Graphtech Hexpander and NoName piezo saddles

Started by mahabresq, August 30, 2011, 03:44:27 PM

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mahabresq

Do I understand that Graphtech Hexpander will work with each piezo bridge which has a separate output for each string? I have a NoName piezo bass bridge that has summed piezo signal, but I think it is possible to modify it and isolate each string. It's looks like this

Elantric

#1
QuoteDo I understand that Graphtech Hexpander will work with each piezo bridge which has a separate output for each string?


Correct -


Same concept holds true if you wanted to use a RMC Polydrive preamp instead - for lower noise (lower hisss!) than Graphtech hexpander.
RMC PolyDrive II (For External use)
http://www.midi-classics.com/p14058.htm


RMC PolyDrive IV (For Internal installation)
http://www.midi-classics.com/u/u14056.htm
http://stores.soundislandmusic.com/-strse-490/RMC-Poly-dsh-Drive-IV-Preamp/Detail.bok


RMC PolyDrive I (For smallest 13 pin Internal installation)
http://www.edroman.com/parts/rmc_midi.htm



But not all Piezo saddles are equal.

The best are RMC which have minimum crosstalk.

mahabresq


NZFruitfly

Just used the same bridge, and the Ghost Hexpander. Once you have separated the outputs from the bridge and connected them to the hexpander, it works. Had a little issue with crosstalk between the strings, but filing down the saddles sorts that. BTW the piezo output from the Hexpander only installation using the Mag/Piezo pin 7 harness actually sounds very good, no need for the Acciustiphonic Pre.

Good luck

80Hz

I just used the same bridge you showed above, but 5 string version.  I paid $35 bucks for it and it's actually working a little better than my RMC and my Ghost setups.  It's on par with my best Roland GK-3B internal setups which I've always preferred to the peizos.  The output is really hot to my GR-55, had attenuate the gains down to like 18-25.  But it's tracking well with minimal crosstalk.