Load lines--
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Search found 1311 matches
- Thu Feb 05, 2015 7:12 pm
- Forum: Technical Discussion
- Topic: Voltage Influence on Impedance
- Replies: 8
- Views: 1409
- Wed Feb 04, 2015 9:29 pm
- Forum: Technical Discussion
- Topic: Doubling capacity of first filter cap
- Replies: 36
- Views: 4255
Re: Doubling capacity of first filter cap
Since it is a single ended amp, there isn't any hum canceling in the power amp. The simple fix for your hum problem is to add a choke and a cap BEFORE the existing B+ tap for the OT. You need a choke that can handle the current—a 250ma. choke of about 4 to 10 henries would be good. The first cap can...
- Tue Feb 03, 2015 2:57 pm
- Forum: Technical Discussion
- Topic: Bypass cap for cathode bias push pull output tubes
- Replies: 6
- Views: 3127
Re: Bypass cap for cathode bias push pull output tubes
Mostly true.
Depending on where the bias is at and the impedance of the OT, there might be a period when it moves from Class A into AB1 but prior to clipping. In this case, the capacitor will have an effect.
Depending on where the bias is at and the impedance of the OT, there might be a period when it moves from Class A into AB1 but prior to clipping. In this case, the capacitor will have an effect.
- Tue Feb 03, 2015 2:24 am
- Forum: Garage Talk
- Topic: Ten Eyelets Short of a Board
- Replies: 2
- Views: 687
Re: Ten Eyelets Short of a Board
I think you're onto something with this. Maybe you need a verse about your honey swaging your eyelets in the wrong holes.
- Tue Feb 03, 2015 2:21 am
- Forum: Technical Discussion
- Topic: Cathode bias review
- Replies: 9
- Views: 1363
Re: Cathode bias review
Question: Okay, fine and dandy with all the formulas and stuff. How does that make the big resistor like a small resistor?
Answer: Valentine's Day.
Answer: Valentine's Day.
- Tue Feb 03, 2015 2:17 am
- Forum: Garage Talk
- Topic: Entitlement...its how I roll
- Replies: 19
- Views: 2861
Re: Entitlement...its how I roll
Okay, that monkey video got really weird—reminds me of studying chemistry when I was younger.
- Tue Feb 03, 2015 2:13 am
- Forum: Garage Talk
- Topic: Entitlement...its how I roll
- Replies: 19
- Views: 2861
Re: Entitlement...its how I roll
Well, the Audio Quest cable does have free shipping.
- Mon Feb 02, 2015 9:21 pm
- Forum: Technical Discussion
- Topic: The importance of guitar amp input circuits
- Replies: 31
- Views: 4394
Re: The importance of guitar amp input circuits
It started on Sept. 7, 2008.
- Mon Feb 02, 2015 7:29 pm
- Forum: Technical Discussion
- Topic: The importance of guitar amp input circuits
- Replies: 31
- Views: 4394
Re: The importance of guitar amp input circuits
Yes, but--that involves reading and stuff.
- Sun Feb 01, 2015 3:25 pm
- Forum: Garage Talk
- Topic: OSX Yosemite & USB MIDI: any known issues? - RESOLVED
- Replies: 3
- Views: 776
Re: OSX Yosemite & USB MIDI: any known issues? - RESOLVED
Lou, As Tony mentioned, there is an update to 10.10.2 available now. I would install that and see what happens. I have a 2009 Mini and just installed Yosemite (I was using Snow Leopard). Everything is working fine for me although I don't use midi. There were some bugs with Wifi, bluetooth and a few ...
- Sat Jan 31, 2015 9:30 pm
- Forum: Technical Discussion
- Topic: The importance of guitar amp input circuits
- Replies: 31
- Views: 4394
Re: The importance of guitar amp input circuits
In the first post, you mentioned wanting "a tutorial covering the importance of radio frequency suppression, signal to noise, microphonics, shielding, miller capacitance(and how it relates to series resistance, cable/shielding capacitance), etc." Then later you said that you "know the theory, [and h...
- Sat Jan 31, 2015 7:14 pm
- Forum: Technical Discussion
- Topic: The importance of guitar amp input circuits
- Replies: 31
- Views: 4394
Re: The importance of guitar amp input circuits
If you want to know the theory, learn the theory.
- Sat Jan 31, 2015 5:12 pm
- Forum: Technical Discussion
- Topic: The importance of guitar amp input circuits
- Replies: 31
- Views: 4394
Re: The importance of guitar amp input circuits
This would also be a good place to start:
http://ampgarage.com/forum/viewtopic.php?t=9023
All of the criteria the OP listed are a part of the basic design of a tube stage—learn those things and then you know how to tweak it or "design" for your specific needs and goals.
http://ampgarage.com/forum/viewtopic.php?t=9023
All of the criteria the OP listed are a part of the basic design of a tube stage—learn those things and then you know how to tweak it or "design" for your specific needs and goals.
- Wed Jan 28, 2015 4:36 am
- Forum: Garage Talk
- Topic: Bench light recommendations please
- Replies: 17
- Views: 3568
Re: Bench light recommendations please
I use a desk lamp and put a 60 or 75 watt bulb in it. Then I move it up as close as I can to where I am working (inches away). My eyes are getting so bad that I need a lot of light really close. I also have a Maglite flashlight close at hand for when I need even more light!
- Tue Jan 27, 2015 1:50 am
- Forum: Marshall Discussion
- Topic: 2061x clone build question
- Replies: 6
- Views: 1805
Re: 2061x clone build question
Quiz time.
1. What is the purpose of the turrets or eyelets on the board?
2. Find a gut shot of an amp that uses a turret board. Describe the method used to mount components and how the wires are connected to the components.
1. What is the purpose of the turrets or eyelets on the board?
2. Find a gut shot of an amp that uses a turret board. Describe the method used to mount components and how the wires are connected to the components.