#1
I recently purchased a Randall Half-Stack consisting of a RX120D head (120 watts, 4 ohms) and a RX412 cab (200 watts, 8 ohms). The cab is fine but the head isn't that impressive, and i was thinking about switching to an Ibanez TBX150H head (150 watts, 4 ohms). I have done some research on impedance and mixing and matching amp heads and cabs, but just want to double check that i am correct:
Is it ok to mix the Ibanez head with the Randall cab? The Randall and Ibanez both are at 4 ohms, so they should be interchangeable, but with the 150 watt Ibanez compared to the 120 watt Randall cause any problems? Any help will be greatly appreciated
#2
yup yup
youll have half the out put how ever seing as how the head is half of the cabs impedance
#3
It'll work fine, but as the previous poster said, the output of the head will be cut in half.

The only problem is that the TBX head sounds like shit.
#4
I dont think watts will really do anything to it. Watts is just a measure of electricty running the equipment, so the head just uses more power. Im pretty dang sure it wont have any effect. I ran my 10 watt practice amp through my laney cabinet which i have no idea how many watts it is *was given to me from an elderly friend* and i had no problems what so ever
#5
cab's watts should be higher than head 's watts, or else the head will put too much power into the speakers and blow them.

So small head + big cab is fine, just not big head into small cab.

Ohms are the major issue, and i'm not very sure about them.

EDIT: i didnt read that you've been doing 4 ohms into an 8 ohms already. if that worked before, it should still be fine.
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Last edited by Ackj at Nov 11, 2008,
#6
Why in gods name would you by a 150 watt practice amp? Seriously, the TBX is utter garbage.

Also, a 4 ohm SS head into an 8ohm cab will be fine.
I don't give a shit if you listen to me or not
#7
impedance mismatching doesn't matter with solid state heads as long as you don't go below the minimum impedance (usually 4 ohms)
#8
thanks a lot guys! so it WILL work, but from the sounds of it my money would be better spent elsewhere? keeping in mind that i only have about a 300 dollar budget, does anyone have any suggestions? Just in case it makes a difference i mostly play heavier music, but also a lot of cleaner stuff too, so i would like to have a very versatile amp that can handle extremely heavy distortion but at the same time sound good clean.