Search found 14 matches

by JohnBlakeArnold
21 Dec 2015, 19:28
Forum: Amplifiers
Topic: Any Kevin O'Conner books on PDF??
Replies: 65
Views: 80376

Re: Any Kevin O'Conner books on PDF??

Having paid over 600$ for Kevin's 11 books, I am not going to share on pdf as if it were the 3rd Real Book..... I also have both of Merlin's, and he has another coming out in 2016. As stated, both reinforce each other because there is no guessing-- each has appropriate, mathematically accurate elect...
by JohnBlakeArnold
06 Mar 2014, 01:43
Forum: Transistors
Topic: a case against the j201?
Replies: 19
Views: 26464

Re: a case against the j201?

Can't download from original link, so here in entrity is: Teemu Kytala Solid State Guitar Ampilifiers http://www.johnblakearnold.com/solidstate_guitar_amplifiers_teemu_kyttala_v1.0.pdf Upfront, my ISP sucks balls, so this simple 415 pg. book in pdf format takes about 16 minutes to load into browser ...
by JohnBlakeArnold
14 Apr 2013, 19:56
Forum: Ready-To-Build Effect Projects
Topic: MAGNUS MODULUS - PROJECT - PT2399 ECHO/Chorus/Tremolo/Boost
Replies: 225
Views: 40207

Re: MAGNUS MODULUS - PROJECT - PT2399 ECHO/Chorus/Tremolo/Bo

If you take the two switches out of the circuit (not the footswitch, just the two that determine what functionality is current), you get the circuit such that as you manipulate the pots, you get each of the effects you want. There is a lot of blending capabilities. I believe you will be able to hunt...
by JohnBlakeArnold
04 Feb 2013, 19:31
Forum: Ready-To-Build Effect Projects
Topic: MAGNUS MODULUS - PROJECT - PT2399 ECHO/Chorus/Tremolo/Boost
Replies: 225
Views: 40207

Re: MAGNUS MODULUS - PROJECT - PT2399 ECHO/Chorus/Tremolo/Bo

I am not trying to be a dick about this; and God knows I appreciate every bit of effort every person contributes to these forums. At no time did I say that "it needs to be checked against a prior vero." My point was the work had already been done-- and done very well-- more than two years ago. The p...
by JohnBlakeArnold
04 Feb 2013, 15:17
Forum: Ready-To-Build Effect Projects
Topic: MAGNUS MODULUS - PROJECT - PT2399 ECHO/Chorus/Tremolo/Boost
Replies: 225
Views: 40207

Re: MAGNUS MODULUS - PROJECT - PT2399 ECHO/Chorus/Tremolo/Bo

This is the post to the vero I was talking about, and which, ironically was mentioned in an earlier post at the top of this very page.... Kudos!

https://www.aronnelson.com/gallery/main. ... s.jpg.html
by JohnBlakeArnold
04 Feb 2013, 15:15
Forum: Ready-To-Build Effect Projects
Topic: MAGNUS MODULUS - PROJECT - PT2399 ECHO/Chorus/Tremolo/Boost
Replies: 225
Views: 40207

Re: MAGNUS MODULUS - PROJECT - PT2399 ECHO/Chorus/Tremolo/Bo

I did the vero build of this board which was in the vero section (user files section?) as verified for like two years. I have done two complete builds with that vero so I can confirm it, and further, I felt that it gave a lot more control over delay rate than the printed boards. However, this vero p...
by JohnBlakeArnold
26 Nov 2012, 20:52
Forum: DIY Stompbox designs
Topic: Are the "Q" variables in Unit of Charge and Wah alike?
Replies: 10
Views: 2346

Re: Are the "Q" variables in Unit of Charge and Wah alike?

