Crown XTi series Amplifiers – Global Sound

Global Sound –

Crown XTi Series Amplifier Reviews
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Chris from UniqueSquared walks us through the proper way to match speakers and amplifiers. Make sure you pay careful attention so you don’t compromise the integrity of your amplifier or speaker. To learn more about amplifier matching, check out Chris’ blog here: Also check out the UniqueSquared website for great deals on JBL speakers and Crown amplifiers here: Be sure to Fan us on Facebook, Follow us on Twitter, and Subscribe to our YouTube Channel if you want more videos like this:
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11 thoughts on “Crown XTi series Amplifiers – Global Sound”

  1. I didn’t cover wiring in parallel vs. series because a lot of speakers have the 1/4″ or speakon cable input so by default they are wired in parallel. I was also trying to fit a lot of info into a short amount of time. But that’s not a bad idea for another whiteboard video. Thanks for the comment.

  2. We don’t recommend that you connect two speakers that have different impedance ratings on the same channel. That being said, if you used the 4 ohm speaker and the 8 ohm speaker together you would have 8/3 or approximately 2.7 ohms of resistance. Here’s the formula:

    R = resistance of each speaker
    Rtot = Total resistance (what you want to find)

    1/Rtot = 1/RA + 1/RB …etc So,

    1/Rtot = 1/4 + 1/8
    1/Rtot = 2/8 + 1/8
    1/Rtot = 3/8
    Rtot = 8/3 = 2.7 ohms

    Check the Unique Blog for more details.

  3. What happens when you use a 4 ohm speaker and a 8 ohm speaker on each channel. How many ohms is that?

  4. OK get the theory but your speaker is rated at 500w (RMS), 2000w Peak. Your amp can only push 800w Peak, Most likely meaning 400w (RMS) as your amp is a D-Class. Just because a speaker will manage 2000w of peak power it is for only a fraction of a second and you should never reach it anyway. However, correct 0dB output from a mixer will give your 500w RMS power, leaving a further 1500w for tiny peaks of +3 or 6dB in the track. I’m convinced your amp is too small for your speakers.

  5. Would helpful to the less tech oriented, to know about calculating loudspeakers connection in parallel vs in series. As rule of thumb speaker impedance has to be at least equal or greater than amp impedance. Neverthless if speaker impedance is greater than amp (i.e. 16 ohm on a 8ohm power amp ) then impedance output will be reduced cause of a greater resistive charge.

  6. I’m not sure to agree with the math. From the 70 have known that speakers need 50% more RMS than power amp. Simply evidence: a bigger power amp if not putting attention can saturate or even to broke speakers if reach the peak power, so better bigger loudspeakers rather than an amp overpowered. Otherwise please let me know formulas. Thanks.

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