Full Stack Connection Question

Héctor Tamales

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Hello everyone! This is my first post in a forum which I have followed for many years. The information I have grasped from everyone has enabled me throughout a recent recording experience using my JCM800, so many thanks in advance.

Ok, so getting to my scenario: I currently have an '87 JCM800 2205 (50 watt) paired to a JCM800 1960A (angled cab); this is my halfstack. Recently, I acquired a JCM800 1982B (straight cab) because I want to go full stack.

Question(s): 'How' do I properly connect these two cabs (both 16 ohms) to my JCM800 amp head (currently set at 16 ohms)? I ask because I am overly cautious about damaging my unit if not done correctly. What is the 'correct setting' before I plug these two cabs into the two loudspeaker outputs? Does it matter which cab goes into which output?

For context, please see the attached photos, and thanks again in advance for the help and input! Again, everyone has been a tremendous help and as asinine as this issue may be to many, I am approaching this cautiously and relying heavily on your expertise.

Héctor Tamales
 

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set to 8 ohm:

20210920_223957-jpg.94812


plug each speaker out to each cabinet...

If the cabinet's have those stereo inputs, w/ the different settings, make sure that they are set to 16 ohm mono, & that you are plugged into the right side (16 ohm)

The way it works (simplified), is you have 2 16 ohm cab's. You split the load, so you divide the impedance.

16/2=8 ohm...
 

Héctor Tamales

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set to 8 ohm:

20210920_223957-jpg.94812


plug each speaker out to each cabinet...

If the cabinet's have those stereo inputs, w/ the different settings, make sure that they are set to 16 ohm mono, & that you are plugged into the right side (16 ohm)

The way it works (simplified), is you have 2 16 ohm cab's. You split the load, so you divide the impedance.

16/2=8 ohm...

Sweet! To answer your question about the rear inputs, they only have one (both rated at 16ohms). Many thanks!

Héctor Tamales
 

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