| Forum: LAB: The Classic Live Audio Board |
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| Topic: K-Array system, any experience |
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| Re: K-Array system, any experience [message #382431 is a reply to message #382352 ] |
Mon, 01 December 2008 02:35 |
 Mattheus van Zanten
Messages: 3
Registered: November 2008
Location: Hengelo, The Netherlands |
Newbie |
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Here's a peak inside. As you can see there are 5 horndrivers in the middle and 6 x 8" speakers beside them.
Very handy is the fact that you can "open" the centered horndrivers so you can choose between 7 and 37 of vertical coverage. We work with only one top per side, but when our fame will grow (hopefully..) and we need to cover bigger crowds we can easily hang another top underneath our one and adjust the vertical coverage and have a lot more power...
Attachment: IMG_0254.jpg
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| Re: K-Array system, any experience [message #382434 is a reply to message #382431 ] |
Mon, 01 December 2008 02:49 |
Luo Qi
Messages: 13
Registered: September 2008
Location: CN |
Here Often |
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Ahead of this thread, there is one guy who eared this array set up giving a great comment on what it sounds like, that being said it is able to compete with EAW's......So I can't help but wonder which components they are using...???
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| Topic: Need to build a profile on an M7CL in Nashville next week. |
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| Re: Need to build a profile on an M7CL in Nashville next week. [message #382452 is a reply to message #382222 ] |
Mon, 01 December 2008 08:19 |
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Jeff Babcock
Messages: 1475
Registered: September 2006
Location: Ontario, Canada |
Has No Life |
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Microsoft Virtual PC for OSX runs Windows XP just fine on PPC Macs. This is what I used before I had an Intel Mac. That will run SM just fine.
jeffbabcock.org
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| Topic: Class D phase response |
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| Re: Class D phase response [message #382469 is a reply to message #382372 ] |
Mon, 01 December 2008 10:26 |
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John Roberts {JR}
Messages: 7470
Registered: April 2004
Location: MS |
Has No Life |
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| Art Welter wrote on Sun, 30 November 2008 20:21 |
Peter,
Very interesting comparisons. Mixing amp brands may also need to be addressed by different delay settings to get phase traces exactly correct, it seems.
What does DIM100 Vs. Power 4 ohm mean? Is DIM100 inter modulation distortion?
The Lab Gruppen does a power reversal Vs % on that chart.
Then on the THD chart it does a power reversal at about 1.5%.
Is this due to a limiter that cuts power based on distortion?
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DIM100 is an obscure test that stresses slew rate. It mixes a sine wave with a square wave and looks for distortion on that sine wave during the square wave edges. This test is generally one that a product either does great or lousy depending on it's slew rate capability, and/or input filtering.
From inspection of the frequency response plots the FP6400 doesn't indicate an overall LPF like the other amps. I suspect even a modest LPF well above the audio band would probably clean up the DIM100 result, but this is just supposition on my part and not proved.
As a circuit designer myself, I never embraced the DIM tests as they involve out of band stimulus signals (square waves). That said I generally favor band passing the audio early in the signal path, so any square waves would be slowed down elsewhere well before getting to my power amp where they could cause mischief.
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All amps will have some HF phase shift under load due to protective load isolation series inductance in outputs. IIRC the crown will have an additional wide band delay due to A/D/A.
JR
https://www.resotune.com/
"A bus in a console is spelled with one 's', but you can buss your girlfriend while riding in a bus."
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| Topic: Turbosound TMS4 drivers |
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| Re: Turbosound TMS4 drivers [message #382470 is a reply to message #378717 ] |
Mon, 01 December 2008 10:28 |
Simon Ryder
Messages: 127
Registered: November 2004
Location: London UK |
Has No Life |
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Thanks for all the input guys, sorry it has taken me so long to reply, only came back a couple of days ago from the frozen North with no internet access.
You have given me much to go on. Thanks again.
