I have a DSL40cr. I also have an 8 ohm (2x12) cabinet.  The DSL40 onboard speaker is plugged into the 1@16 ohm input.  When I run my 8ohm cabinet (plugged into the 1@8ohm output), can I run the onboard speaker at the same time, or do I need to unplug it? Asked another way, can I run the onboard 16ohm speaker and the 8ohm (2x12) cabinet at the same time?

I have a technical query that I'm sure professionals like yourselves can help me with.

I bought a Marshall Code 100 H amplifier and a Marshall Cabinet model  Cabinet Marshall Marshall MX412BR from you.

 The first observation is that when we're rehearsing, with my 100W of power, I can hardly hear myself, and it seems like my amplifier can't provide more power. In contrast, my bandmate has a Fender Classic 40W, and it seems excessively louder compared to my 100W. My potentiometers are almost at "10," whereas my bandmate's are at "5."

 This is the first difference I can't understand. The next question relates to power and impedance. If my cabinet is 16 ohms and my amp head is 8 ohms, I see that it's half, is this normal, or should the amplifier also be 16 ohms, or should the cabinet be 8 ohms? In the specifications of my amplifier, it says: Output: Speaker output 8 ohms minimum impedance.

 I hope you can please help me solve this problem, as a Marshall 100W amplifier Code 100 H sounds very distant and as if it were only 30W of power.

 Thank you very much.

Context:

I have a Marshall DSL100 head and a MX212 cabinet. According to the Marshall website, the MX212 is an 8 Ohm cab and it has 2 Celestion Seventy 80 speakers (80W, 16 Ohm each).

Based on this, I supposed that the cabinet should be wired in parallel (16 Ohm / 2 speakers = 8 Ohm cab), like in the following diagram:

Currently, I have the speaker cable plugged from the 1x8 Ohm output to the input of the cab. It works perfectly and I haven't had any problem after almost 2 years of use.

The issue started when I decided to check the inside of the cab. I noticed that the speakers are wired like this:

From what I understand, this may also be another type of parallel wiring (If that exists). I would like to know if this is normal or something is wrong.

Thanks.

 Hello:

We are new to amp and cabs and need some help with some test results we're getting from our AVT150HX amp connected to our 1960A cabinet.

We included images from the back of the AVT150HX amp and the page in the manual of the 1960A cabinet that outlines the use of the connections panel on the back of the cab.

Here is a summary of what is happening.

1. When we run a speaker cable from either of the two output jacks from the amp to the #3 connector on the back of the cab, we get no sound. This happens whether the cab is in mono or stereo.

2. When we run a speaker cable from either of the two output jacks from the amp to the #2 connector on the back of the cab in stereo mode, we hear the right-side speakers clearly. We also think we somewhat hear the left-side speakers, but that may be bleed we're hearing from the right-side speakers. Not sure. It's a bit hard to tell because the sound is very muffled and not as loud, but it does seem like some sound is coming from the speakers.

3. When we run two speaker cables from both of the output jacks from the amp to connectors #2 and #3 on the back of the cab in stereo mode, we get the same results as #2 above.

Does this mean that the left-side speakers are disconnected or damaged somehow? Or are we making a mistake in the way we are making the connections?

Thanks in advance for the help.

-Eli

Good afternoon.

I have just acquired a vintage Marshall Speaker Cabinet, serial no 06615. I am trying to identify the cabinet / model type / year of manufacture & speakers. I have learned I will need to access the speakers themselves, but access to this seems to be only from the front. Do I need to remove the screws from the front to access, and does the white beading around the edge of the grill need removing, or will it come off when I remove the grill? Don't want to cause any damage, hence asking for any help!! Also, the colour (same all over) - is that a standard colour? And finally - am I likely to find 2 or 4 speakers in the cabinet!? Many thanks.Rob

I've just bought a Marshall CODE 50 and after playing a bit with it and experimenting around with the settings, I came to a conclusion that the cabinet models sound better recorded with the direct input than through the amp speaker when playing.

Just wondering if anyone thinks the same. Sorry if I couldn't make it more clear, English isn't my native language and I don't know how to fully express myself.

Hi Marshall, 

I just purchased the DSL20HR and 1912 lead cabinet, which is great. However, there are late nights that I want to play through my headphones.

