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| Thanks for viewing my guestbook! It is a place for your quick comments or suggestions about AMZ. |
| Name: | amz-fx () |
| Posted: | Fri Dec 30 05:43:28 2005 |
| I just noticed that I got a brief mention in the Musician's Hotline online magazine:
| |
| Name: | MR COFFEE () sterling_soundNOSPAM_AT_bellsouth_DOT_net |
| Posted: | Sun Dec 11 21:32:05 2005 |
| Hi Jack, Donner Rusk said you were working on a compressor about 2-3 years ago - possibly for release as a product. Does it look like it's going to happen? Any details you are willing to share about your design? Any clips? Donner was impressed. Thanks for all you do for DIY. | |
| Name: | amz-fx () |
| Posted: | Thu Dec 8 19:42:42 2005 |
| Check out this bench power supply for vacuum tube projects. Includes instructions and schematic: | |
| Name: | amz-fx () |
| Posted: | Thu Dec 8 19:33:27 2005 |
| Hey, I got a very nice mention at this music portal site: | |
| Name: | amz-fx () |
| Posted: | Fri Dec 2 05:19:14 2005 |
| Here's a schematic for a 3-channel electric guitar preamp: | |
| Name: | Chris (USA) Streetcow_AT_gmail_DOT_com |
| Posted: | Mon Nov 28 17:58:44 2005 |
| Just built a web site for a bench power supply. I decided to make one of these after looking around and finding nothing available for the homebrew, DIY and old radio restorer. It works great and I'll never power up in the shop with out it. The schematic and plans are free, have fun building one for yourself. | |
| Name: | amz-fx () |
| Posted: | Fri Nov 25 23:36:55 2005 |
| Ready to build your first DiY mini-synth? | |
| Name: | amz-fx () |
| Posted: | Fri Nov 18 15:36:23 2005 |
| Interesting VSTi: | |
| Name: | amz-fx () |
| Posted: | Fri Nov 18 14:42:08 2005 |
| Get a free software plug-in that does amp emulations: | |
| Name: | Damien (Australia) zapmagic_AT_hotmail_DOT_com |
| Posted: | Sat Oct 29 18:49:51 2005 |
| Hey jack! Long time no post on here.... found a website that might be of use. Its a forum that is used as a database for all things audio and tube related. http://www.vdd.draget.net/cgi-bin/YaBB/YaBB.pl Damien | |
| Name: | amz-fx () |
| Posted: | Tue Oct 4 11:30:35 2005 |
| Note to self... #38 copper wire,
0.1007mm diameter and 2.11 ohms per meter.
| |
| Name: | amz-fx () |
| Posted: | Wed Sep 28 19:34:05 2005 |
| Build a true-bypass strip:
| |
| Name: | amz-fx () |
| Posted: | Fri Sep 16 05:06:36 2005 |
| I was amused when I recently read on one of the effects forums that mosfet boosters are cleaner than jfet boosters. Is this true? Certainly not. A jfet booster can be just as clean as one based on a mosfet.
What causes the difference in sound? It is the subtleties of the designs that make the difference -- how the gain is implemented and controlled. For example, higher input impedance (up to a point) makes for a more extended high end to the sound. Is the AMZ Mosfet Booster cleaner sounding than the Mini-Booster? Yes, but it has to do with the gain control method. Read more about this at:
| |
| Name: | amz-fx () |
| Posted: | Mon Sep 12 06:20:14 2005 |
| Have yo ever used Google News to find the latest info on guitar effects or schematics? Go to the site below and enter your search word to get the latest:
| |
| Name: | amz-fx () |
| Posted: | Sat Sep 3 04:32:16 2005 |
| There is a new stompbox web site with some great resources... check it out: | |
| Name: | Martin Martinez (Uruapan,Michoacan,Mexico) kenokesiyahoo_DOT_com_DOT_mx |
| Posted: | Thu Aug 25 13:47:09 2005 |
| Hi just to say thanks, been here a lot of times and got so many good ideas as well as schms, and never saw up to the nav bar!! today found it and discovered your gstbk. so all i have to say is as before so many thanks and keep this great place going ,, maybe i'll send you something on may part too, like a cable tester i've been doin for years for my friends, is simple, 3 ICs runs on 9v and is used to check continuity, shorts and opens of trs,xlr and 4 pin speakon cables also w a small generator to test speakers or else i'll try to get some time between jobs and do the schm,photos and description. should i send you the compressed files separate or as a single doc? gby and thanks again Martin | |
