volume control balanced line
in [Live Sound]
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From: Phil Allison on 19 Jan 2007 02:27 "Snappy" >>> I built a mini DI-box into an electric guitar to change unbalanced into >>> balanced and to reduce the impedance significantly. Works like a charm, >>> very fine sound and I'm able to go directly into a mic.preamp. Just >>> advantages so far. But now I miss the possibility to alter the volume on >>> the guitar, >> >> >> ** Why did you remove the original volume control on the guitar and why >> not put it back ? >> >> There is a lot you have not explained. > > > In order to keep the lead from the pick up as short as possible and to > avoid putting in another component in the chain that might affect the > quality of the signal, I removed all the controls in the guitar. ** How utterly absurd. Put the volume pot back where it was - fuckwit. This cretin is like the fool who cuts of his leg and then complains he cannot walk. ....... Phil
From: TimPerry on 19 Jan 2007 09:09 Snappy wrote: > Geoff schreef: >> asdf wrote: >>> Hi all, >>> >>> forgive me if this has been asked before: >>> >>> is it possible to place a vol. pot meter in a low impedance (1K, >>> microphone level), balanced line. It should be a stereo pot.meter in >>> order to be able to attenuate both lines simultaneously, but I'm >>> puzzled about its value. >>> Any ideas? Thanks a lot, >> >> Not something that would normally be done. What is your purpose, >> and what is the mic working into ? >> >> geoff > > Thanks so far, it would have been wiser to explain what is the reason > for asking. > > I built a mini DI-box into an electric guitar to change unbalanced > into balanced and to reduce the impedance significantly. Works like a > charm, very fine sound and I'm able to go directly into a mic.preamp. > Just advantages so far. But now I miss the possibility to alter the > volume on the guitar, hence my question: how to put a vol.pot meter > into a bal.-low impedance line. > Thanks again, > > Arie you should have 3 conductors on the cable from the transformer to the jack: shield, high, and low. place an audio taper pot across high and low. cut the high wire that leads to the jack and solder to the wiper of the pot. solder a ground wire from the shell of the pot to the shield wire. the volume should increase when you turn the pot clockwise. if not move the low wire (from the jack to pot) to the opposite terminal. if you use a multi-turn pot you can label the pointer up to 111. :)
From: TimPerry on 19 Jan 2007 09:46 Phil Allison wrote: > "TimPerry" > >> >> you should have 3 conductors on the cable from the transformer (or active DI output) to the >> jack: > > > ** Hey - spoil sport !!! >
From: asdf on 19 Jan 2007 11:41 TimPerry schreef: > Snappy wrote: >> Geoff schreef: >>> asdf wrote: >>>> Hi all, >>>> >>>> forgive me if this has been asked before: >>>> >>>> is it possible to place a vol. pot meter in a low impedance (1K, >>>> microphone level), balanced line. It should be a stereo pot.meter in >>>> order to be able to attenuate both lines simultaneously, but I'm >>>> puzzled about its value. >>>> Any ideas? Thanks a lot, >>> Not something that would normally be done. What is your purpose, >>> and what is the mic working into ? >>> >>> geoff >> Thanks so far, it would have been wiser to explain what is the reason >> for asking. >> >> I built a mini DI-box into an electric guitar to change unbalanced >> into balanced and to reduce the impedance significantly. Works like a >> charm, very fine sound and I'm able to go directly into a mic.preamp. >> Just advantages so far. But now I miss the possibility to alter the >> volume on the guitar, hence my question: how to put a vol.pot meter >> into a bal.-low impedance line. >> Thanks again, >> >> Arie > > you should have 3 conductors on the cable from the transformer to the jack: > shield, high, and low. place an audio taper pot across high and low. cut the > high wire that leads to the jack and solder to the wiper of the pot. solder > a ground wire from the shell of the pot to the shield wire. > the volume should increase when you turn the pot clockwise. if not move the > low wire (from the jack to pot) to the opposite terminal. > if you use a multi-turn pot you can label the pointer up to 111. :)> Thanks a bunch, this pretty much answered my question. Nice to discover there are not only termites in this group. Ciao, Arie
From: Geoff on 19 Jan 2007 18:40
Snappy wrote: > Phil Allison schreef: >> "Snappy >> >>> I built a mini DI-box into an electric guitar to change unbalanced >>> into balanced and to reduce the impedance significantly. Works like >>> a charm, very fine sound and I'm able to go directly into a >>> mic.preamp. Just advantages so far. But now I miss the possibility >>> to alter the volume on the guitar, >> >> >> ** Why did you remove the original volume control on the guitar and >> why not put it back ? >> >> There is a lot you have not explained. >> ........ Phil > > In order to keep the lead from the pick up as short as possible and to > avoid putting in another component in the chain that might affect the > quality of the signal, I removed all the controls in the guitar. > Hope that helps, > It all seems incredibly misguided. What makes your requirements so stringent that what is good enough (if not actually necessary) for everybody else, is not good enough for you ? And the whole concept of getting such a pure guitar signal into a mic preamp also goes totally against what everybody(?) elle tries to acheive, where the overall sound includes and amp and speakers. You will likely be getting such a useless signal that after your mic preamp you will then need to severely butcher the signal in order to get something actually usable - which makes the whole excersize just a little bit pointless. geoff |