AGX 5A 250v fuses

[Gepetto]

Phase Linear Fuses
Thanks for your question.
The plus and minus 78V rail fuses are Buss AGX-5A 250V rated fuses. These are very fast acting fuses, do not use slow blow fuses here.
The AC main fuse is a Buss AGC-8A 250V rated fuse.

Both of these types are available from Mouser Electronics.
AGX-5A equates to Mouser part number 504-AGX-5 and they have plenty of stock.
AGC-8A equates to Mouser part number 504-BK/AGC-8-R and they have plenty of stock.

Hope this helps you out.

 

[Gepetto]

AGX are instrument fuses, meant for very fast reaction to protect the semiconductors that can fail fast. For the fact that the fuses are blowing and not your amp is a good thing. AGC are also fast blow but have a longer/higher amp^2-second rating than the AGX profile. Slow blow fuses should not be any part of your amp.

I would guess your CVs are 4 ohms, not 8. I have another guy with a stock PL and all he did was put in the bigger bulk caps blowing the 5A fuse on his 4 ohm CVs where it would not with the smaller, original bulk caps. The larger bulk caps have the ability to deliver much more current to the load during music peaks than the old, tired original 5900uF ones. The ESR is so high on these old caps it limits the amount of peak current the amp can supply to the load (the voltage on the cap collapses momentarily due to high ESR). There also seems to be something about CVs that brings this out, like a severe impedance dip which is not all that uncommon.

 

[Northwinds]

AGX are instrument fuses, meant for very fast reaction to protect the semiconductors that can fail fast. For the fact that the fuses are blowing and not your amp is a good thing. AGC are also fast blow but have a longer/higher amp^2-second rating than the AGX profile. Slow blow fuses should not be any part of your amp.

I would guess your CVs are 4 ohms, not 8. I have another guy with a stock PL and all he did was put in the bigger bulk caps blowing the 5A fuse on his 4 ohm CVs where it would not with the smaller, original bulk caps. The larger bulk caps have the ability to deliver much more current to the load during music peaks than the old, tired original 5900uF ones. The ESR is so high on these old caps it limits the amount of peak current the amp can supply to the load (the voltage on the cap collapses momentarily due to high ESR). There also seems to be something about CVs that brings this out, like a severe impedance dip which is not all that uncommon.

Sent you a PM Joe and my CV's are 8ohm

Specs CV E-712

Connectivity - Wired Amplification type - Passive
Driver configuration - 3-way
Input impedance - 8.0 Ohm
Sensitivity - 98.0 dB
Power output - 300.0 Watt
Color - Black

 

[laatsch55]

I had a set of D-9's. The 400 was a waste of time on em, putting a 700 on them however gave you a whole new beastie..