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Limited 240v outlets
Daniel Martini:
Hello all! I have a quick question I can't seem to get a solid answer on. Basically I run sound for a lot of "on the fly" underground shows where the power is less than desirable. I have four Meyer Sound DS4P mid bass cabs that require 240v 20amp circuits and when I request said receptacle at the "venue" I see a lot of blank stairs... I've also requested a 50a range outlet to run to my spider box which of course takes care of this but that's met with more confusion and a strong no as well. So I'm left with 120v Edisons and generators (which aren't something a lot of these guys are willing to pay for).
So a solution in my mind would be a step up transformer but I wanted to get your opinions. Is that a good solution to lug around? If I did get one I'm not even sure where to look. All the transformers on eBay are for small electronics and are all euro plugs ...
Thank you in advance - Dan
Steve-White:
Run them on 120V.
John Roberts {JR}:
You will need robust 115v service
JR
Brian Jojade:
--- Quote from: Daniel Martini on December 06, 2022, 01:30:47 AM --- I have four Meyer Sound DS4P mid bass cabs that require 240v 20amp circuits
....
So a solution in my mind would be a step up transformer but I wanted to get your opinions. Is that a good solution to lug around? If I did get one I'm not even sure where to look. All the transformers on eBay are for small electronics and are all euro plugs ...
Thank you in advance - Dan
--- End quote ---
As Steve posted, you can run those speakers off of a 120v service. You should under most scenarios be able to drive 2 speakers off of a single 20 amp circuit, unless you're driving the subs stupid hard. In that case, one per circuit would be perfectly OK.
Since you can run them off of 120v a step up transformer gains you exactly nothing. In fact, there will be a percentage loss in available power because transformers are typically only about 95% efficient. You'd need 1 step up transformer for each speaker, as running 2 off of a single 20 amp circuit would be putting you pretty close to capacity even at continuous RMS, let alone peak.
It is pretty mind blowing that anything that considers itself a venue doesn't have some sort of higher current power available, but that's another discussion completely.
Daniel Martini:
--- Quote from: Brian Jojade on December 06, 2022, 02:22:21 PM ---
D'oh! God I must have read that spec sheet 100 times and missed that they were switching amps ha. Thank you guys! Will be running two per 20a circuit and i usually don't ever push them (they get honky quite easily).
And Brian in regards to your venue comment I wouldn't consider a lot of these places venues either haha. More like office spaces/warehouses real down n dirty stuff .
Appreciate the help all!
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