Connecting Marshall 1922 ext cab to dsl40

[MRotter]

It's probably been asked before - I'm a newbie - I have a DSL 40 and a 2x12 1922 - is there a way that all 3 speakers can be used or is it one or the other. Apologies and thanks in advance.

 

[fitz]

It's probably been asked before - I'm a newbie - I have a DSL 40 and a 2x12 1922 - is there a way that all 3 speakers can be used or is it one or the other. Apologies and thanks in advance.

to the forum.
If the speakers are stock in the DSL40 (16 ohm) and the 1922 (2x 16 ohm - 8 mono/ 16 stereo) the impedance mismatch is not advisable.
BUT, it also depends on which version of the DSL 40 you have.
The older C version with 3 speaker jacks cannot do the impedance mismatch.
The newer CR version with 5 speaker jacks can.

 

[Dogs of Doom]

It's probably been asked before - I'm a newbie - I have a DSL 40 and a 2x12 1922 - is there a way that all 3 speakers can be used or is it one or the other. Apologies and thanks in advance.

to the forum...

yeah, you can hook them up, but you'll need to hook them up a certain way...

exactly which DSL40 do you have? 40C, 40CR?

is the 1922 cab 8 ohm, or 16 ohm?

do you still have the stock 16 ohm speaker in the combo?

 

[Mitchell Pearrow]

To The Forum

I have the older Dsl40c’s, and I have ran the mismatch 8ohm MG cab, and the amps internal 16 ohm speaker, by plugging them both into the 8ohm taps..
I will not recommend you do this .. but I have been doing it since I bought them.. in 2015 . But I also don’t go crazy with volume.

About 3-4 is all I have done with a drummer.
But I have never experienced a problem yet.

But as I said, I do not recommend this method.

Enjoy your amp they are a great tone finding Marshall product

 

[MRotter]

to the forum...

yeah, you can hook them up, but you'll need to hook them up a certain way...

exactly which DSL40 do you have? 40C, 40CR?

is the 1922 cab 8 ohm, or 16 ohm?

do you still have the stock 16 ohm speaker in the combo?

Both are stock and both are 16ohm so I think it will work - where do I plug them in?

​

 

[MRotter]

It's probably been asked before - I'm a newbie - I have a DSL 40 and a 2x12 1922 - is there a way that all 3 speakers can be used or is it one or the other. Apologies and thanks in advance.

 

[fitz]

Ok, that's a 5 jack CR.
This may sound crazy, but put the 16 ohm internal speaker in one of the 1x8/2x16 jacks, and put the 1922 cab (set to mono 8 ohm) into one of the 1x4/2x8 jacks.
That gives 2 half loads on the output transformer.
You'll never see this in any Marshall manuals, but it's been confirmed multiple times by a former Marshall amp designer as perfectly safe for the amp to operate like this.

 

[MRotter]

Ok, that's a 5 jack CR.
This may sound crazy, but put the 16 ohm internal speaker in one of the 1x8/2x16 jacks, and put the 1922 cab (set to mono 8 ohm) into one of the 1x4/2x8 jacks.
That gives 2 half loads on the output transformer.
You'll never see this in any Marshall manuals, but it's been confirmed multiple times by a former Marshall amp designer as perfectly safe for the amp to operate like this.

Ok, that's a 5 jack CR.
This may sound crazy, but put the 16 ohm internal speaker in one of the 1x8/2x16 jacks, and put the 1922 cab (set to mono 8 ohm) into one of the 1x4/2x8 jacks.
That gives 2 half loads on the output transformer.
You'll never see this in any Marshall manuals, but it's been confirmed multiple times by a former Marshall amp designer as perfectly safe for the amp to operate like this.

Thank you so much - I would have never figured that out!

 

[MRotter]

Ok, that's a 5 jack CR.
This may sound crazy, but put the 16 ohm internal speaker in one of the 1x8/2x16 jacks, and put the 1922 cab (set to mono 8 ohm) into one of the 1x4/2x8 jacks.
That gives 2 half loads on the output transformer.
You'll never see this in any Marshall manuals, but it's been confirmed multiple times by a former Marshall amp designer as perfectly safe for the amp to operate like this.