Harmony Central Forums
Announcement Announcement Module
Collapse
No announcement yet.

Ibanez TSA15H Concerns?

Page Title Module
Move Remove Collapse







X
Conversation Detail Module
Collapse
  • Filter
  • Time
  • Show
Clear All
new posts

  • Ibanez TSA15H Concerns?

    I am looking for a low wattage tube amp to use at home and the current leader is the Ibanez TSA15H.



    There are however two things that im worried about.



    #1. If im not mistaken the FX loop on the TSA is not a real FX loop, meaning that it will put any effects plugged in to it behind the TS but before the preamp? How does this work with reverb? Wouldnt it be bad to put a reverb before the preamp? Maybe works well as long as the TS is the only source for gain, but what if you crank the clean channel?



    #2. Im worried about the level of noise coming from the TSA15H. I read that you can hear a humming sound from the amp? Any TSA owners out there that can report how your amps behave? Since ill be playing 99% of the time in my living room i want it to be as silent as possible.



    Thanks!
    <div class="signaturecontainer">Gibson LP Special Faded<br />
    Fender Deluxe VM<br />
    Boss GT-8<br />
    <font color="green">Member, OFFICIAL Bad Monkey Club</font></div>

  • #2
    Got a chance to try the TSA15h today at my local music store, really liked it. Difficult to tell how much noise it omitted since the overall noise level in the shop was louder than it will be in my livingroom . However, i noticed that when i increased treble or tone on the built in TS the humming increased significantly, is this normal?
    <div class="signaturecontainer">Gibson LP Special Faded<br />
    Fender Deluxe VM<br />
    Boss GT-8<br />
    <font color="green">Member, OFFICIAL Bad Monkey Club</font></div>

    Comment


    • #3
      My tSA15H is dead quiet with JJ preamp tubes and Tesla 6V6's. Yes, the loop is between the TS and preamp. The TSA15 amp doesn't break up until it's real loud or driven with hot pickups. Tone controls are not like other amps, I keep mine below noon or it gets too bassy or brittle.
      <div class="signaturecontainer"><a target="_blank" href="http://www.sesystems.com/">SE Systems, pro-audio dealer serving North Carolina</a></div>

      Comment


      • Varndoggie
        Varndoggie commented
        Editing a comment
        I know this thread is over a year old. But was the amp more noisy with the stock tubes. I'm only asking because I just bought a tsa15h on eBay and it does hum especially on the 5watt setting. If a set of jj's will get rid of or at least reduce it I'm all for it. I'd just like to know about the before and after.

      • Varndoggie
        Varndoggie commented
        Editing a comment
        Did you get the amp with jj tubes in it or did you swap them out . I'm asking because my tsa15h hums and I'm wandering if a jj swap would quiet it down.

      • WRGKMC
        WRGKMC commented
        Editing a comment

        You always want to start with the simplest causes and rule those out first. When you have noise or hum, you should put the blame on the cause using some simple deductive reasoning.

        The first question is, does the amp hum with nothing plugged into it? If it does, then the hum is coming from within. If it doesn't it is coming from without.

        If you plug in a guitar with the amp turned down and there's no hum until you turn the amp up, then that hum isn't a fault of the amp. An amp does what its supposed to do which is amplify what its being fed. If you have a high gain preamp stage any hum getting into the guitar cable, or into your guitar cavity is going to be amplified. This hum will increase as you turn the volume up and disappears when you unplug the guitar.

        If this is your problem its likely caused by poor shielding and crappy guitar cord. It can also be foot pedals run with bad wall warts. Pedals like Boss require zero hum wall warts so they get smooth DC voltage like a battery provides. A cheap generic wall wart can have allot of AC ripple getting into the pedal and it contaminates the signal going to the amp.

        If there are no pedals, then the guitar may have single could pickups that do not humbuck and the wires inside are unshielded. Adding grounded copper foil to the cavity and pickguard stop the guitar wiring from acting like an antenna and block stray magnetic waves which are being picked up and amplified by the guitar amp.

        If the amp hums with nothing plugged in, and this is a tube amp, then is usually caused by faulty filter caps or bias imbalance. Power caps can get old and fail to do their job filtering the half wave AC into smooth DC. Tubes run on DC voltage, not AC voltage so "tubes don't generate hum", they only amplify the hum that's being injected into them from some other source.

        The exception would be a Rectifier tube getting weak. If the amp has a rectifier tube it may not be producing a equal half waves as it converts a full 60hz AC cycle into a 120hz pulsating DC wave.  The 1/2 waves are smoothed by power caps so the voltage isn't a series of bumps. If the tube is weak one hump may be larger than the next, and the filter caps may not be able to convert the 120hz ripple (2X60hz) into smooth DC. That ripple may then contaminate all the other amplifying circuitry throughout the amp and cause hum.

        You can also have hum if the amp uses a pair of tubes in a push pull configuration and the two aren't  properly biased to null stray EMF. The symptom is you hear a low hum with nothing plugged in and the amp turned all the way down so you only hear the power amp running. The hum does not increase as the amp is turned up.

