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[Zach Parkscott]

Hi there.  First of all i am new to this site and forum sites in general, so any tips for anything would be great! haha.

So, I am in a band thats just getting going.  We are in the hunt for PA system.  In our hunt we were directed here.  We have a very small budget (like many young bands) of $2000 CDN.  So far we have been directed to these products:

QSC RMX1850HD
A Mackie or Yamaha MG series mixing board
A pair of Yamaha S115V speakers

I am looking for opinions on these products, and opinions on my situation in general.And I am an EXTREME NEWBIE! to this world of PA systems etc. So feel free to tell me anything and everything!  I'm here to get educated!

Thanks for your comments!

[Mac Kerr]

The first suggestion would be to read the existing information on these forums. There are hundreds of pages covering may topics. You can use the search function to narrow down the number of pages you need to read. There have been many discussions in the recent past on all of the equipment you are interested in. There are always differences of opinion, but by reading what everyone says you can make a, hopefully, informed decision. You should also read the posting rules at the top of each forum that clearly state that you need to use your whole real name as your alias.

Mac

[Zach Parkscott]

Thanks for the advice.

[Zach Parkscott]

Whats the JBL and yorkville equivalent to the Yamaha S115V?

[Andy Spalla]

Go for the Yamaha MG board. I have one and it's great.

[Michael 'Bink' Knowles]

Quote:

...QSC RMX1850HD ... A pair of Yamaha S115V speakers...

To get the most out of your speakers you should get an amp that is rated at twice the RMS rating of the speaker. The Yammies you mention are rated at 250w NOISE and 500w PGM. The "noise" spec is the same as RMS so your optimal amp should be 500w at eight ohms. QSC's RMX2450 is a better match. If you go with the 1850HD, it won't be abysmally low in volume, it just won't get as loud while remaining clean and clear.

Here is Chuck McGregor's article on proper matching of amps to speakers:
http://www.prosoundweb.com/studyhall/studyjump.php?pdf=watts

-Bink

[Evan Kirkendall]

Zach Parkscott wrote on Sat, 29 October 2005 14:22

Whats the JBL and yorkville equivalent to the Yamaha S115V?

JBL MP series
Yorkivlle Elite series



Go for the MG board. It's cheaper and works just as good as the mackie.


Evan

[RobertOziemkowski]

Michael 'Bink' Knowles wrote on Sat, 29 October 2005 20:04

Quote: ...QSC RMX1850HD ... A pair of Yamaha S115V speakers... To get the most out of your speakers you should get an amp that is rated at twice the RMS rating of the speaker. The Yammies you mention are rated at 250w NOISE and 500w PGM. The "noise" spec is the same as RMS so your optimal amp should be 500w at eight ohms. QSC's RMX2450 is a better match. If you go with the 1850HD, it won't be abysmally low in volume, it just won't get as loud while remaining clean and clear. Here is Chuck McGregor's article on proper matching of amps to speakers:  http://www.prosoundweb.com/studyhall/studyjump.php?pdf=watts -Bink

Bink is, as usual, correct.

You would be underpowered using the Yams with an 1850 in stereo. You could go bridged, but then you'd be overpowering the cabinets, which at your level of expertise, could prove very expensive!

I might add, if you choose the Yams, buy the SM, or monitor version! They'll make fine monitors if/when you have the money to upgrade the mains.

The Yorkville E15 can be used as main or mon.

[Zach Parkscott]

What does "bridged" mean?

[John Roberts {JR}]

Zach Parkscott wrote on Sat, 29 October 2005 15:08

What does "bridged" mean?

Bridged in the context of speakers and power amps means connecting both outputs of a two channel power amp to the + and - leads of a single speaker. By inverting the polarity of one of the two amp channels the voltage swing adds so is approximately doubled compared to a single channel. This allows you to put the whole power from a dual amp into one speaker. Care must be taken because the each amp is driving 1/2 the speaker the load looks like 1/2 the speakers impedance. So a 4 ohm speaker would look like 2 ohms to each amp channel.  

JR