Originally Posted by Jack1949
I had the same question before I purchased an SB13 earlier this year, so I asked SVS support and their response is below. I listen at moderate to loud levels and have never had a problem.
The SB13-Ultra won't necessarily pull 1000w continuously from your outlet like for example, a hair dryer would. Instead it will draw power intermittently at smaller burst. Around the louder, more strenuous scenes it could potentially draw more power, but again that should be in short burst and shouldn't be an issue! Please see below a good estimation of power being consumed by the 1000 watt amplifier in the SB13-Ultra.
· standby = 0.7W
· on at idle with no signal = 20W
· low to moderate volumes = 50-150W
loud to very loud volumes = 200-1000W
Just to expand slightly on this, I have been running a pair of SVS SB13 Ultras on a single 15 amp circuit with all my AV gear for the last 2 years or so without anything terribly significant happening. Sort of.
Not to any real surprise, it's the seriously low frequencies in movies or any specialty bass music (eg: Bass I Love You) at very loud volumes that require the most power. Volume control and bass amounts is much like salt and pepper: it's very subjective and each person may want different amounts of each. I keep my bass around 9dB hot from calibration. When watching the opening scene of Edge of Tomorrow, it was an iconic moment in my AV history for sure. My friends and I had smiles that touched our ears! Of course, we re-watched the opening sequence a few times and then I got silly with the volume control. I played it once at -8dB volume and the subs pulled so much power, it made my Panamax conditioner (the subs are not behind this) intervene and all my gear turned off. I did not trip the breaker, however.
Later this fall, I had a few friends over and we were jamming to Steve Wilson's new album. I went up stairs to fetch another drink and one of them went insane with the volume. I have a Yamaha 3040 receiver paired with some PSA MTM-210 speakers and he juiced it to -3dB. I had to text him to turn it down before I felt it was comfortable coming back down the stairs. About 10 minutes later, my breaker tripped and I had to install a new one because it was broken!
On a side note in the realm of amps and power draw, I did some measuring with a single PSA S3000i as I kept blowing my 15A circuits and had major light dimming problems, it didn't matter if I used the shared one with my AV or a plug down the hall that was on a different circuit. Playing Bass I Love You could repeatedly trip the breaker! I was able to measure, at the breaker with a Fluke multimeter, over 27 amps (peak) of draw during the lowest burps of the bass. Nominal was around 3-4 amps with that combination.
Now, that is a bit of a long story, but I do believe that any combo with a capable driver and solid amp can drive a circuit to the ground. It's simply electronics at work here. My friends think that my equipment combination greatly decreased the lifespan of the breaker as my house is only 10 years old. I do have plans this next summer to install a dedicated 20 amp circuit for my subs as a precautionary measure.