Search found 585 matches

by Beate Ritzert
Tue Feb 04, 2020 10:59 pm
Forum: Solid-Body and Chambered or Semi-Solid Electric Guitars and Bass Guitars
Topic: CE marking for electric guitar
Replies: 6
Views: 616

Re: CE marking for electric guitar

I'd be surprised if the German instrument makers apply CE marking. That would actually individual procedures for every single instrument (if custom built). But i can ask, if You like.
by Beate Ritzert
Sat Feb 01, 2020 3:28 pm
Forum: Jam Session
Topic: It's Been a While
Replies: 11
Views: 697

Re: It's Been a While

My condolences and best wishes for you!

Beate
by Beate Ritzert
Fri Jan 31, 2020 5:58 pm
Forum: Tools and Jigs
Topic: about using an eggbeater drill
Replies: 13
Views: 849

Re: about using an eggbeater drill

That thread finally did inspire me to look for an old eggbeater drill (i was thinking about that a while ago) - the recent ones seem to be mostly toys. And it looks as if i was lucky - that one looks pretty decent, doesn't it? DSC_4251.JPG So, thanks for the posting, thanks for the inspiration. Now ...
by Beate Ritzert
Sat Jan 25, 2020 5:06 pm
Forum: Tools and Jigs
Topic: about using an eggbeater drill
Replies: 13
Views: 849

Re: about using an eggbeater drill

But You can also use it vertically as i did in a recent project - a recumbent bike seat:
DSC_4213.JPG
I used my chin to hold at the top. Or drilled really slow and used just my two hands.
by Beate Ritzert
Sat Jan 25, 2020 4:52 pm
Forum: Electronics
Topic: Low Impedance pickup - prototype
Replies: 20
Views: 6375

Re: Low Impedance pickup - prototype

The main reason why a currently not use them is that they are pretty large preventing from e.g, making hexaphonic humbucking pickups or very narow or very flat pickups. This seems to be better done with traditional low impedance pickup designs. From my prototype i conclude that the narrowst shape wi...
by Beate Ritzert
Wed Jan 15, 2020 6:21 pm
Forum: Tools and Jigs
Topic: about using an eggbeater drill
Replies: 13
Views: 849

Re: about using an eggbeater drill

Not an eggbeater, not old but a chinese copy of an old 2 gear drill. Quality "chinese prejudice", i.e. not very usable in fast gear, but really nice in the slow gear, takes normal drill bits. I have already used it for pickup winding (actually bought it for that purpose...)
DSC_4244.JPG
by Beate Ritzert
Fri Dec 06, 2019 6:40 pm
Forum: Archtop Guitars and Bass Guitars
Topic: Archtop as a concept for acoustic bass guitar?
Replies: 23
Views: 7385

Re: Archtop as a concept for acoustig bass guitar?

Please let me add a remark: to *me*, luthery is something different from attachin some pre finished neck to a pre finished body (although i am well aware that there are business situation that imply such strategies, and although i have mostly been using pre finished necks in my project as well). I a...
by Beate Ritzert
Thu Dec 05, 2019 7:04 pm
Forum: Archtop Guitars and Bass Guitars
Topic: Archtop as a concept for acoustic bass guitar?
Replies: 23
Views: 7385

Re: Archtop as a concept for acoustig bass guitar?

Modding something like that would be not an option: https://www.thomann.de/intl/harley_benton_hb_35_bk_vintage_serie_b_stock.htm ? BTW: i would expect this would simply sound like an ultra short scale solid body, as it mostly does as a guitar. Another idea - i don't know if this guy is shipping to t...
by Beate Ritzert
Sat Nov 09, 2019 5:29 pm
Forum: Electronics
Topic: Increasing magnetic strength of a pole piece
Replies: 8
Views: 2020

Re: Increasing magnetic strength of a pole piece

A P90 like pickup usuallyhas adjustable pole screws or at least easil may have. These can be used quite effectively to compensate for differences in the string response, even relatively large ones. I had to make use of this a lot especially in my problem child archtop. Of course it should also be po...
by Beate Ritzert
Thu Nov 07, 2019 9:30 pm
Forum: Archtop Guitars and Bass Guitars
Topic: Archtop as a concept for acoustic bass guitar?
Replies: 23
Views: 7385

Re: Archtop as a concept for acoustic bass guitar?

There is no reason why a 25" scale archtop wouldn't work as long as you could find a way to employ a piezo pickup effectively. You can even go with magnetic pickups if ou use thick shortscale strings like the GHS Brite Flats. These can be tuned down easily by three semitones which compensates for t...
by Beate Ritzert
Wed Nov 06, 2019 8:19 pm
Forum: Archtop Guitars and Bass Guitars
Topic: Archtop as a concept for acoustic bass guitar?
Replies: 23
Views: 7385

Re: Archtop as a concept for acoustig bass guitar?

