Page 1 of 1

SY77 hz

Posted: Fri Nov 06, 2009 1:20 pm
by Chas
Just need to know what the SY77 hz rating is. I am guessing it is 60hz?

I need to know this so I can buy the appropriate step down transformer to run my 120V SY77 here in Australia.

I google searched this to death but could not find the bloody answer anywhere!

Chas :)

Re: SY77 hz

Posted: Fri Nov 06, 2009 4:11 pm
by b3groover
If it's coming from the USA, then yes. 120v, 60Hz.

Re: SY77 hz

Posted: Sat Nov 07, 2009 9:28 am
by Chas
Ok thanks very much.

Also, I need to know how many watts is the SY77.

Not sure which of these to buy as I will also need to run some Mackie HR864's on 110v: http://www.tortech.com.au/stepdown.html

Re: SY77 hz

Posted: Sat Nov 07, 2009 10:50 am
by crystalmsc
Chas wrote:Also, I need to know how many watts is the SY77.
The specification from Yamaha's page said the power consumption is 28 Watts.

Re: SY77 hz

Posted: Sat Nov 07, 2009 6:56 pm
by b3groover
According to the back of my HR864's, they pull 150w each. Looks like you'll need the 500w stepdown transformer.

Re: SY77 hz

Posted: Sun Nov 08, 2009 7:54 am
by Chas
Thanks for checking that out for me B3groover. I just found a stats page for the Mackies saying that their low freq "Burst power output" is 350 watts. Do I have to make allowances for this "burst power"?

http://www.mackie.com/products/hr824/specs.html

Sorry for the newbie question, I hope you don't mind.

crystalmsc, thanks. Wow that seems quite low compared to other gear.

Re: SY77 hz

Posted: Sun Nov 08, 2009 9:01 am
by b3groover
It probably depends on how hard you plan on pushing the speakers. The amps in the speakers are not class A, but probably class F or even G or H. They'll only pull as much current as they need. So if you're not blasting them, you'll be fine.

That said, I'd rather have more than enough power rather than not enough power, you know?

Re: SY77 hz

Posted: Sun Nov 08, 2009 1:21 pm
by Chas
Cheers mate. Yea I'm not the blast type. The 500W transformer should be fine for me.