Does the low end of this amp get better after the speaker gets broken in. I don't get to do a lot of high volume playing right now so, how can I speed the process if that's even going to help? 

Hello,

I use  a Marshall DSL 40 C and i would like to have an extension with one  Marshall 1960 AV. 

On the Marshall 1960 AV ,  connections are  : -1 x 4 ohm imput or 8 ohms right

                                                                                                       -  1 x 16 ohms imput or 8 ohms left

                                                                                                        - a selector for Mono or Stereo

I read that he DSL40C can drive either 1x16 ohms ,1x8 ohm or 2x 16ohm cabinets.  

My  questions are  : 

Can  I use the internal speaker and the external cabinet together  ? . I know that to use only the DSL 40 C , the connection is on the 1 x 16 ohms socket.

I have only  one cabinet , which selector position is correct ? Mono or stereo.

Which connections are correct  ?

Thanks for your help .

Regards

Fred

I can download and run the firmware updater on my Win 10 laptop - it then asks me to connect my CODE 25 amp. I connect the amp using a USB cable - then I see the message "An error occurred: An error occurred getting the device information from your CODE. Please try switching your amp off, and then switching it back on again."

I switch it off and on - no good. Same problem. I connect the CODE amp before running the firmware utility - same result. So I don't even know what firmware is currently in there. Is this solvable? BTW - the USB cable works, as my Marshall CODE Live Editor has connected to the amp using it.

Thx

My JVM 410C doesnt have any volume coming from the channels.

One switch works green yelow, not red.  Works fine with switch two.  Switch three works green and yellow, not red.

switch four doesn't work at all. 

No sound out of these channels without footswitch.  Same results.  Now, making a poping noise when turned off.  I just got htis amp in June.  Played a few weeks and then boom, nothing.

I tried using the FX Loop in back.  That's when this whole thing started.  As I correctly plugged in as instructions say, it immediately didn't make sound in these channels.  Unplugged, guitar going straight in, same stuff.  No volume through these channels.

The tubes are red, all glowing.

I need help.  Thanks.

Hi,

Question about connecting a Model 1982B 4x12 lead cabinet to my Model 4211 JCM800 100 watt lead combo.

I just want to be sure on the ohms before connecting the 1982B. Both have been in storage for over 30 years. I have already tested the 4211 combo and it is working fine, It has 2 x G12T-75's connected to one of the two speaker jacks in parallel, with the ohm dial set to 8 omhs. The Model 1982B lead 4x12 cabinet has 320W RMS and 8 omhs marked on the plate. So the questions are...

1. With the 2x16 ohm combo speakers in parallel the amp should be set to 8 ohms on the dial, correct?

2. If I disconnect the 2 combo speakers and only plug in the 4x12 cabinet, the amp stays at 8 ohms?

3. If I connect bothe cabinets, combo at 8 ohms and 4x12 at 8 ohms, should the amp be set to 4 ohms?

Sorry if this sounds like a dumb question, but both these things have survived over 30 years in storage, and the last thing I want to do is screw them up by being an idiot and connecting them wrong and frying them.

Thanks for any help in advance...

Les

Hi - never having used a DI out before, being reasonably new to home recording and not wanting blow up a newly purchased SC20H, the question is - can I just run an instrument cable (or speaker cable ?) from the DI Out on the back of my SC20H straight into the Mic/Instrument inputs of my audio interface (Presonus Aidiobox  USB) ? I dont have a cab for the head yet and want to start using it this way until I get a cab. Thanks in advance.

So ive been using my code50 for about a month now. Only really used it at my house and im getting on really well with it, i love it. Dead easy to use and like using a mixture of gateway and pedal.

I took it to band practice the other day, a chance for it to really show me what it can do. Turned it up to about half way on the master volume and i had this horrible screeching feedback come through every time i even touched my guitar strings. Almost as if my guitar was right up against the amp but it wasnt. 

Was fine on a clean setting, only when i had it on a distorted setting

Anyone else having this issue? 

