 Channel: Swans D1080MKII
    Deck: Pyle BT Speaker pair with upgraded woofers
  • mrbironmrbiron Posts: 4,400
    w00f.
    We do separated demising walls in our buildings as well. One big difference is in between the 2 studded walls, we have a layer of plywood but that is primarily for "shear" forces on the building. You can't hear anything when complete.

    Sounds like fun. Pun INTENDED!

    The only two changes i would have made would be to add resilient channel to the ceiling to decouple the drywall from your floor joists for noise/bass transmission, AND don't buy into drywall glue, on your next go around of course.

    POSTS MORE PICTURES DAMNIT!!!! :p
    Zu Audio Omen MK-1B's, Peachtree Decco65, Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, Zu Mission SC's, HTPC, One, Bottlehead Reduction & Crack w/Speedball
  • lightman1lightman1 Posts: 8,595
    Resilient channel is in the house, Fredrique. Fancy little de-couple system.
    Looks like neoprene isolation boots to hold the track in place away from the bottom of the TGI joists.

    Ryan can elaborate.
  • ZLTFULZLTFUL Posts: 4,165
    Clips and channel is on the menu for the ceiling. I am doing it a bit differently so as to not give up the head room...clips recessed so that the drywall is ~1/2" below the original joists.

    Doing a layer of plywood inside the walls...or any "sealed" mass really would cause a triple leaf effect.
    "Some people find it easier to be conceited rather than correct."

    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
    2 Channel: Silverline Audio Sonatina MKI, Monitor 5 Series II, DIY Seas based bookies
    LR 2 Channel: LSi7, DSW-MP2000
    HT: JTR Triple 8 LCRs, DIYSG Volt 8LX Surrounds, DIYSG Volt 6LX Atmos, 6 SI HT-18D2 Subs
    Guest BR 2 Channel: Swans D1080MKII
    Deck: Pyle BT Speaker pair with upgraded woofers
  • ThortonThorton Posts: 981
    Holy Cow. Hope you have a good dental plan and chiropractor because that room should jar everything loose and in the wrong direction. How big is the room?
    _____________________________________________________________________________________________
    Source: SONOS Music System, DAC: W4S DAC-2, Pre/Pro: Marantz AV8801, Amp1: W4S MC-5, AMP2: W4S MMC-7, Front: Salk SoundScape 8's, Center: Salk SoundScape C7, Surround: Polk FXIA6, Surround Back: Polk RTIA9, Subs: 2 - Polk DSW PRO660WI, IC & Speaker Cables: Signal Cable, Room Treatments: GIK Acoustics
  • mrbironmrbiron Posts: 4,400
    ZLTFUL wrote: »
    Clips and channel is on the menu for the ceiling. I am doing it a bit differently so as to not give up the head room...clips recessed so that the drywall is ~1/2" below the original joists.

    Doing a layer of plywood inside the walls...or any "sealed" mass really would cause a triple leaf effect.

    Nice!!! Isolation clips on the RC1 channel is legit. Glad to see you know drywall screw spacing. Can't wait to see your corner bead :p

    We need the plywood for structural requirements on our end. Would be a little overkill...

    Pictures...don't make me ask a 45th time.

    Lightman, I'm holding up a finger for you and no, it's not NOT my middle finger.
    Zu Audio Omen MK-1B's, Peachtree Decco65, Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, Zu Mission SC's, HTPC, One, Bottlehead Reduction & Crack w/Speedball
  • ZLTFULZLTFUL Posts: 4,165
    Sorry for the delay on pics. Working this evening so I have been focused on that.

    You can check out the weak start to my build thread here...
    http://www.avsforum.com/forum/19-dedicated-theater-design-construction/2831929-blank-slate-cinema-macgillvray-pub-build-thread.html
    "Some people find it easier to be conceited rather than correct."

    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
    2 Channel: Silverline Audio Sonatina MKI, Monitor 5 Series II, DIY Seas based bookies
    LR 2 Channel: LSi7, DSW-MP2000
    HT: JTR Triple 8 LCRs, DIYSG Volt 8LX Surrounds, DIYSG Volt 6LX Atmos, 6 SI HT-18D2 Subs
    Guest BR 2 Channel: Swans D1080MKII
    Deck: Pyle BT Speaker pair with upgraded woofers
  • westmassguywestmassguy Posts: 5,768
    Looks like a sweet build!
    Home Theater/2 Channel:
    Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
    Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
    Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
    Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
    Pioneer Elite VSX-72TXV, Carver PM-350, SVS PB2-Plus Subwoofer
    Cables: Speaker: Furez 10/2 with GLS Locking Banana Plugs
    Interconnect: Furez 10/2 with SpeakONs
    ICs: Custom Furez by Douglas Connections
    Den:
    Bose 901 Series II Continentals Restored, Re-Built Equalizer with Elna Silmic IIs, Sonicaps, and Silver Mica Caps
    Carver CT-3 Pre, Carver PM-600

    dhsspeakerservice.com/
    Now Carrying Gimpod's Custom SDA Circuit Boards

    "And keep her under 70, would you, huh? Betty likes a slow ride"
  • scubalabscubalab Posts: 1,932
    Pfffft... build a REAL sub Ryan...

    ctzmf49s29ol.jpg

    ;)
  • ZLTFULZLTFUL Posts: 4,165
    I don't have an air hole or I would!
    "Some people find it easier to be conceited rather than correct."

