I have heard the same.
Think I will try the latest version. Has lower voltage drop. They are a little more, but not much.
The project has progressed a lot in this area. From general purpose SIP package bridge rectifier to dual bridges made with discrete SOTA.
These ones:
But, as you can imagine, I have yet to try them...
Others did and reported improved perceived sound quality.
Think I will try the latest version. Has lower voltage drop. They are a little more, but not much.
The project has progressed a lot in this area. From general purpose SIP package bridge rectifier to dual bridges made with discrete SOTA.
Nice, looks like that rearrangement will provide plenty of room for either orientation of a TO247 on R3.
The layout looks great, and another Mundorf component has been added.
What kind of heat sink do you want to use for the TO-247 case, and will there be a new material list?
What kind of heat sink do you want to use for the TO-247 case, and will there be a new material list?
Interest for Isabellenhuette resistors
The only TO-247 resistor available from Mouser is Caddock MP-9100 at around 12€ each, I will not include it in Mouser BOM they will need to be purchased separately.
Intended TO-247 resistors are manganin type like Isabellenhuette PBH, Powertron FPR2 and Mundorf MREU30.
In Europe Isabellenhuette are available from Buerklin, Reichelt, Distrelec and Mundorfs from hificollective and a number of other online shops.
In North America only Mundorf MREU30 seems available from PartsConnexion.
I can eventually include Isabellenhuette resistors for around 14€ per pair (additional shipping cost included, price calculated for a single pair, price will be lower for more participants, for instance 10 participants will lead to 10€/pair).
If interested please update the GB spreadsheet.
The only TO-247 resistor available from Mouser is Caddock MP-9100 at around 12€ each, I will not include it in Mouser BOM they will need to be purchased separately.
Intended TO-247 resistors are manganin type like Isabellenhuette PBH, Powertron FPR2 and Mundorf MREU30.
In Europe Isabellenhuette are available from Buerklin, Reichelt, Distrelec and Mundorfs from hificollective and a number of other online shops.
In North America only Mundorf MREU30 seems available from PartsConnexion.
I can eventually include Isabellenhuette resistors for around 14€ per pair (additional shipping cost included, price calculated for a single pair, price will be lower for more participants, for instance 10 participants will lead to 10€/pair).
If interested please update the GB spreadsheet.
At $22 each for the Mundorf's from PartsConnexion it'd be far less costly to buy them at a higher volume for the Isabellenhuette resistors if you can get them that cheap over there. I'd be in for 8 (4 pair) of them for sure.
Back then I bought the Mundorf MLytic for the My_Ref C (€ 20 each) and recently soldered it down again because I want to use it with the My_Ref Fremen.
That is why I have already chosen the Mundorf MREU30.
As you already wrote Dario, it is easier for me to buy Isabellenhuette or Mundorf components here (only the wallet will not be easy). ^^
I will buy the Mundorf MREU30 for the Fremen.
That is why I have already chosen the Mundorf MREU30.
As you already wrote Dario, it is easier for me to buy Isabellenhuette or Mundorf components here (only the wallet will not be easy). ^^
I will buy the Mundorf MREU30 for the Fremen.
I see one R3 per board, so for a dual mono set up, two boards, I would need one pair of the Isabellenhuette resistors. Correct?
Price fixing
OK, we're at 30 kits so PCBs will be made in Italy at 25€/stereo kit.
The Isabellenhuettest can be confirmed at about 10-11€/stereo kit.
Later today and tomorrow I'll start sending payment requests.
OK, we're at 30 kits so PCBs will be made in Italy at 25€/stereo kit.
The Isabellenhuettest can be confirmed at about 10-11€/stereo kit.
Later today and tomorrow I'll start sending payment requests.
Is the BOM at the beginning of this thread still good?
I am not in a hurry, I just don't want to start sourcing parts until the BOM is good.
I am not in a hurry, I just don't want to start sourcing parts until the BOM is good.
No, please don't buy parts until I officially release the updated BOM, it will probably take a couple of weeks.