| Name: | Kaarlo Kangasniemi (Finland) pete_DOT_purplepie_AT_welho_DOT_com |
| Posted: | Fri Aug 12 11:30:40 2005 |
| Hi there, could you say where i can found Frank Clarke´s Hot harmonics shematics? | |
| Name: | amz-fx () |
| Posted: | Wed Aug 10 09:25:59 2005 |
| Some free electronic reference works: The Scientist and Engineer's Guide to Digital Signal Processing by Steven W. Smith, Ph.D. http://www.dspguide.com/pdfbook.htm Free chapters from Op Amp Applications Handbook, edited by Walt Jung http://www.analog.com/library/analogDialogue/archives/39-05/op_amp_applications_handbook.html Free download: A Designer's Guide to Instrumentation Amplifiers, written by Charles Kitchin and Lew Counts http://www.analog.com/library/analogDialogue/archives/39-06/in_amp_guide.html Lessons in Electric Circuits http://www.ibiblio.org/obp/electricCircuits/ Basic Electronics http://science-ebooks.com/electronics/basic_electronics.htm Electronic Construction from A to Z http://www.morsex.com/building/atoz.htm | |
| Name: | amz-fx (USA) |
| Posted: | Sun Jul 31 13:54:15 2005 |
| I wrote an article about web design for Diskmakers, who offer many affordable packages for CD and DVD production.
| |
| Name: | amz-fx () |
| Posted: | Fri Jun 10 20:05:03 2005 |
| Reverse voltage circuit proection from 1996 | |
| Name: | amz-fx |
| Posted: | Tue May 17 21:38:37 2005 |
| NOTICE: A spammer recently use a muzique.com return address on his trash! That sucks!
I do not sell or otherwise disclose your email address to any third party. There is NO SPAM that is actually originating from muzique.com
Thanks, Jack | |
| Name: | amz-fx (USA) |
| Posted: | Wed Apr 27 18:18:11 2005 |
| Looking for a different seach engine from Google? Try Clusty: | |
| Name: | Wayn () wain1051_AT_yahoo_DOT_com |
| Posted: | Thu Apr 7 22:54:28 2005 |
| I am looking for a Boss TU-2 schematic. The pedal turns on and the displays changes rapidly and continuously with no input. Any help. please email schematic. Thanks. | |
| Name: | danny (israel) peacock1_AT_netvision_DOT_net_DOT_il |
| Posted: | Wed Mar 2 14:53:01 2005 |
| dear mr. jack orman i'v been bulding gtr fx for a few months now and its amazing i just wanna say thanks for all the helpfull info on your site i built you fuzz face and muff boost and am useing them both in my band just wanted to thank you and give credit & respect. danny from israel Thank you! regards, JACK | |
| Name: | amz-fx () |
| Posted: | Tue Mar 1 21:52:56 2005 |
| Affordable pcb software: | |
| Name: | amz-fx () |
| Posted: | Mon Feb 28 08:54:54 2005 |
| These look to have some interesting applications: | |
| Name: | () |
| Posted: | Sun Feb 27 01:35:30 2005 |
| Name: | amz-fx () |
| Posted: | Mon Feb 21 19:41:10 2005 |
| How long have there been boutique effects? I don't know but I owned a record and music store in 1976-1977 where I built and sold handmade custom effects boxes... they even had true bypass switching! (Thanks to Craig Anderton) That's right, 1976... years before the Internet and way way before the current crop of small effects manufacturers had popped up. :)
regards, Jack | |
| Name: | amz-fx () |
| Posted: | Fri Feb 18 16:34:34 2005 |
| Note: I will usually respond to your email about your parts order within 24 hours (not counting weekends). However, if your Paypal account is registered with an email address that you no longer use, or you spell your email incorrectly on my order form or Hotmail (Yahoo, AOL, etc.) deletes my message because it flags it as junk mail, then you may think you are not getting a response. Don't assume your messages are not being answered. | |
| Name: | MIke () mikabodcrane_AT_aol_DOT_com |
