Vicoaster

Thanks Matt, I think that you are right, interesting that they made the switch to a new model number along with cosmetic changes...But did not keep the larger S-3 in the line.

Hey there, I already have a compliment of the original S series of Synergy speakers, my question is about the Surrounds in this post. I have a couple of pairs of S-2's, for a project I am gathering the pieces for I need another set. Obviously unless I can find a pair of used S-2's (which I am not adverse to), the used prices of the S-2 approach the cost a sale price for the S-20... I was thinking of simply buying a set of S-20's, so my questions are: The S-20 looks like the identical speaker except for the colour, the physical size and electrical specifications are the same? The material of the components and box, are they the same? Timbre or sonic match, is it the same? Regarding the tweeters, are they wired in-phase? S-20 Specs: Frequency Response: 83Hz-23KHz ± 3dB SENSITIVITY: 91dB @ 2.83V / 1m POWER HANDLING: 100W RMS / 400W Peak NOMINAL IMPEDANCE: 8 Ohms compatible Low Frequency Driver: 5.25" (13.3cm), IMG woofer ENCLOSURE TYPE: Sealed (WDST) INPUTS: Single binding posts HEIGHT: 6.85" (17.4cm) WIDTH: 14.3" (36.3cm) DEPTH: 5.5" (13.9cm) WEIGHT: 7lbs (3.2kg) MOUNTING: Keyhole Bracket FINISH: Black Ash vinyl Built From: 2010 S-2 Specs: Frequency Response: 83Hz - 23kHz +/-3dB SENSITIVITY: 91dB @ 2.83 volts/1 meter POWER HANDLING: 100 w (400 w peak) NOMINAL IMPEDANCE: 8 ohms TWEETER: Two 1" (2.5cm) aluminum dome tweeters HIGH FREQUENCY HORN: 2 x 5" (12.7cm) 90 x 60 Tractrix Horns WOOFER: 5.25" (13.3cm) woofer CROSSOVER FREQUENCY: 2500Hz ENCLOSURE TYPE: Sealed (WDST) DIMENSIONS: 6.85" (17.4cm) x 14.3" (36.3cm) x 5.5" (13.9cm) WEIGHT: 7lbs. (3.2kg) MOUNTING: Keyhole Bracket Built From: 2004 BUILT UNTIL: 2010 Thanks!

Peter, Yes, when Danley put the kits back out for sale I jumped right away, I had tried to buy a couple in Vancouver, but the seller wanted more then 2 new units already built directly from Danley! Then I found a un-completed kit in the US but it was so far away it would have taken a 3-day trip just to pick-it up... So now I have 2 on the way. I still have the drivers (Eminence LAB 12's) that I was going to use in the THT but their future fate is unknown right now. That is great news about the integration of REW with miniDSP, I need to read more about that now. Wow, 4 outputs, 2 for each input, that more then covers what I want to do, or may want to do in the future! The only specifications I am researching about the miniDSP is the balanced versus un-balanced versions, (powering a pro-audio Behringer EP4000) and the maximum output voltages that each of the miniDSP's can provide. The pro-audio amp needs 2.0vrms to be able to reach reach the rated output, and the website talks about the input sensitivity but the not the output voltages... What type of amplifier are you powering the THT with?

Yes, ordered from Hong Kong. Shipping is a standard $35 for North America; expensive for the weight but not outrageous. You can track it to your home within a week or so. I got the finished version and purchased the plugin only when I received the unit. What it can do varies a bit from plugin to plugin, but the 2-way advanced plugin allows you to set a steep high-pass filter on the crossover portion of the software, and up to six parametric EQs settings. There's no 20 Hz limit like on some Behringer units. It's easy to attempt to correct a frequency response curve within REW on a PC, export the designed PEQ filters in a file and load them into the miniDSP plugin software, add the high-pass and upload it all to the miniDSP via USB. This sounds like a good idea too, the programability of the unit looks impressive, as soon as I get a chance I will have to read more about this unit. I wa wondering if I would need 2 boards to control 2 sub channels? Did I read your comments about REW correctly, correct a freq. response curve and this will give you the PEQ files for the 6 available adjust points automatically? BTW, I still haven't had an opportunity to start the THT, I have the speakers but work has been very busy of late! Add to this a wrinkle in the sub department... somehow I managed to get 2 DTS-10's ordered and enroute to my location. [] Al

Peter, do you have to order this direct from DSP in Hong Kong, if so how did that go? Was it expensive? Did you get a single board?, I am still looking into EQ, IIRC these have 2 channels with up to 6 frequencies that can be adjusted per channel right?

