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And after many, many moons, I present The Ecuadors: A build log

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  • And after many, many moons, I present The Ecuadors: A build log

    Years ago I lived in Ecuador, in Quito. Even though I've been fortunate enough to have traveled outside the country a fair amount in my past, Ecuador still stands as the only place I wasn't hauling bags between hotels or hostels. It was really an interesting time to be there, and for myself it set off a lot of personal growth. I don't think there is any way to underestimate the momentous changes that happen to someone when you go from traveling in different countries, to actually picking a different country and staying there to live.


    Old Town, built by the Spanish


    Going towards the center of the city, lots of 60's and 70's buildings


    I lived in Quito for half a year just about, and at the time I was still following the car audio field and previously I had been selling Polk Audio (among others) back home. Sometimes I would get a chance to listen to their home audio gear and I knew after listening that I wanted to venture out into audio for my home listening someday. In general I love good design (and specifically, getting things down to what I call their "basement honesty", meaning distilling something down to get to the very root cause of a problem regardless of the politics/judgements, and building it back up from there based on what people actually do... but that's a tangent for another forum) and even while living abroad I found drafting supplies in order to keep my tinkering mind stirring away with designs. One of these designs that kept evolving on my desk throughout late nights where a set of speaker towers using car audio components I knew I could get a hold of once back home. Back then I wanted what I want now from a pair of music speakers... something clean visually and auditorily, something room filling, and something that (pardon the cheesiness) inspired emotion. After drafts started piling up I realized I really desired to see this come to fruition from beginning to end, and despite everything else going on I saved some of these papers and later brought some of them back home with me to make decisions on.


    Some of the originals and their variations using Infiniti Kappa Perfect components. I brought these out tonight from their packing spot


    It's been years now since I first set out to build a set of speakers for music, but despite the time lost the desire has always been there in the back of my mind each year, and this is the year it is going to be finished! A lot has changed for me, I'm practically a new person from the one that lived in Ecuador all those years ago, but the drive remains the same. And this year I made a pledge to myself that I'm calmer, I'm wiser, and I'm going to finally make this happen. No more of the:

    "I have gotta build those speakers before another year passes.."
    "I've got some money coming up, I'm going to build those speakers once and for all"
    "What would it take to finish my speakers..."

    I've spent the last few months researching how I want to bring this long day dream to reality, and thanks to many of you on this forum I'm going to get a chance to see it happen probably better than I ever would have before. This last week most of the remaining big components I need in order to finish my design have arrived!



    Over the next few weeks I'll be updating this periodically as I get this project underway. As it stands I'm only missing the two or three router bits, the two sheets of Baltic Birch, clamps, and some more damping material. With some luck and some time I hope to have the remaining bits solved shortly.





    ¡Que viva Ecuador!

  • #2
    Re: And after many, many moons, I present The Ecuadors: A build log

    Nice drivers, and nice pictures. Living in southern michigan, its kinda rare to encounter even a slight grade, let alone a hill or mountain.

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    • #3
      Re: And after many, many moons, I present The Ecuadors: A build log

      Originally posted by chrisn View Post
      Nice drivers, and nice pictures. Living in southern michigan, its kinda rare to encounter even a slight grade, let alone a hill or mountain.
      Being from Grand Haven, I feel ya on that.

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      • #4
        Re: And after many, many moons, I present The Ecuadors: A build log

        Originally posted by chrisn View Post
        Nice drivers, and nice pictures. Living in southern michigan, its kinda rare to encounter even a slight grade, let alone a hill or mountain.
        Heh, I moved from Canton to south Florida. My wife and I were commenting the other day while driving how much hillier it is in metro Detroit than here. It's all a matter of perspective.

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        • #5
          Re: And after many, many moons, I present The Ecuadors: A build log

          To get even slightly better drivers, you'd have to spend twice as much, so well done on your driver choices. The enclosure design looks nice so far, too. Will the 12"s be crossed over actively?

          Dan
          _____________________________
          Tall Boys
          NRNP Computer Sub
          The Boxers
          The Hurricanes
          The Baronettes
          Conneccentric
          UX3

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          • #6
            Re: And after many, many moons, I present The Ecuadors: A build log

            Yeah I'm looking forward to hearing these drivers, I've read a lot of threads about them.

            The 12" each have their own outboard SPA500 plate amp that're setup next to the Yamaha, but they'll be actively crossed over at 80hz using the two subwoofer outputs of the AVR.

            On the MTM side I spent some time today getting the crossovers laid out, should have them soldered and ready to go by the weekend among other tasks.

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            • #7
              Re: And after many, many moons, I present The Ecuadors: A build log

              Given the woofer placement, and active xover/auto eq AVR setup, you can even play with much higher crossovers in the 120-160hz range. All it takes is a few seconds in the setup menu.
              http://jaysspeakerpage.weebly.com/

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              • #8
                Re: And after many, many moons, I present The Ecuadors: A build log

                Originally posted by Jay1 View Post
                Given the woofer placement, and active xover/auto eq AVR setup, you can even play with much higher crossovers in the 120-160hz range. All it takes is a few seconds in the setup menu.
                +1!

                I run my RSS315HFs to 350Hz in my Byzantium 3-ways. They handle it beautifully, leaving the mids free to effortlessly reproduce their range without strain.
                R = h/(2*pi*m*c) and don't you forget it! || Periodic Table as redrawn by Marshall Freerks and Ignatius Schumacher || King Crimson Radio
                Byzantium Project & Build Thread || MiniByzy Build Thread || 3 x Peerless 850439 HDS 3-way || 8" 2-way - RS28A/B&C8BG51

                95% of Climate Models Agree: The Observations Must be Wrong
                "Gravitational systems are the ashes of prior electrical systems.". - Hannes Alfven, Nobel Laureate, Plasma physicist.

