The 1.2TL, Project Monolith

Options
1…6791112

Comments

  • ptrooper
    ptrooper Posts: 739
    edited August 30
    Options
    Gardenstater wrote: »
    It always amazes me when it comes to audio that you don't know what you're missing until you know it.

    BH5 isn't supposed to effect the enclosure volume because of the floating vinyl layer with the closed cell underneath. That floating layer tends to help with preventing sound transmission prevention. The No-Rez stuff does away with that layer.

    Thanks @Gardenstater , I guessed wrong 😎thx for the heads up ! Appreciated.

    I wanna get some serious stiffness into this baffle , I beleive ,decent sized dowel cup base plates should do it .
    Glued and screwed
    The monoliths are really starting to wake up .

    Have you heard of any over bracing dramas?

    Cheers mate
    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • xschop
    xschop Posts: 5,837
    Options
    I've done a few enclosures now, and the best way is measure front to back with a garment tape.

    Cut the dowel 1/16" longer, then belt sand til it is snug. Pre-glue enclosure where they will reside and press in to position. After that layer dries, go back and smear on a filet around the perimeter.
    Then shake those 1.2's boss.
    Don't take experimental gene therapies from known eugenicists.
    · Share on Facebook
  • xschop
    xschop Posts: 5,837
    Options
    Gardenstater wrote: »
    It always amazes me when it comes to audio that you don't know what you're missing until you know it.

    BH5 isn't supposed to effect the enclosure volume because of the floating vinyl layer with the closed cell underneath. That floating layer tends to help with preventing sound transmission prevention. The No-Rez stuff does away with that layer.

    There have been a few ways people have done the braces, joebass3 made them out of square stock with v-blocks on the front and back so that the braces could be screwed into them. I think xschop and tool just power grabbed them into place with a slight clearance I guess, and SCompracer used a pocket hole jig and screwed and glued them into the front and back. I think another way might be with one end cut short (I'd use square stock with the corners rounded off at the router table) and at a slight angle and you could have a wedge that jams it and you could (maybe?) even listen to the configuration before gluing everything in place or maybe just tack glue with a few dabs of super glue that could be cut through (or just run a JB Weld fillet around everything) for the permanent glue. I'd use epoxy but I know that is overkill. I like overkill.

    https://www.youtube.com/shorts/YTGGRGbOGNs

    I found my old tech drawing of removable pre-loaded compression rod device I drew up when I built those Tsi's.
    Would be spendy for a set of 1.2's however, why I suggested the dowels and some Power Grab.

    Don't take experimental gene therapies from known eugenicists.
    · Share on Facebook
  • Gardenstater
    Gardenstater Posts: 4,944
    Options
    The Jean Maurer speakers have that system, but with a woofer that is "isolated" from the baffle with soft rubber (probably sorbothane or the like) and then they use the "tension rod" (compression really!) that contacts the driver and pushes on it and in turn the driver pushes on the other end of the tension rod which is adjustable for length at the rear of the speaker which is a sand filled sandwich deal with other layers designed to dampen the driver's motion. That's the only speaker I've seen that on so far.
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Onkyo A-8017 integrated
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
    · Share on Facebook
  • xschop
    xschop Posts: 5,837
    Options
    Mine are designed from alloy hex rod to save machine time and have a pointed divet for placement accuracy. They'd have to be done on lathe.
    Don't take experimental gene therapies from known eugenicists.
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    edited August 30
    Options
    https://www.youtube.com/watch?v=XBETVhHpcPk
    No limit.
    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • xschop
    xschop Posts: 5,837
    Options
    I updated drawing for hand twist rod dowels and a locknut. Most of the vintage enclosures would only need two maybe three of them.

    cq89fkr5lt42.jpg
    Don't take experimental gene therapies from known eugenicists.
    · Share on Facebook
  • motorstereo
    motorstereo Posts: 2,427
    Options
    Why not a turnbuckle? Instead of gluing perhaps secure a nut with ears or washers attached on the outside with screws? Twist the the turnbuckle to the desired tightness and call it a day. If there's a thought of the metal being sonically reflective it's easy enough to put foam pipe insulators over them. Just a thought.
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    Options
    motorstereo wrote: »
    Why not a turnbuckle? Instead of gluing perhaps secure a nut with ears or washers attached on the outside with screws? Twist the the turnbuckle to the desired tightness and call it a day. If there's a thought of the metal being sonically reflective it's easy enough to put foam pipe insulators over them. Just a thought.

