GK 800RB Speaker outs question

[LeftyLB70P]

Just bought a used head and I am kind of confused about the speaker out options. The upper 2 are 100W into 8Ohms and the lower 2 are 300 into 4Ohms. I have multiple cabinets and actually use a dual amp setup (GK 1001RBII into a 4x10w/horn and this into a 2x10w/horn). I just got the amp last night and ran it from 1 of the lower speaker outs (the 2x10 is 4ohms). It sounded great and I am happy but I am curious and want to know "all the options".


Those with experience with this head please give input.

thanks

[dhsierra1]

http://www.gallien-krueger.com/manuals/800rb.pdf

here's a start. Great amp.

You can run the 100 watt section as full range, not just in biamp mode. So for example you could run an 8 ohm 2-10 cab from that and run a 4 ohm 4-10 cab with the 300 watt section for a total of 400 watts into 6-10s.

[will33]

Originally Posted by dhsierra1

http://www.gallien-krueger.com/manuals/800rb.pdf

here's a start. Great amp.

You can run the 100 watt section as full range, not just in biamp mode. So for example you could run an 8 ohm 2-10 cab from that and run a 4 ohm 4-10 cab with the 300 watt section for a total of 400 watts into 6-10s.

+1

OP, remember the high amp is 8ohm minimum, don't forget that.

The 800rb is better suited to real biamping than the rest of the GK line with the 50watt tweeter amps. The crossover tops out at 1khz which is too low for any tweeter and 100watt high amp could easily toast most any tweeter anyway.

[will33]

Both amps work when set to full range. You can add more cabs to the high amp if you want by making up a series cable for it. It's 60 watts @ 16 ohms.

Don't be discouraged by the low power numbers. Due to some filtering of sub-lows and a high current reserve, they play incredibly strong for 200-400 watts.

[LeftyLB70P]

perfect - that's exactly what I was looking for. I had already found the manual but there is a line that states "never to connect the 2 Outputs together" (not word for word) that led to my confusion. Not worried at all by the numbers either - this thing is a beast! Lower volume would have been fine but I was stunned at just how powerful it is.

to...much...power....
thanks for the input.

[will33]

Originally Posted by LeftyLB70P

perfect - that's exactly what I was looking for. I had already found the manual but there is a line that states "never to connect the 2 Outputs together" (not word for word) that led to my confusion. Not worried at all by the numbers either - this thing is a beast! Lower volume would have been fine but I was stunned at just how powerful it is.

to...much...power....
thanks for the input.

Yes, make sure the speaker outs aren't crossing paths in anyway, like having cabs daisy-chained and connected to both amps or something. You can run the two amp outs to two separate cabs, or as many as impedance will allow.

Enjoy, I love mine. I run it with a pair of 12's on the low amp and a spearate 6 on the high amp with the crossover around 800-1k. Sounds great and plenty strong.