I recently got myself a Marshall Valvestate 8100 head, which sounds amazing for a hybrid amplifier. Now there is one problem with the amp, and that is that there is a low buzzing sound when I turn it on. It does not get louder when I turn up the volume or gain, and it doesn't disappear when I switch channels, which means that it can't be the pre amp tube that causes the problem. I don't use a grounded power socket, but my other amp (an Orange Tiny Terror) doesn't hum so I don't think there is a problem power wise. My guess is a bad soldering joint somewhere in the amp, but I have no idea where to start looking. Is there someone who can tell me how to get rid of the buzzing? And how do I identify a bad soldering joint?
I have a DSL1CR when replacing pre and power valves does the amplifier need biasing, is it self adjusting? And what would be good replacement valves?
New amp, out of the box the classic gain channel is very quiet. Even with it turned all the way up you can talk over it.
Probably about as loud as the red channel with volume at 1.5 or 2. All the tubes are lit up, the red channel everything
works correctly. Any ideas what to look at, I bought the amp online and dont want to return it and wait another week for
a replacement if it is something simple that I can fix on my own. (I dont have any replacement tubes on hand to try swapping out)
to whom it may concern.
I would like to ask a help with the preamp layout in JVM 410 (2007). I have found this online but it says "Assumed". As you know the tubes on board starts with with V1 a power tube to V4 so it is hard for me to assume.
Could you please confirm if this diagram is correct (bottom right of the picture)?
thanks in advance,
I have seen this a lot but just wanted your feedback.
The great amps that I have played through, such as Mesa Boogie, Carvin, Catagory 5, etc, are awesome
but they never seem to have enough gain or sustain.
Is it cool to use an ODC Fulltone or a Tube Screamer in front of a Dirty Rhythm, or Lead channel?
If so, what kind of set up's do you use?
I'm wondering what year this DSL 15 h is I'm about to purchase V01002A30U. Thanks for any help, I'm so excited to own my first all tube Marshall weather it this one or a brand new one
Hello! I have a Marshall DSL40c, which I absolutely love. I swapped the speaker out for a Celestion Vintage 30 (16 ohm) a little over a year ago, and it sounds great. However, I recently got a lower wattage tube amp (Vox AC4TV) and have been running it through the DSL40c (basically using the DSL as a speaker cab, with the power chord disconnected).
So here's the problem: After 2 days of using this configuration, the DSL has started making a sound when I play the vox through its speaker. The best way I can describe the sound is that it is like a tabmourine, like those little metal disks jingling together. It does this on certain notes, like the open low E string, or a C chord, but not on other notes like a B chord (i.e. 1 fret away).
When I run the the Vox alone through its internal speaker - no issues at all. When I run the DSL amp section alone through it's vintage 30, no tambourine sounds, although it seems that the green clean channel is lower volume than it used to be (the other 3 channels seem to me the same volume as normal). There is also some instability in the volume (goes in and out, but in a sublte way). There is some clicking and popping when I first fire it up, but this stops after it has been on for a while so not sure if this is normal or not.
I have been looking up reasons why amps may rattle, but everything I am finding describes issues with the tubes that are being played through - my issue seems to be a bit different, since the rattling (tambourine jingle) sound I am hearing seems to be coming from the Marshall when I am not using its tubes (playing through the Vox as a head).
Is it possible that a tube has gone bad in the Marshall, and when I play the Vox through the Marshall's speaker, the vibration is rattling the broken tube and making this tambourine sound? Would a reduction in the volume of the green clean channel imply it is a preamp tube vs power amp tube (since the other channels are unaffected?)
Thanks for any help you can offer. I don't mind taking it in to a tech, but I have read a lot of posts of people who took their amps to techs and had tubes changed, etc. and the problem persisted. I want to have a pretty good idea of the problem before I start investing in having it fixed.
There is a loud popping noise when I am switching from ultra gain to classic gain channel while still holding or playing, but does not occur when going from classic to ultra. Also my loop pedal's volume is significantly lowered when on the ultra gain channel. Could this be a tube or footswitch issue? Is it easily fixable or do I need to take it in so someone can take a look at it? This was also just purchased on February 3rd 2018. Any help is much appreciated because I absolutley love this amp.
Who has been working on the schematic for the new DSL 1w (2018)?
I've got mine open and have started thinking about some tone mods but would love any help with the schematic, part schematic or even a mod list.
I'd be totally happy to hack mine up first if anyone has a mod idea too.
I can read a schematic but I'd completly f%^$ it up if I tried to wrtie it out just via the PCB so if you'd like to help let me know and I'll send the high res pics ( assuming you dont have a 1w yourself).
Also I'd be all ears for some tube advice. I've put a 5751 inplace of one of the 12AX7 and its a bit better to my ears. I'm going to say V2 is the dirt channels V yeah?
So far I love it and i'll be interested to see what Blackstar do next with their future 1w.
Have just replaced my DSL5c with new version and i see valve layout has changed. Can i replace the ecc99 with a TAD12bh7a which I still have? Apparently depending on circuit or amp design this can be possible.
