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Author Topic: QSC K12 vs K12.2 specs  (Read 19594 times)

Tony Mamoh

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QSC K12 vs K12.2 specs
« on: July 23, 2017, 11:28:34 AM »

The specs for the 'new' QSC K12.2 claims it delivers 2000watts. The previously issued K12 was always advertised to deliver 1000watts.

What on earth makes the K12.2 have 2000 watts? The drivers appear very similar. The major difference in both boxes seems to be the Bluetooth enabled feature on the new K12.2 . Is there something I am not seeing? Or is this the usual game of manufacturers playing with numbers to give buyers a quick attraction (until they read the fine prints.....wherein lies the devil and/or the truth)?
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Mac Kerr

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Re: QSC K12 vs K12.2 specs
« Reply #1 on: July 23, 2017, 11:55:23 AM »

The specs for the 'new' QSC K12.2 claims it delivers 2000watts. The previously issued K12 was always advertised to deliver 1000watts.

What on earth makes the K12.2 have 2000 watts? The drivers appear very similar. The major difference in both boxes seems to be the Bluetooth enabled feature on the new K12.2 . Is there something I am not seeing? Or is this the usual game of manufacturers playing with numbers to give buyers a quick attraction (until they read the fine prints.....wherein lies the devil and/or the truth)?

The amp has 3dB more headroom?

Mac
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Will Knight

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Re: QSC K12 vs K12.2 specs
« Reply #2 on: July 23, 2017, 12:08:54 PM »

The specs for the 'new' QSC K12.2 claims it delivers 2000watts. The previously issued K12 was always advertised to deliver 1000watts.

What on earth makes the K12.2 have 2000 watts? The drivers appear very similar. The major difference in both boxes seems to be the Bluetooth enabled feature on the new K12.2 . Is there something I am not seeing? Or is this the usual game of manufacturers playing with numbers to give buyers a quick attraction (until they read the fine prints.....wherein lies the devil and/or the truth)?

Here is an extract from QSC explaining the new power amp strategy for the K2.

"....Legacy K Series ampliers were measured on a test-bench to deliver up to 500W+500W into an optimal load, with Peaks of 1000W. In contrast, the new K.2 amplier has been measured in-system to deliver 900W into the LF driver, with Peaks of 1800W. This smarter power distribution of 1800W+225W results in almost twice the power delivered to the LF driver compared to legacy K (1800W vs 1000W Peak)."..
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Nathan Riddle

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Re: QSC K12 vs K12.2 specs
« Reply #3 on: July 23, 2017, 12:41:16 PM »

Great! An extra 800w of peak power that is useless for all but advertising!

I wonder why spend the r&d on a new amp that won't yield better results?

(The new dsp/drivers excluded)
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Thomas Le

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Re: QSC K12 vs K12.2 specs
« Reply #4 on: July 23, 2017, 01:02:11 PM »

It's all marketing, there's no way a QSC k2 speaker can beat a JBL SRX800P even though the k2 and SRX800P both tout 2kW. The SRX800P can rip apart with up to 136dB max SPL while the k2 12 only does 132dB max SPL.
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Mal Brown

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Re: QSC K12 vs K12.2 specs
« Reply #5 on: July 23, 2017, 01:40:15 PM »

Form a systems architecture standpoint, QSC's new amp topology makes sense.  Lows need more power.  Highs, less...  if they can bench it, they can use it to market.

As far as the JBL stuff goes, after my experience with PRX 612m's ...  JBL is in my rear view mirror...  while I do love my SI 3 and mini stage box setup, I have no love for Harmon these days.   Talk about hyped marketing... and their overall lack of product support is underwhelming to say the least.
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Scott Bolt

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Re: QSC K12 vs K12.2 specs
« Reply #6 on: July 23, 2017, 02:28:19 PM »

I am waiting to hear one side by side with my DSR112 before I pass judgement ;)

Note that the DSR112's have a similiar amplifier topology (more amp going to the woofer than the tweeter); however, the rubber hits the road, it is about how good it sounds, and how loud it can get and still sound that good.
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Paul G. OBrien

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Re: QSC K12 vs K12.2 specs
« Reply #7 on: July 23, 2017, 04:53:50 PM »

The SRX800P can rip apart with up to 136dB max SPL
Speaking of marketing BS...

The original K series was a 600w rms box for all intents.. the compression driver never uses more than about 100w of the 500w available to it, so the new series is an upgrade.
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Mac Kerr

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Re: QSC K12 vs K12.2 specs
« Reply #8 on: July 23, 2017, 05:13:26 PM »

The specs for the 'new' QSC K12.2 claims it delivers 2000watts. The previously issued K12 was always advertised to deliver 1000watts.

What on earth makes the K12.2 have 2000 watts? The drivers appear very similar. The major difference in both boxes seems to be the Bluetooth enabled feature on the new K12.2 . Is there something I am not seeing? Or is this the usual game of manufacturers playing with numbers to give buyers a quick attraction (until they read the fine prints.....wherein lies the devil and/or the truth)?

Maybe I was too subtle. What exactly do you think the difference in performance with 2 nearly identical speakers is when one of them has a peak power consumption of 1000W and the other is 2000W?

The difference is that most people will be able to tell that one of them is slightly louder than the other when they are each driven to their performance limits assuming all other factors are the same. 3dB, the smallest difference in SPL that most people can discern. That is the difference between 1000W and 2000W, 3dB.

Using watts as a descriptor of speaker performance is a marketing ploy, it has little or no relation to actual audio performance.

Mac
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Andrew Broughton

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Re: QSC K12 vs K12.2 specs
« Reply #9 on: July 23, 2017, 05:45:31 PM »

3dB, the smallest difference in SPL that most people can discern.
It's more commonly agreed that 0.5 to 1db is the smallest change in level discernible by humans.
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Re: QSC K12 vs K12.2 specs
« Reply #9 on: July 23, 2017, 05:45:31 PM »


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