IRFP450 for Mini-AX Amp

[vdi_nenna]

I have a dozen or more matched IRFP450 International Rectifiers mosfets. I wanted to use them in an all mosfets mini-ax design (Grey Rollins), using only 4 per channel.

Input capacitance is 2600pF and output capacitance is 720pF.
Pd is 190w
Id is 14A max.
Rds is .4 ohm
Vdss is 500v

It's not exactly a IRFP044. Will this work? Will there be a performance hit?

I've heard an X600 before, but never an AX of any kind...it's a funny way to go about it, but there you go. 🙂

Thanks,

Vince

 

[Zen Mod]

just go for it

maybe liiiiitle darker in comparison to IRFP044/IRFP240 and liiitle looser bass

depending of spks , you'll notice it ..... or not

 

[vdi_nenna]

Interesting. Will give it a try.

Thanks.

 

[vdi_nenna]

Was thinking last night. Alephs always had a "loose" bass, maybe with the exception of the Aleph 2 and above power. Then again, this is a AX. With the parts on hand, this will be a 20w version. I'm just thinking out loud...🙂