Sigberg Audio Saranna Active Floor-Standing Loudspeakers With Cardioid Bass!

[Sigberg Audio]

So, you are close to ready to go in the US by the look of it. One spec. missing is the max power draw. The AC circuits to the wall plugs in the US are 120 volt 60 Hz, with 15 amp per circuits. Usually outlets are daisy chained to a degree. It is likely that all the wall outlets in a given room will be on the same circuit. 20 amp circuits are allowed, but the breaker has to be changed, and usually the wiring updated. Also, not so long ago neutrals were allowed to be daisy chained between circuits, but that is no longer allowed. Also arcsoft breakers are now code. The huge rise in discontinuous loads was the reason daisy chained neutrals were no longer allowed, as they cause neutral gouging. Discontinuous loads are when the draw is not even thought the AC cycle. That applies to many loads now, including LED bulbs and switching power supplies especially. So this is the long way round to say that max power draws should be added to the specification list.

I bet those are really good speakers and hope you do well with US sales.

Thank you! Maximum power draw per speaker is 650W. So theoretically up to 1300W for both at the same time, though I don't think that's not something you'd see in real life use.

It's not listed on the website (will consider that), but it is listed in the manual.

 

[TLS Guy]

Thank you! Maximum power draw per speaker is 650W. So theoretically up to 1300W for both at the same time, though I don't think that's not something you'd see in real life use.

It's not listed on the website (will consider that), but it is listed in the manual.

Two speakers would come close to fully loading a circuit, so there would be limited margin for other devices in the room. Generally in US homes the wall plugs in a room are on one 15 amp circuit. So a standard circuit takes 15 amps max. Sometimes it is worse than that, but your customers will likely have higher end homes.

One other thing I should give you a heads up on, is the starting inrush current. My Quad amps blew the standard breakers, the 20 amp ones even, at startup. So I had to install magnetic shunt breakers to those circuits. These have electromagnets in them, which are energized by the inrush current and hold the breaker closed until the inrush current subsides.

 

[Sigberg Audio]

Two speakers would come close to fully loading a circuit, so there would be limited margin for other devices in the room. Generally in US homes the wall plugs in a room are on one 15 amp circuit. So a standard circuit takes 15 amps max. Sometimes it is worse than that, but your customers will likely have higher end homes.

One other thing I should give you a heads up on, is the starting inrush current. My Quad amps blew the standard breakers, the 20 amp ones even, at startup. So I had to install magnetic shunt breakers to those circuits. These have electromagnets in them, which are energized by the inrush current and hold the breaker closed until the inrush current subsides.

For any normal (or even elevated) listening volumes, the total draw would be way less than this.

 

[TLS Guy]

For any normal (or even elevated) listening volumes, the total draw would be way less than this.

I fully understand that, and it true of any amp other than class A. However, over here it is the turn on inrush current that gets you in my experience. So it would be a good idea to know the turn on in rush current of the amps.

 

[ryanosaur]

I fully understand that, and it true of any amp other than class A. However, over here it is the turn on inrush current that gets you in my experience. So it would be a good idea to know the turn on in rush current of the amps.

I think the Hypex Amps are designed with that in mind. I cannot access spec sheets for the Ncore MP modules (the actual amp modules used in their Fusion Plate Amps) as those are OEM products and I don't have an account, though perhaps one can find them with some sleuthing. That said, Hypex does offer a DIY Soft Start Module for certain products on their DIYClassD site. Yes, it is a bit of an assumption on my part, but considering the design flexibility built into the Fusion Plates and base NcoreMP Modules, that they wouldn't have accounted for this.

 

[Verdinut]

I fully understand that, and it true of any amp other than class A. However, over here it is the turn on inrush current that gets you in my experience. So it would be a good idea to know the turn on in rush current of the amps.

There is obviously a better idea. A good powerful power amp should have a current limiting circuit at power on. An alternative is to use a power sequencer. I use a Furman PS-8R sequencer on my AV system. Furman now sells the M8-S power conditioner with sequencing solution with 6 outlets:

Furman M-8S Power Conditioner - Surge Protection & Sequencing Solution

Protect your gear with the Furman M-8S power conditioner. 9 outlets, EMI/RFI filtration, surge protection, and power sequencing for pro audio and home setups.

furmanpower.com

I don't really need it for my QSC DCA power amps as they utilize a "soft start" circuit to mitigate the large inrush current that occurs when powered on.