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Old 4th September 2012, 07:01 PM   #1401
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Yes, those and others. I'm afraid I don't have an impedance plot for them, perhaps the manufacturer can help.
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Old 4th September 2012, 07:29 PM   #1402
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Originally Posted by Michael Rothacher View Post
Yes, those and others. I'm afraid I don't have an impedance plot for them, perhaps the manufacturer can help.
Thank you for responding. I'll ask the manufacturer.
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Old 21st September 2012, 08:55 PM   #1403
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Hello,

i have followed closely this nice tread, and is time to build my Simple Sit amp.

First i am planing to try L'amp version, and then Hammond 193 Version.

My question is,
do you think i can use (for economic reasons) hammond 193T instead 193V?

I now they have lower inductance(50mH) and only 2A current. Resistance is quite similar.

http://www.hammondmfg.com/pdf/5c0033.pdf

Of coarse Bias will be 2A Max, or lower.

Someone tried to use 193T?

Do you think 193T could be an option, although less features?

Thanks
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Old 22nd September 2012, 01:27 AM   #1404
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In my opinion, 100mH is about the practical lower limit if you intend to use this as a fullrange amp. The 193V is worth the extra $50. And, in the meantime, you may decide the lightbulb version is all you need.
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Old 22nd September 2012, 03:13 AM   #1405
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The article says about 12w with transfo? That's nice cause my 5w CCS version is plenty loud.
I'd say it's worth the extra dough.
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Old 23rd September 2012, 02:00 AM   #1406
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Quote:
Originally Posted by Michael Rothacher View Post
In my opinion, 100mH is about the practical lower limit if you intend to use this as a fullrange amp. The 193V is worth the extra $50. And, in the meantime, you may decide the lightbulb version is all you need.
Thank you Michael for your answer and also for sharing with us your excellent work.
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Old 23rd September 2012, 07:20 PM   #1407
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for the 193V sit guys , i have found a 2.5amp 4V battery for the bias .

few years to come with this one

Batterie cyclon 0819-0010 4V 2.5Ah - AMP3706 | All-batteries.fr
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Old 24th September 2012, 09:20 AM   #1408
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Old 1st October 2012, 10:53 PM   #1409
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Bit late to the party, but hey ho.

This is my attempt. Vishay thick films instead of lightbulbs as a load and CLC power supply using some 280mH surplus chokes I had. Weights it at a cool 28kg! That's an even worse power/weight ratio than the valve amps I normally build.

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Old 1st October 2012, 11:05 PM   #1410
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Nice build. What value did you use for the Vishay thick film? 16 ohms?
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