[RE-wrenches] Sound Equipment Inverter

[larry at starlightsolar.com]

I second the Outback power quality. We built a mobile medical lab that has Xray, ultrasound and other sensitive lab electronics. A 120kWh Li-ion battery package with 8 Outback 3.6kW stacked inverters @ 48 volts has been operating almost weekly for over 3 years.

Run from Samlex. We were burned SO many times with poor quality inverters and worthless dealer support. If you want high quality, low cost, look at GoPower industrial models made by Cotek. Many sold, none come back. Able to start heavy loads like air compressors and circular saws.

Larry Crutcher
Starlight Solar Power Systems




On Oct 22, 2020, at 5:07 PM, Jerry Shafer <jerrysgarage01 at gmail.com> wrote:

Wrenches
I have built solar powered sound stages, power trailers for both music and drive in movies, l only use outback, never any complaints, some acts prefer over dirty grid power. I had sunpower positive grounded arrays, AC-DC Coupled arrays. I had a guy use SMA and had all kinds of issues, mainly operator error. We did a full trailer, green room and light bars, powered drop down doors, but it was a little big.
Jerry

On Thu, Oct 22, 2020, 3:42 PM Ray <ray at solarray.com <mailto:ray at solarray.com>> wrote:
Hi All;

I've just had an inquiry on building a portable sound stage and 
recording setup.  Traditionally we've always used Exeltech, as they've 
had the cleanest output, with background buzz on tube amps being lower 
than grid power.  Modsine were horrible, Old Trace SWs were pretty 
intolerable, Magnum's were usable, but still noticeably more buzz than 
grid.  I think THD is roughly associated with the background buzz, but 
there might be certain harmonics that are particularly problematic.  I 
haven't gotten into looking at the separate harmonics relative to what 
induces the most noise in these old vacuum tube circuits.

This is a 48 v application that also needs a built in charger with 
transfer switching.  Exeltech does not appear to have anything in that 
department.  Any other choices?  How are Samlex?

As always, thanks in advance for your time and expertise,

-- 
Ray Walters
Remote Solar
303 505-8760

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