Originally Posted by ARGLEBARGLE
Am looking into buying an amp for the upright. Currently borrowing my school's which is a GK 400 RB (200w) going into an unknown cab. Sounds like crap, very electric/metallic/stringy sound(I have an underwood pickup, could this be part of the problem?) . But the thing is loud enough to play in the big band.
The GK 400 RB - which I used to own for slab gigs - sounds god-awful for DB. I can't say why, but it does, and for exactly the reasons you mentioned. IMO, of course.
The amp I am currently looking at is the AI contra. This is supposed to be 200w as well (is that correct? 200w by itself but can get up to 300 with an ext cab?). But all the threads I have read on here suggest the contra doesnt do well in loud situations. |
So are these 200W the same?
There are a lot of variables when dealing with power ratings, and I honestly think it's best not to get caught up in the numbers game. The bottom line is, how do you like the sound?
That said, some of the variables:
Speaker efficiency: an efficient speaker can make a 100w amp seem "louder" than an inefficient speaker hooked up to a 400 w amp.
Coloration: Some amps get nastier the harder you push 'em. Some amps stay pretty clean up to their threshold. You have to play them to find out, and you have to determine if it is the amp or the speaker (or both) which is geting ugly when the volume creeps up.
Power ratings: I can't explain this as well as some of the techies up in the BG AMPS forum, but 200w is not twice as powerful as 100w in terms of how we percieve volume. Check up in BG for the actual figure, but I think you need something on the order of a 10 to 1 ratio to double the perception of volume.
Again, the best thing to do is to get your mitts on the amps you are considering and lets your ears decide. As expensive as some of these things are, it's worth the trouble. YMMV, of course.