Carvin R600 Protect mode?

What is the impedance of each cab ?

The Carvin cannot be bridged into a load less than 4 ohms.

 

Fan comes on?

 

I used to use an RL1000. They tell you different on the Carvin forum, but I don't think these amps like being bridged at all. Mine always ran very hot in bridge mode.

In light of the cab mismatch, I suggest you run it the way it was intended to be run. Bi-amped. That way you can control how much power you are feeding the 115.

 

In bi amp, where is your amp 1 and 2 levels set, also, if your bass heavy on your eq the r600 may go into protect mode. Atleast mine would.

 

You can get the same tone running it full range. The only thing bridging is doing is upping the power.

My advice is to at least get matching cabs or just do the inevitable and get an Ampeg 810. As far as the head is concerned, I think the RL heads were the best ones Carvin made. I still have my RL1000, it is my backup rig, although the preamp section is blown. I only noticed it was blown by accident as I always used an RBI. The problem is that Carvin will not service these heads and paying a tech to fix them will cost more than the head is worth. You can still find them pretty easily on the used market, but if I were you I wouldn't bother. There are so many amps out there that are so much better.

 

Also, if I remember correctly, Carvin specs say you can run that head @ 2 ohms.

 

These knobs do nothing in bridge mode.

 

I know

 

Then run the amp in dual mono mode (bi-amp/crossover disabled).

At least that way you can balance the power your running into the mismatched cabs.

 

^^^ this ^^^

and remove the fan cover, vacuum out the heatsink.

 

Thats why I asked, I had a hard time getting a good 'live' tone in biamp. So I started running full range bridge mode, was using the carvin 2x10 andand 1x18 cabs. Had to cut back on the low freqs to keep the amp from going into protect mode even though the cabs
didnt go below the min load rating. Still couldnt get a great tone, but it was better.

 

You can go full range without bridging.

 

Insignificant if you cant get a good tone biamped. My issue was the cabs, not the ohms rating, but very weak cabs causing me to eq in lower freqs which lead to the amp going into protect mode to get decent tone, then when eq'ing out the lower freqs it just wasnt sounding good at all.

I eventually purchased one Avatar 4x10 and never had another problem or needed a second cab.

 

This don't surprise me at all.

 

I've been using "stereo" amps since the Seventies. I've never felt the need to bridge any of them. I run in parallel with one cabinet on each channel.

Possibly your problems with the sound is the terrible mix of a 1x15 and a 4x10. The 1x15 simply cannot keep up with a much more efficient 4x10 in any regard.