Gallien Krueger BP-250/ Accustic B810 impedence mismatch

hgsail · #1 02-23-2013, 05:21 PM

My son just bought an Accustic B810 (4ohms) cabinet to go with his GK BP250 (8ohms). After he got home he realized that they were not the same impedence. Is there a way to change the GK head to 4ohms?

B-string · #2 02-23-2013, 05:22 PM

In short no.

hgsail · #3 02-23-2013, 06:33 PM

No way to change out the final output resisters?

B-string · #4 02-23-2013, 07:07 PM

Sorry SS amps are not designed that way. The minimum load spec'ed is the load the output is designed to handle. If you try to run a heavier load (4 ohm on an 8 ohm circuit) the output devices will overheat and or power supply will fail. SS designs are directly coupled to the speaker load.

hgsail · #5 02-24-2013, 08:04 AM

Thanks!
I guess he'll have to get another amp or cab

B-string · #6 02-24-2013, 09:43 AM

The G.C. Acoustic is not really a very good 810 to start with. He probably got a very good deal on it (for good reasons). The G-K is good pro stuff but pretty old and limited in it's use by today's standards.
If he really wants to keep the cab you can find good deals an G-K Backline 600's used if you like G-K (I do), otherwise deals are out there all the time on the house brand Acoustic like the B200, B600?