I read the manual and I read the previous questions on here about headphone use. There's conflicting instructions and support advice between the manual and what I have read here. 

Can you please clarify step by step how to safely plug a set of headphones into the emulated output jack of the DSL20HR? The manual says to "NEVER use the DSL20HR...without a speaker load", however,  advice here from the Marshall team had stated to unplug the cabinet from the amp, plug in the headphones, and then not to forget to plug the speaker back in when done using the headphones.  This is conflicting and I am afraid to try either. 

Please help. Thanks 

Adam

Hello,

I am wanting to run the 1960AX cabinet with my 2555X Silver Jubilee, since the power handling capability is listed as 100w for the cabinet, would the head be too much for it in 100w mode? What if I ran it as a full stack with a 2551BV in 100w mode? I just want to make sure that I don't blow any speakers or my amp. What is the best way to run this cabinet with the full size silver jubilee?

Thanks!

Hi there ,
I recently bought a DSL1CR and see that the one speaker output states 1x16 ohms. 
I am aware it can be run without a speaker for silent listening through the emulated output. 
Can I connect my 8 ohm 1923 external 2 -12 cabinet to the DSL1's 16 ohm speaker output and run it safely? 
Thanks,
Russ

I have a Model 1960B 4x12 cabinet that I purchased used around 1980, and I'm trying to find out what year it was manufactured (see photos).  The serial number is "3479".  The speakers appear to me to be the original Marshall-labelled Celestion speakers, part number "T3120".  Three of the speakers have a stamp near the part number stamp that reads "AM8".  The fourth speaker has a stamp that reads "CM20".  I assume these are likely Celestion manufacture date codes, but not certain.  Only one of the four speakers has a stamp that reads "15 ohms" (but using the omega symbol).  The speakes are wired series-parallel.  According to the nameplate, the cab is rated at 16 ohms (apparently actually 15 ohms), and 100 watts.

Based on the excellent condition of the cab when I bought it, I am assuming it to be mid to late 70s vintage, but would like to know the exact year, if possible.  I saw a post on another forum that claimed the OEM "T3120" speakers are actually Celestion G12-65 speakers, but simply OEM-labelled for Marshall, and that they only came that way preinstalled from the Marshall factory.  Is that true?  From the Celestion website, I see that they still sell "Heritage Series G12-65" speakers, and they are available in 8 ohms or 15 ohms.  The new G12-65 speakers shown on the Celestion website look the same, down to the round mesh vent in the center of the magnet assembly.  The above details would seem to confirm that the T3120 speakers are indeed 15 ohm G12-65s.  If true, that implies that the cab will actually handle up to 260W (not much risk of blown speakers with a 100W head).

I would greatly appreciate any help that anyone can provide.

Cheers,

James

Hello, everyone,

I would like to ask you a question since I am not a very experienced guitarist...

I have a marshall 100 hdfx head and would like to purchase a 4x12. I have seen these two models: 

1. Marshall CODE 412 Cabinet

2. EVH 5150 Iconic Series 4x12 Cabinet Black

I have a two part question 🤔.  I have my two amplifiers listed above.  I have both electric and electric acoustic guitars.  I'm learning how to play and bought the 50 watt acoustic Amp as I  really like the sound of over wound humbuckers through it for heavy slow blues.

First question,  keeping the AS50D as the main sound, can I connect it through/to the 100 watt Marshall? Both are 4 ohms and I would like the maximum amount of power to drive my 4 x 12" cabinet of 8 ohm Jensen Tornadoes that are wired in series for the 4 ohm 100 watt MG HDFX. Then I would have 150 watts total to drive my 400 watt total limit.

Question two,  can I connect my 50 watt AS50D Amp to my 4 x 12" speaker cabinet by running a cable from the back of my Amp to the cabinet. I have footswitch,  line out and (effects loops) send and return Jack's to use.

  Even though my 4 x 12" cabinet would be very under powered. I would like to hear the sound of the AS50D  through those speakers. I'm new to guitar and don't want to ruin any of my equipment.  I did also have a guitar made through two luthiers,  I also made the 4 x 12" cabinet to match my guitar.  I call them Snort and the box.