| Posted: | Sat Feb 12 12:05:13 2005 |
| Jack Concerning my YAFF post below. Its not really the distortion of the YAFF, but the volume. The pedal produces a cut in volume with the effect in at almost all levels of the volume knob except very close to full rotation. I did add the tone control from the Fuzz Face and used .22uf for C3 as you suggested. Also I located the tone control inboard of the volume control, not outboard with a 2.2uf coupling capacitor as you have on the Fuzz Face. Could this result in volume loss? Does the volume pot resistance value need to be altered in either case from the 500K value to account for the addition of the tone control? Thanks | |
| Name: | amz-fx () |
| Posted: | Thu Feb 10 19:31:42 2005 |
| Robert Keeley quoted me in his Pedal Power column in Musician's Hotline magazine: | |
| Name: | Mike () allowmj13_AT_aol_DOT_com |
| Posted: | Tue Feb 1 09:25:59 2005 |
| Thanks for the RF advice on the YAFF, it worked great. Still not sure if I am getting the intended sound. Here are the voltage values on the transistors,do they look ok? Q1 c 1.76 b .67 e 0 Q2 c 4.7 b 1.8 e 1.1 Those readings look good! If you put the 10k ahead of C1, you may have to reduce it to 1k - 5k to get more distortion, if that's what you are looking for (as long as it kills the RF). -JACK | |
| Name: | donald stringer (usa) troublerat_AT_alltel_DOT_net |
| Posted: | Sat Jan 22 16:14:18 2005 |
| I have my dd-5 apart and I am trying to do the high cut mod. Where would you put cap. and what size would you suggest to do the cut? I am also working on a tap tempo idea, instead of using the foot tap method[I have made one of those] I want to use the signal sent from the strings to set the tempo, I believe all this involves is making a simple circuit[like a tuner] that is sensitive to guitar tones. That is converts your string signal to decibel level and use that to trip a reed relay to open and close in time with your usual required 4 beats in order for the boss dd-5 to pick up the tempo. Am I close ? thanks
I am not familiar with that mod so I can't really comment on it. I think the tap tempo idea is going to be more complicated than you propose and a relay isn't really the way to go, IMHO -JACK | |
| Name: | Mike (USA) Mikabodcrane |
| Posted: | Fri Jan 14 09:13:30 2005 |
| Hello Jack I've completed my Yaff with tone control. Its lots of fun. I am picking up a good deal of RF. You recommended substituting a 10K resistor for the C1 cap on the mini-booster for better RF rejection. Can the 10k be used on the YAFF circuit for same reason. Does value of C1 need to be changed or eliminated? You have to keep C1 in the YAFF. But you can add the 10k in series ahead of C1 and see if that fixes the problem. -JACK | |
| Name: | amz-fx () |
| Posted: | Fri Jan 7 13:29:34 2005 |
| Some great information on guitar building: | |
| Name: | amz-fx () |
| Posted: | Fri Jan 7 12:54:14 2005 |
| Paul Marossy has some nice pix of his Shaka Tube project and even some o-scope shots. Check it out! | |
| Name: | amz-fx () |
| Posted: | Wed Jan 5 04:18:30 2005 |
| Guitar Effects software for $20! Overdrive/Distortion, Echo, Reverb, Chorus, Wah-wah (AutoWah & EnvelopeWah), Pitch shifter, Tremolo, I/O Bass/Mid/Treble EQ controls, Compression and Phaser. Also, handy guitar tuner included. | |
| Name: | amz-fx () |
| Posted: | Mon Dec 27 15:52:08 2004 |
| Diode compensates for distortion in a common emitter amplifier: | |
| Name: | amz-fx () |
| Posted: | Wed Dec 22 17:41:22 2004 |
| Here's an interesting application note from Maxim on how to protect circuits from reverse polarity power connection... first appeared in EDN in March 1996. Enjoy! | |
| Name: | amz-fx () |
| Posted: | Sat Dec 18 15:42:30 2004 |
| Interesting reading: | |
| Name: | amz-fx () |
| Posted: | Mon Dec 13 12:35:03 2004 |
| My pal Robert Keeley has posted the schematic to one of his upcoming pedal designs... check out this one:
