I've just bought a 1975 (I think!) master volume Fender Silverface Twin and have a dilemma I hope you may be able to help with.
The amp is in decent condition for it's age and all works but seems really underpowered at high volume.
I might be mistaken but assumed that a Twin with channel volume and master volume on 8/9 would be blisteringly loud but at a blues jam I took it to earlier in the week, it was out shouted by a 30 watt 1x12 Peavey valve amp...
I should also add that the amp has a pair of what look like disco / cheap DJ 12 inch speakers fitted (a brand I don't recognise but they definately aren't guitar amp speakers). They are both rated at 8ohms and appear to be correctly wired for 4ohms which I believe is correct.
I guess the low volume could be caused by one of, or a combination of the following:
1) My perception of how loud it should be being wrong
2) The speakers
3) Old valves that need replacing (would it be power valves or could faulty pre amp valves cause a drop in volume?)
4) Something 'internal' (transformer needing replacement or just needing a good service etc)
Does anyone have any thoughts / suggestions?