Announcement

Collapse
No announcement yet.

New project: RSX

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • #16
    Click image for larger version  Name:	93651E2A-999B-4456-A849-E4CB76F981EB.jpeg Views:	1 Size:	163.5 KB ID:	1411350Click image for larger version  Name:	87D68028-5177-4D88-8C8D-34F36006DBEF.jpeg Views:	1 Size:	75.6 KB ID:	1411349Click image for larger version  Name:	5E387C48-B945-4490-B502-2321FA800F97.jpeg Views:	1 Size:	93.8 KB ID:	1411348Click image for larger version  Name:	8C52872B-ABD3-4633-955A-5D02BEBDEE2C.jpeg Views:	1 Size:	96.2 KB ID:	1411347Click image for larger version  Name:	1F08463F-146C-4010-8716-B90D6255BD8F.jpeg Views:	1 Size:	85.2 KB ID:	1411346
    Here is the voicing in the test enclosures. I know it is backwards to voice first but I waned to make sure I liked them enough to move ahead with the design. I ended up ditching the top panel.

    Comment


    • #17
      Click image for larger version

Name:	69C3BB17-5F46-447B-A6A2-82DDF2355D66.jpeg
Views:	60
Size:	74.9 KB
ID:	1411353Click image for larger version

Name:	83037C73-7C4A-4558-BFBD-FD407E56A0DD.jpeg
Views:	53
Size:	80.1 KB
ID:	1411354Click image for larger version

Name:	13B101D7-569C-44DC-B01F-2E78FA29518B.jpeg
Views:	47
Size:	101.5 KB
ID:	1411355Click image for larger version

Name:	4F408A3E-E161-4300-8C74-3849376DB122.jpeg
Views:	75
Size:	76.8 KB
ID:	1411356Click image for larger version

Name:	7886B1ED-D5F0-4D66-8792-B372AB2F3E70.jpeg
Views:	55
Size:	72.8 KB
ID:	1411357

      Here is the start to the enclosures. The woofer enclosure is trapezoidal, which is a PITA compared to the rectangular boxes I’m used to.

      I used maple veneered hardwood ply since I didn’t want to deal with mdf dust. Not as nice to work with as Mdf or Baltic though.

      the baffle is 1.5” thick. The edges are held together with construction adhesive and the middle is filled with green glue. This turned out pretty dead.

      Comment


      • #18
        Click image for larger version  Name:	5A034CEE-B92F-4DA6-A961-28E4E3DAA3B8.jpeg Views:	1 Size:	64.2 KB ID:	1411361Click image for larger version  Name:	1CB136DA-CF49-4E29-869C-88B34E900E0F.jpeg Views:	1 Size:	85.2 KB ID:	1411362


        Box is 2.25ft3 with a 10” dsa passive on each side of the box. This is at 75w and a touch over Xmax for the woofer.

        Comment


        • #19
          Click image for larger version

Name:	15deg 12th 8 ft.png
Views:	49
Size:	13.7 KB
ID:	1411364Click image for larger version

Name:	distortion 90db at 6 ft 15 deg.png
Views:	53
Size:	151.2 KB
ID:	1411365Click image for larger version

Name:	axis plot.png
Views:	49
Size:	20.1 KB
ID:	1411366Click image for larger version

Name:	Schematic.JPG
Views:	48
Size:	258.0 KB
ID:	1411367

          The measurements are in-room. The first is 15deg and is the best behaved (free of major dips from the waveguide). This is the intended listening axis so at least that works out. The distortion is 90db at six feet on a crappy receiver; nothing amazing but not too bad IMO.

          Comment


          • #20
            Click image for larger version

Name:	on axis normal.gif
Views:	47
Size:	73.0 KB
ID:	1411370Click image for larger version

Name:	on axis rev woofer.gif
Views:	47
Size:	78.0 KB
ID:	1411371Click image for larger version

Name:	on axis rev tw.gif
Views:	41
Size:	72.5 KB
ID:	1411372Click image for larger version

Name:	impedace.gif
Views:	55
Size:	16.4 KB
ID:	1411373

            Here is the on-axis sim. Ignore the tweeter rise, the crossover did not include correction for this in the sim but does in practice.

            Comment


            • #21
              Nice you went OB with the coax! As soon as I saw that you were doing the ten coax and ten woofer, the OB choice you made was what I thought would be a cool project to try. Big thumbs up to this build!! Also, you rocked that coax assembly, 👍
              A mains
              The Ventures
              Open Invit8tions
              RSR
              Sound Troopers
              Acorns
              442
              DGBG's
              The Monuments

              Comment


              • #22
                Thanks! Definitely my most ambitious attempt at a build so far, lol. I hope to actually get to MWAF this year and plan to bring them if I do.

                Comment


                • #23
                  Click image for larger version  Name:	B7CE20BA-9329-40E2-8D4B-898EAD546337.jpeg Views:	1 Size:	79.0 KB ID:	1412684Click image for larger version  Name:	6EBB983F-415B-4BEA-A220-BC6C1B27BB61.jpeg Views:	1 Size:	51.9 KB ID:	1412683Click image for larger version  Name:	E8842BC5-2B98-48D3-931B-A7AC6406A440.jpeg Views:	1 Size:	45.5 KB ID:	1412682
                  Made some more progress. I got the facets cut. I went with non symmetrical facets on the baffles, using a 45 on one side and tapered 45 on the other.

                  I also veneered one of the baffles. This was my first time veneering. Plenty of lessons learned and things I could do better, but it turned out ok. Hopefully I don’t mess up the other one ore any of the dozens of any other things that can go wrong between here and the finished product.

                  im thinking a coffee brown transtint dye and multiple coats of schellac. I know shellac isn’t durable but I guess in this case it doesn’t need to be,
                  and I read shellac shows wood figure well. It also dries fast. Any advice or suggestions are welcome.

                  The cocktail napkin type sketch is roughly what I’m going for.
                  Last edited by dynamo; 05-10-2019, 09:07 AM. Reason: Grammar

                  Comment


                  • #24
                    I cut out the other tweeter today while I had the bandsaw out. Here are some pics of cutting it out. I’ll post some of epoxying the hardware on when I get around to that part.

                    The dome is slightly proud of the tweeter, so it does push in and rub on the table when cutting. But it pops right out with no damage.

                    Comment


                    • #25
                      Here are some pics of the veneering process. The PSA was really nice and easy to work with

                      Comment


                      • #26
                        A few more veneer pics..

                        Comment


                        • #27
                          Routed out the holes for the DSA270 passives, which look very nice by the way. There is no bracing in the boxes yet but there will be. I wanted to wait until I had all the holes punched.

                          Comment


                          • #28
                            I routed the holes in the baffle for the RS270Ps. I opened up the backsides with a 45deg bit since the baffle is so thick.

                            Comment


                            • #29
                              I cut the trim out of solid aspen. I plan to just clear the aspen as it is such a clean clear white wood.

                              Comment


                              • #30
                                I dyed the boxes and baffles in coffee brown transtint dye diluted in denatured alcohol. This is the dye only with no clear yet.

                                Comment

                                Working...
                                X