| |
| Name: | () |
| Posted: | Sun Dec 5 22:03:35 2004 |
| Name: | amz-fx () |
| Posted: | Sat Dec 4 07:39:03 2004 |
| A new FX book! Check it out and take advantage of the special offer: | |
| Name: | amz-fx () |
| Posted: | Sun Nov 28 15:15:33 2004 |
| Tracktion is a radical new type of music production software -- giving you a clean, intuitive, and clutter-free interface without losing professional features like drag-and-drop editing, a built-in sampler, VST plug-in and virtual instrument support, track freezing and more... all right at your fingertips. | |
| Name: | amz-fx () |
| Posted: | Sun Nov 21 08:36:38 2004 |
| Did you ever want to get into circuit simulation with Spice but could not afford one of the expensive programs? Linear Technoloy has generously provided a FREE version of Spice that is quite complete with a simulator, schematic capture and waveform viewer! | |
| Name: | Mike (USA) mikabodcrane_AT_aol_DOT_com |
| Posted: | Mon Nov 15 09:51:13 2004 |
| Jack I am building the YAFF and considering adding the tone control from the Fuzz Face. My question is with adding R9 and C7 values as given on the Fuzz Face, do I need to alter the value of C3 on the YAFF. Thanks I would make the value of C3 at least 0.1 if adding the tone control. Or even 0.22uf. -JACK | |
| Name: | amz-fx () |
| Posted: | Wed Nov 10 14:36:11 2004 |
| Reality TV for Analog Designers: | |
| Name: | amz-fx () |
| Posted: | Wed Nov 10 14:31:31 2004 |
| Wondering about the subtle differences in capacitors... read what the master, Bob Pease, has to say about them: | |
| Name: | amz-fx () |
| Posted: | Fri Nov 5 04:05:21 2004 |
| Active loads and CCS circuits and measurements: | |
| Name: | amz-fx () |
| Posted: | Wed Nov 3 12:56:29 2004 |
| Some old amplifier schematics: | |
| Name: | amz-fx () |
| Posted: | Sat Oct 30 06:21:37 2004 |
| Slim line switching wall mount power adapters --- 9v at 500ma which should power several pedals if chained together. An inexpensive alternative to the 1-Spot! | |
| Name: | Richard Lingenberg (USA) richard_AT_integrity_DOT_com |
| Posted: | Thu Oct 28 17:54:42 2004 |
| MXR PARTS: We have the world's largest surplus of original MXR parts, components and accessories. Feel free to call or email... | |
| Name: | amz-fx () |
| Posted: | Thu Oct 14 11:26:31 2004 |
| Are you interested in bridged-t notch filter design? There was a thread in the Stompbox Forum about this type of circuit... if you have a copy of the AMZ CD there is an article with schematics about this notch filter in the Lab Notebook section of the CD: | |
| Name: | amz-fx () |
| Posted: | Tue Oct 5 18:19:57 2004 |
| Did you ever wonder how much current a pedal draws? This is a website that lists many commercial pedals and their current requirements: | |
| Name: | amz-fx () |
| Posted: | Thu Sep 30 15:32:52 2004 |
| Need a datasheet for an electronic part? Try this link: | |
| Name: | amz-fx () |
| Posted: | Sun Sep 26 18:22:37 2004 |
| Elektor Electronics archives: | |
| Name: | amz-fx () |
| Posted: | Thu Sep 23 09:23:04 2004 |
| If you are interested in opamps, you should have Walt Jung's homepage bookmarked - lots of priceless info here: | |
| Name: | amz-fx () |
| Posted: | Fri Sep 17 15:59:48 2004 |
| Stack the DAC: | |
| Name: | amz-fx () |
| Posted: | Fri Sep 17 07:25:11 2004 |
| Get a free pcb made from your layout - offer expires at the end of September: | |
| Name: | amz-fx () |
| Posted: | Thu Sep 16 05:44:11 2004 |
