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  • Amp question's for those in the know

    Could someone please give me some feedback on choosing between these 2 amps, I plan on running 4 polk DB651 speakers and a sub, I know the mbquart is a class D amp, and the boss is a class A/B but it is marine rated , but would like for someone more knowlegable to look at the specs, I'm not sure I know enough to choose the one that is the best bang for the buck
    http://www.ebay.com/itm/NEW-BOSS-AUD...item519a8f36f4

    http://www.ebay.com/itm/MB-QUART-ONX...item43abc5229e

  • #2
    Originally posted by 81SNS View Post
    Could someone please give me some feedback on choosing between these 2 amps, I plan on running 4 polk DB651 speakers and a sub, I know the mbquart is a class D amp, and the boss is a class A/B but it is marine rated , but would like for someone more knowlegable to look at the specs, I'm not sure I know enough to choose the one that is the best bang for the buck
    http://www.ebay.com/itm/NEW-BOSS-AUD...item519a8f36f4

    http://www.ebay.com/itm/MB-QUART-ONX...item43abc5229e
    I got nothing....

    However, one of the smart guys from TX has a recommendation that is first-hand testimony.

    http://www.mastercraft.com/teamtalk/...07&postcount=2

    With the 4 channel Boss, you'll have to bridge channels to run all 5 speakers from one amp. Personally, I'd not entertain the car amp in one of your links. Dougie has the right idea....


    .
    93 190
    .
    Don't be a boot licker
    .

    Hose picture (internal) http://www.mastercraft.com/teamtalk/...68&postcount=8

    sigpic

    ..Some of you give a whole new meaning to the phrase "another @sshole with a Mastercraft."

    RE: Thrall, Welcome to the club....
    NEW SKINS in TN... Leading Edge Marine Interior

    feedback on a TN company: http://www.mastercraft.com/teamtalk/...ad.php?t=58767

    .

    Comment


    • #3
      How big of a sub are you going to run?

      This is the amp I have running almost an identical setup as you are talking about and it has worked out well. It's reasonably price, is ample to power those polk db speakers and an 8--10" sub. If anything, the sub channel is a bit short on power on paper. But that said, I am powering a polk MM series sub and don't have the gain turned up past 1/3 of the way.

      Infinity Reference 5 Channel Amp


      Previous: 1993 Prostar 205

      Red 1998 Closed Bow Ski Boat, Ford 351, 310 hp, Acme 4 blade, Perfect Pass SG.

      FAQ


      Tyler Ski Club


      To me, this forum is about love of inboard boats. It is about the sharing of information and, on a good day, some humor. It is not about post count, brand of boat, or any other superfluous labels that lend themselves to a false sense of superiority. Please, respect one another, try to pass on accurate information, and keep your eye on the ball.

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      • #4
        I think a lot of this would depend on the size sub you plan on running too. IMHO I'd run a separate amp for the sub and use a Cadence amp. I told them I was using this in my boat and the salesman told me they would warranty the amp even if I submerged it in water. I bought my amp directly from Cadence. off hand I can't remember which model it was but was used to power my Wet Sounds Pro 80's

        http://www.cadencesound.com/categories/Amplifiers/
        1998 Stingray 180LX
        2000 Infinity ZX-1 good riddens
        2003 Prostar TT 197 sold

        2007 Prostar TT 197.....special delivery from the dealer 3/18/08 sold 6/7/11

        Comment


        • #5
          Just an FYI, the MB Quart ONX4.125 is a Class AB amplifier despite what the seller claims.
          Not a Class D.
          The specs don't always mean a great deal as there is no regulating body to enforce compliance to any industry standard. You just have to do business with a manufacturer that is trustworthy.
          I also agree that the subwoofer selection should determine the amplifier.

          David
          Earmark Marine
          Earmark Marine
          www.earmarkmarine.com

          Comment


          • #6
            And the enclosure type as well. Don't need as much power for a ported/BR enclosure as you do for a sealed enclosure.

            /see, David. I've been paying attention.
            Last edited by east tx skier; 12-22-2011, 03:18 PM.
            Previous: 1993 Prostar 205

            Red 1998 Closed Bow Ski Boat, Ford 351, 310 hp, Acme 4 blade, Perfect Pass SG.

            FAQ


            Tyler Ski Club


            To me, this forum is about love of inboard boats. It is about the sharing of information and, on a good day, some humor. It is not about post count, brand of boat, or any other superfluous labels that lend themselves to a false sense of superiority. Please, respect one another, try to pass on accurate information, and keep your eye on the ball.

            Comment


            • #7
              I am open to suggestions on the sub as well, I would like to use a 8" or 10", with a enclosed box

              Comment


              • #8
                You def don't need a marine amp unless your boat is stored outside in the elements and doesn't get a chance to breath in high high humidity. People run car audio amps in boats way more than marinized versions. Marine audio has finally started to somewhat catch up on performance. As mentioned that MB Quart is also a class A/B amp.

                If u want something to last I would stay away from the Boss amps...while they will work and people run them their power specs are notoriously over rated and areknown to be inefficient. Their marine amps are not the best quality either. Your speakers are only as good as the amp powering them. You have a decent speaker so I would go with a decent amp. Again you don't have to get a marine amp.

