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Messages - Max

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Open Discussion / Re: New wave of "lawsuit" guitars?
« on: June 29, 2019, 01:41:06 AM »
I'm no lawyer, but I would consider this:
the shape of the Flying V guitar “was very original when it was released on the market in 1958, it cannot however deny the evolution of the market during the following 50 years, which was henceforward characterised by a wide variety of available shapes.”
“The presence on the market of a significant number of shapes encountered by consumers makes it unlikely that they will regard a particular shape as belonging to a specific manufacturer rather than being just one of the variety of shapes characterising the market.”
and this:
the Flying V had become, “One possible variant of the many existing shapes.”
pretty interesting and possibly (or I should say hopefully) applicable to any body shape on the market. That would be a good blow to the big F and big G companies...

Open Discussion / Re: New wave of "lawsuit" guitars?
« on: June 27, 2019, 06:24:43 AM »
I think I'll report a B. May guy for copyright infringement on the headstock shape he used on his Red Special, suspiciously similar to the Flying V (can I say Flying V?).
As for the chinese copies: at least in Germany the customs are checking each guitar and kit guitar coming from china for copyright infringement, but I think they only check the brand on the headstock and eventually fake serial numbers and so, but it's getting difficult to have even kit guitars shipped to Germany, you can't even access the ebay page of these "producers" from, they are just empty.

How Do I? Beginner's Paradise. / Two channels, one stomp
« on: March 02, 2019, 06:51:45 AM »
OK, let's say I need to switch between two pots in order to have two different settings for the volume at the end of an effect. With a 3pdt stomp it would be fairly easy to do all the switching including two LEDs. But in reality I need to switch 4 pots in total, that is gain and volume per channel, so a 4pdt stomp would do it but there would be no room for a status-LED.
So, here's my question: if I only switch the output (connected to the wiper) between the two pots and leave the input and GND connected then the circuit upstream will see half the resistance, i.e. the two pots in parallel.
Shall I double the pots' resistance to get the same impedance of the original circuit?
If this would be enough I could still do everything with a 3PDT, which would be great especially because I already have it!

EDIT: Obviously I wouldn't be able to exactly double the values, I should do 1x10k replaced by 2x25k in parallel and so on...

Open Discussion / VOX Double Sound Fuzz vs BJTs
« on: December 11, 2018, 05:17:12 AM »
A long time ago ('96 maybe) a friend of mine borrowed a VOX double sound wah vintage that was sounding great, so I decided to copy the circuit and make a stand alone fuzz (at the time I couldn't find a wah inductor, so no point in replicating the wah...).
It came out a little nasty fuzz with no controls, just two BC238B and few other things. Now, after all this time, I found a VOX V847 broken for a few euros and fixed it and then I thought: let's build that little fuzz again, I still have the schematics (check attachment)!
And so I did but with MPSA18, that are also used in the newer VOX wah replacing the BC238B.
Since I was not really happy with the sound, or maybe it's just my memory failing, I decide to put in two BC238B as I did the first time.
After struggling a bit to find them (on EBAY) I checked the hfe and it's in the specs, so I put them in the circuit but it doesn't work.
What's puzzling me is that a BC238B as T2 doesn't work, really no signal at all, while as T3 together with an MPSA18 works but the sound is crap (and I've tried ten of them).
How come that 22 years ago it worked right away without even checking the transistors?

Open Discussion / Re: Bass Cab Sim (or speaker response)
« on: August 01, 2018, 05:57:02 AM »
In case someone else is interested, I found this nice tool in the Jensen web site:

Open Discussion / Re: Bass Cab Sim (or speaker response)
« on: August 01, 2018, 02:20:35 AM »
Hi All, thanks for you answers. I'm not going to gig with this, and if I were going to record I could use some plug in, that wouldn't be a problem. I'm only playing at home for the fun of it and I would like to have some nice sound through a small headphone amp, like I do with my guitars, something portable that doesn't require a PC nearby, like a little (!!) pedalboard.
After I posted this question I found some frequency response of some bass cabinet speaker, and unsurprisingly it's not very different from the one used in the Condor cab sim. A bit lower peak frequencies, a little less notch around 400Hz, it shouldn't be difficult to get close to it, but I think first I might try the bass directly in the Condor and see how it goes.
But first I need a bass :D :D

