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2x250 IRS2092 amp build

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  • 2x250 IRS2092 amp build

    Finally got this done and playing. Very simple build. If I can do it, so can you. I used this amp modual from Parts Express. http://www.parts-express.com/2x250w-...board--320-313
    with a 45va Toridial form Antek.http://www.antekinc.com/an-10445-100...v-transformer/
    It was thought I might be a little HOT but all said and done it puts out 64.6 volts under a load. Whew!
    The PSU uses 8 per side caps from Apexjr. 2 bux per! 4700x 8 for 37000 per rail. I read a bunch but pretty much copied Hong's. I used a softstart module I got from ebay and a unit that turned 12vac to 12dc I bought from AJ. works like a charm to power a 12vdc fan and 12vdc truck light to show its on. Case is form Parmetal and was about $100. this is destined for my theater so I wanted it to blend. Feel free to ask questions.


    " 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/

  • #2
    Re: 2x250 IRS2092 amp build


    " 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/

    Comment


    • #3
      Re: 2x250 IRS2092 amp build

      BTW, nobody made a board big enough so I make my own from plexi.
      " 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/

      Comment


      • #4
        Re: 2x250 IRS2092 amp build

        Cool Arlis. I like what you did. Total cost + $350?
        Don't worry, if your parachute fails, you have the rest of your life to fix it.

        If we all did the things we are capable of doing, we would literally ASTOUND ourselves - Thomas A. Edison

        Some people collect stamps, Imelda Marcos collected shoes. I collect speakers.:D

        Comment


        • #5
          Re: 2x250 IRS2092 amp build

          Probably closer to $325. The case added a lot and this can be done with a lower va torodial but the 800 was out of stock so I went with the 1000. 600 would do fine. This build was to be overkill from the start. With a home made wooden box and smaller Toroid, it could be built much cheaper.
          Last edited by arlis_1957@yahoo.com; 05-17-2014, 08:25 AM.
          " 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/

          Comment


          • #6
            Re: 2x250 IRS2092 amp build

            Very nice. I really need to edu-mah-cate myself on this stuff a bit more.
            Initial Success or Total Failure

            Comment


            • #7
              Re: 2x250 IRS2092 amp build

              Originally posted by arlis_1957@yahoo.com View Post
              The PSU uses 8 per side caps from Apexjr. 2 bux per! 4700x 8 for 37000 per rail. [/IMG][/URL]
              You have them in series/parallel arrangement. That is 9400uF/'side'. Only parallel adds (doubles) capacitance. In series they will halve, but carry twice the voltage capacity.
              Later,
              Wolf
              "Wolf, you shall now be known as "King of the Zip ties." -Pete00t
              "Wolf and speakers equivalent to Picasso and 'Blue'" -dantheman
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              Comment


              • #8
                Re: 2x250 IRS2092 amp build

                Awesome Lowell! I was going to ask you about the amp's progress, but I'm glad it's done. Did you paint the case, or did you buy it anodized black?

                Hong
                Some people are addicted to Vicodin. I'm addicted to speaker building.

                The Chorales - Usher 8945A/Vifa XT25TG Build
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                Comment


                • #9
                  Re: 2x250 IRS2092 amp build

                  Anodized front, The rest is painted from the factory. Made all the holes with a step drill bit.
                  " 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/

                  Comment


                  • #10
                    Re: 2x250 IRS2092 amp build

                    Originally posted by Wolf View Post
                    You have them in series/parallel arrangement. That is 9400uF/'side'. Only parallel adds (doubles) capacitance. In series they will halve, but carry twice the voltage capacity.
                    Later,
                    Wolf
                    Are you sure about that. If so, then every PSU I have seen is wrong.
                    Its the same as Hong's http://techtalk.parts-express.com/sh...highlight=hong
                    Attached Files
                    Last edited by arlis_1957@yahoo.com; 05-17-2014, 07:48 AM.
                    " 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/

                    Comment


                    • #11
                      Re: 2x250 IRS2092 amp build

                      That's nice looking Lowell.

                      Stuff like this gets my juices flowing...There are so many fun aspects to the speaker/sound hobby, and I'd like to dabble in all of it!
                      I have a question, is the piece of plate metal between the Transformer and the amp in the second pic above there for some type of shielding, or as a heat shield from the amp?

                      TomZ
                      *Veneering curves, seams, using heat-lock iron on method *Trimming veneer & tips *Curved Sides glue-up video
                      *Part 2 *Gluing multiple curved laminations of HDF *Cello's Speaker Project Page

                      *Building the "Micro-B 2.1 Plate Amplifier -- Part 1 * Part 2 * Part 3 * Part 4 * * Part 5 'Review' * -- Assembly Instructions PDF

                      Comment


                      • #12
                        Re: 2x250 IRS2092 amp build

                        Originally posted by arlis_1957@yahoo.com View Post
                        Are you sure about that. If so, then every PSU I have seen is wrong.
                        Wolf is right with his capacitor math.
                        Keep an open mind, but don't let your brain fall out.

                        Sehlin Sound Solutions

                        Comment


                        • #13
                          Re: 2x250 IRS2092 amp build

                          Originally posted by tomzarbo View Post
                          That's nice looking Lowell.

                          Stuff like this gets my juices flowing...There are so many fun aspects to the speaker/sound hobby, and I'd like to dabble in all of it!
                          I have a question, is the piece of plate metal between the Transformer and the amp in the second pic above there for some type of shielding, or as a heat shield from the amp?

                          TomZ
                          Thanks Tom.
                          Yes, copper shielding between the Transformer and amp. It generates no sound at the speakers without input.
                          " 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/

                          Comment


                          • #14
                            Re: 2x250 IRS2092 amp build

                            Very nice! IIRC, Neil Davis said the 2092 designs were cleaner than most of the other
                            Class D chipamps. Plenty of power for demanding sources like AC/DC and Wagner.

                            I think I hear a difference - wow, it's amazing!" Ethan Winer: audio myths
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                            • #15
                              Re: 2x250 IRS2092 amp build

                              Originally posted by scottsehlin View Post
                              Wolf is right with his capacitor math.
                              Here is another example. These are polarized caps. I used two of them with the + of one and - of the other joined to form the 'ground' for the amp.
                              Attached Files
                              " 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/

                              Comment

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