Mixers/Power amp questions by Fonzie - TribalWar Forums
Click Here to find great hosting deals from Branzone.com


Go Back   TribalWar Forums > TribalWar Community > TW Music Collective
Reload this Page Mixers/Power amp questions
Thread Tools
Fonzie
VeteranX
Old
1 - 02-17-2012, 05:19 PM
Reply With Quote
So, like vocal effects (see: other thread), I know next to nothing about PA systems, mixers, and amplifiers (for the most part). However, since I play music, my boss assumes I know these things and would rather not hire a professional as long as I can put something together that works (small company, small budget).

So we put in two 70v ceiling speakers in our training facility (Only about 30 ft x 30 ft) and I currently have a Mackie CFX16mkII mixer:

http://www.mackie.com/products/cfx16...16mkII-Top.jpg
(for reference)

If I wanted to get a rackmountable power amplifier; how should I go about doing this? I'm guessing I won't need much power (80 watts should be fine). I have the speaker cables run to a plate (interchangeable between binding posts and banana cables for the connections).

I've noticed, for outputs, most power amplifiers (at this wattage) have terminal strips. Also, the inputs are generally Phoenix-type connections. How the heck do I hook up these speakers and mixer to the amplifier? XLR to Phoenix cables for the input?

I truly appreciate any feedback on this matter. I haven't purchased an amp yet so any recommendations would be great. Would like it to be rackmountable and under $500 if possible.

Thanks so much! No idea how much help this would be for me, haha.

 
Fonzie is offline
 
Sponsored Links
epidemic
VeteranXV
Old
2 - 02-17-2012, 06:38 PM
Reply With Quote
old_skul must know some **** about this
 
epidemic is online now
 
old_skul
UVALAN++
Contributor
Old
3 - 02-17-2012, 07:53 PM
Reply With Quote
What the **** is a Phoenix connector?

You can get stereo power amps all day long under $500. Ebay, or even new.

Here's the signal chain:

Microphone

XLR Mic Cable

Mixer

1/4" Cable

Power Amp

1/4" Speaker Cable(s)

Speaker(s)

Note that nowhere is "Phoenix" mentioned, since I have no clue what that is. Or a "terminal strip".
 
old_skul is offline
 
pinkcadillac
VeteranX
Old
4 - 02-18-2012, 07:37 PM
Reply With Quote
Old_skul is right on the money with the signal flow. And I second the thought that finding a power amp for under $500 will be cakewalk. I've always had great luck with QSC but there are alot of good brands.

As far as connections are concerned other than 1/4 TRS connectors, some power amps take banana clips (which you mentioned earlier) and I've run into speakon connections on some yamaha stuff. But in 10 years of running live sound I've never heard of phoenix-type connectors, so I can't help you with that. However, no matter what you connections you need you can buy cables that have what you're looking for. Check a place like sweetwater.com for your options.
 
pinkcadillac is offline
 
Fonzie
VeteranX
Old
5 - 02-21-2012, 10:01 AM
Reply With Quote
Quote:
Originally Posted by old_skul View Post
What the **** is a Phoenix connector?

You can get stereo power amps all day long under $500. Ebay, or even new.

Here's the signal chain:

Microphone

XLR Mic Cable

Mixer

1/4" Cable

Power Amp

1/4" Speaker Cable(s)

Speaker(s)

Note that nowhere is "Phoenix" mentioned, since I have no clue what that is. Or a "terminal strip".
Yeah I've never heard of Phoenix connectors either but I figured I just didn't know what they were. If you look at the newer budget models from Crown and QSC at least, that's the connection type it has. And the terminal strip is just this:



where you connect the speaker wires.

The speakers cables for the ceiling speakers weren't run to a 1/4" input plate, the connection looks more like this:



but just two pairs since there are only two speakers.

I'll just have to look around for one with 1/4" or even RCA outputs.
 
Fonzie is offline
 
Last edited by Fonzie; 02-21-2012 at 10:04 AM.
pinkcadillac
VeteranX
Old
6 - 02-24-2012, 07:22 PM
Reply With Quote
I have never seen those connector on pro audio gear but that looks like what gets used on almost all home audio stuff. If your PA system is permanent and not being broken down and moved, they could work fine i suppose. In fact those are even easier to wire up, just buy a proper gauge wire, and strip the ends, and stick them in the little holes.

This is of course assuming these connections are only between the power amp and the speakers. You want to run a balanced signal from your mixer to your power amp or you run the risk of interference. And you can't run a balanced signal with those connections.
 
pinkcadillac is offline
 
old_skul
UVALAN++
Contributor
Old
7 - 02-25-2012, 10:26 AM
Reply With Quote
Eh, I've seen older bare-wire terminal strips on older amps. I didn't know the budget stuff still had that as a connector. I mean, it'll work just fine. Just strip the cables and screw down the conductor. Make sure to get the polarity right, and get it right on both sides.

Not having a balanced connection in a live situation isn't a big deal. If you get interference...move the cable.
 
old_skul is offline
 
Fonzie
VeteranX
Old
8 - 02-29-2012, 12:25 PM
Reply With Quote
Say I run use a banana cable to 1/4" to connect the output from the power amp to the speakers, does the voltage matter? Like the speakers are 70v (standard commercial speakers) but I was looking into the QSC GX3 (QSC - GX Series Amplifiers and GX Series Specifications)? Not sure how this all works, sorry.

Edit: I could even just use banana cables. I'm just curious about this voltage stuff.

Edit Edit: And does the mixer voltage matter?
 
Fonzie is offline
 
Last edited by Fonzie; 02-29-2012 at 02:41 PM.
Fonzie
VeteranX
Old
9 - 03-01-2012, 10:42 AM
Reply With Quote
NVM the above post. You can switch between the 70v distributed system and 8ohm 35 watt RMS/100 watt max. I'm gonna go with this guy:
American Audio VLP300 Power Amplifier Standard and more Live Power Amplifiers at GuitarCenter.com.

Since I'll prob be running each speaker to a separate channel, each speaker will still be running at 8ohms right?
 
Fonzie is offline
 
old_skul
UVALAN++
Contributor
Old
10 - 03-02-2012, 09:25 AM
Reply With Quote
Two speakers? Stereo power amp? No problem. 8 ohms is fine.
 
old_skul is offline
 
Fonzie
VeteranX
Old
11 - 03-02-2012, 01:42 PM
Reply With Quote
Thanks for all the help everyone and putting up with my stupidity!
 
Fonzie is offline
 


Go Back   TribalWar Forums > TribalWar Community > TW Music Collective
Reload this Page Mixers/Power amp questions

Social Website Bullshit

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

AGENT: CCBot/2.0 (http://commoncrawl.org/faq/) / Y
All times are GMT -5. The time now is 08:55 AM.