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                • #9
                  Re: And after many, many moons, I present The Ecuadors: A build log

                  I'll play around with the avr crossover once all is said and done, see what sounds best. I would guess that 120hz-160hz would be fine, but I worry a bit about getting too high a crossover and introducing directionality with the mono signal.

                  What's a bit tricky for me is that everyone I've read who's built an RS180/RS28a mtm and all its crossover project variations have gone ported to get the low end reach. Like you guys are pointing out these won't need to reach, they've got the RSS315HFs built in. Because of that fact a few prominent builders earlier on told me to make the mtm sealed instead of ported, which I'm doing. I have plans to build a 20L and a 16L test enclosures to see what I like the sound of better. Either way, in a sealed configuration the lowest they model realistically anyway is ideally about 80hz (before they reach xmax), so I think getting the 12" to do more of the heavy lifting is welcome.

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                  • #10
                    Re: And after many, many moons, I present The Ecuadors: A build log

                    Originally posted by linguistisch View Post
                    I'll play around with the avr crossover once all is said and done, see what sounds best. I would guess that 120hz-160hz would be fine, but I worry a bit about getting too high a crossover and introducing directionality with the mono signal.

                    What's a bit tricky for me is that everyone I've read who's built an RS180/RS28a mtm and all its crossover project variations have gone ported to get the low end reach. Like you guys are pointing out these won't need to reach, they've got the RSS315HFs built in. Because of that fact a few prominent builders earlier on told me to make the mtm sealed instead of ported, which I'm doing. I have plans to build a 20L and a 16L test enclosures to see what I like the sound of better. Either way, in a sealed configuration the lowest they model realistically anyway is ideally about 80hz (before they reach xmax), so I think getting the 12" to do more of the heavy lifting is welcome.
                    You shouldn't have any real issue with directionality since you are running two subs instead of one. I understand your concern is more with the mono-signal, but I doubt it will make much difference down as low as 120hz. BTW, glad to see you finally got around to building these.
                    -Kerry

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                    • #11
                      Re: And after many, many moons, I present The Ecuadors: A build log

                      nice choices. my current build will have 315hf sidefiring as well.
                      " To me, the soundstage presentation is more about phase and distortion and less about size. However, when you talk about bass extension, there's no replacement for displacement". Tyger23. 4.2015

                      Quote Originally Posted by hongrn. Oct 2014
                      Do you realize that being an American is like winning the biggest jackpot ever??

                      http://www.midwestaudioclub.com/spot...owell-simpson/
                      http://s413.photobucket.com/albums/pp216/arlis/

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                      • #12
                        Re: And after many, many moons, I present The Ecuadors: A build log

                        Originally posted by [email protected] View Post
                        nice choices. my current build will have 315hf sidefiring as well.
                        Thanks. Look forward to seeing that build.

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                        • #13
                          Re: And after many, many moons, I present The Ecuadors: A build log

                          Gorgeous pictures.. wow, that's gotta be an inspiring place to live.

                          Your build sketches look a lot like the Polk RT towers I was looking at a decade ago or so. DIY is definitely more fun.

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                          • #14
                            Re: And after many, many moons, I present The Ecuadors: A build log

                            Finished the crossovers today. I was a little worried being that I've never made one before but there weren't very many components in this and it seemed to work out okay. Originally I was thinking about getting some thin board from a hardware store and mounting the crossovers that way using my own hole placement but I ended up using blank 6" x 8" pcb which will neatly fit below each speaker with some 1/4" nylon standoffs.

                            I made most of one board first to get the feel for it as opposed to doing both at the same time. Then I moved on to the second one and cinched everything down on both once I was satisfied. I had some 14-2 in my supplies from a basement lighting job I did earlier this year, so I used that for the runners.



                            Here's a shot of a completed one. It might have been better to do direct wiring without the cheap interconnects or excessive solder but I have a hard time knowing what will really make an end difference in sound versus what keeps my anxiety low. For example knowing I used terminal blocks in case I decide to try out a different crossover design down the road versus keeping the signal path as high quality as possible.



                            Last step was to glue the components so they don't rattle or vibrate loose. I thought about hot gluing at first but my hot glue gun is on loan and epoxy has a stronger hold. I made the mistake of thinking a big room and a few short working minutes would make up for laying down the epoxy without any real ventilation, so I got sloppy laying it down as I was starting to feel affected by it and just wanted to get out of dodge.



                            Ah well, they don't have to be pretty they just have to work. ;)

                            Originally posted by Navy Guy View Post
                            You shouldn't have any real issue with directionality since you are running two subs instead of one. I understand your concern is more with the mono-signal, but I doubt it will make much difference down as low as 120hz. BTW, glad to see you finally got around to building these.
                            Thanks Kerry! I'm learning to loosen my grip on what "has to be", I'm sure it'll be fine. I'll play around with it and find some configuration that works.

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                            • #15
                              Re: And after many, many moons, I present The Ecuadors: A build log

                              Lots of slow progress on the parts collection before the sawdust cometh, but today marked one of the biggest days for this project yet. Among getting some supplies at a nearby Home Depot (like a new Rigid shop vac) I was able to purchase 2 more full sheets of void free 3/4" Baltic Birch from a local Woodcrafters. They aren't cheap at $69.50 a sheet and neither was the shop fee to have them make six cuts down to pieces that I could fit into my car, but in the end I'm excited to have them ready to go for my table saw.

                              I found dealing with 60"x60" more difficult than with the usual 48"x96", maybe because I'm just not used to it, but I kept coming up short when trying to draw out panels. Eventually I managed to squeeze them all in and ended up with an extra square in case I mess something up.

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