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  • Dr. Spec
    Dr. Spec Posts: 3,780
    edited July 2003
    What's there to feel stupid about? This is all in fun, and you haven't even tried it yet with the 150s, so nothing ventured nothing lost. It's NBD. Now you know what to look for when you do try it. It's at 3:58 on the EE version.

    Doc
    "What we do in life echoes in eternity"

    Ed Mullen (emullen@svsound.com)
    Director - Technology and Customer Service
    SVS
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  • Airplay355
    Airplay355 Posts: 4,298
    edited July 2003
    k...i will definetely have to look for that as soon as i get the LOTR on dvd, and ill get the EE version. i hope i atleast hear it with the 150's. thanks :D
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  • goingganzo
    goingganzo Posts: 2,793
    edited July 2003
    you will hear it but it might not be that loud and watch out for botoming. if i was going 2 channel and no sub and staying with the rt line i would have got the 150 but i am a ht guy in the house and i got the best of both worlds with the 800. if you want you can buld your self a good sub for prety cheap around 300-400 and it will rival just about anything you can buy for under a grand
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  • Ceruleance
    Ceruleance Posts: 991
    edited July 2003
    Originally posted by goingganzo
    if you want you can buld your self a good sub for prety cheap around 300-400 and it will rival just about anything you can buy for under a grand

    Including SVS?
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  • Dr. Spec
    Dr. Spec Posts: 3,780
    edited August 2003
    Originally posted by Ceruleance
    Including SVS?

    Yes. A large-volume, sufficiently ported DIY subwoofer with a Tempest or AV15 and 500 watts will equal or slightly exceed the output and extension of a PC-Plus for about 2/3 the cost.

    If you have the skills, time, and patience, DIY cannot beat. You exchange sweat equity for $$.

    Gonzo has a humongous DIY subwoofer with four 4" flared vents and two AV15's and 1000 watts of power for about $1000. It will handily outperform my $1200 PB2+. I think he has hit close to 130 dB with it. It is built into the space under his stairwell.

    Among commercial sub makers, SVS has no peer in bang for the buck. HSU is a close second, IMO.

    Doc
    "What we do in life echoes in eternity"

    Ed Mullen (emullen@svsound.com)
    Director - Technology and Customer Service
    SVS
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  • dlew308
    dlew308 Posts: 530
    edited August 2003
    I'm in with my sonotube :)
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  • Airplay355
    Airplay355 Posts: 4,298
    edited August 2003
    i dont know if i have the skills to build a sub...i definetely have the patience but im not sure about the smarts easier...the though is intimidating. how hard is it anyway?
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  • tryrrthg
    tryrrthg Posts: 1,896
    edited August 2003
    I feel the same way as you airplay but I would LOVE to do it. I thinking building a sonotube is the quick and easy way of doing DIY subs. From my understanding they perform quite well too. With a sonotube you just have to cut the tube to the right length to get the correct volume. here's a handy calcuator I've been messing around with.

    calculator

    diy sonosub stuff

    a step by step guide with pictures
    Sony KDL-40V2500 HDTV, Rotel RSX-1067 Receiver, Sony BDP-S550 Blu-ray, Slim Devices Squeezebox, Polk RTi6, CSi3 & R15, DIY sub with Atlas 15
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  • dlew308
    dlew308 Posts: 530
    edited August 2003
    It's not hard to do, time & patience is needed.
    I have zero woodshop skills, it came out decent.
    It's not pro looking as a lot of the builders out there but it works like it should :)
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  • Ron-P
    Ron-P Posts: 8,519
    edited August 2003
    I built a 177L Sonosub for just above $400 (amp and everything incluced in that). It was sealed, then the Doc jumped in and helped me port it. Ended up putting in 2-17" flared ports tuning the sub to about 18Hz or so. Porting that thing was like buying and entirely new sub. Coupled with my small HT room it will knock your teeth out if you let it.

    Never did get the chance to test the ring scene last night, I'll do it tonight.