Also why the reduction to 2 ecc83's? Your site and Sweetwater both list this new model as having 3 ecc83's! Is my new amp wrong? Is the phase inverter missing?
Could anyone tell me which Pre Amp valvel to order for my 2525c?
Its just over 1 year old, likely 700 hours playing, and has an unwanted noise. If I play a B or B#, then there’s a rattling sound, can only describe it as china / porcelain rattling, like a cup on a saucer vibrating as a vehicle passed. Weird description I know. Definitely coming from amp and tried to by pass all pedals, still happens. Ive checked every screw etc, most people more knwoledable than me says its the pre amp Valve.
There is a DSL15 head with MX412 for sale at a good price about an hour away from where I live and I wanted to ask a couple questions before I decide if I wanna go check it out or not.
Is a 4x12 too much cab for the DSL15? I mean, will it have the same punch? I don't play in a big space so that's why I love the 15/7 switchable watts on the head. Would I be better off with a 2x12 or even a 1x12? I have a Blackheart Handsome Devil combo that has 15/7 watt option and it's great but I want a half stack configuration and, well I just really want a Marshall!
My second question is about the tubes. I notice the head uses 6V6 power tubes unlike the big guys with EL34s. Is there a big difference? I have a Fender that uses 6V6s and it's great, but I want that Marshall roar. Can the DSL15 get me to close to a good Led Zep classic rock type sound or should I go for something else?
My DSL started to misbehave after about six months since I bought it. When I turn it on, the tubes don't light up so the amp itself does not produce a single sound. Now, I have tried to send it back to the store where I bought the amp but the damn thing magically started to work there in fornt of the repairer so he said that he could not find what's wrong with it. The problem occured a few more times so I contacted one of the local electricians and he did the job and the amp finally worked. After approximately two months the same problem occured so I asked the same guy who fixed it earlier to fix it again, and again it worked. Now after a month or so, it has happened again. Has anyone experienced a similar problem? I need some advice. Thank you :)
In the manual is told not to use the Code 100 head without a speaker? Why?
I think it's not a valve amp.
I have a Code 50, so I turn to a particular preset and it includes say, flanger. how do I turn off the flanger and maybe add chorus instead. I know that the MOD section can be turned off. If it is on are the inactive effects simply zeroed out or is there a way to enable and disable each different effect. thanks. It looks like this applies to PRE EX, DEL and REV as well.
A second question is can I use the headphone out into either the guitar input or effect return of a second amp, either tube or SS?
I've had a DSL40c for a year or two, and it worked fine until a few months ago. While playing, the sound cut out and there was a slight burning smell. I replaced all tubes and pre amps and it worked fine in testing, but then did the same thing when I got it home. Repair guy thought it was a pre amp issue so changed those out again. It worked fine in testing, and then did the same thing again when we got it home. This time when we turned it back on, it would work, but sound would go up and down sporatically with some popping and crackling. Replaced the tubes again, and it worked fine for an hour. Then the sound cut out, and we noticed it would not switch channels. After turning it off and letting it cool down, we turned it on again and it worked fine and channels would change. I'm not sure what to do at this point. My weekend routine of dropping the amp off and then getting it back (with high-hopes) has gotten old. The problems have occurred while plugged straight into the guitar, as well as through a pedal board. Also, the problems have occurred via multiple power sources in different locations (i.e. not always through the same wall socket).
Thanks for your help
Purchased used amp, jcm 2000 tsl 100 2003 with 2003 1960a slant cab. Bought footswitch, being shipped. my questions are 1) will dsl 100 cover fit my tsl 100 2) where can i get replacement tubes 3) Can i get paper manuals for amp and cab 4) is there a rt angle speaker cord available
Well for some of you this should "make your day"!!! Couldn't resist posting about this!!! Hope you don't mind my "stealing your thunder" Team Marshall!!!
At least one retailer / supplier in the UK received their shipment of both the CODE100C and CODE100H yesterday!!! Unfortunately they did not receive any seperate PEDL-91010 footswitches though (so my problem is not yet solved but, nevertheless, this is good news is it not???). I see that there is a 4 x 12" CODE cab. available as well (for the CODE100H). Nice.
I have also contacted Amazon (UK) and they are contacting Marshall to see when they will receive the amps. and footswitches (and they promised to get back to me today so I will update once I hear from them).
There is also a retailer / supplier in the US that expects to begin shipping tomorrow (29th) apparently.
Unfortunately I'm "up to my ears" in Marshall CODE amps. so I cannot see myself ordering CODE100's anytime soon. But it'd be really great to hear from those of you that do indeed manage to get their hands on them (especially the CODE100H with the 4 x 12" cab.). Let us know what they're like. My bet is that they sound just as good as any 100W valve head / cab. if set up right (I still marvel at the sound of these CODE amps. to be honest i.e. unless you have a REALLY "good ear" or are a "purist" you have to listen pretty darn hard to tell the difference) (if set up correctly of course).
My DSL40C suddenly began a fading out static when the standby switch is enabled, or disabled. Also the volume knobs don't do anything, anymore. The gain knobs increase the volume, but there is really no gain. These problems began suddenly and together. I have new tubes on order. What is the most likely issue?