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Old 3rd March 2013, 08:38 PM   #121
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Ok, I did not know Good , I d love to have 1000 threshold here !
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Old 3rd March 2013, 10:39 PM   #122
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Default Just did it...

I've just ordered the PCBs.
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Old 4th March 2013, 06:21 AM   #123
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Great news.
Guys, ordering from mouser involves custom clearance. Does delivery company charge extra for processing and handling?
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Old 4th March 2013, 07:58 AM   #124
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Quote:
Originally Posted by voxxonline View Post
Great news.
Guys, ordering from mouser involves custom clearance. Does delivery company charge extra for processing and handling?
No, all expenses are included.

After Mouser checked inventory it charges the total amount (and VAT), after that you shouldn't pay anything more.
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Old 4th March 2013, 09:04 AM   #125
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Good.
Off topic: if having multiple boards in enclosure(related to each other) and have different power ratings, is there a chance of using less transformers than individualy connected ? I mean one tranny for few boards ?
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Old 6th March 2013, 08:50 PM   #126
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Officially, the answer is you should have one tranny per board for the FE. Because of the double diode bridge, there is more risk of hum if you power two boards with one tranny.

Unofficially, I have tried powering two boards with one transformer. I measured no difference in hum (nearly unmeasurable in my boards) and couldn't hear any problems, but that is no guarantee for everyone. The official answer is probably the best one as each situation and build is different.

The final answer is the standard DIY answer. If you want to use an active crossover and independently amplify individual drivers, go ahead and try it with 2 boards on one transformer. Just be careful of your grounding design and be aware that you may have better results with individual transformers.

Jac
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Old 6th March 2013, 08:57 PM   #127
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My experience has been the same as Jac's, but I'm not quite sure what is meant by "...and have different power ratings...". Can you explain or go into more detail?
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Old 6th March 2013, 09:03 PM   #128
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Sorry for misleading question. I was generalising
I mean IF let's say I have pre board and want to add source selector and let's say remote and boards have different ratings is there only one option of multiple transformers ?
When I open commercial amp(or any electronic device), it has got single board running off single transformer. Board has multiple functions.
I can imagine it is actual limitation (and advantage altogether) of diy - to use step by step integration of boards but nevertheless adding more and more transformers ?
Again sorry for not clear question.
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Old 6th March 2013, 09:13 PM   #129
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It can get rather complicated. Here is a link to one solution. I suggest you read much of the entire thread to get an understanding of all the components and suggestions. It was a very useful learning process for me.

MyRef Integrated build.
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Old 6th March 2013, 09:33 PM   #130
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Thumbs up Bob.
What is your speaker efficiency (if it is not too intimate question ) ?
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