        In this case Pairs of power tubes are biased to null any stray emf. Unbalanced tubes can be like an car with a bad spark plug that has a bad engine vibration. When the cylinders fire on time with equal power the engine runs smooth and quiet.  Power Tubes are sold in matched pairs so they counter balance each other. If someone replaces tubes without biasing them one of the two may be amplifying more and picking up the stray EMF or taxing the power caps.  

        I haven't looked at the amp schematic so I'm not sure if this amp is a push pull amp or has a rectifier tube, but those are the possibilities, AC hum being fed into the amp externally, Tube Bias, Filter caps, or Rectifier tube.

        If the problem is internal it should be an easy and inexpensive fix for any qualified tech to fix. Changing out the preamp tubes can be done yourself. Preamp tubes don't cause hum but they do make some preamp tubes with heater elements wound to help prevent hum from getting into the tube if the DC voltage has AC ripple. 

        You can also change the rectifier tube if the amp has one to rule out it being the cause. You can buy a matched pair of power tubes to save money but you should have a pro install and bias them. This usually requires a burn in period where the tube bias is tweaked over at least 24 hours of running to get the best bias balance. He would also know if your power caps are doing their job smoothing out the ripple and replace them as needed. Caps degenerate quickly when an amp isn't being used so even if the amp is relatively new it may need new caps due to non use (like rechargeable batteries not being charged they can corrode inside and short out)


    • #4
      I ended up buying TSA15H+TSA112C and it is indeed very noise-free. There is no problem (noisewise) to turn the treble to max. I think the one i tried in the shop must have been faulty (or the combo is much more noisier).
      <div class="signaturecontainer">Gibson LP Special Faded<br />
      Fender Deluxe VM<br />
      Boss GT-8<br />
      <font color="green">Member, OFFICIAL Bad Monkey Club</font></div>

      Comment


      • #5






        Quote Originally Posted by wanner
        View Post

        I ended up buying TSA15H+TSA112C and it is indeed very noise-free. There is no problem (noisewise) to turn the treble to max. I think the one i tried in the shop must have been faulty (or the combo is much more noisier).




        Can you give a little bit of a review of the amp? I'm interested in these amps.

        Comment


        • #6






          Quote Originally Posted by SnowStorm
          View Post

          Can you give a little bit of a review of the amp? I'm interested in these amps.




          me too
          <div class="signaturecontainer">DJChrispy<br />
          <br />
          &quot;**************** RHYTHM, I PLAY LEAD&quot;<br />
          <br />
          <br />
          <br />
          <img src="http://img3.harmony-central.com/acapella/ubb/smile.gif" border="0" alt="" title="Smilie" class="inlineimg" /> Sorry for my bad englishhhhh</div>

          Comment


          • #7






            Quote Originally Posted by SnowStorm
            View Post

            Can you give a little bit of a review of the amp? I'm interested in these amps.




            Sure, i have the TSA15H + TSA112C. I tested the combo version as well but much prefered the head + cab since the combo was very noisy (probably a bad copy?).

            I am only using it in my home at apartment-volumes so i cant say anything how it performs in smaller live venues.



            I am very happy with mine, using it together with a Les Paul (490R/498T). I have no problem with noise and i think that the amp is pretty versatile. I play mostly clean/blues/rock and think the amp performs very well for my needs. The built-in tubescreamer gives a very nice smooth warm distortion. I wouldnt say it's well-suited for metal, maybe with a distortion pedal, not interested in that type of music so can't really say.



            The only thing im missing is a proper FX-loop. From what I've read the loop in the TSA15 will let you put stuff after the tube screamer but before the actual amp. However since the amp takes alot of pushing before breaking up i guess this is not a big problem. Still would be nice with a true fx loop. With that said Im using mine together with a Zoom G3 in the loop and is very happy with it! Using effects and the looper(!!) from the G3, distortions, reverb, delay etc and keep the amp-models turned off.



            Also, a minor note is that i wouldnt be surprised if the white cover got dirty pretty easily.



            I'll gladly, if im able to, answer any specific questions you have.
            <div class="signaturecontainer">Gibson LP Special Faded<br />
            Fender Deluxe VM<br />
            Boss GT-8<br />
            <font color="green">Member, OFFICIAL Bad Monkey Club</font></div>

            Comment


            • #8
              i think ibby is onto something here.
              <div class="signaturecontainer">great deals with Urinate Forever and stratedge09<img src="http://img3.harmony-central.com/acapella/ubb/thumb.gif" border="0" alt="" title="thumbs up" class="inlineimg" /><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>DrakkarTyrannis</strong>
              <a href="showthread.php?p=45890001#post45890001" rel="nofollow"><img class="inlineimg" src="images/buttons/viewpost-right.png" alt="View Post" /></a>
              </div>
              <div class="message"> Ya'll n****s is gay<br />
              <br />
              <br />
              <br />
              Cheers, Lucius.</div>

              </div>
              </div>
              </div> <br />
              <font face="Comic Sans MS"><font color="DarkOrange">the.Orange.congolomorate</font></font> Thunderverb 50 sucka! <br />
              <font face="Impact"><font color="DarkOliveGreen">SG ARMY</font></font></div>

              Comment


              • #9
                I really like the concept of it. I was looking at the 30 watt combo actually. I like a one channel amp with a good clean channel for a pedal platform. I don't think the effects loop you're talking about would bother me.