Simon
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| Topic: Finding specs on a Yamaha speaker (for replacement driver) |
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| Finding specs on a Yamaha speaker (for replacement driver) [message #382464] |
Mon, 01 December 2008 09:37 |
George Knott
Messages: 5
Registered: July 2008 |
Newbie |
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Greetings everyone; I have a pair of Yamaha SV 10 speakers for my band (yes, I know, cheap bad sounding speakers). We have a 6 piece jazz band that plays acoustical (including no amp for the bass and guitar) and the speakers are used exclusively for vocals. For our needs they have worked out great.
I noticed the other day one of the woofers sounded a little scratchy and was thinking since these are basicly the cheapest PA speakers Yamaha makes they probably have cheap components in them. I have been toying with the thought that I might be better off replacing the driver with a higher quality one than have the existing one re-coned.
I cannot seem to be able to find any of the specs on the Yamaha website; will I just have to measure the box and crunch the numbers? Or can someone recommend a good replacement speaker?
For what it's worth I plan on replacing the Piezo horn with a Compression Driver in the future also.
thanks
George
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| Re: Finding specs on a Yamaha speaker (for replacement driver) [message #382471 is a reply to message #382464 ] |
Mon, 01 December 2008 10:29 |
Chris Hindle
Messages: 617
Registered: April 2004
Location: Montreal, Canada |
Has No Life |
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George:
New Woofer + compression driver (+ horn ! ) + time/labour to router out hole for horn to live in, Why ??
Cut your losses now, and just replace the box.
"Ya, whatever. Just stick a '57 on it, and get off the stage"
Chris.
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| Re: Finding specs on a Yamaha speaker (for replacement driver) [message #382485 is a reply to message #382471 ] |
Mon, 01 December 2008 11:20 |
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Jeff Babcock
Messages: 1475
Registered: September 2006
Location: Ontario, Canada |
Has No Life |
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+1
jeffbabcock.org
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| Re: Finding specs on a Yamaha speaker (for replacement driver) [message #382486 is a reply to message #382471 ] |
Mon, 01 December 2008 11:23 |
George Knott
Messages: 5
Registered: July 2008 |
Newbie |
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Chris, valid point. Don't think I haven't though about it; unfortunately economics plays into the decision.
The way I was thinking I might spend $100-$150 for a good woofer; $50-$100 for a Compression driver and $20 for the horn (I own a router); could I buy a better complete speaker for $270?
Plus being able to do it one piece at a time is appealing from a money stand point also.
FWIW the lowest I sing is D2 which is about 74 hertz.
Thanks
George
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| Re: Finding specs on a Yamaha speaker (for replacement driver) [message #382498 is a reply to message #382486 ] |
Mon, 01 December 2008 11:48 |
Art Welter
Messages: 692
Registered: October 2007
Location: New Mexico |
Has No Life |
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You forgot the crossover, a very critical part of the speaker, and by far the hardest part to diy. A compression driver will require a very different crossover than a pizza.
That puts you over $300 per speaker by your pricing, which seems about right. You could easily find something used that would be better than what you have now, and probably better than what you could cook up in that price range used.
A good place to find used speakers are the Music Go Round chain, and they might take your speaker on trade.
You can do some searching in the Lounge for endless discussion on the qualities of the less expensive options, but the best option is to play some music and sing through the speaker(s) you are interested in prior to purchase.
And you can't do that when you buy it one piece at a time.
[Updated on: Mon, 01 December 2008 11:55]
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| Re: Finding specs on a Yamaha speaker (for replacement driver) [message #382501 is a reply to message #382498 ] |
Mon, 01 December 2008 11:56 |
Chris Hindle
Messages: 617
Registered: April 2004
Location: Montreal, Canada |
Has No Life |
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| Art Welter wrote on Mon, 01 December 2008 12:48 |
You forgot the crossover, a very critical part of the speaker, and by far the hardest part to diy. A compression driver will require a very different crossover than a pizza.
