So.... after years of searching I found Bugera BVV3000 infinum all valve 300w bass amp. Came with large 1x15 and 1x12 cab.
I've had valve amps before - Laney Nexus tube and Ashdown CTM300 - sold them because of impracticality and they were quite valuable.
Anywho, this Bugera was shown working perfect on pick up, and worked perfectly here at home for a few days. Glorious SVT sound. A better sound in my opinion than the other 2 all valve amps - VERY svt.
So, I thought I'd try it with my 4ohm barefaced cab. The previous cab only used jacks, so I used the Speakon on this. There was an instant white noise like a detuner radio. It did settle, but was very valve break up like at low volume.
I then tried a Speakon to jack lead and no change.
I've now brought in the original cab and theres no sound and all the lights on the rear are lit.
What a pfaff. Really dont need this.
So, unless anyone knows a quick fix itll be up for sale. The previous owner also gave me x4 6650 sovtek valves as spares.
It was always connected to a load, and always switched on and off correctly.
Gutted, because it sounded awesome.