| I found this info about GE transistor Spice models in sci.electronics.cad: Make sure you verify these models before you use them. The only thing I remember about Germanium BJT models is that the energy gap parameter EG should be set to 0.7 or so, not the default 1.11 (some say 1.16) for Si. None of these models have set the EG parameter. Not that there aren't enough degrees of freedom with all the other parameters to fudge one's way around EG, specially if one is not modeling temperature-dependence; this is just dubious and worth verifying. *PNPGE1 MCE 8-12-97 *Ref: ECG Semiconductors Master Replacement Guide 1996 Edition *Ge 150mW 20V 300mA 5MHz pkg:TO-5 3,2,1 .MODEL PNPGE1 PNP (IS=1.51N NF=1 BF=52 VAF=80.5 IKF=0.18 ISE=16.8N NE=2 + BR=4 NR=1 VAR=80 IKR=0.27 RE=0.172 RB=0.687 RC=68.7M XTB=1.5 + CJE=38.2P VJE=1.1 MJE=0.5 CJC=12.3P VJC=0.3 MJC=0.3 TF=31.8N TR=22.1U) *PNPGE2 MCE 8-12-97 *Ref: ECG Semiconductors Master Replacement Guide 1996 Edition *Ge 150mW 16V 250mA 2MHz pkg:TO-5 3,2,1 .MODEL PNPGE2 PNP (IS=1.25N NF=1 BF=117 VAF=72 IKF=0.15 ISE=6.22N NE=2 + BR=4 NR=1 VAR=80 IKR=0.225 RE=0.206 RB=0.824 RC=82.4M XTB=1.5 + CJE=33P VJE=1.1 MJE=0.5 CJC=10.7P VJC=0.3 MJC=0.3 TF=79.5N TR=55.2U) *PNPGE3 MCE 8-12-97 *Ref: ECG Semiconductors Master Replacement Guide 1996 Edition *Ge 340mW 32V 500mA 2.5MHz pkg:TO-5 3,2,1 .MODEL PNPGE3 PNP (IS=2.51N NF=1 BF=136 VAF=102 IKF=0.3 ISE=10.7N NE=2 + BR=4 NR=1 VAR=40 IKR=0.45 RE=0.103 RB=0.412 RC=41.2M XTB=1.5 + CJE=58.7P VJE=1.1 MJE=0.5 CJC=18.9P VJC=0.3 MJC=0.3 TF=63.6N TR=44.2U) | |
| Name: | amz-fx () |
| Posted: | Mon Sep 13 13:08:35 2004 |
| OT: The best freeware programs - free of spyware: | |
| Name: | amz-fx () |
| Posted: | Sun Sep 12 15:44:14 2004 |
| Here is a good chip source for some hard-to-find parts, Burr-Brown, Crystal and On Semi: | |
| Name: | amz-fx () |
| Posted: | Thu Sep 9 20:38:45 2004 |
| I think this is a Bode frequency shifter for guitar: | |
| Name: | amz-fx () |
| Posted: | Thu Sep 9 19:13:47 2004 |
| Get custom parts machined from your drawings: | |
| Name: | amz-fx () |
| Posted: | Thu Sep 9 19:12:45 2004 |
| A different way to make prototypes... lay out the board and they'll put it together for you, complete with parts: | |
| Name: | amz-fx () |
| Posted: | Thu Sep 9 14:05:31 2004 |
| Roland RE-201 Space Echo service documents... has some schematics in it. Big file: 10Mb! | |
| Name: | amz-fx () |
| Posted: | Thu Sep 9 12:10:05 2004 |
| Here's a great archive of d-i-y projects... not many of them are music related but it's a great resource nonetheless: | |
| Name: | amz-fx () |
| Posted: | Fri Sep 3 16:31:18 2004 |
| I've provided names for dozens of bands... I think it's so cool. See the list on my page at:
| |
| Name: | amz-fx () |
| Posted: | Sat Aug 21 17:22:37 2004 |
| The subject of the Rat and whether it is really a true-bypass pedal comes up so often that I wrote an article about it: | |
| Name: | amz-fx () |
| Posted: | Wed Aug 18 05:31:39 2004 |
| What have I been up to lately? http://www.microcinemascene.com/artman/publish/review_losers_lounge.php http://www.microcinemascene.com/artman/publish/review_the_screaming_dead.php http://www.microcinemascene.com/artman/publish/webmaster_tips_for_moviemakers.php regards, Jack | |
| Name: | amz-fx () |
| Posted: | Sun Aug 15 18:53:50 2004 |
| A new book about Guitar FX: | |
| Name: | amz-fx () |
| Posted: | Wed Aug 11 18:11:07 2004 |
| They've made a documentary about Bob Moog... check it out: | |
| Name: | amz-fx () |
| Posted: | Sun Aug 8 20:07:57 2004 |
| For the person who wrote me about the BC109 transistors... you email address was bad and bounced back to me. The BC109 is an NPN silicon transistor. -Jack | |
| Name: | amz-fx () |
| Posted: | Mon Aug 2 17:28:45 2004 |
| Freeware for the audio hobbyist: | |
| Name: | amz-fx () |
| Posted: | Tue Jul 27 08:01:08 2004 |
| Googlewhacking... is a game where you try to find a pair of search words that yield only a single site as a resposne from Google. Try these two keywords in Google: zafty blimp :) -Jack | |
| Name: | amz-fx () |
| Posted: | Sun Jul 25 16:27:03 2004 |
| I don't agree with all of the information on this site, but there is lots of interesting reading anyway: | |
| Name: | amz-fx () |
| Posted: | Sun Jul 18 15:01:09 2004 |
| A new schematic for your collections: | |
| Name: | Mark (USA) mark_AT_mcentrprises_DOT_com |
| Posted: | Fri Jul 9 06:49:46 2004 |
