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Just got a marshall dsl tube amp. it has buzzy nasty distortion(unwanted).Please help

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  • Just got a marshall dsl tube amp. it has buzzy nasty distortion(unwanted).Please help

    Hi folks.


    Today I received by UPS a Marshall DSL201 20 Watt all tube amp.

    4 12ax7 preamp tubes and 2 EL84

    The amp sounds well when played at the clean channel with the clean channel gain control under 4-5 and master volume at moderate to quite loud levels. When gain is turned up or when I switch to the dirty channel I get this nasty distortion. Not the kind of distortion one wants but rather a buzzy and fuzzy distortion like the speaker has a problem or something. But no it is not the speaker.

    I did this test. I hooked up the PODxt to the Effects return input and used the POD as a pre-amp. Everything sounded pretty fine.

    So the problem must be somewhere in the pre-amp section right??

    I swapped the pre-amp tubes positions with one another and nothing changed.

    I emailed the guy who sold the amp to me and he claims that the amp was working fine before he sent it.

    I also noticed that the REVERB has an effect on this problem. When turned up its nastier. But it doesnt change anything drastically though.


    This buzzy distortion makes the amp unusable.

    Any ideas or suggestions?

  • #2
    Did you play one BEFORE you bought it?
    Sell it and buy something else.

    Kw
    <div class="signaturecontainer"><a href="http://www.fortinamps.com" target="_blank">www.fortinamps.com</a></div>

    Comment


    • #3
      Replace the tubes

      Have the bias checked when replacing the power tubes.

      Turn it up.

      Comment


      • #4
        Originally posted by SQUAREHEAD
        Did you play one BEFORE you bought it?
        Sell it and buy something else.

        Kw


        Yes I played one but not the particular one. It doesnt sound like this normally if that is what you are implying.

        I bought it off ebay btw.


        Kannibul,

        I turn it up and the problem persists nothing changes. I cannot just change the tubes and spend like 60 EUROS to find out that they are not the problem. So I need to hear some suggestions ideas from past experiences first or what people think...

        The power amp tubes have been replaced and rebiased right before i bought it supposedly.

        And as said above the power amp section seems to work ok.


        thanks guys

        Comment


        • #5
          Originally posted by pureanalog


          Yes I played one but not the particular one. It doesnt sound like this normally if that is what you are implying.

          I bought it off ebay btw.


          Kannibul,

          I turn it up and the problem persists nothing changes. I cannot just change the tubes and spend like 60 EUROS to find out that they are not the problem. So I need to hear some suggestions ideas from past experiences first or what people think...

          The power amp tubes have been replaced and rebiased right before i bought it supposedly.

          And as said above the power amp section seems to work ok.


          thanks guys


          The tubes could have been damaged in transit, and the guy could have lied about just changing them out.

          How old are the preamp tubes? What brand?

          Comment


          • #6
            The pre-amp tubes are SOVTEK most probably the ones that it came with stock.

            I thought that pre-amp tubes need a swap every 2-3 power amp changes or so.

            The thing is how dow i check if the problem is due to the tubes and not the amp itself?

            Comment


            • #7
              I you own a tube amp, you'll probably need spares anyways. Just for debugging at the least.

              Comment


              • #8
                Simply put, that amp sucks.

                Comment


                • #9
                  Originally posted by Filter500
                  Simply put, that amp sucks.


                  I agree. IMO the DSL combos are pretty crappy. Nothing like the DSL heads. The combos have weak tone even cranked.
                  <div class="signaturecontainer"><font size="-2"><br />
                  <a href="http://www.saunalahti.fi/laxu" target="_blank">&quot;Walking the fine line between bacon and Christian.&quot;</a></font></div>

                  Comment


                  • #10
                    I don't know if can helps, here are my settings from last evening rehearsal using my DSL50... My ears are still ringing...

                    Deep switch- On
                    Presence- 3
                    Treble- 6
                    Middle- 8
                    Bass- 8
                    Tone shift- Off

                    Reverb (Ultra)- 2.5
                    Reverb (classic)- not using it

                    Volume(ultra)- 5
                    mode switch- Lead2
                    Gain(ultra)- 4

                    Volume(classic)- not using it
                    mode switch- not using it
                    Gain (classic)- not using it

                    Speaker/Cab Configuration- 1960A 4x12 cab

                    Preamp tubes- JJs
                    Poweramp tubes- Svetlana (42.5 mV)

                    My band plays mostly RATM music with some Deftones, RHCP, Chevelle, Korn and similar **************** like that.

