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best sounding Tx for sub 10watt class A audio amp?
best sounding Tx for sub 10watt class A audio amp?
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Old 1st October 2009, 06:55 PM   #1
mondogenerator is offline mondogenerator  England
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Default best sounding Tx for sub 10watt class A audio amp?

can anyone offer suggestions for a low power(sub 10-15W) transistor for power amp stage. possibly with a view to paralleling up multiple devices (maybe 8) to increase power output...so i guess something with Vcc>15v...

the main consideration is sound quality and power is 2nd consideration although, 30-50watts with multiple devices would be desirable, as my speakers are only 88dB/watt hehe

also i am considring using lf353 or similar for a pre amp stage.

(as ive had it with the TIP3055/2955 class AB i built from Elliots site; good as it may well be, i got too much supply noise and it was a bit too powerful on 45v supplies ---oops)

bearing all this in mind does anyone have any ideas?
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Old 1st October 2009, 08:34 PM   #2
nigelwright7557 is offline nigelwright7557  United Kingdom
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Quote:
Originally Posted by mondogenerator View Post


and it was a bit too powerful on 45v supplies ---oops)
Its a false economy to skimp on power supply voltage.
I designed an amp and was amazed how quickly the transients were clipped with lower rail voltages.
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Old 2nd October 2009, 06:21 AM   #3
mondogenerator is offline mondogenerator  England
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Quote:
Originally Posted by nigelwright7557 View Post
Its a false economy to skimp on power supply voltage.
I designed an amp and was amazed how quickly the transients were clipped with lower rail voltages.
sorry typo...it was +/- 45 DC
so somehow i dont think low voltage was the issue lol

up to +40/-40 VDC would be ok
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