Help with intonation

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mikewest
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Help with intonation

Post by mikewest » Sat Sep 19, 2009 2:43 pm

Just purchased a Fender Boner bass 4 string fretless

It is fitted with D'Addario strings that are in good condition.

When sounding the D and G strings at the 12th fret they are both flat.

I have adjusted the saddles to try to compensate but this has not brought the tunung in.

Can I presume the strings are either the wrong length or the wrong thickness?

If so what is the correct spec for the strings I need please.

(I have some Fender F-80 flats and also D'Addario ECB81 regular light gauge long scale).

I also have a Fender Aerodyne, what flats are best for this??

Cheers

Mike

foal30
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Re: Help with intonation

Post by foal30 » Sat Sep 19, 2009 9:35 pm

No I would not presume it is the strings.
that is not too say it is not of course :)

what is the tuning like above the 12th fret on both the D and G strings?
does it steadily "get flatter"?
how "good" was the de-fret? any obvious signs of extra filling or conversely "low points"?
historically it could be accurate to say Fender Bass have dead spots, or in fact any wooden, stringed instrument.

without having it to play it's a hard cop doing the random internet punt... I would recommend visiting Adrian/Ash Customworks... or whatever luthier of choice is your bag.

FWIW I have a defret Boner Jazz with D'Addario Chromes and it's a winner of a Bass even with me playing it. I assume you have the TM special from approx 2 weeks ago?

foal30
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Re: Help with intonation

Post by foal30 » Wed Sep 23, 2009 11:52 am

how is this situation unfolding Mr West?

please keep us in the loop etc, thanks.

irvinz
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Re: Help with intonation

Post by irvinz » Thu Sep 24, 2009 11:46 pm

i say the boner has not stayed up. u should sell it to me for not much =)
ex- Music Planet Queen Street Resident Bass expert wannabe

now residing at vinzmusic.com

mikewest
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Re: Help with intonation

Post by mikewest » Tue Sep 29, 2009 6:43 pm

Thanks guys!!!

Sadly work and family get in the way of me doing anything.

The Boner looks great and I look forward to using it soon !!!!

Cheers

Mike
www.mikewestgatesound.co.nz

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timi
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Re: Help with intonation

Post by timi » Wed Sep 30, 2009 5:39 pm

mikewest wrote:fretless
mikewest wrote:12th fret
I'm confused 8)

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john
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Re: Help with intonation

Post by john » Wed Sep 30, 2009 8:02 pm

timi wrote:
mikewest wrote:fretless
mikewest wrote:12th fret
I'm confused 8)

lol..
Putting one of these as the twelfth fret can be handy while doing intonation on a fretless

Image

mikewest
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Re: Help with intonation

Post by mikewest » Mon Oct 05, 2009 4:09 pm

Yep I have lots of those but my original question about the correct string length still applies.

My Fender Aerodyne has good intonation but not flat wounds.

Would love to get the Fender Boner sorted out as it needs to be loved!!

Mike

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lettsbasses
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Re: Help with intonation

Post by lettsbasses » Tue Feb 05, 2013 4:41 am

String length (the actual length of the string) does not mean anything. The intonation is down to the length between the nut and saddle. The length betwee nut and 12th fret should be the same length as from 12th to saddle. There is a small difference involved to compensate for string stretching which happens when you pussh down on the string to fret. If a string is flat at the 12th fret the saddle needs to be moved towards the nut, thus shortening the distance between the 12th and saddle. If the saddle adjust is max'd out and the string is still flat (you must retune after every adjustment before retesting by the way) the bridge is in the wrong place or the neck is not original and has the wrong scale length and you have to re-position the bridge further toward the neck. If the string was sharp I would suspect high action to be the problem.

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