  I have the components for the sound I'm looking for,  now I need to combine them all together.  I truly appreciate guidance from the technical support team at Marshall. 

God bless you for your time and kindness.  Thank you,  Eric Dailey 

Hello,

I often play my origin 20h without the speaker connected, using the internal dummy load (no speaker cable connected).

My question is: can I leave the speaker cable connected to the origin, but NOT to the cab? Or thay it's going to deactivate the internal dummy load, as the cab was connected?

It would be easier for me that way, to occasionally use the cabinet without turning the head to reach the connector, but I ask because I don't want that to damage the amp.

Please let me know, thanks and regards

Has anyone used a small pedal amp to input the headphone to a amp like the electro harmonix 5MM.  I saw this done on a Spark amp to connect to a speaker cabinet.  I would think I could do the same on the CODE.  Adapt the 1/8 to 1/4 to go from headphone jack to the input on the 5MM and then in my case that speaker cable goes to a mixer.  I know this amp does have a dedicated line out to do what I want to do.  So I think this would accomplish the same thing.  Any thoughts good or bad?  I plan to try as soon as I get my hands on a small pedal(not a stomp box, just a pedal size amp) and configure the cables to go from 1/8 headphone to the 1/4 input on the amp.  I'm not an electrical engineer, I just need a "line out" if possible.  Should work.  Thanks,

Hello, I recently ordered a used JCM800 Model 1580 Bass Cabinet.  The seller's photos show it with one 18 inch Celestion G18Q-400 speaker.  I've learned that they were made in the 1980s-90s, and came in mutliple speaker configurations. Mine is the 1x18.  I'm assuming the cab originally came with the G18Q-400?

Would really love to know:

1. the performance specs of the G18Q speaker (Celestion.com didn't have any info)

2. whether the round port cut in the baffle of the cab is original. 

See picture below.  Thanks!

I have two identical Marshall DSL 100 watt heads. One of them was starting to crackle when I turned up volume on either clean or distortion channels. It  finally quit and assumed it was just dust in pod. However  a week ago turned amp head on and neither green light for clean channel or red light for distortion channel were coming on and no sound at all from either channel coming coming through speaker cabinet. Trying to get some help on what could possibly be wrong causing me to lose sound from amp head. Thanks

I noticed there is an emulated out on the back of the 20Watt Dsl head. From reading the .pdf manual, I understand that the head needs to stay connected to the speaker cabinet. So I know to never un-hook it, however - My questions being - 

Do I need to be in Stand-By mode to actually use the headphones? If not, will the sound still come from the speaker cab? 

Also, can I just plug my headphones directly into the Emulated Out? the .pdf manual says the Dsl20 Emulated Out supports Headphones. But I've seen people comment in other places that you need a headphone amp that increases volume or something. I haven't been able to test with headphones yet, and I kinda' wanna' get the right answer on this before I try. Thanks. 

Loving the Amp and Speaker cab though haha. Just came in yestreday. 

I have 3 combo amps each with a single 16 ohm speaker. baffles the heck out of me why Marshall would recommend a 2x12 8 ohm ext cabinet. I want to run both the internal speaker and the ext cabinet at the same time. I would like to put 8 ohm speakers in the combos to match the ext cabs. I have a JCM 2000 DSL 401, a DSL 40cr And an Origin 1x10 20 Watt. Can a16ohm speaker be upgraded with an 8 ohm speaker in these combos and if so what speakers would you recommend. Any additional suggestions or information is most welcome.

Can you please show me which jack i should use to plug my head into the cabinet. I have a new 2 weeks old, Marshall DSL 20 HR Head with the MX212RR Marshall cab. On the back of the head it has 3 jacks for to plug into the cabinet and i dont know which is the best. It has lines pointing to the OHM's but the lines dont line up with the different ohms and its hard to tell which one to use. Anyway of sending me a picture or explaining which jack i should use please. Ive looked every where, youtube, online googled and cant find any info on which jack to use from thr back of the head to plug into the speaker cabinet. Thank you

If I change to an 8 ohm V-series speaker in my DSL40CR, do you foresee any problems using it with an 8 ohm MX212AR cabinet , if I plug into the two 8 ohm speaker outputs ? .......................thanks............RD