                Comment


                • #10


                  http://www.youtube.com/watch?v=nGKDsHM6PMU
                  <div class="signaturecontainer"><a target="_blank" href="http://www.sesystems.com/">SE Systems, pro-audio dealer serving North Carolina</a></div>

                  Comment


                  • #11
                    I run a two 15 watt amp setup. I've got my TSA15H (w/ matching cab) setup beside my Egnater Tweaker (w/ Rebel cab). The Egnater is definitely quiter, but here's the thing: Neither are particularly loud, noise wise. I notice the hum when I turn on the TSA15H, but after that, it's a complete non-factor for me. I don't notice it at all after that. As others have said the low end and high end are really defined and prominent with bass and treble at 12 o'clock. I tend to turn both down to about 9 o'clock. Even still, it has very crisp high and boomy lows. I've run the TSA15H through my Egnater Rebel cab and the tone is MUCH better. Slightly less trebly highs and boomy lows. So I've got a question: Has anybody replaced the Celestion Seventy 80 with a higher end speaker? If so, how'd you do it? I unscrewed every screw on the front of the grillcloth, and I still couldn't get the grillcloth to come off. Also, from the back, there's no way to get the speaker out. It's gotta come from the front. Am I just an idiot that overlooked something, or has Ibanez made it so you can't switch speakers without tearing out the grillcloth?

                    Comment


                    • Danplifier
                      Danplifier commented
                      Editing a comment

                      So I've got a question: Has anybody replaced the Celestion Seventy 80 with a higher end speaker? If so, how'd you do it? I unscrewed every screw on the front of the grillcloth, and I still couldn't get the grillcloth to come off. Also, from the back, there's no way to get the speaker out. It's gotta come from the front. Am I just an idiot that overlooked something, or has Ibanez made it so you can't switch speakers without tearing out the grillcloth?

                       

                      Yes I've replaced mine. It comes out the back. Remove the metal grill and the 4 screws on the back pannel, and then you have to hit the panel from the inside. Take the power tubes out first because there's not a lot of space in there. 

                      I used a hammer-head inside a sock and tapped the corners from the inside. You might have to hit it harder than you'd like on such a beautiful amp. But as long as you're hitting it in the right places (the edges) it shouldn't damage it. I think some of the adhesive must have leaked into the dry joints, because it took quite a bit of force to get it off, but it came off clean and undamaged. 

                      I've actually left the pannel off mine to get an open back sound. But I've put the metal grill back on to protect the tubes. 

                       

                       The only thing im missing is a proper FX-loop. From what I've read the loop in the TSA15 will let you put stuff after the tube screamer but before the actual amp. However since the amp takes alot of pushing before breaking up i guess this is not a big problem. Still would be nice with a true fx loop. With that said Im using mine together with a Zoom G3 in the loop and is very happy with it! Using effects and the looper(!!) from the G3, distortions, reverb, delay etc and keep the amp-models turned off.

                       

                      I never knew this. This might actually benefit me.

                      I've got a Boss OD3 which I use a lot but it doesn't sound too great when I'm using the TS at the same time. So do you think it will work better in the loop so that the TS is boosting the OD3 and not the other way round? Also, what else would I be able to throw in the loop? Wah?

                      Please can someone answer ASAP. I've got a gig tonight and I wouldn't mind trying it if I knew it would work and not damage anything.

                      Thanks in advance,

                      Dan


                  • #12
                    Originally posted by fortress55 View Post
                    <DIV class="bbcode_container">
                    <DIV class="bbcode_quote">
                    <DIV class="quote_container">
                    <DIV class="bbcode_quote_container"></DIV>

                    <DIV class="bbcode_postedby">
                    <IMG src="http://www.harmonycentral.com/images/misc/quote_icon.png" alt="Quote" /> Originally Posted by <STRONG>SnowStorm</STRONG>
                    <A href="http://www.harmonycentral.com/showthread.php?p=47220807#post47220807" rel="nofollow"><IMG class="inlineimg" src="http://www.harmonycentral.com/images/buttons/viewpost-right.png" alt="View Post" /></A>
                    </DIV>
                    <DIV class="message">Can you give a little bit of a review of the amp? I'm interested in these amps.</DIV>

                    </DIV>
                    </DIV>
                    </DIV> me too
                    Was going to say the picture thing doesn't work, but I see it is posted below.
                    &quot;Any man who thinks he can be happy and prosperous by letting the government take care of him better take a look at the American Indian.&quot; Henry Ford

                    Comment

                    Working...
                    X