1974 Suitcase 88 pickup rail

[james]

Can anybody explain what the extra wiring is at the end of the pickup rail?

[Tim W]

It is a high pass filter network for the last group of keys (a little more than an octave). It is used to filter out the thunk/clunk sound of the hammer hitting the upper tines.  The low frequency thunk is more pronounced in that upper octave, so it was needed to filter it out.  Having the extra pickups and the filter network in an 88 changes the overall pickup network slightly enough that it makes an 88 sound a little different than 73 note pianos- 88s are often not quite as bright in the mids and upper mids.

Tim
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