Announcement

Collapse
No announcement yet.

Amp 9 it's a good amp for a DD?

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

  • Amp 9 it's a good amp for a DD?

    I'm building a DD PC and I would like to get some feedback from owners of this amp 9(basic mostly) before I order it.
    it heats up a lot? it needs a big heatsink?(pictures would not hurt) anti thump feature works well?
    there is another alternative out there? it has to fit in a DD case.
    I don't need crazy power, just like a car stereo or a bit better.

  • #2
    this is about the only documented amp 9 dd install i know of...
    http://www.mp3car.com/worklogs/14566...n-project.html
    My OLD 2001 Mitsubishi Eclipse GT:
    "The Project That Never Ended, until it did"


    next project? subaru brz
    carpc undecided

    Comment


    • #3
      thank you. I have folowed that thread, but I don't see a review or any real info about it.
      I don't remember the names but I remember that who makes those DD cases, made a pc to sombody with a motorhome and they couldn't figure out some noise issues and he was selling the amp. I have the same Intel Atom 230 board as him.

      Comment


      • #4
        you'll have to double check the size, but these get decent ratings:

        http://www.parts-express.com/wizards...ge+Flash+Panel
        New System in progress:
        M10k
        Phaze TD1500 ~> Dynaudio MD130
        Phaze TD1500 ~> Seas g18rnx/p
        Zapco Ref 500.1 ~ 12" tc-9
        Behringer DCX2496 ~ Envision Electronics psu
        Transflective Xenarc

        My Car Pc Install
        My Boat Pc worklog

        Comment


        • #5
          Originally posted by scott_fx View Post
          you'll have to double check the size, but these get decent ratings:

          http://www.parts-express.com/wizards...ge+Flash+Panel
          That 4x100 Sure amp looks like it will be perfect for a project I'm throwing together (and maybe start selling as well) - does that look like it would put out good, clean power for a head unit replacement? Would 12V from the car battery be adequate to power it?
          monkey stole my pen

          My Worklog

          Comment


          • #6
            I knew about that amp and asked on the forum about it and did not get an answer that I have expected and decided not to go with it.
            I have ordered today the Amp9.

            Comment


            • #7
              those parts-express amps use variations of the same tripath chipset that the amp9, and the bybyte amp are based on, so sound quality should be just as good.

              but the power supply specs say they will take dc voltage from 10-30v, but it is a little sketchy on weather dc input voltage affects overall output--like normal car audio amps, or weather the output power ratings were done at 30v power input..
              My OLD 2001 Mitsubishi Eclipse GT:
              "The Project That Never Ended, until it did"


              next project? subaru brz
              carpc undecided

              Comment


              • #8
                Originally posted by soundman98 View Post
                those parts-express amps use variations of the same tripath chipset that the amp9, and the bybyte amp are based on, so sound quality should be just as good.

                but the power supply specs say they will take dc voltage from 10-30v, but it is a little sketchy on weather dc input voltage affects overall output--like normal car audio amps, or weather the output power ratings were done at 30v power input..
                The Amp9 at 75 euros is quite a bit more than the bybyte and sure amps and if the performance is the same not worth it imo. All I need is one of these and a eq/pre-amp and a source and I should be good to do. Any tricks on eliminating pops when it's powered on?

                Edit: This pdf for the sure 4x100 amp states that it has pop protection built in, but that it shouldn't be used in conjunction with a preamp or with an unstable power supply - I'm guessing directly hooking up to the 11-14 volts of a car battery would be considered unstable?
                Last edited by elBradford; 03-06-2011, 05:02 AM.
                monkey stole my pen

                My Worklog

                Comment


                • #9
                  yes. so you would need a dc-dc power supply capable of delivering 12A max current to correctly supply the amp (it starting to get more expensive )
                  My OLD 2001 Mitsubishi Eclipse GT:
                  "The Project That Never Ended, until it did"


                  next project? subaru brz
                  carpc undecided

                  Comment


                  • #10
                    Originally posted by soundman98 View Post
                    yes. so you would need a dc-dc power supply capable of delivering 12A max current to correctly supply the amp (it starting to get more expensive )
                    Except the Sure 4x100 will accept 6v-30v... In the thread about the Amp9 it appears that guy wired it up directly to the BAT line. It seems like hooking up this Sure amp to a relay controlled by ACC to the BAT line with an inline fuse should work but I'd really like to know if it wouldn't and why. Thanks soundman.
                    monkey stole my pen

                    My Worklog

                    Comment


                    • #11
                      it 'should' do with the way the amps are designed.

