Need advice with making an electric violin... :) - Page 2 - diyAudio
Go Back   Home > Forums > Live Sound > Instruments and Amps

Instruments and Amps Everything that makes music, Especially including instrument amps.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 24th January 2004, 11:45 AM   #11
Banned
 
Join Date: Nov 2002
Location: Adelaide, Australia
Send a message via MSN to SkinnyBoy
Quote:
Originally posted by Jarno
By the way, in lots of shops where they sell musical instruments they have piezo transducers for guitars. I think these have a higher fidelity than your average cracked open piezo buzzer.

ok.. thanx for that.. how hard would it be to test a normal violin with a piezo?? not that I have access to a violin.. lol
  Reply With Quote
Old 24th January 2004, 11:48 AM   #12
diyAudio Member
 
Join Date: Sep 2002
Location: Rosmalen, The Netherlands
Default Testing

Not very hard I suppose, just slacken the strings a bit, slip the piezo electric disc under the bridge and a fiddling you go.
__________________
Oemptempa petoempetapap
  Reply With Quote
Old 24th January 2004, 11:49 AM   #13
Banned
 
Join Date: Nov 2002
Location: Adelaide, Australia
Send a message via MSN to SkinnyBoy
yeah.. great.... lol got a schematic for a preamp suitable to plug a piezo pickup into a line input on an amp? lol
  Reply With Quote
Old 24th January 2004, 11:55 AM   #14
diyAudio Member
 
Join Date: Sep 2002
Location: Rosmalen, The Netherlands
I haven't got a schematic of this, but perhaps on www.harmonycentral.com or perhaps Rod Elliott can help you out?

Greetings,

Jarno.
__________________
Oemptempa petoempetapap
  Reply With Quote
Old 24th January 2004, 12:02 PM   #15
Banned
 
Join Date: Nov 2002
Location: Adelaide, Australia
Send a message via MSN to SkinnyBoy
Quote:
Originally posted by Jarno
I haven't got a schematic of this, but perhaps on www.harmonycentral.com or perhaps Rod Elliott can help you out?

Greetings,

Jarno.

ok thanx I'll talk to "daddy" some time soon... lol maybe tomorrow ("daddy" as in the girls dad... not mine.. lol)
  Reply With Quote
Old 24th January 2004, 12:07 PM   #16
Banned
 
Join Date: Nov 2002
Location: Adelaide, Australia
Send a message via MSN to SkinnyBoy
and.. what is the frequency range of a violin? I mean, what range would a speaker have to cover connected to an electric violin? thanx lol
  Reply With Quote
Old 24th January 2004, 10:51 PM   #17
diyAudio Member
 
Join Date: Sep 2002
Location: Rosmalen, The Netherlands
Default Frequency range

I don't know the frequency range but I suppose that a "ordinary" hifi loudspeaker setup (2-way) will do.
__________________
Oemptempa petoempetapap
  Reply With Quote
Old 25th January 2004, 01:34 PM   #18
Banned
 
Join Date: Nov 2002
Location: Adelaide, Australia
Send a message via MSN to SkinnyBoy
Default Re: Frequency range

Quote:
Originally posted by Jarno
I don't know the frequency range but I suppose that a "ordinary" hifi loudspeaker setup (2-way) will do.

yes.. but I was wondering about the low end frequency... because I am thinking about making a stand alone violin amp and speaker... lol
  Reply With Quote
Old 12th March 2004, 08:51 AM   #19
diyAudio Member
 
