[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Date Index][Thread Index][Author Index]

RE: Expression pedal Question



Title: RE: Expression pedal Question

>>In the manual however it says you must use
a Roland Ev5 or Boss FV300 or risk damage to the unit.  Now this seems
like an empty scare tactic to make you buy roland gear but is there any
possibility that you could harm a device with an improper expression pedal?<<

kevin- didn't see anyone else reply to this yet.... there are some expression pedals that are different to other expression pedals.

to be honest, I don't even know what the accepted standard is for these things, despite being an engineer & despite having probably a dozen expression/volume pedals & a dozen devices that use them. but there's an "obvious" approach that's been pretty widely adopted, with line-6 & "moog music inc." (i.e. not bob) being the only dissidents.....

are you able to handle a stereo-jack with wires coming out of it, & a voltmeter? if so, you could work out whether the exp. socket on the vf-1 is wired like I expect it would be (knowing boss....). you'll probably find that the jack's sleeve is grounded (measure to the chassis of the vf-1) & that the tip is at 5V. whatever you send back to the unit on the third (ring) connection has to be between these two voltages.

but you need to make sure that the pedal isn't able to ground the 5V connection..... this could happen if you were to use a line-6 expression pedal where the tip & ring are reversed.

the other thing to bear in mind is that some devices are set up so that the full range of expression is obtained with a small change in voltage, while some pedals are actually volume pedals pressed into service as exp. pedals & their travel goes from nothing to full-on.

now, I can't believe that boss would manufacture something wherein either scenario would finish off the box completely.... but nonetheless, their imprecations are not to be taken lightly. & the fv300 will probably last longer than the cheap shit I buy (zoom, proel &c) simply because it's got "boss" written on it.

duncan.



***************************************************************************
CONFIDENTIALITY NOTICE

The contents of this e-mail are confidential to the ordinary user
of the e-mail address to which it was addressed, and may also
be privileged. If you are not the addressee of this e-mail you may
not copy, forward, disclose or otherwise use it or any part of it
in any form whatsoever.If you have received this e-mail in error,
please e-mail the sender by replying to this message.

It is your responsibility to carry out appropriate virus and other
checks to ensure that this message and any attachments do not
affect your systems / data. Any views or opinions expressed in this
e-mail are solely those of the author and do not necessarily
represent those of MTV Networks Europe unless specifically stated,
nor does this message form any part of any contract unless so stated.

MTV reserves the right to monitor e-mail communications from
external/internal sources for the purposes of ensuring correct
and appropriate use of MTV communication equipment.

MTV Networks Europe
***************************************************************************