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Old 28th October 2012, 01:21 AM   #1
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Question Mighty Midget Amplifier and speaker requirements.

I’m really very new to DIY audio, and have been building up project by project; I have built a CMOY and an O2 headphone amp. I decided for my next project to build a simple valve amp, and reading Pmillitt’s article on the mighty midget thought that would be a great noobie amp to make. So I have now almost everything except the Edcor transformers, which I have ordered and hopefully will receive soon
The thing is I have realised it has an output of “With a B+ voltage of about 300V, the amp puts out about 3.5W per channel, while dissipating under 10W on the plates of the output tubes. THD at 1W into 8 ohms is about 0.7%. “ Now I have a pair of bookshelf kef q1’s “Amplifier Requirements: 15-120W” I know this is a silly question but will I need to buy some more speakers that only need 3.5W PC to drive them ?
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Old 28th October 2012, 03:04 AM   #2
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Your Q1's are a little low in sensitivity at 91db but should be fine if you dont need it loud.

Last edited by jerluwoo; 28th October 2012 at 03:06 AM.
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Old 28th October 2012, 10:43 AM   #3
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Quote:
Originally Posted by jerluwoo View Post
Your Q1's are a little low in sensitivity at 91db but should be fine if you dont need it loud.
Thanks for that, I dont play loud music
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