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Discussion in 'Pickups & Electronics [BG]' started by damos, Aug 10, 2012.
What's the tone difference between the J and the new JAX from EMG ?
Any users here ?
Its the same as JVX without the pole pieces..
The JAX and JVX are two different pickups.
The J uses ceramic magnets and the old preamp. The X series has a new preamp. The JAX uses an alnico 5 bar magnet for a more vintage warmer tone. The JVX uses ceramic magnets with exposed steel poles, and the new preamp.
U are sure the jvx use ceramic ?
They do not list them as using alnico. The V means "vintage" which is what they call exposed poles. The A in JAX means Alnico.
Also, EMG does not make any pickups with rod magnets, only bar magnets. They talk about that in their catalog:
So the JVX uses steel poles and ceramic magnets. The JAX uses an alnico bar magnet as the blade.
You can also see this in the P, which is ceramic, and the PA which is alnico. Neither of those has exposed poles because the magnet is a blade.
In Ed Friedland Review in GW :
The JVXs stacked coils eliminate single-coil hum when using the pickups individually as well as the honky upper-midrange presence that some passive stacks accentuate. Non-vintage series EMGs use ceramic bar magnets, which produce an even attack, exert less magnetic pull on the string and contribute greatly to EMGs pure tone, but the classic Fender-style arrangement of two Alnico V pole pieces-one on each side of the string-gives the JVX a more percussive attack. It also gives the pickup the right look for the traditional-minded players.
That doesn't mean Ed is correct. EMG went out of their way to point out why they don't use magnets as poles; they pull the strings too hard. Steel poles charged by a bar magnet pull the strings far less. But they do use them for the exposed pole Strat pickups. So maybe they are.
To find out for sure, all you need to do is get one of those JVX pickups and a gauss meter and take a reading. If they are alnico rods, they will read 600-800 gauss at the poles. Most EMG pickups read about 300G.
On the exposed pole Strat models they mention on the website that they are alnico rod magnets. They don't say that with the bass models, except the JA and JAX which are bar magnets.
So maybe they are, and maybe they aren't. There's nothing better about having alnico rods for poles, especially in a modern design like EMGs. You either like the way the pickup sounds or you don't.
I send an Email to EMG to have a confirmation.
It's sure EMG JVX use CERAMIC and not Alnico
Difference in sound between Alnico and Ceramic ?
I think the EMG website has audio samples of these pickups.