SounDigital SD1800.1D clamp testing, SPL testing, review.

[DUMPED 10+ year member]

STETSOM is the BEST !!!!!!!!!!!!!!!!!!!

go BRAZEELLLL !!!!!

oh I'm sorry that was so 2007/8

I meant to say go SD........ BRAZEELLL # 1 !!!!!!!!!

 

[murilo 10+ year member]

I'm curious to test out how the voltage across the terminals of a battery charger will change with the current draw of the batteries to the amp. I guess it depends on the voltage regulation that the charger allows on the secondary winding of the transformer.

Of course, the higher the point in winding the larger voltage drop.

 

[murilo 10+ year member]

I don't understand what you're trying to get across. The root mean square is for alternating current, not direct current.

Because the output is pulsating before you connect to a battery.

 

[murilo 10+ year member]

STETSOM is the BEST !!!!!!!!!!!!!!!!!!!go BRAZEELLLL !!!!!

oh I'm sorry that was so 2007/8

I meant to say go SD........ BRAZEELLL # 1 !!!!!!!!!

您好喬治！中國！

 

[DUMPED 10+ year member]

您好喬治！中國！

please explain .....thanks //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[murilo 10+ year member]

Translate that, mister.

 

[Lakota 5,000+ posts]

Because the output is pulsating before you connect to a battery.

Yes, but the voltage isn't alternating. The voltage basically has a zero slope and is a flat line that is acting like a step function that can either increase or decrease, but keeps the same flat shape. RMS is used for periodic waveforms, such as sine, sawtooth, and square waves.

 

[DUMPED 10+ year member]

Translate that, mister.

there are no letters or anything to translate sir..

but thanks anyways...

 

[thegreatestpenn 5,000+ posts]

where can someone in columbus ohio obtain teh soundigital goodness????????

 

[murilo 10+ year member]

Yes, but the voltage isn't alternating. The voltage basically has a zero slope and is a flat line that is acting like a step function that can either increase or decrease, but keeps the same flat shape. RMS is used for periodic waveforms, such as sine, sawtooth, and square waves.

No, RMS voltage can be aplied if a quantity varies above zero.

you can use a simple on line app and put a dc offset to try it by yourself

http://phy.hk/wiki/englishhtm/Rms.htm

 

[Lakota 5,000+ posts]

No, RMS voltage can be aplied if a quantity varies above zero.
you can use a simple on line app and put a dc offset to try it by yourself

http://phy.hk/wiki/englishhtm/Rms.htm

Exactly, they are using it for an AC signal.

 

[Lakota 5,000+ posts]

But, anyways. One thing that concerns me with the larger amps, like the 5000 and 8000 watt amps is that there's only 1 set of power and ground terminals. Are people expected to safely pull that much current through a single 1/0 wire?

 

[murilo 10+ year member]

Exactly, they are using it for an AC signal.

Oh I got what you are saying.

So I said that to measure the RMS voltage of a non-sinusoidal waveform you should use proper equipment, not the average multimeter because it would read wrong.

 

[murilo 10+ year member]

But, anyways. One thing that concerns me with the larger amps, like the 5000 and 8000 watt amps is that there's only 1 set of power and ground terminals. Are people expected to safely pull that much current through a single 1/0 wire?

Yes the people pull 13kW out of the SD8000 using those terminals.

And for daily use the terminals are still ok, considering you will have a battery near the amp and the cable wont be too long.

 

[hunterw 10+ year member]

what frequency yeilded the 2300 watts?