    Peace Out~:D
    If...
    Ron dislikes a film = go out and buy it.
    Ron loves a film = don't even rent.
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  • burdette
    burdette Posts: 1,194
    edited August 2003
    I built my 144L sonotube AV12, with 250W PE plate amp, for right around $300 or so, but I got a kickin' deal on the driver because it had some very fine imprefictions in the coating on the cone.

    I bought two 4" flared ends and used PVC pipe for the port (single 4", about 19" long). The ports like Ron-P used were very nice (more expensive), but simply too short.

    I had to buy a full 12' of tube for $30, and had to buy an 8' section of pipe (maybe $5-6 at Lowe's).

    If two people lived close enough to share a tube, you'd save some money. I think.. think.. some places carry tubes in 6' or maybe even 4' lengths, but not around here. I have another 4' piece that is awaiting a time when I want to put more work into the way this thing looks. If is fine now, but not really formal living room finish.

    The ONLY real 'necessary' trick for a good sonotube is being able to cut large perfect circles in MDF and plywood, and being able to fine-tune that cutting to get a perfect fit. But the only thing you really need for that is a router and a homemade circle cutter. I totally brain-farted my first circle and traced an end of the tube... then wondered 'why is this thing sorta egg shaped?' Well, the tubes aren't PERFECT circles, especially not on the ends, until you get a perfect-circle support in there, then they shape up fine. But they are not suitable to use as a master.

    I didn't invest in the usual cloth sock, I just emptied all the old cans of spray paint on it, ending with a brown and black pattern that was described on this forum as looking like a tiger. No mistaking that it is homebuilt.. but I actually kind of like that. The fuzzy nugget factor of this thing is pretty high.
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  • tryrrthg
    tryrrthg Posts: 1,896
    edited August 2003
    Burdette (or anyone else who might know), do you know what frequency the "rumble filter" kicks in on the PE 250W plate amp?
    Sony KDL-40V2500 HDTV, Rotel RSX-1067 Receiver, Sony BDP-S550 Blu-ray, Slim Devices Squeezebox, Polk RTi6, CSi3 & R15, DIY sub with Atlas 15
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  • Airplay355
    Airplay355 Posts: 4,298
    edited August 2003
    maybe anything subsonic? since rumble would imply feeling and most ppl cant hear anything below 20, just feel it
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  • Ceruleance
    Ceruleance Posts: 991
    edited August 2003
    What are the best resources for DIY subwoofer building?

    If you could provide a couple sites, ranging from:

    "put the triangle plug in the triangle hole" to advanced discussions on the physics of enclosures, etc. etc.


    that would be great. I am trying to decide if I want to go DIY for the sub I will need in my 2-channel rig for next year. I'll be carting it to college and tossing it in the corner of an otherwise terribly appointed dorm room so the aesthetics of the thing arent important.
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  • dlew308
    dlew308 Posts: 530
    edited August 2003
    The best place to read about DIY subs is here:
    http://www.hometheaterforum.com/htforum/forumdisplay.php?s=&forumid=22
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  • goingganzo
    goingganzo Posts: 2,793
    edited August 2003
    there is alot of knollage in the posts. serch them first then ask questons that you cant fing ansers to
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  • Airplay355
    Airplay355 Posts: 4,298
    edited August 2003
    ne1 have a nice easy set of step by step instructions?
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  • dlew308
    dlew308 Posts: 530
    edited August 2003
    Lots of links here:
    http://members.tripod.com/~terryctheater/shivaphotoalbum/page12.html
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  • Airplay355
    Airplay355 Posts: 4,298
    edited August 2003
    i really like the stryke stuff, but their site seems to be down or something...ganzo can i have ur sub? lol
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  • goingganzo
    goingganzo Posts: 2,793
    edited August 2003
    well do you have enough room? it is 4' by 4' by 2' and a cool grand? i could have made it for about 700dollars but wanted 500rms a side insteas of 350rms.
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  • goingganzo
    goingganzo Posts: 2,793
    edited August 2003
    do you want to buld a sono sub or a box?
    ported pr or sealed?
    pro amp or plare amp?


