Reddit reviews Tripp Lite IS250 Isolation Transformer 250W Surge 120V 2 Outlet 6 feet Cord TAA GSA
We found 10 Reddit comments about Tripp Lite IS250 Isolation Transformer 250W Surge 120V 2 Outlet 6 feet Cord TAA GSA. Here are the top ones, ranked by their Reddit score.
250W ISOLATION TRANSFORMER: Complete line isolation, noise filtering and surge suppression is ideal for sensitive equipment. Supports combined loads up to 250 watts continuous/2.1A at 120V2-OUTLETS: Includes two widely spaced NEMA5-15R output receptacles, 6 ft. power cord, circuit breaker overload protection and lighted power switchREADY TO USE: Rugged all-metal housing ships ready for upright tower or wall mount installationTAA COMPLIANT: Compliant with the Federal Trade Agreements Act (TAA) for GSA Schedule purchases2 YEAR WARRANTY & FREE TECH SUPPORT: Tripp Lite warrants this product to be free from original defects in material and workmanship for the duration of the warranty. If the product should prove defective in that time, Tripp Lite will gladly repair or replace it. Our Chicago-based Tech Support Team is ready to assist you with any warranty assistance, trouble-shooting techniques or configuration help. Call them at 773-869-1234 M-F 8am-6pm CST
I would guess it's electrical/grounding.
Plug laptop into an isolation transformer and not directly into a wall socket and that might remove any hum: https://www.amazon.com/Tripp-Lite-Isolation-Transformer-Outlet/dp/B00006HPFH
Or maybe try to get an external DAC, and connect that DAC to the laptop via optical cable rather than USB - optical cable isn't electrical so wouldn't transmit any grounding hum or anything like that.
Really hard to say. Depends on the source and nature of the noise. Best, of course, would be to find what is pissing in the pool and fix it. It could be that a "conditioner" will help, but those are usually just churched-up voltage regulators. What needs to happen is you need to magnetically isolate each element of your power (hot, neutral.. you've already lifted the ground) to see where the noise is coming from.
Also, as you should know, if the speaker requires a safety ground, then you shouldn't run without it. Lifting AC grounds for troubleshooting is fine, but you shouldn't run that way.
Edit:
https://www.amazon.com/dp/B00006HPFH/ref=asc_df_B00006HPFH5139298/?tag=hyprod-20&creative=394997&creativeASIN=B00006HPFH&linkCode=df0&hvadid=194017009123&hvpos=1o2&hvnetw=g&hvrand=10338180432329554974&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9019608&hvtargid=pla-311461649184
Crunching points to something in the amp being off, but hiss/hum could be a ground loop issue with your house's wiring, especially with nothing plugged in. If an amp tech can't find anything wrong with the amp, it may be worth investing in an isolation transformer like this: http://www.amazon.com/Tripp-Lite-Isolation-Transformer-Outlet/dp/B00006HPFH
There are isolation transformers for 120V AC. It might be overkill, but it would most likely solve your problem.
http://www.amazon.ca/Tripp-Lite-IS-250-Isolation-Transformer/dp/B00006HPFH
Lots of good information here, I appreciate it.
I'll check outside tomorrow and see if i can find anything leading to the ground. The only thing I saw last time was two metal cables which were bolted down to the pipe system near the water heater/furnace, and that's in the basement, but I didn't look outside.
The isolation transformer I've been using is this Tripp Lite IS250. It did literally nothing, or if it is, it's not discernible to me.
I've tried plugging just the amp, sans cables/pedals/guitars into the power outlets and it still makes the noise. It's relative to the master/gain/volume switches, so when you turn them up the noise gets worse. And worse again on the dirty channel. Strangely enough I did attempt to lift the ground just to test it on one of the amps and it made a slight difference, the other two it made no difference.
Well I am not sure its line noise. It could be a noisy power supply disrupting the radio signal.
One of these might help if it is line noise causing the trouble:
https://www.amazon.com/Tripp-Lite-Isolation-Transformer-Outlet/dp/B00006HPFH
If this doesn't solve the issue, then it is the speakers themselves that are bad in some way, or whatever interface they are plugged into (be it a DAC, computer, etc).
Edit: I noticed my post is worded with a poor tone. I'm not actually 100% sure that this is the issue, I just have a pretty strong sense that it probably is. I am not an electrician, though.
Are you thinking it's a ground loop that can be resolved by something like this, or are you thinking something more like this?
something like this? what wattage do i need? https://www.amazon.com/Tripp-Lite-Isolation-Transformer-Outlet/dp/B00006HPFH
OP, you want this:
http://www.amazon.com/Tripp-Lite-Isolation-Transformer-Outlet/dp/B00006HPFH/ref=sr_1_3?ie=UTF8&qid=1458363294&sr=8-3&keywords=isolation+transformer
I had one and stupidly left it when I moved. Why I left it, I have no fucking idea but I should have kept it.
Also, get a proper UPS that does AVR like this one which is relatively cheap: http://www.amazon.com/CyberPower-CP1500AVRLCD-Intelligent-1500VA-Mini-Tower/dp/B000FBK3QK/ref=sr_1_1?ie=UTF8&qid=1458363419&sr=8-1&keywords=cyberpower+ups
You should wire these like this:
Outlet <--> Isolation Transformer <--> UPS/Surge <--> devices.