Crown vs Lab Gruppen
Printed From: Speakerplans.com
Category: General
Forum Name: Amp Forum
Forum Description: The 'Stopping Jake Fielder moaning constantly' forum description...
URL: https://forum.speakerplans.com/forum_posts.asp?TID=103699
Printed Date: 23 April 2024 at 11:36pm
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Topic: Crown vs Lab Gruppen
Posted By: ceharden
Subject: Crown vs Lab Gruppen
Date Posted: 10 May 2019 at 11:47pm
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Here's one for you: A live music venue needs to power (bi-amp) a pair of EV Eliminator/ Shuttlesound Motivator 2x15" + 2" mid-high cabs. They have available: Crown Macrotech MA2400 and MA600 3x Lab Gruppen LAB1600 I'm not interested in any comments about buying other amplifiers. What configuration would you choose? Some of them have already been done in the past.
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Replies:
Posted By: FOO
Date Posted: 11 May 2019 at 12:25am
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Depends on sound quality vs spl/Grunt requirement. Best sound = LAB1600. Two bridget on 15", and one in stereo on 2". Most grunt = MA2400 on 15", and one LAB1600 on 2". Maybe two LAB1600 bridget on 2".
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Posted By: ceharden
Date Posted: 12 May 2019 at 12:31am
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The LAB1600 and MA2400 have the same power output into 4R on paper (about 800W). The venue was originally running MA2400 and MA600 until they changed to bridged LAB1600 on the midrange. The current house engineer is worried that it's too much power (about 1600W @ 4R bridged) as the drivers are a bit on the vintage side. I'm going to suggest that they run one LAB1600 per side, midrange on one channel, HF on the other if they don't want to run bridged. |
Posted By: Chris Grimshaw
Date Posted: 12 May 2019 at 11:37am
Good idea. Drop an amp behind each cab and you keep the speaker cables nice and short. That said, there's nothing wrong with too much power so long as the limiting is up to scratch. Chris ------------- Quality sound from Sheffield www.grimshawaudio.com |
ceharden wrote:Posted By: csg
Date Posted: 12 May 2019 at 6:54pm
Not such a good idea in an install - speakers are usually flown, and the air is usually warm and dirty / full of smoke or haze. that's why every good install has its amplifiers in an amp room / plant room / office etc ------------- “The fact is this is about identifying what we do best and finding more ways of doing less of it better” |
Posted By: toastyghost
Date Posted: 12 May 2019 at 9:01pm
Not to mention that the actual power loss on even 2.5mm cable is basically negligible Vs thermal compression unless your run is over 40m long |
Posted By: ceharden
Date Posted: 12 May 2019 at 10:08pm
| The amp room is directly behind the stage. The cable run is about 5m to one stack, 10m to the other. Not an issue. |
Posted By: Elliot Thompson
Date Posted: 13 May 2019 at 5:16am
When you hear a client says this, never offer more power. If anything goes wrong, the client will put the blame on you. The Crown Macro-Tech 2400 (On the bench) should give you anywhere from 950 – 1000 watts per channel @ 4 ohms RMS pending on how much current you have available.
Best Regards, ------------- Elliot Thompson |
Posted By: Chris Grimshaw
Date Posted: 13 May 2019 at 10:21pm
Yep, fair point. In this case, I agree that the practicalities should outweigh chasing that last tiny bit of performance. Chris ------------- Quality sound from Sheffield www.grimshawaudio.com |