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Topics - Jaxon

#1
Amplifier Discussion / Where to get transformers???
March 19, 2008, 03:17:04 PM
I'm looking at a LM1875 amp kit. The power supply requires a 120/60VA/35VCT transformer. Where is a good place to find such a monster?
#2
I stopped by my local RS yesterday to pick up some pcb board and ferric chloride. They only had dual clad board and NO ferric chloride. The current mobile phone salesman working there told me they don't carry it anymore. What's a good source for this stuff online?

Also, I came across a recipe for etchant that is a mix of muriatic acid and hydrogen peroxide. Has anyone used this? And what were your results?
#3
Amplifier Discussion / Preamp question
February 27, 2008, 05:21:17 PM
Would it be possible to take a dist circuit such as the Eighteen over at ROG and use it for a preamp to a LM1875 based power amp? And would it also be possible to build said amp so that a different setup such as a pedal board could be inserted into the circuit at the power amp thus bypassing the builtin preamp? If not, please educate me as to why. Thanks!
#4
Amplifier Discussion / Power transformer question.
February 25, 2008, 09:03:23 PM
I have a working transformer that came out of a Crate 80 watt tube/mosfet amp from the 90s. It has no markings on it and Crate apparently doesn't give away their schems. How can I tell what the secondaries provide? Would it be as simple as hooking it up and measuring the secondary leads with a meter?
#5
Amplifier Discussion / Inverting/non-inverting?
February 25, 2008, 06:47:16 PM
These are new terms I am seeing over and over with SS electronics. What exactly does inverting/non-inverting mean?
#6
The Newcomer's Forum / Hello!
February 23, 2008, 09:48:14 AM
Hey everybody! Just wanted to introduce myself. I've been fooling around with tube amps for a few years. NOT a guru by any stretch, just learned enough to be dangerous.  :duh  I got into the low wattage tube amp thing looking for cranked tone without the volume. Even low wattage amps get much louder than one would think. And to get the distortion most people want, you still stick a pedal in front of it!

Another guy at work plays bass and we both have an interest in guitar gadgets and such. This is how we came to acquire Minty Amp kits! Most of you probably know but this is a LM386 based amp and I was impressed at how such a simple circuit sounded. It drives my homebrew 4x12 at the volume I was looking for with the tube amps. Has some good distortion and with a pedal, it rocks.  :tu:  So, what I have in mind is a slightly more powerful and cleaner, small SS amp that would sit between my pedal chain and speaker. Can someone point me to such a project? I'm thinking something around 2W with gain, volume and possibly a tone stack.

cheers!