Hi Colin, not sure about the tweeter design. They don't have preamp
volumes, just two volume controls, one for line and one for mic. well,
having said that, they must have pre-amp controls because you can plug a
mic directly in and use one volume control for that, and the other for the
line in. Yah, check out the spec's if you can. 73, Jim
-----Original Message-----
From: Colin McDonald
Sent: Friday, October 05, 2012 3:58 PM
To: [log in to unmask]
Subject: Re: OT, Qsc k-10 speakers?
ah excellent.
The more you tell me about these, the more I understand they are more of a
multi-purpose powered cab, with attension to music play back...thus the RCA
inputs.
A rule of thumb with most powered cabs is to set the main output volume
control at half and leave it there.
If there are built in pre amp gain controls, stick those at about half as
well to minimize distortion and keep the noise to a minimum.
Judging by the k10 model number they are 10 inch drivers? with perhaps a 1
inch tweeter? are they a horn tweeter design or a flat dome type tweeter? or
perhaps even a piezo tweeter?
I'll go check them out online and get all the goods.
73
Colin, V A6BKX
----- Original Message -----
From: "Jim Gammon" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, October 05, 2012 1:13 PM
Subject: Re: OT, Qsc k-10 speakers?
> Hi Colin, I just hooked up the k-10's and am very happy with the
> low noise coming from them with no signal playing. If I turn up
> the volume controls on the back all the way, I can hear a slight
> hiss, but I would never leave them at max volume for obvious
> reasons. I have played a variety of music through them and am
> really happy with the results here at my place. The speakers
> have x l r connectors, quarter inch, and RCA phono jacks which
> are the one's I am using for line in. I can't get much
> separation here the way things are, but it will only be better
> when I finally get things situated. 73, Jim
>
> ----- Original Message -----
> From: Colin McDonald <[log in to unmask]
> To: [log in to unmask]
> Date sent: Fri, 5 Oct 2012 11:25:29 -0600
> Subject: Re: OT, Qsc k-10 speakers?
>
> I haven't used these particular QSC speakers.
> I have used qsc power amps before and they always sounded pretty
> good for
> live environments.
> These k10's or k12's sound like they are good for small to medium
> PA
> applications.
> One thing you have to be aware of though is that signal to noise
> ratio in
> powered PA speakers will be significant compared with your
> average home
> stereo equipment.
> A 1KW amplifier is rather liberal of them since the only way you
> can get 1kw
> of program power out of them is with a pile of drive and a huge
> amount of
> distortion...
> They'll probably sing along at a few hundred watts without too
> much trouble
> though.
> However, the noise will be pretty obvious in a typical home
> listening
> environment.
> In order to get output like that, the amplifiers have to be class
> D digital
> amps, and though they sound very clean up to a certain point,
> that clean
> audio comes with a price on it.
> The noise is usually a hiss that can be heard even when the
> speaker is
> sitting idol.
> You don't hear that in live venues due to other ambient noise.
> So, if your intension is to use them for home listening, you may
> be
> disappointed.
> However, if your intension is to use them for live work, then
> they'll
> probably fit the bill nicely. They sound like they are fairly
> small and
> pack a punch.
> I've used a number of different powered cabinets such as the
> yorkville
> 200P's, 550P's and 750P's. These range from a 15 inch driver and
> 1 inch
> tweeter on the 200P's with a 200W amplifier, to the 750p's which
> have a 15
> inch driver and 2 inch tweeter and 750W of output.
> I've also used samson powered speakers which are garbage in my
> opinion.
> Also, I've used some JBL's in the past which sound pretty nice,
> though not
> quite as nice as the yorkville gear.
> I wasn't actually aware that QSC had gotten into the powered
> cabinet market.
> They may be one of the first to address the signal to noise ratio
> in their
> class D amplifiers, and if so, all this talk of noise may be a
> moot subject.
> I'll do some more reading on them and see what I can come up
> with.
> What is the price point like on these? That, like with most
> music related
> gear, is usually a fairly good indicator of quality and
> usability.
> A typical decent 1kw powered cab should cost somewhere in the
> range of $1000
> to $2000. That large range being due to features and actual
> program power
> etc.
> The program power rating is what the speaker will actually
> produce given
> typical line level drive. More like an RMS rating.
>
>
> 73
> Colin, V A6BKX
> ----- Original Message -----
> From: "Jim Gammon" <[log in to unmask]
> To: <[log in to unmask]
> Sent: Friday, October 05, 2012 12:35 AM
> Subject: OT, Qsc k-10 speakers?
>
>
> Hey Colin, off topic, but have you ever heard or heard of QSC
> k-10 or k-12 speakers? They are PA speakers but can also be used
> to play music. They are I guess large book shelf speakers, but
> have handles on one side and the top. They have a hold in the
> bottem that can accommodate those tripod stands that go from
> about 4 feet to probably 7 or 8 feet high. Each speaker has a
> 1000 watt power amp in it and has several types of input on the
> back as well as some low and high frequency controls and volume.
> Just wondering if you know about them? 73, Jim
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