There was instability noted with Salas regs in some cases, based on dates this was an earlier version.
Any experience with the latest v1.3 Ultrabib?
I noticed the v1.3 pdf mentions adjusting some resistor values for stability with >300mA output
Any experience with the latest v1.3 Ultrabib?
I noticed the v1.3 pdf mentions adjusting some resistor values for stability with >300mA output
Last edited:
The older versions do have a lot of circuit differences, it would be surprising if the new ones had the same issue.
I takes me forever to finish this project. Especially now when it makes gorgeous music.
I still need to add the delay circuit and cut out ventilation holes in the top of the chassis.
But it is getting more and more difficult to decide whether to make improvements or just listen.
I still need to add the delay circuit and cut out ventilation holes in the top of the chassis.
But it is getting more and more difficult to decide whether to make improvements or just listen.
Attachments
If Twitchie and Lasercut still want to subscribe for 2 PCBs each (or more),
we'll make a one-time exception and make another run of boards.
Most probably also with discrete (series) regulators, SHPP and crossfeed as options.
Patrick
we'll make a one-time exception and make another run of boards.
Most probably also with discrete (series) regulators, SHPP and crossfeed as options.
Patrick
Will do once I tidy it up inside and properly finish the chassis...
But it is operational now.
Finally a clear winner here (vs Pellerano ZEN and Whammy with Burson V6 Classic)
OK, we'll get 5 new sets made, at our own risk.
Shall inform you when ready.
One set will consists of :
2x UTHAiM Amp
2x SDR Regulator +ve
2x SDR Regulator -ve
1x Danyuk/Linkwitz Crossfeed Buffer
1x SHPP Protection
1x Aux PSU (78Lxx, 79Lxx)
So 3 sets still to be had, whoever might be interested.
Patrick
Shall inform you when ready.
One set will consists of :
2x UTHAiM Amp
2x SDR Regulator +ve
2x SDR Regulator -ve
1x Danyuk/Linkwitz Crossfeed Buffer
1x SHPP Protection
1x Aux PSU (78Lxx, 79Lxx)
So 3 sets still to be had, whoever might be interested.
Patrick
This is not XELF.
I thought you also wanted the UTHAiM because of your previous posts here #141.
Patrick
So
2x Twitchie
1x ernesternest
1x danny_66
1 left.
Or we need to go to 10 sets.
Cheers,
Patrick
2x Twitchie
1x ernesternest
1x danny_66
1 left.
Or we need to go to 10 sets.
Cheers,
Patrick
3 years ago on a similar GB, we charged 450HKD a set :
Interest for 3rd GB for Pioneer Super Linear Headphone Amplifier
The team in HK has stopped all DIY hobby since Corona (to protect the people we hired to do the work).
So this has to be handled by someone in the EU now. And he has to pay VAT.
The boards does not cost much, the work costs more.
Ordering, sorting, packing, preparing documents, collecting money, posting ......
And the "profit" goes to help finance all the other on-going developments.
For example, a small portable we are working on has already gone through 6 versions of PCB.
Things that you do not get to see here.
So I think 50€ plus postage from the EU would be fair.
And you need to transfer PP in Euro to friends, or else we need to add 5% PP charge.
Patrick
Interest for 3rd GB for Pioneer Super Linear Headphone Amplifier
The team in HK has stopped all DIY hobby since Corona (to protect the people we hired to do the work).
So this has to be handled by someone in the EU now. And he has to pay VAT.
The boards does not cost much, the work costs more.
Ordering, sorting, packing, preparing documents, collecting money, posting ......
And the "profit" goes to help finance all the other on-going developments.
For example, a small portable we are working on has already gone through 6 versions of PCB.
Things that you do not get to see here.
So I think 50€ plus postage from the EU would be fair.
And you need to transfer PP in Euro to friends, or else we need to add 5% PP charge.
Patrick
That is fair enough.
I just wanted to get the idea.
I am tempted but maybe I should concentrate my effort on Superlinear HPA. That build got stalled by the pandemic when my parts arrived to my office while I was already working from home.
I just wanted to get the idea.
I am tempted but maybe I should concentrate my effort on Superlinear HPA. That build got stalled by the pandemic when my parts arrived to my office while I was already working from home.
Yes,the SL will be a very good reference to go against.
The other boards we shall have more to spare.
So you can still get them from us later.
Patrick
The other boards we shall have more to spare.
So you can still get them from us later.
Patrick