Well, here is a 1st rough sketch of the idea as a starting point of thinking. I'm still trying to enlarge the lower part a bit, but i do not see many possibilities. BTW - the lenth of that part is that of a 16.5" or 17" archtop guitar. Skizze_0001.b.jpg Sound idea: more like a deep baritone guitar -...
by Beate Ritzert
Wed Nov 06, 2019 2:11 pm
Forum: Archtop Guitars and Bass Guitars
Topic: Archtop as a concept for acoustic bass guitar?
Replies: 23
Views: 7385

Re: Archtop as a concept for acoustig bass guitar?

Thank You very much for those hints. Today i drew the 1st sketches on paper. My idea is trying to transfer the ideas of the Sharkfin bass to the archtop context. Which means multiscale 78/76 cm and a asymmetrical shape in order to get the position of the bass lying on the right leg comfortable. Widt...
by Beate Ritzert
Tue Nov 05, 2019 9:01 pm
Forum: Archtop Guitars and Bass Guitars
Topic: Archtop as a concept for acoustic bass guitar?
Replies: 23
Views: 7385

Re: Archtop as a concept for acoustig bass guitar?

Wow, 5 years later. But there is too much going on around me, more than i can handle. And too many other ideas were waiting to be realized "quickly". Although my other archtop bass is still on the bench, not even fully carved.... But there is something going on.: next spring a challange will start i...
by Beate Ritzert
Sun Oct 13, 2019 4:00 pm
Forum: Electronics
Topic: What makes a pickup hot?
Replies: 7
Views: 1339

Re: What makes a pickup hot?

I own a pair of "humbucker for metal". These are wound to a DCR of 14k which means "many windings, pretty high output". They have fat ceramic magnets and thin blades of steel. Which should mean a relatively small inductance. Accordingly the treble resonance is pretty high, 4.5 kHz at 680 pF load. Th...
by Beate Ritzert
Thu Oct 10, 2019 5:53 pm
Forum: Electronics
Topic: Low Impedance pickup - prototype
Replies: 20
Views: 6375

Re: Low Impedance pickup - prototype

Well, if such links are ok, here two links to a german forum where the theory is explained as well (all with references to te MEF but independent) and with a few interesting experiments which are not shown in the MEF discussion. One is about high output variants of the principle, AFAIR the 2nd threa...
by Beate Ritzert
Tue Oct 08, 2019 3:03 pm
Forum: Electronics
Topic: Low Impedance pickup - prototype
Replies: 20
Views: 6375

Re: Low Impedance pickup - prototype

If it was not against the policy of this forum, i would have posted to links into other forums where that stuff is being discussed at length. But let me try to describe what's going on: imagine a traditional magnetic pickup. its 5000-10000 windings lead to the well known behaviour - relatively large...
by Beate Ritzert
Sat Sep 21, 2019 5:51 pm
Forum: Electronics
Topic: Low Impedance pickup - prototype
Replies: 20
Views: 6375

Re: Low Impedance pickup - prototype

This is a really interesting thread. I was at the namm show in '06 ( or was it '07...?) when I saw/heard the aluma-tones for the first time. Have been interested in this stuff ever since. Is the output V of your prototype comparable to a regular high inductance pickup? The one You quoted is a compe...
by Beate Ritzert
Thu Aug 29, 2019 3:56 pm
Forum: Electronics
Topic: Low Impedance pickup - prototype
Replies: 20
Views: 6375

Re: Low Impedance pickup - prototype

Just another use of that approach: hum cancellation coils. A single closed loop of thick wire (or maybe a few) and a suitable Talema AX to transform the level of the noise induced into the loop. The products of loop area times turns of the transformer must match the loop area of all windings of that...
by Beate Ritzert
Wed Aug 21, 2019 11:46 am
Forum: Electronics
Topic: Low Impedance pickup - prototype
Replies: 20
Views: 6375

Re: Low Impedance pickup - prototype

Short research - Craig Anderton "Super Tone Control" tells me nothing - this seems to be an implementation of a SVF. It'll probably need a preamp stage to raise the signal level. Keep in mind that the treble resonance has to be thoroughly damped out to linearity with any guitar pickup. Unless You wa...
by Beate Ritzert
Tue Aug 20, 2019 7:43 pm
Forum: Electronics
Topic: Low Impedance pickup - prototype
Replies: 20
Views: 6375

Re: Low Impedance pickup - prototype

The pickup demands for a microphone amplifier, both regarding sensitivity as well as input impedance - which should not be larger than 2 kOhms in oder to damp the treble resonance. The latter is important - if undamped it could harm any tweeter. In these respects these príckups are very similar to t...