| I think the virtual amp is an awesome idea. I hope it some day comes to life. I know it will because it was thought of & spoken. Keep up the great work! Mark | |
| Name: | amz-fx () |
| Posted: | Thu Jun 10 11:12:23 2004 |
| Archives of the synth magazine, Synapse: | |
| Name: | amz-fx () |
| Posted: | Mon Jun 7 14:51:36 2004 |
| Legally purchase MP3s at very low rates! | |
| Name: | amz-fx () |
| Posted: | Mon Jun 7 04:31:40 2004 |
| There is a new forum about d-i-y audio recording projects and equipment... check it out! | |
| Name: | amz-fx () |
| Posted: | Tue Jun 1 06:09:06 2004 |
| Do you still like to tune your guitar by ear? Download this program that plays tones to which you match the pitch of each string: | |
| Name: | amz-fx () |
| Posted: | Thu May 27 10:55:18 2004 |
| How to write a VST plugin, complete with source code and a free ring-mod plugin: | |
| Name: | amz-fx () |
| Posted: | Tue May 25 13:41:54 2004 |
| You wanna hear about a bonehead move? London Power comes out with Volume 5 of their superb The Ultimate Tone series, and immediately closes their mail order department for a month. Who thought that was a good idea? | |
| Name: | tulio Federico (Argentina) tulecon99_AT_hotmail_DOT_com |
| Posted: | Mon May 10 19:19:32 2004 |
| Hola soy bajista y he estado haciendo algunos proyectos, como por ejemplo un distorsionador fuzz para bajo electrico y ahora estoy interesado en construir un compresor para bajo pero no puedo conseguir ssm2165, quisiera raber si ud. tiene idea de algun reemplazo para este circuito integrado. lo saluda muy attentamente Tulio Perez El SSM2165 está un disponible no más largo. Usted puede comprar el SSM2166 de la Small Bear Electronics -JACK. | |
| Name: | amz-fx () |
| Posted: | Tue May 4 11:54:12 2004 |
| Get a legal free version of ProTools! | |
| Name: | amz-fx () |
| Posted: | Wed Apr 28 20:12:58 2004 |
| Here is an interesting link... the discontinued products have schematics available! | |
| Name: | David (US) |
| Posted: | Fri Apr 16 06:52:25 2004 |
| Jack: I wanted to build an op-amp preamp for my acoustic using your "Basic Buffers" article and Gus Smalley's "Simple Octave Up". If I take your TL071 buffer, but substitute a pot and ratio resistor for the feedback loop, could this induce any kind of instability or noise? I was thinking of doing this with either a 071 or a 5534. | |
| Name: | amz-fx () http://www_DOT_muzique_DOT_com/email_DOT_htm |
| Posted: | Thu Apr 15 18:19:17 2004 |
| FYI: The European Union will ban lead solder in electronics as of July 1, 2006. This can be important if you live in Europe or ship products there. I'll post info about alternative solders as it becomes available. regards, Jack | |
| Name: | amz-fx () |
| Posted: | Thu Apr 15 11:14:07 2004 |
| A new search engine... try searching for effects schematics on this site: | |
| Name: | Ricky Vance (USA) gr_DOT_vance_AT_verizon_DOT_net |
| Posted: | Fri Apr 9 11:22:28 2004 |
| >>My employer just took out an insurance policy on my life for the amount of $1 Million!<>< I dunno Jack, if I were you I'd be starting my car by remote control!! Regards RDV | |
| Name: | Damien (Australia) |
| Posted: | Wed Apr 7 03:56:44 2004 |
| Making your own PCBs. Do you do it? if so how. Mainly a good program that i can draw up a schem then link it to a PCB design i can print out. Damien | |
| Name: | carson (usa) carson_AT_pyralis_DOT_net |
| Posted: | Thu Mar 11 18:33:32 2004 |
| You know the sound that a tube amp gets when you flip the off switch but continue to play for a little while? I've heard people call it the brown sound, although i believe this effect to be different than the brown sound talked about in some marshall amp mods. Does anyone know how to either mod an amp or create a foot pedal that gets the tube-amp-powering-down-sound? I'd even settle for a little info as to what is causing that sound. Power tubes being under powered? any help would be great thanks.
