Pass f6 toroidal transformer

[Bardo Thodol]

Hi i want to build f6. Does Deluxe 5U chassis come with toroidal transformer?

 

[Brzzl]

Hi i want to build f6. Does Deluxe 5U chassis come with toroidal transformer?

No, it does not.

 

[TungstenAudio]

If you want to use the 5U chassis, then you will have plenty of room for two 300VA transformers. Get the ones with 18V secondary windings, and use one for each channel. You will also need two PSU boards and all the parts that go on those.

 

[vdi_nenna]

You could also build F6 in a 4U chassis and with the saved funds buy a transformer.

You would want something with similar specifications:

AN-5218 - 500VA 18V Transformer - AnTek Products Corp

 

[codyt]

400va could work, right? And 300va. Or is the F6 a special case?

 

[Dennis Hui]

I think I used an Antek AS-3218 in mine.

 

[angrypat]

I used a single 400va 18-0-18, the diyAudio store's psu boards, with 18,000uf caps (72,000uf per side), the amp seems stronger than my 100 watt rotel receiver. Very pleasantly surprised.

 

[angrypat]

Used 4u chassis from store, plenty of room and heat sink.

 

[vdi_nenna]

I like the assurance that the transformer isn't under any strain especially when using a single dual power supply.
I'm sure the math wizards will debunk me, but there you have it.
Over engineering when one doesn't have math skills like me.

 

[codyt]

I like the assurance that the transformer isn't under any strain especially when using a single dual power supply.
I'm sure the math wizards will debunk me, but there you have it.
Over engineering when one doesn't have math skills like me.

That’s my normal mode of operation

 

[ColinA123]

My F6 has a 400va transformer with the store powers supply boards built as standard.
Fitted in a 400u chassis. (Make sure that you get the 10mm front plate.)
Tranny is mounted vertically on an aluminium angle bracket.
Totally silent (mechanical noise and through amp.)

 

[Bardo Thodol]

I am layman & new to this diy audio world. Diy audio store's f6's parts come with two jensen transformers. Do i still need the toroidal transformer?

I am also planning to get 90db efficient tannoy xt6f towers for the f6. Have anyone used xt6f with f6?

 

[6L6]

The transformers supplied with the F6 board are for the audio signal.

The toroidal transformer is for the power supply, you need it.

The Tannoy should be a wonderful match with the F6!

 

[6L6]

400va could work, right? And 300va. Or is the F6 a special case?

All of the First Watt amps will work perfectly with a 300VA transformer. (Nelson uses 300VA, if it’s good enough for him... )

If buying from Antek I strongly recommend a shielded transformer, the AS- series. They are 400VA and smaller.

Over sizing the transformer doesn’t actually do much, but since people like overbuilding the PSU, what the heck, why not.

 

[ColinA123]

If you read the first few pages of the F6 build guide ( by 6L6) things should be clearer.
When ordering you need the Universal power supply board as well.
Build, F6 Illustrated Build Guide
Power supply Universal Power Supply – diyAudio Store

 

[Bardo Thodol]

Thanks a lot guys! Last 2 questions.

1. Is this kit 220v compatible?

2. How long this amp can play music without getting too hot?

 

[MEPER]

Yes. the Universal Power Supply PCB connects to the secondary of the transformer (low voltage).

Amp can be on "24/7" if you design it correct.

 

[Dennis Hui]

1) You need a transformer rated for 220V and giving the proper secondary voltage.
Fuse and inrush thermistor need to be appropriate for your voltage. With that, then
everything should be fine.
2) Indefinitely, if the amp is properly constructed with sufficient heatsinking.

 

[ColinA123]

Since you are a new builder let's re-state some of the guidelines.
Buy good components, from mainstream suppliers.
Buying components, especially the transistors from E-bay is likely to result in fake components and failure.
The J-fets (Q3-Q4) are very important, and difficult to find. The store has good quality equivalents in the right grade.
There is a mod to the zenner diodes that makes bias more stable. This is very much worth doing during the build.
See the mods on the circuit below.

 

[Bardo Thodol]

My F6 has a 400va transformer with the store powers supply boards built as standard.
Fitted in a 400u chassis. (Make sure that you get the 10mm front plate.)
Tranny is mounted vertically on an aluminium angle bracket.
Totally silent (mechanical noise and through amp.)

Store's Deluxe 4U comes with 10mm front plate! But do i need to order 21$ rear panel dissipante?