question about output transformer for guitar amp

hpupo · 14th April 2011, 03:01 PM

Hello

How much should I under rate the output transformer for a class a single ended guitar amp.
I read part of the particular sound configuration exhibits is due to saturation of the transformers. I am not too familiar with them. Let's say I am designing a 5W power amp, what ratting should the transformer have? 3W? 5W? 10W?

Thanks

azazello · 14th April 2011, 03:51 PM

10 W.

costis_n · 14th April 2011, 07:33 PM

For saturation, I d say 5W at most.

SemperFi · 14th April 2011, 08:33 PM

For guitar no need to over rate the ot. The lowest notes ull play is maybe 80Hz, but mostly the tone hovers round 150-1000Hz. U wont saturate anything but the tubes, in a good way.

SHiFTY · 14th April 2011, 08:53 PM

the best sounding distortion is when you overdrive the power tubes. And even then only slightly...

Transformer distortion just sounds nasty IME...

Printer2 · 15th April 2011, 02:46 AM

Quote:

Originally Posted by SHiFTY

the best sounding distortion is when you overdrive the power tubes. And even then only slightly...

Transformer distortion just sounds nasty IME...

Agreed. First you end up dropping the low end and your guitar starts sounding thin. Just gets worse from there. Best to get a transformer rated for the power you plan to put out.

hpupo · 15th April 2011, 01:53 PM

Thanks a lot... I appreciate everyone's input.

14th April 2011, 03:01 PM	#1
hpupo diyAudio Member Join Date: Feb 2011	question about output transformer for guitar amp Hello How much should I under rate the output transformer for a class a single ended guitar amp. I read part of the particular sound configuration exhibits is due to saturation of the transformers. I am not too familiar with them. Let's say I am designing a 5W power amp, what ratting should the transformer have? 3W? 5W? 10W? Thanks

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14th April 2011, 03:51 PM	#2
azazello diyAudio Member Join Date: Aug 2008 Location: Bulgaria	10 W.

14th April 2011, 07:33 PM	#3
costis_n Tinkerer diyAudio Member Join Date: Aug 2008	For saturation, I d say 5W at most.

14th April 2011, 08:33 PM	#4
SemperFi diyAudio Member Join Date: Jan 2002 Location: nowhere	For guitar no need to over rate the ot. The lowest notes ull play is maybe 80Hz, but mostly the tone hovers round 150-1000Hz. U wont saturate anything but the tubes, in a good way.

14th April 2011, 08:53 PM	#5
SHiFTY diyAudio Member Join Date: Jul 2002 Location: New Zealand	the best sounding distortion is when you overdrive the power tubes. And even then only slightly... Transformer distortion just sounds nasty IME...

15th April 2011, 01:53 PM	#7
hpupo diyAudio Member Join Date: Feb 2011	Thanks a lot... I appreciate everyone's input.

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