A variac is an AC voltage controller that is used to reduce the line voltage from the typical 120v to 100v or even less, which produces the brown-out type of sound. This method is hard on the amplifier though... -JACK | |
| Name: | amz-fx () |
| Posted: | Sun Mar 7 20:58:56 2004 |
| NOTICE: I have had a major hard disk crash and lost almost everything on my computer. My site and CD files are backed up but much of my recent work is not. It is a disaster, and I will not be on the forums much until I get my computer up and running properly again.
regards, Jack | |
| Name: | amz-fx () |
| Posted: | Tue Mar 2 17:32:59 2004 |
| My favorite CD of 2003: | |
| Name: | amz-fx () |
| Posted: | Tue Feb 17 10:33:02 2004 |
| Keeley Effects is offering some custom pedals with gorgeous handmade wooden enclosures. Check it out! | |
| Name: | amz-fx () |
| Posted: | Thu Feb 5 07:12:22 2004 |
| Bookmark this page with a great collection of datasheets for special electronic music chips such as the old SSM and CEM semiconductors, and some analog delay chips: | |
| Name: | amz-fx () |
| Posted: | Thu Feb 5 07:09:22 2004 |
| Scott Bernardi's synth projects: | |
| Name: | amz-fx () |
| Posted: | Wed Feb 4 01:38:01 2004 |
| Looking for a new project to build? How about a wireless transmitter for your axe? | |
| Name: | amz-fx () |
| Posted: | Tue Jan 27 05:22:33 2004 |
| I'm working on a new article and decided to measure some cables for inductance... interestingly, a 20ft. guitar cord that was stretched out straight across the floor had 0.022mH of inductance. When coiled into an 8" diameter loose coil on the floor, the inductance increased to 0.039mH. That's more than 50% increase... the lesson from this is to NOT leave your cords coiled up on the floor. -JACK | |
| Name: | amz-fx () |
| Posted: | Mon Jan 26 19:36:12 2004 |
| Nice amp chassis! | |
| Name: | amz-fx () |
| Posted: | Sun Jan 25 00:53:57 2004 |
| Kepro, who made pre-sensitized pc boards for photoetching, has gone out of business. The Kepro pcb products will now be supplied by: | |
| Name: | amz-fx () |
| Posted: | Fri Jan 23 07:02:20 2004 |
| Need help with DVD or VCD recording? | |
| Name: | amz-fx () |
| Posted: | Wed Jan 21 06:42:17 2004 |
| 16-channel Multi-track recording for your PC! | |
| Name: | Mike (USA) mikabodcrane_AT_aol_DOT_com |
| Posted: | Sun Jan 11 17:04:00 2004 |
| Jack I built the A/B switch box from the AMZ CD. It is a good unit, but I get the pop when swithing between outputs. I studied the triple bypass as presented later in the CD, but it appears I would be limit me to using a single LED. What is the best way to get rid of the pop and still have the two LEDs? Thanks, Mike You can put a 1M resistor from the input signal wire to ground and that should stop the pop. -JACK | |
| Name: | Max (P.R.C.) liqunchao_002_AT_hotmail_DOT_com |
| Posted: | Sun Jan 11 01:39:29 2004 |
| Thanks a lot ,Jack! And, here is a PICTURE of the pedal http://www.longzu2002.com/bbs/dispbbs.asp?boardID=1&ID=1139 But I am not sure if you can read this page or not cause it is an Simple Chinese site. And thank you again friend :) | |
| Name: | I have a question here!Thanks for your help. (P.R.C.) liqunchao_002_AT_hotmail_DOT_com |
| Posted: | Sun Jan 11 00:50:06 2004 |
| Guys, I am serching for a pedal, named MESA BOOGIE (Maybe it is the name of its producer)-V1 and its inside curcite,COULD ANYONE HELP ME A HAND ? And, I`m not quite GOOD at English .haha` ~So I say SORRY First. And Thank you All Mesa is an amplifier manufacturer and I'm not sure they offer an pedals. You can find them at http://www.mesaboogie.com/ -Jack | |
| Name: | amz-fx () |
| Posted: | Thu Jan 1 15:09:04 2004 |
| Walt Jung's page... read what the master of op-amps has to say about audio: | |
| Name: | amz-fx () |
| Posted: | Tue Dec 30 14:27:00 2003 |
