#1
Mkay, i'm a bit of a noob to tese things and im interested cause they may well be part of the half stack i plan to buy.

First off - Are they better than heads (asuming i don't care about a preamp)?
Second - What makes a behringer 1500 Watt RMS Power amp cost less than other 400W power amps?, Do power amps change the actual sound?
Third - can you change the amount of Watts there prduceing (If i had a 250 watt cab and the power amp was giving 300 could i change it)?

Any help would be Great, Cheers.

Ste
Never plan anything - it's much more fun to go and do something else. The most surprising thing about planning is the faliure that seems to always succeed it.

Sir John Harvey (Changed a bit - couldnt remember the original.. Meh, this one's tonnes better :P)
#2
1. An amp head is made of two parts, the preamp and the power amp.


You need a preamp because that is where the EQ and sound shaping goes on.

A power amp is what uses the watts to amplify the sound.

So if you don't care about the preamp too bad because you need it.
#3
Power amps supply power, not affecting tone unless it's a tube amp. Behringer is a cheap brand in my eyes, which explains the price differences. I think the head option allows for preamp tone adjustment and since that's not a concern........ Finally the cab wattage being lower than your amp can still work if the amp is not driven 100%. 300w amp will produce that wattage turned up to 10. I'm a guitarist, but the principles are the same I think.
#4
are you using pedals/rackmount effects? if not, then get a head!
.My Rig.

Ibanez GAX75
Laney LV300T
Behringer UD100 ULTRA DISTORTION [lol]
Dano Octave Metal
Dunlop Crybaby
#5
I'm using a Bass Pod Processor that works best wthout another preamp, thats why i dont care if my power amp has a preamp.

So to make sure i've got it all right.

A behringer1500 will sound the same as a better brand 1500 but the behringer would be more likly to screw up or something. A pure power amp is no better or worse than the one in a head and so long as the volumes at a resonable level i wont blow the speakers with to much wattage.

Is that about right?
Never plan anything - it's much more fun to go and do something else. The most surprising thing about planning is the faliure that seems to always succeed it.

Sir John Harvey (Changed a bit - couldnt remember the original.. Meh, this one's tonnes better :P)
#6
To be honest, what you shoudl do is jsut get a small booster pedal and ue that as a pre-amp to get the sound to line level (the best volume to take full advantage of the power amp) Preferably with an XLR output (looks like it is for a microphone cable)

Also, your cabnets shoudl be atleast twice the recommended wattage than your PA. Because you will blow them if they ain't.

Here is a tutorial I wrote about the subject:
http://tuned.afz.biz/index.php?showtopic=105
#7
Cheers for your help, but does that mean that if a had a 250 watt cab i could only use a power amp rated at around 150 watts or left?

Thanks for all the help.
Never plan anything - it's much more fun to go and do something else. The most surprising thing about planning is the faliure that seems to always succeed it.

Sir John Harvey (Changed a bit - couldnt remember the original.. Meh, this one's tonnes better :P)