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Chip Amps Amplifiers based on integrated circuits

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Old 23rd November 2009, 04:30 AM   #21
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You're in the U.S. Okay, there's another option. An Elna Cerafine 4.7uF in parallel with the tiny 0.022uF (22nF) rectangular (not square) green polyester cap located in the drawer of Radio Shack. It is made by InterCap. The Elna is located in New York at Handmade Electronics, and they do have a website.

This may be easier and cheaper than finding a discontinued model of BlackGate.

A more expensive option is to use the recommended model of input filter transformer instead of an input filter capacitor. Check with Audiosector for more details on Input Transformer. It is employed as an isolation transformer so that DC doesn't pass.
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Old 23rd November 2009, 04:55 AM   #22
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Quote:
Originally Posted by danielwritesbac View Post
You're in the U.S. Okay, there's another option. An Elna Cerafine 4.7uF in parallel with the tiny 0.022uF (22nF) rectangular (not square) green polyester cap located in the drawer of Radio Shack. It is made by InterCap. The Elna is located in New York at Handmade Electronics, and they do have a website.

This may be easier and cheaper than finding a discontinued model of BlackGate.

A more expensive option is to use the recommended model of input filter transformer instead of an input filter capacitor. Check with Audiosector for more details on Input Transformer. It is employed as an isolation transformer so that DC doesn't pass.
Hey Daniel, How are the ones that Parts express has? like: Solen,Auricap, dayton, Kimber etc They have 2.2uf and 4.7uf.
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Old 23rd November 2009, 11:55 AM   #23
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You see, it would be ever so much cheaper to go with the One cap that Audiosector may recommend to you instead of buying fifty others that aren't specific. A low components count amplifier, like the Audiosector, has many months of labor gone into its component selection and so the specific sound for it is with specific components. Here is their forum: Audio Sector - diyAudio

Another possible option is a buffer or preamp project because those usually have an output capacitor and also because buffers and preamps may be helpful to some sources.

To answer your question, most speaker caps are "power" caps, not "signal" caps. To use one of these at line level, you'd need a second, much smaller, cap in parallel with the larger cap. This is called a "bypass cap." There's no telling which combination can work as the options are near-endless. So, its much easier to go with a single "known good" specific, rather than off the deep end into endless options (most of which have a shipping charge).

If you're looking for a "fast" answer, then combine this:
4.7 uF Electrolytic Capacitor
with this:
0.022F Polyester Capacitor rectangular--not the new square model

Of course, like most things at the mall, its not optimal. However, there's no reason to pay shipping on random selections.
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