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Old 23rd September 2010, 06:51 PM   #1
valo is offline valo  Norway
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Default what to do whit this ??

Greetings I did som Metalwork today.. So what amp to put in the the box ?

My rails will be +/- 30Vdc and i will be using 12x36000Uf caps

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Old 23rd September 2010, 07:42 PM   #2
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Is each heatsink one solid piece? Did you assemble this box?
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Old 23rd September 2010, 07:56 PM   #3
valo is offline valo  Norway
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I did assable the box today, the heatsink is not a slngle pice but 4.. Im gona use a copper plate to join them togetter.. gonna finish the box tomorrow
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Old 25th September 2010, 10:05 PM   #4
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What kind of amp did you want?

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Old 26th September 2010, 10:51 AM   #5
valo is offline valo  Norway
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Quote:
Originally Posted by Nelson Pass View Post
What kind of amp did you want?

Greetings Nelson

Yes thats the question, Have been looking at the Aleph 5 amp .. I want something that can drive my 4ohm speakers (Audio Physic Sitara) and Im sure Aleph 5 will do the job exelent
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Old 27th September 2010, 07:54 PM   #6
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I don't ordinarily recommend Alephs for 4 ohms unless
they are biased extra high. Not enough control for many
of the 4 ohm loads, and usually more distortion than I
want.

As a rule I like to use push-pull followers for 4 ohms -
Class A of course.

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Old 27th September 2010, 09:21 PM   #7
valo is offline valo  Norway
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finished the Aleph PCB's ten minutes ago If im not happy whit the result i will start all over again with a Class A push-pull amp
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Old 29th September 2010, 06:36 PM   #8
valo is offline valo  Norway
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Class A is fun and HOT!! , did power up the Aleph 5 boards today bouth channels is ok but I did measure DC offset channel1, gives me about 20mV and channel2 is about 50mV, Im verry habby about 20mV but is 50mV ok ?
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Old 29th September 2010, 06:45 PM   #9
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everything under 100mV is considered OK

in any case - less is more
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Old 29th September 2010, 07:02 PM   #10
valo is offline valo  Norway
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Quote:
Originally Posted by Zen Mod View Post
everything under 100mV is considered OK

in any case - less is more

Yepps, but still a litle annoying, I did match every single resistor/transistor for bouth channals to be 99% the same
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