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Old 27th January 2013, 03:01 PM   #41
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It should be fine but you don't want to destroy a pair of nice speakers.

You can use anything, cheapo transistor radio speakers (at low volume) just to verify that it's working.
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Old 27th January 2013, 03:45 PM   #42
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not good.... only one side gives cracling sound and way too loud....
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Old 27th January 2013, 03:53 PM   #43
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Not good....

If you say "Way too loud" that would point me towards a faulty volume control pot.

You could swap the amplifier boards from L-R just to prove a point. If the problem stays with the same channel then the amp boards are OK.
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Old 27th January 2013, 03:59 PM   #44
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can not be... I use a different amp as preamp....
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Old 27th January 2013, 04:01 PM   #45
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Do you know the Hiraga 30Watt amp design?
Attached Files
File Type: pdf HIRAGA SUPER 30W SCH.pdf (16.0 KB, 18 views)
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Old 27th January 2013, 04:03 PM   #46
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Try swapping the input leads.

You need to ascertain where the problem lies.
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Old 27th January 2013, 04:08 PM   #47
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I'll try tomorrow.... It's dinner time and it's been enough for one day :-)

Thank you so far! I hope you can help me later on?

Kind regards,
Sjoerd Smits
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Old 27th January 2013, 10:16 PM   #48
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SjoerdSmits go back and read post number 2 and you will now understand why I asked the question

Tony.

Quote:
Originally Posted by KatieandDad View Post
All the resistor across X3 and X4 is doing is acting as part of a CRC filter to reduce ripple slightly.

For testing you can just add a shorting link in place of X3 and another in place of X4.

Once you are happy it is working you can consider what value of resistor you would like to try in those positions.

The current I am referring to is the DC current drawn by the amplifiers from the secondary side of the supply.
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Old 28th January 2013, 03:01 PM   #49
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Hi Wintermute,

Yep, get it now! Learning all the time!

Didn't know what you were trying to say with C or CRC.... :-)
Thanks!
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Old 28th January 2013, 03:34 PM   #50
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Now you need to find out if the problem is internal to your new build or not - hence swapping over the interconnects.
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