DIYA store "Wolverine" (Son of Badger) .... suggestions ??

20181212183721_Figure5-THATBalancedLineDandR.jpg
 
LKA has the grounding done correctly. Pin 1 goes to chassis along with the RF filter. The chassis loop breaker is providing the ground reference for the amplifier and converter, not pin 1. We did the same with our THAT 1206 converter. No need to worry how the source is connected when done this way normally. As an added twist some sources are now being wired incorrectly and the pin 1 to chassis connection at the amp is causing the source to hum.
 
I have a question about the EF3-4 board. I know you can use it with only 3 pair, but can the board be trimmed down to fit a 300mm deep chassis if run with only 3 pairs? I ask because I am on the fence about my chassis size and my goals for this build.
Is there a cutoff date for the first group buy? I put in for EF3-4, but may opt for the EF3-3 or a pair of each if the boards cannot be trimmed.
TIA
 

stuartmp

Member
Paid Member
2016-05-28 2:15 am
Gold Coast
I have a question about the EF3-4 board. I know you can use it with only 3 pair, but can the board be trimmed down to fit a 300mm deep chassis if run with only 3 pairs? I ask because I am on the fence about my chassis size and my goals for this build.
Is there a cutoff date for the first group buy? I put in for EF3-4, but may opt for the EF3-3 or a pair of each if the boards cannot be trimmed.
TIA
Unfortunately in your case the EF3-4 board can not be trimmed down to suit the EF3-3 footprint.

I will give everyone enough notice as the cut off date nears.

At this stage if everything goes as planned with Thimios's test of the EF3-4 I would say you still have approximately 3 weeks before the cut of date.

The first production batch of boards is now complete and is awaiting shipping to Thimios.
 
I was also interested in a 4-pair board but I was disappointed by its length. I think that in the board of 3 pairs, 4 pairs of transistors fit with a little work ...look the board of TITAN 2000 4 pairs and drivers ONLY 260mm.
 

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danieljw

Member
Paid Member
2005-01-19 8:24 am
South Australia
I was also interested in a 4-pair board but I was disappointed by its length. I think that in the board of 3 pairs, 4 pairs of transistors fit with a little work ...look the board of TITAN 2000 4 pairs and drivers ONLY 260mm.
Hi Nikos,

The Titan 2000 design uses a different shape of heatsink and was designed for use with forced cooling (fans)

The layout of the Wolverine EF3-4 is more suitable for passive cooling (no fans) and the distance between devices will actually help distribute the heat evenly across the heatsink.

Hope this helps

- Dan
 
Hi Nikos,

The Titan 2000 design uses a different shape of heatsink and was designed for use with forced cooling (fans)

The layout of the Wolverine EF3-4 is more suitable for passive cooling (no fans) and the distance between devices will actually help distribute the heat evenly across the heatsink.

Hope this helps

- Dan
Υes my friend of course and your explanation helps
I would just like a board with 4 pairs to be more compact only that.....
Some pcs 2005-2006 now this amp does not exist anymore....all by hands pcb....
Last pic from Elektor lab...
 

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danieljw

Member
Paid Member
2005-01-19 8:24 am
South Australia
Υes my friend of course and your explanation helps
I would just like a board with 4 pairs to be more compact only that.....
Some pcs 2005-2006 now this amp does not exist anymore....all by hands pcb....
Last pic from Elektor lab...
Yes I remember reading the magazine at the time.
Quite good performance at relatively high power.
 
Τhank you for caring about my health, your kindness .... unless you imply something else but I find it difficult to understand because English is not my mother spoken language..

"Don't hold your breathe" is an English expression that insinuates what you are waiting for may never come; or that your wait for it will be very long.

I can't think of a Greek equivalent (my Dad is a Greek, born and raised) though I'm sure there are plenty : )