| Dr. Tube has some interesting amp and audio schematics: | |
| Name: | () |
| Posted: | Mon Dec 29 17:51:15 2003 |
| Name: | amz-fx () |
| Posted: | Tue Dec 23 22:59:59 2003 |
| All kinds of decal paper: | |
| Name: | amz-fx () |
| Posted: | Tue Dec 23 15:32:08 2003 |
| A new pcb etch method: | |
| Name: | amz-fx () |
| Posted: | Thu Dec 18 05:16:44 2003 |
| Analog Synth news and schematics: | |
| Name: | amz-fx () |
| Posted: | Thu Dec 4 08:55:50 2003 |
| Sympathetic Vibratory Physics: | |
| Name: | amz-fx () |
| Posted: | Tue Dec 2 03:21:02 2003 |
| The human body has about 200pF of capacitance... | |
| Name: | amz-fx () |
| Posted: | Wed Nov 19 11:22:52 2003 |
| Here is an interesting collection that you may not have seen: | |
| Name: | amz-fx () |
| Posted: | Wed Nov 19 01:20:35 2003 |
| Here is a large collection of circuits that someone has collected from around the web, including the Paia scans from my site (that I had published with permission of Paia): | |
| Name: | amz-fx () |
| Posted: | Fri Nov 7 00:04:35 2003 |
| The information on this page is useful in diode clipping applications: | |
| Name: | amz-fx () |
| Posted: | Thu Nov 6 05:34:33 2003 |
| As long as I'm on the subject of weird science... | |
| Name: | amz-fx () |
| Posted: | Thu Nov 6 05:28:46 2003 |
| An unusual phenomenon: | |
| Name: | amz-fx () |
| Posted: | Tue Nov 4 03:53:08 2003 |
| This guy does some interesting experiments... | |
| Name: | amz-fx () |
| Posted: | Thu Oct 30 14:15:09 2003 |
| The negistor, lambda diodes and time running backwards in a superconducting zone... | |
| Name: | amz-fx () |
| Posted: | Wed Oct 22 12:01:41 2003 |
| Don't have enough projects to work on? How about some MP3 recording hardware? | |
| Name: | amz-fx () |
| Posted: | Mon Oct 20 11:23:10 2003 |
| So, you want to get into circuit bending? How about some schematics to get you started: | |
| Name: | amz-fx () |
| Posted: | Mon Oct 20 01:28:30 2003 |
| With the continued introduction of new US legislation limiting decompiling, reverse engineering and circuit deciphering, it may be illegal in the near future to trace the circuit of a commercial pedal... seems unlikely but think about the Fritz chip that would automatically delete software from your hard drive or prevent your computer from booting... or the proposed Database and Collections of Information Misappropriations Act that might be extended to protect fan lists or even link collections?
The Digital Millenium Copyright Act has provisions (17 U.S.C. sec. 1201(a)(1)(A)) to prevent the bypassing of technical measures meant to protect circuits and it is conceivable this could be used to extend protection to circuit reverse engineering... think it is not likely? Lexmark has used the DMCA to prevent the sale of aftermarket toner cartridges: http://news.com.com/2100-1023-979791.html Sony used the DMCA to threaten a hobbyist who reverse engineered the code in the Aibo robot dog and made some mods to have the robo-pet perform new tricks, even though he never revealed the secrets of the Aibo, and only relented under a mountain of adverse publicity and public pressure: http://www.sciam.com/article.cfm?articleID=0005510C-EABD-1CD6-B4A8809EC588EEDF Apple Computer also invoked the DMCA... The “anti-circumvention” provisions of the DMCA are broad and far reaching. Can pedal protection be far behind, and the day when we can post schematics long gone? Then again, I may be wrong....
ps: For those of you who are not interested in this subject and are disappointed that there were no schematics herein, I'll include a link to some Moog schematics http://www.fantasyjackpalance.com/fjp/sound/synth/synthdata/07-moog-micromoog.html Get a look at them before the DMCA shuts 'em down ;) | |
-JACK
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