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Old 21st May 2009, 03:42 PM   #131
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Quote:
Originally posted by ccschua
Saw your photo R5 to R8 using 50R but the BOM on may 24 is using 100R.
I use a single 50R/5W. The BOM suggests 2 x 100R/3W in parallel, which is basically the same.




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Old 21st May 2009, 10:16 PM   #132
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Dear Peter i have to agree with speakrsfun, for us shall we say less use to electronics,the power supply boards does make it quicker and easier without having to think about orientating the diodes correctly and get the negative and positive voltage outputs correct as well. Not difficult I agree, but each time i come to do it i have to keep reconfiguring the orientation of the diodes. Remember some of us may do something like this only a couple of times each year, it does not come naturally. It is also neater, smarter looking and hence psychologically more satisfying as well.
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Old 22nd May 2009, 05:45 PM   #133
ccschua is offline ccschua  Malaysia
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Hi Peter,

1. Can I use 0.5W instead of 0.6W?
2. Power supply R1 to R8, instead of 0.47R, if use 0.1R total how many required ?
3. How about R11, R12 can use 0.1R ?

Your urgent reply is appreciated.
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Old 22nd May 2009, 06:00 PM   #134
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Quote:
Originally posted by ccschua
1. Can I use 0.5W instead of 0.6W?
2. Power supply R1 to R8, instead of 0.47R, if use 0.1R total how many required ?
3. How about R11, R12 can use 0.1R ?
1. You can even use 0.25W resistors.
2. That's what I actually do, I use single 0.1R resistor with 10W power rating (or similar)
3. No you can't, those need to be exact values.
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Old 22nd May 2009, 06:06 PM   #135
ccschua is offline ccschua  Malaysia
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Quote:
Originally posted by Peter Daniel


1. You can even use 0.25W resistors.
2. That's what I actually do, I use single 0.1R resistor with 10W power rating (or similar)
1. will do.
2. Total 0.1R 10W is 2 units and these 2 units replace R1 to R8 right.

ps. can email me the nelson ps circuit diagram.

1. Do u think 2 units of Mundorf M-lytics 47,000uF works supreme for F5 or Jensen? or better 4 units of 47,000 (which means no regulator is required right)
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Old 22nd May 2009, 06:56 PM   #136
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No regulator is required no matter what caps you use.

Never tried Mundorf's so can comment on their performance.
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“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
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Old 22nd May 2009, 11:10 PM   #137
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Default To Peter Daniel Re: Pass Zen V9 boards

Hi,
I am new to this forum and am not allowed to e-mail yet. I built several Pass Zen's when they first came out 12 years ago to power K-horns. They were lost in a fire and I would like to build them again, with updates of course.

How do I go about joining the 'group buy' process to obtain 3 PC Boards?

Thanks in advance!
Andy Grubbs
Chapel Hill, NC
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Old 23rd May 2009, 12:14 AM   #138
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Just follow the instructions in a first post: F5 pcb group buy...
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“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
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Old 25th May 2009, 03:42 PM   #139
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Default Re: To Peter Daniel Re: Pass Zen V9 boards

Quote:
Originally posted by wagrubbs
Re: To Peter Daniel Re: Pass Zen V9 boards
Zv9/ F3 boards are currently out of stock. There was a recent wiki page to check the interest, but only few entries came up. I might run another batch somtime in a future, but it won't happen soon. You may post wanted ad in Trading Post section, as I'm pretty sure not everybody who purchased the boards went into building the amps.
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“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
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Old 26th May 2009, 07:48 PM   #140
Beftus is offline Beftus  Netherlands
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Got my boards today. I didn't expect the boards to be so small. I initially thought I had received a single amplifier channel...
The boards are great, thanks Peter. BTW, not bad, from Canada to the Netherlands in only 7 days!
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