    anser these questons and i will hwlp you out.
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  • Airplay355
    Airplay355 Posts: 4,298
    edited August 2003
    well i dont really have the cash to be buildind a sub right now, its just me exploring my options so when i do go to buy a sub i know whats out there...and no i dont have the room, my room is 15x12x8...i was origionally going to just buy an svs pci 20-39, is there anything out there that would match or exceed that in performance for less money?
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  • dlew308
    dlew308 Posts: 530
    edited August 2003
    Dr. Spec:
    Any idea of the bass hit in Gladiator during the battle with the tigers, when the tiger and him fall to the ground? I didn't notice it before my sonotube, you can feel a thud at impact, quite nice :)
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  • goingganzo
    goingganzo Posts: 2,793
    edited August 2003
    you can do a tempest for around 450 with everything. tube style
    av15 will run a bit more.
    av12 will be a bit more than the tempest but will have about the same output but in a smaller encloser.
    datyon dvc15 a little cheaper and a little less output.
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  • Dr. Spec
    Dr. Spec Posts: 3,780
    edited August 2003
    Any idea of the bass hit in Gladiator during the battle with the tigers, when the tiger and him fall to the ground? I didn't notice it before my sonotube, you can feel a thud at impact, quite nice

    I see you are starting to realize the benefits of genuine deep extension - nice pick.

    I would estimate that scene is centered around 25 Hz, and sounds very much like the ring drop (ironically), but at a lower amplitude. I played it a -8 and got my tee shirt to waffle.

    BTW, the soundtrack to Gladiator contains TONS of low bass, particularly in Track 13. Highly recommended.

    I love that movie; one of my all time favorites.

    Doc
    "What we do in life echoes in eternity"

    Ed Mullen (emullen@svsound.com)
    Director - Technology and Customer Service
    SVS
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  • Airplay355
    Airplay355 Posts: 4,298
    edited August 2003
    ganzo

    would those be as nice as an svs 20-39 pci....and worth the time to build? or because im such an amature i should just buy the svs
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  • burdette
    burdette Posts: 1,194
    edited August 2003
    Air,

    You're going to save money (to get the same performance) doing it yourself assuming you can do some yourself. If you have to pay someone to do the work, then the savings may evaporate.

    There are myriad sites on the net for tube subs as well as conventional. Also several good freeware box-design programs you can download. If you buy a known driver (like a Stryke, Dayton or Adire) you will most certainly find a site or two, for each driver, that explains how someone else did it, right down to the size of the screws. You wouldn't HAVE to do any of the calculations if you didn't want to. Just the build. Adire provides several different alignments and enclosure designs for each of their drivers right on their site. They obviously want people to get it right.

    There is a LOT more first-hand experience right here on the Polk site than there was even a year ago. And the Parts Express forum has a LOT of guys who have built Dayton-based subs. I didn't happen to like the Home Theater forum, but obviously there is a lot of experience there, too. Plus, all these DIYers are usually more than happy to help another DIYer get it right.
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  • Airplay355
    Airplay355 Posts: 4,298
    edited August 2003
    anyoen have a specific sub i could build that would rival the svs 30-29 pci? i really cant do the calculatiosn myself, i dont have the knowledge but i might be able to build a sub. the stryke and adire subs look nice. any suggestions? how hard is it really? and i want something that looks nice not just some wood nailed together with a driver in it.
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  • Dr. Spec
    Dr. Spec Posts: 3,780
    edited August 2003
    Try a kit from Acoustic Visions instead of building from scratch. They have some nice stuff and Kyle will help you out. I always recommend them if DIY looks like an option and you are a newbie and unsure of your woodworking skills and want it to look nice. Try Stryke Audio too.

    Doc
    "What we do in life echoes in eternity"

    Ed Mullen (emullen@svsound.com)
    Director - Technology and Customer Service
    SVS
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  • goingganzo
    goingganzo Posts: 2,793
    edited August 2003
    i think the av12 will outperform a pci series but not the pc+ but if you upgrade to the av15 will be beter than the pc+ 1-3db depending on tuneing and power.


    i would recomend the av15 over the 12 beacues you get alot more for not that much more.
    if you go av15 with a 375 watt plate amp and tube you will be in at right around the 600
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