F5 in balanced mode?

[Leify]

Hi all,
Im building right now two stereo F5 power amps. I was thinking to try to bridge them as mono blocks (balanced mode), to get more power. Is there any issues I should think about either than the heat dispersion?

Im thankful for all tips and advise.

Thanks!

 

[Zen Mod]

usual things - do not use them lower than 8 ohms , nominally

nothing else

 

[Leify]

Thanks for you answer. However shouldnt it be possible to use them down to 4 Ohms, since the original F5 is stable to 2 Ohms?

 

[AudioSan]

i would not try to run it full out in class A even at 8ohm. unless your not using multiple outputs. 2.5A*23V=57.5W dissipation. so 2 pair of outputs pr half of the amp.
then you have a 100W class A monoblock.
so, why not just build F5turbo v3? what are Your goal with this amps?

 

[Leify]

Im building two stereo amps for me and a friend so I will have two amps on my hand for a while. I just want to try if it works if I want/need to have more power. The loudspeakers I have now is about 91 dB sensitivity and 6 Ohms (4 ohms min). Im not sure I will be enough with the stereo amp.

 

[AudioSan]

i run my F5 on 6ohm 90db speakers. but i have 1.7A bias insted of 1.3A. i also have 2 output pairs. rail voltage is +/-23V as original that gives me 35W class A at 6ohm.

 

[Leify]

Thanks for your input. I will see when the amps are ready if its enough.

Thanks!