                      i am by no means a expert on any of this(just a guy with a internet connection )

                      from the statements made by both amps--from either their spec sheet, or the online store, i am lead to believe that the Sure series of amps are designed for small projects where the amps would stay permanently installed, in a non-mobile environment.

                      comparing both the 4x100, and the amp9, there are visible power filtering devices on the amp 9, that are not present on the Sure 4x100:
                      the amp9 has some large storage capacitors--these both provide a level of incoming power filtering, and some reserve power for the amp chipset(only a little as capacitors can discharge their entire storage capacity very fast, but if the draw is small, it can take a while to discharge..).
                      the amp9 also has some visible coils-- these are mostly low-freq power filters but power filtering none-the-less..

                      the Sure 4x100 has some visible coils near the input stages, but no visible storage capacitors like other amp designs..

                      after briefly looking at other amps in the Sure series, there are some very small supply capacitors on many of the designs, but nothing like any other amp design i have seen-- most amp designs will have larger capacitors similar to the amp9-- because it allows for more power-- both for filtering, and for storage..

                      so after my non-expert look at both designs, i would have to say that all the sure-series amps will require voltage, and power regulation in a car environment, because none of them appear to have sufficient filtering built in..

                      this is probably the biggest reason that they are so much cheaper then the amp 9, or other similar tripath-based amps that cost more..
                      My OLD 2001 Mitsubishi Eclipse GT:
                      "The Project That Never Ended, until it did"


                      next project? subaru brz
                      carpc undecided

                      Comment


                      • #12
                        Originally posted by soundman98 View Post
                        it 'should' do with the way the amps are designed.

                        i am by no means a expert on any of this(just a guy with a internet connection )

                        from the statements made by both amps--from either their spec sheet, or the online store, i am lead to believe that the Sure series of amps are designed for small projects where the amps would stay permanently installed, in a non-mobile environment.

                        comparing both the 4x100, and the amp9, there are visible power filtering devices on the amp 9, that are not present on the Sure 4x100:
                        the amp9 has some large storage capacitors--these both provide a level of incoming power filtering, and some reserve power for the amp chipset(only a little as capacitors can discharge their entire storage capacity very fast, but if the draw is small, it can take a while to discharge..).
                        the amp9 also has some visible coils-- these are mostly low-freq power filters but power filtering none-the-less..

                        the Sure 4x100 has some visible coils near the input stages, but no visible storage capacitors like other amp designs..

                        after briefly looking at other amps in the Sure series, there are some very small supply capacitors on many of the designs, but nothing like any other amp design i have seen-- most amp designs will have larger capacitors similar to the amp9-- because it allows for more power-- both for filtering, and for storage..

                        so after my non-expert look at both designs, i would have to say that all the sure-series amps will require voltage, and power regulation in a car environment, because none of them appear to have sufficient filtering built in..

                        this is probably the biggest reason that they are so much cheaper then the amp 9, or other similar tripath-based amps that cost more..
                        Thanks for your input, makes sense.
                        monkey stole my pen

                        My Worklog

                        Comment


                        • #13
                          I still think I'm going to pick up one of the Sure amps and try it out. These seem to run OK on 12V according to this forum: http://www.diyaudio.com/forums/class...tp2050-15.html

                          Worst case, I can't use it in the car. Best case, it rocks and power filtering isn't an issue at all.
                          monkey stole my pen

                          My Worklog

                          Comment


                          • #14
                            very glad to hear you're going to try it out. that is what this community thrives on. Im pretty sure you wont be wasting money,

                            are you going to control the volume from your pc or from one of these boards:
                            http://www.parts-express.com/pe/show...number=320-318
                            New System in progress:
                            M10k
                            Phaze TD1500 ~> Dynaudio MD130
                            Phaze TD1500 ~> Seas g18rnx/p
                            Zapco Ref 500.1 ~ 12" tc-9
                            Behringer DCX2496 ~ Envision Electronics psu
                            Transflective Xenarc

                            My Car Pc Install
                            My Boat Pc worklog

                            Comment


                            • #15
                              I hadn't seen that, I was planning on using this clarion preamp/eq which has good reviews: http://www.amazon.com/Clarion-EQS746.../ref=de_a_smtd The Sure amp says not to use a preamp, however in one if their review videos (for the Sure) they simply hook an ipod up to it. The voltage output for this preamp/eq isn't much more than the voltage output of an ipod so I think it will work.
                              monkey stole my pen

                              My Worklog

                              Comment

                              Working...
                              X