Heathy Posted August 2, 2022 Share Posted August 2, 2022 Hi All A few months ago I purchased an American Jazz Bass 5-string. It's great apart from there being a notable drop in volume when both volume pots are full on. I have had a number of jazz basses in the past and this has never been an issue. I recently put in a new wiring loom with a VBT configuration (personal preference), but the issue is still the same with the balance pot in the centre notch. Any movement to either side and the signal strength returns. Any ideas as to what might be causing this? Cheers Quote Link to comment Share on other sites More sharing options...
KiOgon Posted August 2, 2022 Share Posted August 2, 2022 Pickups are out of phase, swap one pair of wires and try it, or something on the controls is shorting out. 2 Quote Link to comment Share on other sites More sharing options...
blisters on my fingers Posted August 2, 2022 Share Posted August 2, 2022 I thought this was common on VVT Jazz basses, both pickups on full you get a slightly mid scooped sound with what is, or which sounds like, slightly less volume. Pretty sure I've read on here or similar forums that some players think this scooped sound is a desirable feature of a Jazz bass. Suppose it depends on how you define 'notable', if the volume is dropping like a car off a cliff then something else is er... wrong 😀 Also with my Jazz you would probably only notice at gig volume 2 Quote Link to comment Share on other sites More sharing options...
fingerz Posted August 3, 2022 Share Posted August 3, 2022 I've played a jazz bass almost solely for years. Any single coils wired in parallel will have a slight 'drop' well turned up full, but for me it's more of a 'difference' in tone than a notable drop in volume, especially when compared to the bridge pickup. If it's really tiny then I'd say it's the nature of the bass but if it's really perceivable then I'd say it's something that isn't quite right, especially as it came from the factory doing it. Do you have single coils or their noiseless pickups? Maybe one of them has an issue. Installing a blend pot might make the overall output slightly quieter but again wouldn't present the issue you describe still happening. Being as you've changed all of those pots then the only thing it can still be is the pickups or an earth issue. 1 Quote Link to comment Share on other sites More sharing options...
MoonBassAlpha Posted August 4, 2022 Share Posted August 4, 2022 I'd say one pickup out of phase too Quote Link to comment Share on other sites More sharing options...
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