                Those speakers really want 100watts ems going to them. You can get away 75watts. Having a smaller boat and minimal space I would again suggest a strong 4channel amp. There are tons of middle of road amps out there. I have always liked the kicker zx series amps for best bang for buck sound quality ratio. Their customer service is great I have been running their amps in my trucks for years. I have only had one go bad and they refurbed it for 50 bucks.

                Like others suggest narrow down your sub choice. You can easily run 4 inboats and a sub off one 4 channel amp. You don't need a second amp at all.....that is unless u want to run a huge sub. Have a price range in mind for a sub? Stereo stuff is def one of those you get what you pay for things. However there is some decent stuff at each pricepoint. You will also find its the Chevy vs Ford debates on a lot of the brands in the middle of the road category.
                Last edited by swatguy; 12-22-2011, 10:49 AM.
                CURRENT: 2008 SANTE 210

                2000 Mastercraft Xstar
                2004,2005 Ski Centurion Avalanche C4
                2003, Ski Centurion Cyclone
                99,2000,2001, 2002 Ski Centurion Elite V/Hurricane/lightning
                88 2001 Nautique

                Comment


                • #9
                  Originally posted by 81SNS View Post
                  I am open to suggestions on the sub as well, I would like to use a 8" or 10", with a enclosed box
                  I have been very happy with my Polk MM840.

                  As for the speakers, they are definitely rated for 100 rms. But you can get away with less and they will sound great. But if you find a good amp in your price range that can give them the full juice, go for it.

                  I just picked up a 4 channel Polk amp from Polk's factory refurb ebay store that does 90 watts per channel rms for $199.
                  Last edited by east tx skier; 12-22-2011, 11:04 AM.
                  Previous: 1993 Prostar 205

                  Red 1998 Closed Bow Ski Boat, Ford 351, 310 hp, Acme 4 blade, Perfect Pass SG.

                  FAQ


                  Tyler Ski Club


                  To me, this forum is about love of inboard boats. It is about the sharing of information and, on a good day, some humor. It is not about post count, brand of boat, or any other superfluous labels that lend themselves to a false sense of superiority. Please, respect one another, try to pass on accurate information, and keep your eye on the ball.

                  Comment


                  • #10
                    Originally posted by east tx skier View Post
                    I have been very happy with my Polk MM840.
                    That would be good choice. IMO Polk gives you some of the higher end materials in lower end price range. The boat audio world isn't as harsh as the car audio in sound quality purely do to the open air and ambient noise enviorment. If you want a little more the 1040 or the 1040um are decent as well.
                    CURRENT: 2008 SANTE 210

                    2000 Mastercraft Xstar
                    2004,2005 Ski Centurion Avalanche C4
                    2003, Ski Centurion Cyclone
                    99,2000,2001, 2002 Ski Centurion Elite V/Hurricane/lightning
                    88 2001 Nautique

                    Comment


                    • #11
                      Originally posted by east tx skier View Post
                      And the enclosure type as well. Don't need as much power for a sealed enclosure as you do for a ported/BR enclosure.

                      /see, David. I've been paying attention.
                      Sealed enclosures take more power than ported.
                      Last edited by agarabaghi; 12-22-2011, 01:01 PM.

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                      • #12
                        What about a price range for the sub?

                        Comment


                        • #13
                          Yes, bass-reflex/ported is usually more responsive than sealed which is what East Tx meant to write.
                          Earmark Marine
                          www.earmarkmarine.com

                          Comment


                          • #14
                            Originally posted by EarmarkMarine View Post
                            Yes, bass-reflex/ported is usually more responsive than sealed which is what East Tx meant to write.
                            You understand me.

                            /meant to write that the exact opposite of how it came out.
                            Last edited by east tx skier; 12-22-2011, 03:17 PM.
                            Previous: 1993 Prostar 205

                            Red 1998 Closed Bow Ski Boat, Ford 351, 310 hp, Acme 4 blade, Perfect Pass SG.

                            FAQ


                            Tyler Ski Club


                            To me, this forum is about love of inboard boats. It is about the sharing of information and, on a good day, some humor. It is not about post count, brand of boat, or any other superfluous labels that lend themselves to a false sense of superiority. Please, respect one another, try to pass on accurate information, and keep your eye on the ball.

                            Comment


                            • #15
                              Originally posted by swatguy View Post
                              That would be good choice. IMO Polk gives you some of the higher end materials in lower end price range. The boat audio world isn't as harsh as the car audio in sound quality purely do to the open air and ambient noise enviorment. If you want a little more the 1040 or the 1040um are decent as well.
                              I have often thought about trading up for the mm1040. But I get a lot of mileage out of that little 8 in the closed bow.
                              Previous: 1993 Prostar 205

                              Red 1998 Closed Bow Ski Boat, Ford 351, 310 hp, Acme 4 blade, Perfect Pass SG.

                              FAQ


                              Tyler Ski Club


                              To me, this forum is about love of inboard boats. It is about the sharing of information and, on a good day, some humor. It is not about post count, brand of boat, or any other superfluous labels that lend themselves to a false sense of superiority. Please, respect one another, try to pass on accurate information, and keep your eye on the ball.

                              Comment

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