quick piezo pickup question

[tempus fugit]

Hey all;

I have a piezo bridge/pickup for my electric guitar. I plan to wire it to a
stereo jack, with one of the contacts for the magnetic pickups already in
the guitar, and the other for the piezo. If I am not using a stereo cord,
however, the piezo will just be grounded, since the ring connection will be
in contact with the sleeve of the cord. Will this damage the pickup in any
way (i.e, having the hot and ground connections shorted)? I don't see any
reason why it would, but I thought I should check before I destroy a $200
pickup.

Thanks

 

[JANA]

Since the pickup is a high impedance source and is a low voltage device, and
it is connected to the input of the amplifier, there is no way you can
damage it, unless you accidentally put a voltage source to it.

For mono on a 1/4 plug or jack, the tip and sleeve are used. For stereo, the
tip is left, the ring is right, and the sleeve is ground. For a plug that is
going to the input side, you can join the ring and tip to have mono to both
channels.

When making parallel connections, make sure that the source impedance is
high before directly making parallel connections as described here.


--

JANA
_____


Hey all;

I have a piezo bridge/pickup for my electric guitar. I plan to wire it to a
stereo jack, with one of the contacts for the magnetic pickups already in
the guitar, and the other for the piezo. If I am not using a stereo cord,
however, the piezo will just be grounded, since the ring connection will be
in contact with the sleeve of the cord. Will this damage the pickup in any
way (i.e, having the hot and ground connections shorted)? I don't see any
reason why it would, but I thought I should check before I destroy a $200
pickup.

Thanks

 

[Phil Allison]

"tempus fugit"

I have a piezo bridge/pickup for my electric guitar. I plan to wire it to
a
stereo jack, with one of the contacts for the magnetic pickups already in
the guitar, and the other for the piezo. If I am not using a stereo cord,
however, the piezo will just be grounded, since the ring connection will
be
in contact with the sleeve of the cord. Will this damage the pickup in any
way (i.e, having the hot and ground connections shorted)? I don't see any
reason why it would, but I thought I should check before I destroy a $200
pickup.

** You have nothing to worry about - piezos are not so easily damaged.

BTW

Consider having a basic FET pre-amp inside the guitar for the piezo - or
at least INSIDE the jack plug that goes to the guitar.

Can supply you a very simple schem on ABSE for the latter if you want.




......... Phil

 

[tempus fugit]

"tempus fugit"



** You have nothing to worry about - piezos are not so easily damaged.

BTW

Consider having a basic FET pre-amp inside the guitar for the piezo - or
at least INSIDE the jack plug that goes to the guitar.

Can supply you a very simple schem on ABSE for the latter if you want.




........ Phil

Sure Phil, thanks that would be great. You gave me some advice on SED as
well concerning an opamp pre for this same application. I actually have the
pickup now and I think I'll have a little more room in the guitar than I
thought, so I may be able to get a preamp in there. This will actually be
plugging into my homemade FX pedalboard switching unit, so it would be no
big deal just to mount it there also. There would definitely be an advantage
to having the pre on the guitar though, but I'd like to set things up so
that the V+ was coming from the pedalboard so I didn't have to be bothered
with batteries.

THanks

 

[tempus fugit]

Since the pickup is a high impedance source and is a low voltage device, and
it is connected to the input of the amplifier, there is no way you can
damage it, unless you accidentally put a voltage source to it.

For mono on a 1/4 plug or jack, the tip and sleeve are used. For stereo, the
tip is left, the ring is right, and the sleeve is ground. For a plug that is
going to the input side, you can join the ring and tip to have mono to both
channels.

When making parallel connections, make sure that the source impedance is
high before directly making parallel connections as described here.

K thanks for the info JANA.

 

[Phil Allison]

"tempus fugit"

Sure Phil, thanks that would be great. You gave me some advice on SED as
well concerning an opamp pre for this same application. I actually have
the
pickup now and I think I'll have a little more room in the guitar than I
thought, so I may be able to get a preamp in there.

** This " electric guitar " of yours - solid body or not ?




......... Phil

 

[tempus fugit]

Yes, it's a solid body.