    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
    2 Channel: Silverline Audio Sonatina MKI, Monitor 5 Series II, DIY Seas based bookies
    LR 2 Channel: LSi7, DSW-MP2000
    HT: JTR Triple 8 LCRs, DIYSG Volt 8LX Surrounds, DIYSG Volt 6LX Atmos, 6 SI HT-18D2 Subs
    Guest BR 2 Channel: Swans D1080MKII
    Deck: Pyle BT Speaker pair with upgraded woofers
  • DSkipDSkip Posts: 13,519
    I hope that's an Amsoil box.
    audiothesis.com/

    Speakers: Usher: CP-6311, Be-10, T-515; Rosso Fiorentino: Elba, Fiesole, Volterra; Polk: T50, Signature S60, S55, S35, S30, S20, S15, RTA 15tl, Sonner Audio Allegro Unum, iFi LS3.5
    Preamps: Shuguang S200MK, Dayens Ampino, Parasound P5
    Amps: Shuguang S845MK, Dayens Ampino Monoblocks, Parasound A23
    Integrateds: Dayens Ampino, Triode Corporation TRV-88SER, MastersounD: Dueventi, Compact 845, Evolution 845; North Star Design Blue Diamond
    Sources: AURALiC Aries, AURALiC Altair, Denon HEOS Link, North Star Design: Magnifico, Supremo, Incanto, Intenso, Venti
    Cabling: Wireworld
    TV: Sony XBR-75X940C
  • ZLTFULZLTFUL Posts: 4,165
    edited October 1
    Spent the last week prepping and painting all 6 sub enclosures, 6 DIYSG Volt 8LXs in slanted ported enclosures and 4 Volt 6LXs in sealed Atmos enclosures.

    81uhml3v05er.jpg
    w5oibrvwvxwj.jpg
    wtiw6jklgmhq.jpg
    sqptz5lkk683.jpg
    "Some people find it easier to be conceited rather than correct."

    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
    2 Channel: Silverline Audio Sonatina MKI, Monitor 5 Series II, DIY Seas based bookies
    LR 2 Channel: LSi7, DSW-MP2000
    HT: JTR Triple 8 LCRs, DIYSG Volt 8LX Surrounds, DIYSG Volt 6LX Atmos, 6 SI HT-18D2 Subs
    Guest BR 2 Channel: Swans D1080MKII
    Deck: Pyle BT Speaker pair with upgraded woofers
  • mhardy6647mhardy6647 Posts: 15,060
    ^^^ That looks like some enemy alien army building up to attack Earth.
    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

  • EndersShadowEndersShadow Posts: 14,812
    Looks great.... know it sucked balls lol...

    Understand why you needed a fancy night out on the town!
    "....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963)
  • DSkipDSkip Posts: 13,519
    Worst paint job I've seen. Not a kitty anywhere to say hello to!
    audiothesis.com/

    Speakers: Usher: CP-6311, Be-10, T-515; Rosso Fiorentino: Elba, Fiesole, Volterra; Polk: T50, Signature S60, S55, S35, S30, S20, S15, RTA 15tl, Sonner Audio Allegro Unum, iFi LS3.5
    Preamps: Shuguang S200MK, Dayens Ampino, Parasound P5
    Amps: Shuguang S845MK, Dayens Ampino Monoblocks, Parasound A23
    Integrateds: Dayens Ampino, Triode Corporation TRV-88SER, MastersounD: Dueventi, Compact 845, Evolution 845; North Star Design Blue Diamond
    Sources: AURALiC Aries, AURALiC Altair, Denon HEOS Link, North Star Design: Magnifico, Supremo, Incanto, Intenso, Venti
    Cabling: Wireworld
    TV: Sony XBR-75X940C
  • westmassguywestmassguy Posts: 5,768
    Very nice!
    Home Theater/2 Channel:
    Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
    Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
    Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
    Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
    Pioneer Elite VSX-72TXV, Carver PM-350, SVS PB2-Plus Subwoofer
    Cables: Speaker: Furez 10/2 with GLS Locking Banana Plugs
    Interconnect: Furez 10/2 with SpeakONs
    ICs: Custom Furez by Douglas Connections
    Den:
    Bose 901 Series II Continentals Restored, Re-Built Equalizer with Elna Silmic IIs, Sonicaps, and Silver Mica Caps
    Carver CT-3 Pre, Carver PM-600

    dhsspeakerservice.com/
    Now Carrying Gimpod's Custom SDA Circuit Boards

    "And keep her under 70, would you, huh? Betty likes a slow ride"
  • mrbironmrbiron Posts: 4,400
    I just want it done!!! :D
    Zu Audio Omen MK-1B's, Peachtree Decco65, Bryston BDA-2, Cheap TT, PS Audio UPC200, PS Audio AC3's, Zu Mission SC's, HTPC, One, Bottlehead Reduction & Crack w/Speedball
  • ZLTFULZLTFUL Posts: 4,165
    mrbiron wrote: »
    I just want it done!!! :D

    You and me both.
    "Some people find it easier to be conceited rather than correct."

    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
    2 Channel: Silverline Audio Sonatina MKI, Monitor 5 Series II, DIY Seas based bookies
    LR 2 Channel: LSi7, DSW-MP2000
    HT: JTR Triple 8 LCRs, DIYSG Volt 8LX Surrounds, DIYSG Volt 6LX Atmos, 6 SI HT-18D2 Subs
    Guest BR 2 Channel: Swans D1080MKII
    Deck: Pyle BT Speaker pair with upgraded woofers
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