kodiakblair Posted August 31, 2017 Posted August 31, 2017 The Harley Benton Bass Expander says it works off phantom power and I thought it did till it stopped working Opening up the box I found a 9v connected so I swapped mixer incase the mixer wasn't kicking out enough juice. The Alesis has 4 XLR so should easily power a 9v pedal.But it didn't Returned the unit to Thomann and yesterday I got the exact pedal back (matching serial numbers) with a 9v fitted again. I'm getting the same results. When connected to mixer with no battery the lights are dim and zero volume. It works great using dc or the battery. Thinking it may need a battery in place to complete a circuit I stuck a dead 9v in but that didn't work,no lights or sound. Anybody came across phantom power that needs a battery to work ? I'm giving the pedal the benefit of the doubt as the original mixer was a wee Behringer and may not have been up to scratch. What's your thoughts folks, faulty mixer or faulty pedal ? Quote
EBS_freak Posted August 31, 2017 Posted August 31, 2017 Sounds like a dodgy pedal. You tried swapping XLRs? Quote
kodiakblair Posted August 31, 2017 Author Posted August 31, 2017 Aye. Swapped the cable and tried all 4 channels. Got same result,the bloody thing don't work. Oh well now starts another round of email sending Quote
pete.young Posted August 31, 2017 Posted August 31, 2017 Phantom power is frequently 48V DC - is it possible you were over-powering it, and it has some kind of voltage protection circuit? Quote
kodiakblair Posted August 31, 2017 Author Posted August 31, 2017 Cheers pete. The spec says it needs 40mA max to power it, the recommended power supply is rated 500mA. I'm trying to find specs for the Hartke Bass Attack as it works prefectly with both mixers via phantom power. I'm more confused than normal Quote
Dood Posted August 31, 2017 Posted August 31, 2017 [quote name='kodiakblair' timestamp='1504204380' post='3363424'] Cheers pete. The spec says it needs 40mA max to power it, the recommended power supply is rated 500mA. I'm trying to find specs for the Hartke Bass Attack as it works prefectly with both mixers via phantom power. I'm more confused than normal [/quote] The manual suggests that the DI switch must be in the GND position for Phantom Power to work. I'm sure you'll have tried it, but in case you haven't.. Quote
bazzbass Posted September 4, 2017 Posted September 4, 2017 [quote name='dood' timestamp='1504209445' post='3363468'] The manual suggests that the DI switch must be in the GND position for Phantom Power to work. I'm sure you'll have tried it, but in case you haven't.. [/quote] lol what if you get a Ground loop? sorry folks, show's cancelled lol Quote
Dood Posted September 4, 2017 Posted September 4, 2017 [quote name='bazztard' timestamp='1504500303' post='3365219'] lol what if you get a Ground loop? sorry folks, show's cancelled lol [/quote] Ha ha!! It's not just this pedal that requires switch to be in said position, I've seen it on others too. It's necessary for Phantom Power to work Quote
dave_bass5 Posted September 4, 2017 Posted September 4, 2017 Yep, ive been caught out with this with my VTBass DI a few times. Quote
kodiakblair Posted September 8, 2017 Author Posted September 8, 2017 Heard back from a few other owners. Nobody's unit works via phantom power !! The pedal now sells "by request only" until the factory sorts this out. The £20 refund buys plenty of batteries so I'm not complaining too much Quote
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