I've tried to do this firmware update which is requested on my ACTON II. The problem is when loading firmware into the device, it is a slow process, even after starting over 5 times I cannot finish this update. Error says "We've found an error updating firmware, try again" It's frustrating. Any help will be very appreciated.

I use a marshall code25, which I have bought recently for home playing. The problem is , when the guitar is plugged in and the amp switched on I get a lot of buzzing noise. No noise when played.

I have checked the grounding and cables everything, but the noise does not seem to go away

can someone help with some troubleshooting?

.

Hello

In the manual is told not to use the Code 100 head without a speaker? Why?

I think it's not a valve amp.

Martin

Hello.

I have a marshall JVM 410 combo, and connected a extension cab JVMC 212,16 omh,I get an amazingly god sound.

Can I connect two JVMC 212 cabinet without damage the amp in any way? If not,is it a another way to connect one more cab?

Maybe I can use two 8 ohm cab?

I maybe ask silly no, but hope it is possible?   :-)

Thanks for reply.

Greetings from Norway.

I read some of the recent questions on the code lockup problems and your answer says that a new firmware update is released for this problem but when i downloaded the update and i checked the file version in windows it was the same as a previous file version i downloaded over a month ago? 

File version 14.0.23107.0

When I try to install the firmware software I get an error saying Cannot start application. Application cannot be started. Contact the application vendor. I am running windows 10.  Any suggestions would be greatly appeaciated. 

Is the DSL5CR Combo cathode bias or will I need to bias the amp after swapping tubes? Pre-amp and power amp tubes? Thanks in advance

I 'm trying to update firmware via web, the process starts ok but the page says restarting in bootloader mode and the amp screen says ready...  this for about 1 hours  but nothing changes 

Hello, i have a problem connecting my acton 2 speaker to the laptop. I find it on the laptop, pair it with the speaker and it gives out a message that the speaker has 0% battery and doesnt play anything, even though the speaker is connected through power cable. The 3,5 jack works, but bluetooth doesn't.

The last reply to this question was in June 2016, could you please update date Mac users as to when we can expect a solution to the Firmware issue please.

The manual that came with the head says use output 3 when using a single 8 ohm cab. 

The online manual on the Marshall website says to  use output 2 when using a single 8 ohm cab.

I  have plugged a single cab into these both  at different times and output 2 seems to have more volume and treble than output 3

I am slightly confused and annoyed as shouldn’t  either 8 ohm output sound the same irregardless of which one I plug my single 8 ohm cab into?

I would appreciate some clarification so that I can use the correct 8 ohm output for my speaker cab!

Update to my original post as I  have an additional question related to rear speaker outputs.

The third output speaker socket and the revised manual show this as output for 2x16 ohm. (Mine has the modified sticker attached)

Does this mean:

a: that you can plug two 16 ohms speaker cabs which have been set up in parallel into output socket 3 and the power amp sees a total of 8 ohms? .

b: output socket 3 already internally wired in parallel with socket 2 and such you plug one 16 ohm cab into socket 3 and one 16 ohm cab into socket 2, for a total of 8 ohm impedance?

c: Not sure what else could be possible?

Could you please confirm which is the correct approach? Thanks, Ross

Hi all, I was hoping I could get an owners manual downloaded for my JCM 2553 that I recently acquired. I can't seem to find the old manuals on the marshall site since they updated it. Thanks!

Hi,

I have a code 100H connected to a 4x12 cabinet.  I want to use my Boss ME-80, as I have stored a number of presets.  I have plugged my guitar into the ME-80 and the ME-80 into the input of the amp, however the volume of the amp is significantly decreased, I have turned the ME-80 volume up to max with little affect, I have also turned all the FX on The code 100H off.  The volume is very poor, worse with my Gibson SG, than with my Fender Strat. Is there a better way to set up my ME-80, e,g through the FX loop, and how would I do it.  Would this solve the problem?

Thanks