    Good to see the top paddock working,Deadset legends !To stop them making a racket, those buggers could just be hollow sand-filled jobs
    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    edited August 31
    Options
    xschop wrote: »
    I updated drawing for hand twist rod dowels and a locknut. Most of the vintage enclosures would only need two maybe three of them.

    cq89fkr5lt42.jpg

    Righto, now we're on the money. looks like you've got it sussed.
    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • xschop
    xschop Posts: 5,837
    Options
    motorstereo wrote: »
    Why not a turnbuckle? Instead of gluing perhaps secure a nut with ears or washers attached on the outside with screws? Twist the the turnbuckle to the desired tightness and call it a day. If there's a thought of the metal being sonically reflective it's easy enough to put foam pipe insulators over them. Just a thought.

    This simple design accomplishes the goal. Originally had a 3/4" hex rod drawn out, but a 1" round rod will seat by hand....Unless you're a girly-man.
    Don't take experimental gene therapies from known eugenicists.
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    edited August 31
    Options
    Lumin and switch at 110 hrs and <3
    https://www.youtube.com/watch?v=AIBv2GEnXlc
    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • xschop
    xschop Posts: 5,837
    Options
    ptrooper wrote: »
    xschop wrote: »
    I updated drawing for hand twist rod dowels and a locknut. Most of the vintage enclosures would only need two maybe three of them.

    cq89fkr5lt42.jpg

    Righto, now we're on the money. looks like you've got it sussed.

    https://www.youtube.com/watch?v=M2VBmHOYpV8
    Don't take experimental gene therapies from known eugenicists.
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    edited September 1
    Options
    https://www.youtube.com/watch?v=JQUE_kuyI04
    Another Aussie tester .
    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    edited September 1
    Options
    https://www.youtube.com/watch?v=qLrnkK2YEcE
    Aussie electronic band. Test track
    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    Options
    Last Aussie test track for the evening , the kiddies love this one at their medicated lazer light shows.

    https://www.youtube.com/watch?v=Tx9zMFodNtA
    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    edited September 1
    Options
    Good morning track to get you started
    https://www.youtube.com/watch?v=UqLRqzTp6Rk
    Still pondering the bracing . Pump it up!

    For a 270mm front-to-rear brace with a temperature swing from 18°C to 32°C linear expansion average data to consider for baffle stress:

    Aluminum: 0.087 mm (Highest expansion; risk of pushing/straining baffle joints at 32°C; prone to ringing)

    Steel: 0.045 mm (Half the expansion of aluminum; 3x stiffer than aluminum; heavy and needs damping)

    Hardwood (Longitudinal): 0.015 mm (Most thermally stable; matches wood/MDF cabinet behavior; excellent internal damping)

    Bottom Line: Hardwood expands 6x less than aluminium and 3x less than steel , making it the safest choice to avoid putting mechanical pre-stress on your speaker baffles.

    I know the expansion is really only minimal with 11 braces per enclosure but, mentally , I'd like to keep to the natural organic textured signiture the Mono's have!


    Like @Gardenstater stated, " I like overkill " This is what I am told I do with everything all the time.

    This is the "Duelund Monoliths" Motto

    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    Options
    Aussie Aussie Aussie
    https://www.youtube.com/watch?v=QQ7XJG0Z2ho
    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • xschop
    xschop Posts: 5,837
    Options
    Big question now is... Oak, fir, or maple, etc.?
    Don't take experimental gene therapies from known eugenicists.
    · Share on Facebook
  • SCompRacer
    SCompRacer Posts: 9,399
    edited September 1
    Options
    Threading wood dowel rods popped into my head changing a push broom handle. One pic shows a plastic coupling. Various size wood threading tools are available, 3/4," 1" and larger. Use two different size dowels, male and female threads. One could make threads longer/deeper for stability. Slobber glue on threads and tighten in place.

    edfmroc7xs4t.jpg
    mbbhm3l98o72.png
    8ao29oda78dg.png

    Salk SoundScape 8's * Audio Research Reference 3 * Bottlehead Eros Phono * Park's Audio Budgie SUT * Krell KSA-250 * Harmonic Technology Pro 9+ * Signature Series Sonore Music Server w/Deux PS * Roon * Gustard R26 DAC / Singxer SU-6 DDC * Heavy Plinth Lenco L75 Idler Drive * AA MG-1 Linear Air Bearing Arm * AT33PTG/II & Denon 103R * Richard Gray 600S * NHT B-12d subs * GIK Acoustic Treatments * Sennheiser HD650 *
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    edited September 2
    Options
    xschop wrote: »
    Big question now is... Oak, fir, or maple, etc.?

    Decisions decisions, MMMMMMMMMMM.
    Maple

    I was aloud out of my bump proof room today, with crayons .
    Excited, I also took my highly sensitive magic poker ,nasal clearance device and did some serious baffle testing ,I found the area crayoned in red to be grooving to the tunes with a little too much enthusiasm.