Open Discussion / Bass Cab Sim (or speaker response)
« on: July 31, 2018, 10:56:58 AM »
Dear All,
I'm thinking about getting me a cheap kit bass guitar just to have some fun. With this idea obviously comes the following: what pedal can I build for it ;) ;) (but this is not my question)?
I don't have an amp, I only have a Condor cab-sim for my guitars that works wonderfully, so, first thought was, what if I play a bass through my Condor? But, hey, I still have two PCBs for the Condor, what if I adapt the Condor to the different frequency response of a bass amply speaker? It shouldn't be too difficult, but I don't know where to find a frequency response to start from.
Any suggestions?


I'm working on an idea which is probably not so original, that involves a Condor with a completely different frequency response, a wah V847 and maybe a Fuzz directly copied from the Vox Double Sound. Well, actually two wahs  ::) .
I bought a V847 on ebay as "DEFEKT" for 30€. Someone tried to replace the pot with a standard 100k linear that didn't fit in the enclosure. Pot replaced, wah is as new, so now I can use it to experiment then keep it as is, keep it modded or sell it 8).

@ dan.schumaker: I'm very interested in your Binson in a 1590A, keep us updated!

Open Discussion / Re: Discrete Opamps... the future of tone.
« on: May 14, 2018, 01:51:32 AM »
The audiophiles should have a look at the hardware used to master music in studios, especially the speakers. Does it really make sense to listen to music with equipment for thousands of $ when it's been produced and mastered with monitors that cost a few hundred bucks?

Open Discussion / Re: DIY oscilloscope kit build report
« on: March 29, 2018, 07:41:55 AM »
I don't know if anyone was aware of this, I wasn't until today:
Unfortunately I ordered my scope from one of these shops, I hope after waiting more than 2 months I don't get a fake one. After not receiving anything for two months I agreed just yesterday to get a second one shipped, had I seen that forum before I would have asked for a refund.

Open Discussion / Re: NMOD (new mini oscilloscope day)
« on: March 28, 2018, 01:32:24 AM »
I ordered one on mid-January and most likely got lost somewhere between China and Seul. I got a second one shipped right yesterday (without additional charges), I hope this one will make it to Germany, I desperately need it to fix some things. And unfortunately the things to be fixed are accumulating...

Build Reports / New build: ROG Omega
« on: March 27, 2018, 02:43:37 AM »
With all the amazing builds I've seen on this forum I'm almost reluctant to post this little circuit in a tiny 1590A, but it's really nice sounding. It's the ROG version of the Range Master, basically a FET based treble booster. Since the drain bias of the FET allows for different sounds, I made a small change to the circuit adding a second trimmer and a switch. In this way I'm able to dial in two different biasing for the FET and get a broader sound spectrum from the same effect without having to open the enclosure.
The PCB is (obviously) from OSHPark, while the first build was on Vero.
One day I'll be able to post audio or video samples, for the moment here's a couple of pictures:

Open Discussion / Re: DIY oscilloscope kit build report
« on: February 15, 2018, 03:03:44 AM »
Yep, I'm also waiting for the delivery (since one month...), I have several things to check or fix and this little scope might prove to be really helpful.

Open Discussion / Re: Custom Ear Plugs?
« on: February 07, 2018, 02:19:19 AM »
Etymotic here as well. I use(d) them in rehearsal and being a drummer they definitely improved my life. If I remember correctly I have the -15dB filters, which I would recommend also for concerts.
My last bassist had them as well.
I would say, if you look for quality products you'll never regret it, really well spent money. It's incredible how much impact acoustic fatigue can have.


So of course, some of our best and brightest HAVE brought it up in the past  ;D

Interesting read, thank you!

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