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...ooops. haven't used a (passive) x-over in over 20 years !
As I am not in that end of the pond, I was thinking more like 250-350 woofer, 150-300 comp, 100-150 horn + 2 hours (or more - any internal bracing that interferes with the new components ? )per box, plus 2 crossovers.
George: Like I said, I am not in that end of the pond, so I have no suggestions for you. By my thinking, 700 put into a refurb job (per box) is NOT a good investment.
"Ya, whatever. Just stick a '57 on it, and get off the stage"
Chris.
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| Re: Finding specs on a Yamaha speaker (for replacement driver) [message #382519 is a reply to message #382486 ] |
Mon, 01 December 2008 13:10 |
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Jeff Babcock
Messages: 1475
Registered: September 2006
Location: Ontario, Canada |
Has No Life |
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| George Knott wrote on Mon, 01 December 2008 12:23 |
Chris, valid point. Don't think I haven't though about it; unfortunately economics plays into the decision.
The way I was thinking I might spend $100-$150 for a good woofer; $50-$100 for a Compression driver and $20 for the horn (I own a router); could I buy a better complete speaker for $270?
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George,
The numbers you are looking at spending on components will not get you very far, and you haven't thought about the crossover.
Put a WTB ad in the Marketplace with your budget.
Guaranteed you will find some used speakers that will be an upgrade over what you have.
As an example, you can often find Mackie SRM450's for around $300 used. They aren't my favourite speaker but at that price they would be a major step up and are self-powered to boot.
jeffbabcock.org
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| Topic: LS9 MIX BUS SETUP QUESTION |
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| LS9 MIX BUS SETUP QUESTION [message #382433] |
Mon, 01 December 2008 02:47 |
steve stark
Messages: 1
Registered: March 2007 |
Newbie |
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I mix FOH for a band on an Ls9 on a mono PA, use a few mix sends for band monitors, and am recording to the USB recorder via one of the mix sends.
I have all of my mix sends setup as mono, pre-fader.
I have two Q's for those of you who have had more time on the board, and are able to understand the diagrams in the manual better than me 
1)I want to be able to pan some of the instruments on the recorded mix send and get a stereo recording without affecting the pan in the FOH mix channel inputs.
2)If in the future I decide to have separate EQ/dynamics for the input channels being sent to the mix bus (I know I can change the mix send setup to pre-eq), will it effect the stereo recording (which one of you will help me to resolve in Q#1!)
Thanks for taking the time to respond,
Steve
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| Re: LS9 MIX BUS SETUP QUESTION [message #382436 is a reply to message #382433 ] |
Mon, 01 December 2008 04:52 |
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To set up a stereo aux mix, go to 'Mix Setup' in the Setup menu page and change the aux pair you need from 'Mono x2' to 'Stereo'. This will then change the function of the lower aux of the pair to pan and the higher aux of the pair to send level.
You can also setup where the mix is tapped off in this page. If you setup your auxiliaries to be pre-EQ, they will be unaffected by EQ and dynamics. If you setup your auxiliaries to be pre-fader, they will be affected by EQ and dynamics. You can change each pair of auxiliaries separately to be pre-EQ/pre-fader, so you could set your monitors to be pre-EQ and your record send to be post-EQ.
http://www.stevebunting.com/
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| Re: LS9 MIX BUS SETUP QUESTION [message #382443 is a reply to message #382433 ] |
Mon, 01 December 2008 07:02 |
Petri Mäntysalo
Messages: 242
Registered: April 2004
Location: Finland |
Has No Life |
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It is impossible to make a stereo recording from just one mix bus, so you have to use a stereo mix for that.
To avoid pan conflicts you could run your PA from the mono bus. That way you could pan the individual input channels for stereo recording and run them thru MONO bus (and fader) to the PA, as panning does not affect the MONO bus.
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