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It looks like their 12AX7, grey plate. It's a good sounding tube.
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Most starter-batteries found in scooters here in Denmark, are around 12V / 4Ah. That'll give you about 2 hours of play time at max volume. As they weigh 1,6...
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I like pentodes. So I normally use a multi-poled switch to switch between different capacitors. My latest invention is a 2 row 12 position switch, that switches...
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Welcome to the place!
What is the max voltage of the circuit? I bet it's more than 12V if that amp was made for a car system. And if so, you...
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That guy just can't build an amp or mod one, without destroying it. How the hell can he stay in business?
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I agree about the NOS-tubes. Funny thing is that those that weren't so attractive ten years ago - like the Sylvania 12AX7WA Grey Plates - are now an awesome...
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What is wrong here? Newly built amp makes a weird noise!
Hi guys,
I've been building amps for a few years now, and I've been able to solve most of my own problems by my own up till now.
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I smell a resistor across the a linear magnetic volume pot :-)
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Mount the sockets on rubber grommets. Tie some thick, flameretardent material around them, to get some absorbant mass around the glass bottle.
...
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Oh, and the IEC-socket with built in fuse is what I use. As well as building my own eyelet boards, I add eyelets for PCB-mounted fuse-sockets. This is super...
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Great discussion - what of it that is on topic anyways!
I decided to construct my amplifier as such:
I fused the HT and heater...
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So a 500mA fuse would be replaced by a 350mA fuse... interesting! ;-) I'll see if I can construct a way of testing the practical aspect of it. Because I would...
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Fuse on both windings of a center-tapped secondary
Hello everyone,
It's almost 1:30AM here in Denmark, and my brain is therefore not working as well as it should be.
I am contemplating...
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Lucky it didn't develop an internal short! I'd really recommend that you install a couple of diodes in series with the tube rectifier. That trick from RG...
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They're from Saratov, Russia. I think it's the old Sovtek-model - don't think they're made anymore.
I've found a lot of good tones in the Shuguang...
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It is weird, as I've implemented stuff like this in super high-gain amps. I think you'd might want to look elsewhere for the problem, as it sounds to me like...
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PS: Deluxe Reverbs are awesome. If you only need one channel, check out the Dumble-schematics, and add an overdrive channel to the verb-channel with a spare...
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Instead of making things exciting by blocking websites (YT has sooo much good content for all kinds of people), try putting it into perspective. Young people...
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I have actually built an amp like the one you are talking about doing.
I made a couple of things switchable;
1) A general 6V6 /...
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Also, test the amp out mounted in it's chassis. You never know what it's picking up when sitting on the bench, like a cabriolet.
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I have nothing but good experiences with the SED tubes - both EL34 and 6L6.
I test them, of course, before use. The ones in my father's stereo...
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