RMosack wrote:
I have no idea, but I wonder if the normal transformers for an 18 watter would be able to keep up with those low notes. Takes a lot of juice to get those speaker cones moving for those low bass strings.
Actually the 18W transformers should be able to handle bass pretty well. They were originally designed for hi-fi amps. A few different people have played bass at low volume levels through 18W amps, and have reported that the sound was pretty good. The main problem is that the Marshall 18W distorts very early, so you can't turn it up much at all. But you should be fine for bedroom level playing.
ivarr wrote:
Kind of hard to explain what i'm thinking (since it's just a very early idea), i was thinking 2 channels: 1:orignal 18watt and channel 2 bass amp marshall lem1992 style.
The Trinity sIII version of the 18W is probably the best suited for playing bass through, as it has the most clean range. You would probably only need to change some the component values in the tone stack to be similar to Lemmi's amp. It already has an 18W Normal channel.
It's also been known for people to build the same design with bigger transformers and power tubes (such as 6L6s or EL34s) to use as bass amps. Also SS rectification and big filter caps. This apparently works real well.
Stoo wrote:
I'd think you'd have to change the coupling caps to 0.1s ect.
There's a pretty strong chance actually, that would make the amp fart out on low notes. For a serious bass amp you would keep the coupling cap values fairly low, but up the filter caps and uses SS rectification.