[david62]

Will a 5R4GY rectifier work in the Clarinet?

[galyons]

Yes, same pins, same heater current, similar voltage drop...the big differences are  the max current, max AC voltage per plate and PIV.  Generally the 5Y3GT is a preamp/ small amp rectifier. The 5R4GY for current hungry amps.

What are you looking to accomplish? 

Cheers,
Geary

[david62]

I have a old Coke bottle 5R4GY and I thought that I would try it mainly because it looks cool.I'm not sure that it would have a sonic impact.

[hagtech]

You can use either tube.  A real 5Y3 is directly heated, and will power up much quicker.  The 5AR4 (GZ34) types have a built in delay mechanism being indirectly heated.  It is difficult to predict the sonic impacts, but changes will definitely be heard. 

jh

[david62]

I tried the 5R4 in the Clarinet.I would say that it sounded more lively,somewhat less laid back with good solid bass.I had been using a old RCA Coke bottle 5Y3,but I think I will leave the 5R4 in for now.
Dave