Cut down Aleph 5 or Mini Aleph?

george a · 26th April 2005, 02:46 PM

Hi All

Now that I have my A5 up and running , I need a smaller version for the tweeter in a bi-amping setup.

My question is this , if I build another A5 and use only one pair of output mosfets for each channel (instead of 3 pairs per channel) - will this still give me a version of the A5 albeit with lower power output???
If I can do this I can possibly piggy back the tweeter amp onto the (large) power supply currently being used for the A5.

Or am I better of building a Mini Aleph??

The A5 currently uses a 2.5kVA (25-0-25) trafo with 320KuF , I have have a spare trafo same size and about 80KuF of spare Caps lying around.

Thanks in advance
Cheers

Nelson Pass · 26th April 2005, 05:58 PM

With that supply and a smaller bias, I could see you getting
15 watts with a single set of devices.

george a · 26th April 2005, 09:40 PM

Probably just about perfect for what I need,

Many thanks Nelson!

jleaman · 26th April 2005, 10:05 PM

I'm Building 6 mini aleph's for this exact reason. I was told a 600va tranny for 3 channels is over kill what do you guy's think. ?

26th April 2005, 02:46 PM	#1
george a diyAudio Member Join Date: May 2002 Location: oz	Cut down Aleph 5 or Mini Aleph? Hi All Now that I have my A5 up and running , I need a smaller version for the tweeter in a bi-amping setup. My question is this , if I build another A5 and use only one pair of output mosfets for each channel (instead of 3 pairs per channel) - will this still give me a version of the A5 albeit with lower power output??? If I can do this I can possibly piggy back the tweeter amp onto the (large) power supply currently being used for the A5. Or am I better of building a Mini Aleph?? The A5 currently uses a 2.5kVA (25-0-25) trafo with 320KuF , I have have a spare trafo same size and about 80KuF of spare Caps lying around. Thanks in advance Cheers __________________ george a

26th April 2005, 09:40 PM	#3
george a diyAudio Member Join Date: May 2002 Location: oz	Probably just about perfect for what I need, Many thanks Nelson! __________________ george a

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26th April 2005, 05:58 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	With that supply and a smaller bias, I could see you getting 15 watts with a single set of devices.

26th April 2005, 10:05 PM	#4
jleaman Banned Join Date: Apr 2002	I'm Building 6 mini aleph's for this exact reason. I was told a 600va tranny for 3 channels is over kill what do you guy's think. ?

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