From http://en.wikipedia.org/wiki/Q_factor "In physics and engineering the quality factor or Q factor is a dimensionless parameter that describes how under-damped an oscillator or resonator is, or equivalently, characterizes a resonator's bandwidth relative to its center frequency. Higher Q indicate...
by JohnBlakeArnold
24 Nov 2012, 06:18
Forum: DIY Stompbox designs
Topic: Are the "Q" variables in Unit of Charge and Wah alike?
Replies: 10
Views: 2346

Re: Are the "Q" variables in Unit of Charge and Wah alike?

I'm not saying anything about capacitance at all. I think there is a difference in scope in considering the defined value of Q at any point in time or physical location on the circuit, and how the values on the circuit change as the value of Q changes.
by JohnBlakeArnold
24 Nov 2012, 01:45
Forum: DIY Stompbox designs
Topic: Are the "Q" variables in Unit of Charge and Wah alike?
Replies: 10
Views: 2346

Re: Are the "Q" variables in Unit of Charge and Wah alike?

Since I come to these forums asking a question in order to learn, can someone give me a few examples of where in a basic guitar circuit Q in coulombs would be found and measured?
by JohnBlakeArnold
23 Nov 2012, 21:02
Forum: DIY Stompbox designs
Topic: Are the "Q" variables in Unit of Charge and Wah alike?
Replies: 10
Views: 2346

Re: Are the "Q" variables in Unit of Charge and Wah alike?

"although the filter can be swept up and down in frequency, the higher the "Q", the narrower the bandwith and vice versa.."

Isn't a "change in the quantity of electricity" ~Q~ [via a variable resistor] the exact mechanism used to "sweep" through the filter?
by JohnBlakeArnold
23 Nov 2012, 20:15
Forum: DIY Stompbox designs
Topic: Are the "Q" variables in Unit of Charge and Wah alike?
Replies: 10
Views: 2346

Are the "Q" variables in Unit of Charge and Wah alike?

I've been boning up on my actual electronics learning. I came across this nifty definition for Charge, and the International Unit of Charge, the coulomb. "1.2 Charge The unit of charge is the coulomb (C) where one coulomb is one ampere second. (1 coulomb D 6.24 ð 1018 electrons). The coulomb is defi...
by JohnBlakeArnold
05 Sep 2011, 16:09
Forum: Ready-To-Build Effect Projects
Topic: MAGNUS MODULUS - PROJECT - PT2399 ECHO/Chorus/Tremolo/Boost
Replies: 225
Views: 40207

Re: MAGNUS MODULUS - PROJECT - PT2399 ECHO/Chorus/Tremolo/Bo

Cathexis did one, I am also loading up the components on this perf board, but wanted to use the GuitarPCB board as a guide first. The link is here (to a different board, that also has good Mag Mod info): http://www.aronnelson.com/gallery/main.php/v/cathexis/Veroboard+Layouts/Magnus+Modulus/ along wi...
by JohnBlakeArnold
05 Sep 2011, 03:45
Forum: Ready-To-Build Effect Projects
Topic: MAGNUS MODULUS - PROJECT - PT2399 ECHO/Chorus/Tremolo/Boost
Replies: 225
Views: 40207

Re: MAGNUS MODULUS - PROJECT - PT2399 ECHO/Chorus/Tremolo/Bo

That is how I originally had, and I got a thumping like a bass heartbeat. I'll go back and work on it tomorrow. If I was conceptually right, then it was a functional, building mistake. Thanks for the quick feedback! By the way, I'm super happy the board is back up, and I saw MerlinB post above. I re...
by JohnBlakeArnold
05 Sep 2011, 03:28
Forum: Ready-To-Build Effect Projects
Topic: MAGNUS MODULUS - PROJECT - PT2399 ECHO/Chorus/Tremolo/Boost
Replies: 225
Views: 40207

Re: MAGNUS MODULUS - PROJECT - PT2399 ECHO/Chorus/Tremolo/Bo

Howdy, Long time lurker, first time poster. I have completed my first valid build of the Magnus Modulus with a board ordered from GuitarPCB.com. I really like the circuit. It does everything I expected and more with the simple boost the GAIN pot can give with everything else minimized. But I have to...