Thanks for the feedback Peter, I is great to know how you feel the project turned out. Wise words about the low profile version, I have already bought the plans for the regular THT but placement and concealment have me considering the purchase of the LP plans, I could just lay a pair down under the screen the the LP version. The idea of a tapped horn still intrigues me, wished I had seen the DIY DTS-10 kit offered early last , still expensive as compared to the THT buy much better then the full retail cost. And although I have seen some plans for TH's none seem as well documented as the Tuba which kind leaves me wondering about the end result. It is tough enough to find the time to build a verified/tested design but to go for the unknown I just don't have the luxury of that much free time!

You know, you state something that we all (at least me) tend to forget, that it is the modern age of music and cinema that had brought ultra low bass, before that 20-30 Hz was considered quite low frequency... now we want it down to 10 Hz or lower! Correct me if I'm wrong, but the OP is going to be using this for HT. The LFE channel on many movie sound tracks has a ton of infrasonics on them. 10 Hz content is common. I've seen waterfall charts (AVS forum I believe) that have scenes from movies with sub 20Hz content. The list is amazingly long. 30 Hz is great for music but a sub that can reproduce virtually anything on a movies LFE track is a whole different beast. I believe that you are correct, Peter does have this in his HT but uses it for some music as well... As for the range that at HT sub needs to reach, no argumants there either, and I think you alluded to the fact that this brings a whole other set of challanges to the mix, not only from a physics standpoint but financial as well! []

You know, you state something that we all (at least me) tend to forget, that it is the modern age of music and cinema that had brought ultra low bass, before that 20-30 Hz was considered quite low frequency... now we want it down to 10 Hz or lower!

Peter, can you post a link for the post on the AVS forum for a in wall mounted Tuba? Thanks!

COOL! I can't wait to have 2 of these in my theatre! (although I may have to get the plans for the low-profile Tuba, it would be easier to lay them down onder the screen...)

Wow, it looks bigger then I thought, how wide is it again? Looking forward to the pictures, and the report of how it sounds, I wish I could get started on mine, I doubt it will be until next year now! [:$]

Looking good Peter, a lot more complex now seeing it from the side view! You mentioned taking out the screws, would there be a problem just leaving them in? I have built many speakers, usually I just leave them in place after the glue sets...

So is this the same one? Looks like it to me. http://www.diyaudio.com/forums/subwoofers/143714-lab12-tapped-horn.html Interesting comment in post #8... only good to 70-80Hz? Wasn't the inductor for 150 Hz rolloff? Besides if this is connected to the LFE channel most are low passed to 120 Hz. Either that or I could use the cossoever in the AVR or an electronic crossover. See this thread for some great pictures of the Danley: http://srforums.prosoundweb.com/index.php/m/500239/0/#msg_500239

I understand that the TH is supposed to go lower, it still might be a possiblilty for my project however the plan recently posted in this thread is very basic in it details, I little disconcerting when deciding over the Tuba HT... Also based on this information posted on Bill's Tuba HT site, the Tuba might get to the necessary frequencies anyway? Precisely how it was meant. The Tuba is more efficient but the TH goes lower......takes a lot to do 16 Hz. but there is content we never feel otherwise. Transformers Movie (first one) contains tons of 18 Hz. stuff to Klipsch commercial engineers use it to set up theaters, like Malco. Not impressed yet? Add in the cabin gain of an average room (12dB per octave below 30 Hz) and you can end up with flat response to 10Hz with 110dB sensitivity. Not even the most expensive theatrical subs made can make that claim. Here's what builder 'Tweedpower'has to say about his THT: Built a Tuba HT, my third Tuba. This is a different animal. I built a 30" wide version. This was the widest size that would fit through my door. The low end output is unreal. It is the greatest for the LF channel in my HT. I have been experimenting with different crossover points and I think that I like crossing it over lower at 60 or 80 hz. The power in the sub 50 hz region is impressive. It lets you know what the sound engineers had in mind. I get great output down to 15 hz and basically flat to 18 hz when using minimal EQ. The sensitivity advantage of the Tuba HT means bass more solid than you've ever heard before. The folded horn geometry reduces distortion to levels that no direct radiator sub can even approach. Here's what builder MaxMercy measured from his THT: 20Hz: 114dB at 4.5% THD. I did not push any further, as the panes in my windows were moving about 1/16" at the time. I think they would have broken if I went further. Above 20Hz, you can get damned near as much as you want dB-wise, all clean. Basically, from 16 or so Hz on up, you have strong bass, from 20Hz on up, INSANE bass. I designed the system to give me great sound at -10dB from reference (with Dynamic EQ frequency correction to account for equal loudness curves), which it does with flying colors flat down to around 16Hz before dropping off. Useful output down to 12Hz. All at less than 5% THD. In a sweep and distortion test of a $9950 sub, the Genelec HTS6... the Genelec runs over 10% THD at 115dB. This is significant, in that a sub almost 20 times less expensive to build can seriously compare with one of the best subs available.

If you build either of those, you won't need to sell them. Your reply made me laugh, not because it was funny but because I am taking it to be a masterful understatement... []