Le Basseur's Avatar
 
Join Date: Apr 2003
Location: Croatia
Hi guys,
I'm currently building a dedicated violin combo amp for a friend who electrified his instrument by using a Fishman piezo transducer.Since I'm a pro violin player myself (I do this for a living) and I'm also building tube equipement,both high-end and instrument amps and boxes,I'd have some comments on your thread.
First of all,the "all-plastic" body,no matter it's a full or a hollow one,is a undesirable idea.Moulding/shaping all kind of composites is a real PITA and the last thing you'd want is to become frustrated because such a construction doesn't fulfill the minimal requests regarding strenght when you tune your instrument.If you take a look all over the 'Net,you'll see that dedicated brands use a central reinforcement piece,going by the head of the violin to the very bottom.Yamaha Silent Violins are a good example,though I deeply HATE those Yamaha products for their poor finish,unstable mechanics and very noisy electronics.And yes,they're way too overpriced for what they offer!
(I appologise for being so radical about a line of products wich may be appreciated by some of you).
If you want some construction details,please try Zeta electric violins.These are the best series-produced el.violins available.
Also,you'd might want to take a look on some electric violins made by some Scottish luthier (I forgot the name,but you'll find it by "googling" a little).
Regarding the piezo transducers,I'd say you have to go with a dedicated product,not a "general-purpose" one for the sake of accuracy and frequency bandwidth.A violin's bandwidth is not limited to only a few KHz's,as some might think,but it's going way up 'till the ultra-sonic range.Of course,on an electric or elctrified instrument you don't get the same harmonic distribution as heard on an acoustic one,but still there are some strong harmonic upper components up to,say,25 KHz.
I have to say some things about choosing the right speaker for this application.I've tried almost all commercial amp for acoustic violins and I drawed my own conclusions,despite the overly-hype claims and brand's advertisments.There are two issues to remind:
1.As some of you might know already,an amplified violin has a "bump" around 270 Hz (this is the low "C" note on the G string),wich is very hard to tame using a classic 3-way EQ.
Strangely enough,but it seems that no commercial brand is aware on that (Yamaha claims their solely AS60-112T acoustic amp is intended for violin,viola AND cello!).In other words,without having a parametric mid or a fixed mid working precisely in that area,you'd have a very hard time to accomplish a good result.
This is one of the main reasons I accepted to go "the hard way" (building a violin combo for my friend) instead of just buying a commercial product.
2.Because of the more extended upper range required in a violin amplification,most brands use a "dedicated bass-middle driver" in conjunction with a dome tweeter,thus making a 2-way system.
(....no,there is NOT a bi-amping approach,only a cheap passive filter...).The filter network is set to work in the most un-appropriate zone,this is right in the upper mids!,and it's literrally killing your tone because of the phase-shifts that are occuring in such networks.
For my project,I used a 12'' full-range driver,the kind wich has a whizzer-cone.Apparently,nothing special,(most brands are manufacturing this kind of drivers),but it'll ensure an overall uniformity on both freq. AND phase.
The required freq.bandwidth it's not an issue,since the lower G open string has a freq.of about 190-200 Hz,depending of the overall tuning of the instrument,so every fair driver should be able to handle with this.
End of rant,
Le Basseur
__________________
"You're smart enough not to think I'm a fool"
Ol'Romanian proverb
  Reply With Quote
Old 12th March 2004, 09:23 AM   #20
diyAudio Member
 
Join Date: Sep 2002
Location: Rosmalen, The Netherlands
Hello Le Basseur,

It's great that you've "revived" this thread, because I think it's an interesting topic and the "electrification" of acoustic instruments (apart from guitar) is stil very much "uncharted" territory (if you compare it to guitar).
I haven't got a great deal of time right now (I'm at work) so I will read your post more thoroughly later on, but one thing springs to mind. If the low frequency extension is of no concern, why did you use a 12" driver? Even with a whizzer cone these go only up until about 5kHz max., at least nowhere near 25kHz. You could try the Jordan JX-92 aluminium full range driver, but I don't think that driver reaches 25kHz, more like 15kHz.
Maybe a coaxial 10" driver like SEAS makes them could be the solution.

Regards,

Jarno.
__________________
Oemptempa petoempetapap
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Advice for making interconnects FSHZ:42 Everything Else 7 10th June 2009 07:23 PM
What to build - Electric Violin Combo Amp? error401 Instruments and Amps 7 5th September 2008 10:30 PM
I hate violin. tade Music 43 14th June 2007 04:26 PM
Old violin restoration Panicos K Instruments and Amps 2 2nd November 2006 02:06 PM
Any information about diy violin? jelou Instruments and Amps 1 23rd June 2004 05:38 PM


New To Site? Need Help?

All times are GMT. The time now is 06:58 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2