                    When i need a clean sound, i simply roll back the volume of my guitar.

                    Main FX are running in front of my DSL50: Boss V-Wah and Digitech Whammy.

                    BenoA
                    <div class="signaturecontainer">BenoA<br />
                    <br />
                    <a href="http://www.youtube.com/benoarocks" target="_blank">BenoA on Youtube</a><br />
                    <a href="http://www.soundclick.com/bands/pagemusic.cfm?bandID=182432" target="_blank">Clips and other tunes by BenoA</a><br />
                    <a href="http://soundcloud.com/jb-aka-benoa" target="_blank">BenoA on Soundcloud</a><br />
                    <a href="http://www.guitarandsound.com" target="_blank">Guitar And Sound (GAS) forum</a><br />
                    <a href="http://www.sonicstate.ca" target="_blank">BenoA's band: Sonicstate</a></div>

                    Comment


                    • #11
                      Wow, I didn't notice it was a combo.

                      Sorry, it's got **************** tone. You'll be lucky to get anything worthwhile out of it.


                      Change tubes when they sound ****************ty, not by a schedule.

                      Comment


                      • #12
                        Originally posted by pureanalog
                        Hi folks.

                        This buzzy distortion makes the amp unusable.

                        Any ideas or suggestions?


                        Does it have reverb - have you checked eitehr the reverb driver tube or whether the reverb tank has been misplugged?

                        Try unplugging the reverb tank and see if it goes away.
                        <div class="signaturecontainer">SPAM (paypal, shipped and insured to lwr48):<br />
                        <br />
                        N'OWT!<br />
                        <br />
                        <div class="bbcode_container">
                        <div class="bbcode_quote">
                        <div class="quote_container">
                        <div class="bbcode_quote_container"></div>

                        <div class="bbcode_postedby">
                        <img src="images/misc/quote_icon.png" alt="Quote" /> Originally Posted by <strong>NICE47</strong>
                        <a href="showthread.php?p=32813953#post32813953" rel="nofollow"><img class="inlineimg" src="images/buttons/viewpost-right.png" alt="View Post" /></a>
                        </div>
                        <div class="message">**************** and mother****************ing tits, I kind of just want some mother****************ing clips</div>

                        </div>
                        </div>
                        </div> </div>

                        Comment


                        • #13
                          Originally posted by pureanalog
                          Hi folks.


                          Today I received by UPS a Marshall DSL201 20 Watt all tube amp.

                          4 12ax7 preamp tubes and 2 EL84

                          The amp sounds well when played at the clean channel with the clean channel gain control under 4-5 and master volume at moderate to quite loud levels. When gain is turned up or when I switch to the dirty channel I get this nasty distortion. Not the kind of distortion one wants but rather a buzzy and fuzzy distortion like the speaker has a problem or something. But no it is not the speaker.

                          I did this test. I hooked up the PODxt to the Effects return input and used the POD as a pre-amp. Everything sounded pretty fine.

                          So the problem must be somewhere in the pre-amp section right??

                          I swapped the pre-amp tubes positions with one another and nothing changed.

                          I emailed the guy who sold the amp to me and he claims that the amp was working fine before he sent it.

                          I also noticed that the REVERB has an effect on this problem. When turned up its nastier. But it doesnt change anything drastically though.


                          This buzzy distortion makes the amp unusable.

                          Any ideas or suggestions?


                          I bought the DSL 50 head yesterday and returned it today for that same reason. The clean channel was sweet Marshall clean and punchy but the lead channels suffered in my opinion at least at volumes one plays in their home/basement/garage. I got the MESA BOOGIE F-50 combo instead and its sweet!

                          P.S. I personally did not like the spring reverb it had. Sounded artificial to me. My Marshall MG HDFX100 head (soilid state) had better reverb than the DSL 50!

                          Comment


                          • #14
                            I don't even think the heads should be compared in this thread. I once tried a DSL201 in guitar center 3 or 4 years ago and it was a fuzzy buzzy mess. I then plugged into a TSL head and there was NO comparsion!

                            Comment


                            • #15
                              the combo's tend to suck...

                              My TSL combo is a bright ill mess... *cringe*


                              That said, I disagree with the statement "they sound horrible at low volume.."

                              I think my TSL sounds better at low volume than it does turned up...

                              Comment

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