Mosvalve Speaker Wiring

[RobotZombie23]

I have a Mosvalve 500 Amp for I use for Bass Guitar. It was hooked up to 2x12in speakers. Each 8 ohms. I think I didn't have it wired correctly. I'm moving all my equipment into another room and want to hook it up right this time. I want to make a back panel for the speaker box and was thinking of what connectors to use. I was thinking of using Banana Connectors on the cabinet but now I'm thinking 1/4in jacks. I think I want to hook up the speakers in parallel? and only use channel A on the amp.
The manual says: Min. 4 ohm per channel: One 4 Ohm system; Two 8 Ohm systems (in parallel); Four 16 ohm systems (in parallel).
and it says 8 ohm loads allow the most musical operation of Mosvalve technology
running them in parallel would be 4ohm load so I wont get "the most musical operation"?

I had it wired straight from the banana plugs directly to each speaker.

How do I properly hook this gear up?

 

[JohnnyCreepy]

Rated speaker impedance is nominal value as impedance varies greatly with frequency. Usually it’s fine to mismatch amp output and speaker impedance double over suggested value in amp, but you have to remember it can change load on output transformer/circuit and cause less or more heat stress. If you play loud I’d consider new speakers as your current speakers are rated 200W and MosValve could output 380W@4ohm. Maybe try speakers both parallel (combined nominal rating 4ohm) and in series (16ohm). Then listen which one sounds best and keeps amp coolest?

 

[RobotZombie23]

I'm definitely not playing loud just using it as a practice amp in a small room. I couldn't even go 1/4 on the gains without rattling the rafters as it was wired (in stereo) and really not trying to buy new speakers for this. I'd rather spend the money on making more pedals lol.

It says "One 4 Ohm system; Two 8 Ohm systems (in parallel)" system means speakers her right? I think I will wire them in parallel

 

[JohnnyCreepy]

One 4ohm system could be 2x8ohm parallel speakers or cabinets connected to ONE output jack and two 8ohm systems connected to TWO output jacks makes ’em parallel too and gives same 4ohm. System is speaker or speaker system with multiple speakers.

 

[jwin615]

I'd go 2 in parallel. Then you still have an output if you ever need another cab. It would need to be a 4 ohm cab too btw.
I would avoid banana jack.
Speakon/TS combi jacks for the win for me.

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You can use TS but speakons are really nice and crucial IMO for higher wattage. You could also use both amp outputs to a single 4 pole speakon and split back to each speaker, but you'll loose the TS combo as that's only 2 pole IIRC

 

[JohnnyCreepy]

It would need to be a 4 ohm cab too btw.

Amp outputs are most likely parallel so two 4ohm cabs are 2ohms combined with what you suggest. It could be manageable, but could cause excessive heat and output power.

 

[jwin615]

Amp outputs are most likely parallel so two 4ohm cabs are 2ohms combined with what you suggest. It could be manageable, but could cause excessive heat and output power.

Wasn't sure since it's a stereo amp...

 

[JohnnyCreepy]

In stereo mode A/B channel outputs are not parallel, but RobotZombie stated using only A channel. A has two parallel mono outputs.