    The green area will be the completion of xschops,special series ,duelund Monolith MW rings <3 .

    I believe this area is also at an extra advantage, the dowel may bypass the BH5 on its due coarse to the rear baffle? Happy,Happy, joy,joy.


    Yes,I’m a lazy ba-t-rd, as we say down under , the less the Monoliths comes apart, the better,I feel.

    What do you think ? It’s a plan.
    xcwt587m5r5o.jpeg

    https://www.youtube.com/watch?v=AZmjE1ilpVk


    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • xschop
    xschop Posts: 5,837
    Options
    Knock it out.
    Where are the vibes settling at now?
    Don't take experimental gene therapies from known eugenicists.
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    edited September 2
    Options
    xschop wrote: »
    Knock it out.
    Where are the vibes settling at now?

    The area crayoned in red.. next to the tweeters ! the A 4 paper there was actually resting against the side of the tweeter bezels when,with my black crayon ,I did some frottage. :)

    Dowel Braces here will lock that tweeter array in rock solid. B)

    Its 1:30 pm here ,What are you doing awake, go back to sleep. :prchaakm07kt4.jpeg
    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • xschop
    xschop Posts: 5,837
    edited September 2
    Options
    Im working on my WOPL amp while its only 80.deg in garage lol.

    That should solve the issue.

    Forgot to add, fair dinkum.😉
    Don't take experimental gene therapies from known eugenicists.
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    edited September 2
    Options
    Time to go back to my room. Till tomorrow ,have a listen to this Aussie band.
    https://www.youtube.com/watch?v=RrxePKps87k
    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    edited September 2
    Options
    Couldn’t help myself another Aussie band in-between pondering the brace ,you like bass?
    https://www.youtube.com/watch?v=Y-y1rIGNbM4
    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    edited September 2
    Options
    Day 3 baffle test continues.
    For you Dr Who fans. This song reminds me of that old series ! Love the Lyrics!
    https://www.youtube.com/watch?v=w8KQmps-Sog
    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    edited September 2
    Options
    Lumin&LHY 140hours
    ❤️the tonal depth of everything just draws you into the music , there’s nothing I’ve listened too that sounds off or fatiguing ! I’m just amazed of the texture inside the dynamics of the SDA envelope.
    Studio quality all day long .
    Blows my mind to think what a top quality dac and amp are capable of bringing to the party?

    Dreaming Mola Mola gryphon.

    The braces will absolutely need to be installed without negative or positive pressure, unless the front baffle has warped over time ,which I have yet to look into.
    I’m still open minded ,in regards to the dowels material of choice!.

    Love the threaded timbre !

    Love the threaded lock nut dowel with manly twist , it reminds me of a shock absorber,I have visions of this fit being so tight here ,that it takes allot of force to compress, reminding me of the passive leak test procedure. Add glue to this chamber ,This would guarantee absolute neutral pressure until the glue sets and give room between two fixed surfaces <3 .


    Aussie band SDA tester.

    https://www.youtube.com/watch?v=Os3hahvPJIw

    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • ptrooper
    ptrooper Posts: 739
    Options
    https://www.youtube.com/watch?v=0nOGflqgBew
    VR3 SDA SRS 1.2TL Duelund Monoliths+VR31000va Dreadnaught +VR3 MM2 SDA cable, <3 ,Lumin u2x ,<-sfp fibre <-LHYas8 Pro+ Switch,Transparent Reference MM2 xlr,power and speaker cables.FTA Sinope SE usb.40 Amp power line for amp with earth stake&Faraday shield ,20 Amp power line for digital equipment ->shunyata 8 venom power board...Working on it!
    · Share on Facebook
  • SCompRacer
    SCompRacer Posts: 9,399
    edited September 2
    Options
    For you Dr Who fans.

    Since you brought it up, number 11, Matt Smith was my fav Dr. Who.

    5rdtc1nz3yt4.jpg

    Doctorin' the Tardis by The Timelords, KLF Communications. AKA the Justified Ancients of Mu Mu, the JAMs,...

    https://youtu.be/DsAVx0u9Cw4?si=1-YPjYKhVSDIdbPy



    Salk SoundScape 8's * Audio Research Reference 3 * Bottlehead Eros Phono * Park's Audio Budgie SUT * Krell KSA-250 * Harmonic Technology Pro 9+ * Signature Series Sonore Music Server w/Deux PS * Roon * Gustard R26 DAC / Singxer SU-6 DDC * Heavy Plinth Lenco L75 Idler Drive * AA MG-1 Linear Air Bearing Arm * AT33PTG/II & Denon 103R * Richard Gray 600S * NHT B-12d subs * GIK Acoustic Treatments * Sennheiser HD650 *
    · Share on Facebook