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Old 26th February 2004, 11:24 AM   #1
trancy is offline trancy  Slovenia
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Default zen on 4 ohms

what should i change on zen1 (original one) if i want to drive 4 ohm speakers...yes i know...paralel amp, but i dont want that...

thanks
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Old 26th February 2004, 11:54 AM   #2
hacknet is offline hacknet  Singapore
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i`m no pro, just trying to help.


you could try lowering the rail voltage or increasing the tran`s current handling.


with a lower load, i guess the only problem you will face would be a lack of current.
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Old 27th February 2004, 05:37 AM   #3
trancy is offline trancy  Slovenia
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yaeh, but simplier for me will be like that: change Rx from xx to yy, and so on....

hvala (thanks)
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Old 29th February 2004, 07:20 AM   #4
trancy is offline trancy  Slovenia
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Quote:
Originally posted by trancy
yaeh, but simplier for me will be like that: change Rx from xx to yy, and so on....

hvala (thanks)
anyone?
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Old 29th February 2004, 10:27 AM   #5
MikeW is offline MikeW  United States
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Default bias

There should be a .66 volt across a .33 ohm R1. This sets the bias at 2 amps.
Change the value of R1 to a lower value. A .22 ohm will give 3 amp bias. Two .33 ohm in parrallel .165 ohm will be 4 amp bias.
This will make the amp run hotter. Have plenty on heatsinking.
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Old 29th February 2004, 06:54 PM   #6
trancy is offline trancy  Slovenia
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Default Re: bias

Quote:
Originally posted by MikeW
There should be a .66 volt across a .33 ohm R1. This sets the bias at 2 amps.
Change the value of R1 to a lower value. A .22 ohm will give 3 amp bias. Two .33 ohm in parrallel .165 ohm will be 4 amp bias.
This will make the amp run hotter. Have plenty on heatsinking.
only that...its simple...thanks
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