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Old 14th May 2004, 05:00 PM   #1
rulezzz is offline rulezzz  Lithuania
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Default high performance but cheap amp

I want to make power amp of 2x30w.Can you post some links for cheap but good performance amplifier,or maybe i should use chip amp?
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Old 14th May 2004, 08:33 PM   #2
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Default Sometimes can be good to have an adress

This way i have what you want, a scratch... and no adress to send you.
As this amplifiers cannot be published this way.... only sending directly straigth to you.
I have the necessary good will.... but.... without adress....
Carlos
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 15th May 2004, 01:04 AM   #3
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Hi Carlos,

I'm allways interested in new circuit topologies! Could you mail me a copy?

Best regards,
Thijs
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Old 15th May 2004, 06:36 AM   #4
sss is offline sss  Israel
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Default Re: high performance but cheap amp

Quote:
Originally posted by rulezzz
or maybe i should use chip amp?
go for it !!!
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Old 15th May 2004, 03:01 PM   #5
thanh is offline thanh  Viet Nam
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30w?
I use slone's topo.
Input stage and vas :2sc1815/2sa1015
output stage:2sb688/2sd718
2sc1815 is very cheap,OK?you can also buy 2sc2240/2sa978
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Old 15th May 2004, 03:03 PM   #6
rulezzz is offline rulezzz  Lithuania
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and what do you think about lm's..?
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Old 15th May 2004, 03:11 PM   #7
thanh is offline thanh  Viet Nam
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Has anyone here built a Slone Amp or a Tigersaurus?
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Old 15th May 2004, 03:30 PM   #8
sam9 is offline sam9  United States
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I built a version of Slones 11.4 which is normally ~75-100W but with a power supply that limits it to 45-50W. No problems. You could probably scale it back to 30W but I think you might need to change a couple of resistor values -- probably at least the one that sets the tail current.

Scaled back to that power level you could probably use TIP3055 and TIP2955 for output devices with little penalty - on the plus side they have a smaller footprint, cost less and there would be little chance of getting counterfiets (not a trivial consideration, unfortunately).

On a completely different tack, 30W is well within the capabilities of several IC amplifiers. The TDA7294 comes to mind and is one of the few that (per the specsheet, at least) approaches the measured perfomance potential of good discrete amps.
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