QSC 2450 & 2 x 600w subs ? |
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ceharden
The 10,000 Points Club Joined: 05 June 2005 Location: Southampton Status: Offline Points: 11776 |
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Bridging an RMX1450 per sub at 900W 8R bridge wouldn't be such a bad idea as a short term solution if you already have them. Two 2450's would give you more headroom but would have to be used more carefully because with high duty cycle bass you could get the drivers pretty toasty!
A larger sub amp would be the better solution and allow you to expand your system in future.
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Conanski
Old Croc Joined: 26 January 2006 Location: Ottawa, Canada Status: Offline Points: 2515 |
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The RMX2450 really doesn't like to bridged mono at 4ohms on bass, QSC actually built the same amp with a few tweaks specifically for this use... it's called the RMX1850HD.
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TMH Music
Young Croc Joined: 07 April 2011 Location: London Status: Offline Points: 635 |
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Ok, so if this was my rig, for the moment, I’d probably be using the 1450s in bridge on each bass bin and the 2450 on the mid tops. If you’re after big fat bass, then more of the same cab is the way to go. Reflex bins will easily meet your mid/tops, in terms of frequency response. Don’t complicate things unnecessarily. When adding more bins, flog the 1450s and replace with a “big boy” amp.
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Nothing is foolproof because fools are so ingenious
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Radius
Registered User Joined: 30 January 2019 Location: UK Status: Offline Points: 102 |
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Starting to understand this a bit better- so even if an amp is rated at say 700qw @ 8ohm, if the amp is not designed with meaty enough Capacitors to ensure a consistent "reservoir" of power, then it will struggle....My mate also explained about 3 phase, and that why eth "proper" amps use that due to the huge power consumption... certainly got my eyes on a few amps...
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gen0me
Young Croc Joined: 20 February 2016 Location: UK Status: Offline Points: 999 |
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If you want to compare amps based on caps: Yes but only comparing transformer to transformer. Impulse power supplies work with thousand times more often charging cycles plus some recycle energy coming from speaker inductance.
Call them first and find out if they have in stock..
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imageoven
Old Croc Joined: 28 March 2007 Location: Scotland Status: Offline Points: 2186 |
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Audio amplifiers using a 3 phase supply directly are uncommon.
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Keep pushing on, things are gonna get better.
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Radius
Registered User Joined: 30 January 2019 Location: UK Status: Offline Points: 102 |
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Sorry I wasn't clear on 3 phase as a power supply- I mean where a 63 amp cable supplies from a generator or 3 phase, which would be the case in a big venue ?
the amp itself usually runs of 240, but might take 16a or more is what I understood.. the 3 phase thing is a red herring really..for now I need to stick to amps with a normal plug on it I think until I have my head around the basics. |
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Radius
Registered User Joined: 30 January 2019 Location: UK Status: Offline Points: 102 |
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I also looked at eth FFA 6004- would eth 6004 do 4 600w RMS subs nice ? I suspect it would, but worth checking my assumptions - promise- last post
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AKA the typo king...bear with me, my hands are big and the keyboard small....
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