Ampeg SVT3 Pro parallel speakers

[unclespats]

I’ve got an Ampeg 210 Pro Neo 550w 8ohm cab and just about to get a GK cX115 300w 8 ohm cab.

 

I want to get max ouptut from my SVT 3 Pro which I understand will be with a load of 4 ohm, so I need to put the cabs in parallel.

 

my question is this - if I just plug one cab into each speaker output on the amp, will this put them in parallel?

 

Thanks in advance!

[Downunderwonder]

Yep. Hopefully 1 plus 1 equals 2 with regard to the cabs sounding good together.

 

If you get a real bollox of a low end it will be a gross +- polarity difference. Unlikely, but easy fix.

 

The rest is down to serendipity for the mids to match up nicely.

 

When I was running oddball cabs they sounded good enough together. A couple of times I went above and beyond to fully crossover biamp them high low and there was a distinct improvement in fidelity. It wasn't a big enough improvement to justify all the extra gear cartage.

 

The takeaway was phase reproduction differences between cabs is a real thing.

 

 

 

 

[unclespats]

Just taking a closer look at the Ampeg outputs, I see have 1 x Speakon and 2 x Jack. Wondering if I can just use the Speakon plus one of the jack outputs - will that still give me the impedance I need?

 

Also - why is there only 1 Speakon output I wonder?

[unclespats]

Looking at the owners manual, it appears all the outputs (speakon and jacks) are in parallel. 
 

so, it looks like I will need to use speakon to connect the GK (which only has speakon) and jack to jack (or jack to Speakon) for the Ampeg.

[unclespats]

or I could use the speakon output from the amp and daisy chain the cabs I think. 

 

I thought initially that daisy chaining the cabs would put them in series, but it appears it would put them in parallel, so I stand corrected (I just love these orthopaedic shoes)

[moley6knipe]

Yeah, it would be very unusual for a cab with two speakons sockets to be wired series. And at the least you’d expect a sodding great warning to that effect on the cab itself.

 

If you’re new to speakons then buy good cables from the off. Don’t use jacks unless you have to - speakon throughout the chain is much better. Get cables with proper Neutrik speakon plugs - the cheap Chinese knock offs ain’t good. 1.5mm core cable will be plenty 

Edited September 7, 2021 by moley6knipe