Jump to content
The Klipsch Audio Community
Sign in to follow this  
3thernet

Quadraphonic Klipsch La Scala System In Music Club

Recommended Posts

Hello Klipsch Audio Community,

 

I run a small independent music venue that hosts electroacoustic performances as well as club nights. Our house sound system is comprised of 4 La Scala speakers with 8 matching bass cabinets in a quadraphonic array. I have been running this system on budget (yorkville) amplifiers which have sounded great thus far, but I have recently decided to upgrade the amplifier to really get the room sounding as good as possible. The space is a second floor wood warehouse and the ceiling and walls have all been insulated with sound proofing material – the room sounds fantastic however I know that the amps are my current bottle-neck for making it sound even better.

So my question to the community is what amplifiers would be ideal in this situation, considering the speakers are used somewhat industrially (typically around 100 dBa). I'm especially intrigued by by switching to tube amps, however I don't necessarily care for legacy brands such as McIntosh where I feel like name adds a premium onto the cost... Or maybe I'm wrong?

(Please ignore speakers in centre of room)

7J8ipyk.jpg5wC7dvl.jpg

Edited by 3thernet
accidentally published before being complete

Share this post


Link to post
Share on other sites

Welcome to the forum.  I can't say that I've ever heard of those amps, prior to you mentioning them in your post so I have zero opinion if they are good or bad.  Do you have any pro audio shops around that offer other amps that you could try prior to purchasing anything?  You may not have a problem that requires fixing.

 

I also can't say that I've seen any commercial application with tube amps and if you're considering that, i would absolutely wait for some of the tube guys to chime in, and want to test amps out before dropping any coin.  

 

I might also consider what a sub/or subs, might do to really give the system a boost where needed.  Have you ever done any measuring in the room and what your current system is actually doing in the room?  That could also tell you a ton about what is and isn't going on and how best to approach improving things overall.

 

Just some thoughts for you to consider.  

Share this post


Link to post
Share on other sites

Have you thought about class D modules?  They are very efficient, meaning that they will produce a lot less heat when loaded, and therefore also last a long time without failures.  The gold standard in class D modules is currently Hypex Ncore, and there are several available used (already in enclosures) if you look at Hifishark.com.  The performance tests that I've seen on these modules is really outstanding. Additionally, ICEpower makes very good class D amplifier modules that cost much less than NCore.

 

I see a lot of pro amplifiers used in commercial venues, but I believe that a lot of that kind of thinking is simply based on past use of class A/AB type of topologies that have been around for decades. 

 

The issue with tubes is that they tend to fail from time to time, sometimes catastrophically.  I'd actually recommend tri-amping with a good DSP crossover in order to be able to limit overloads to the tweeters, to isolate the back EMF of the woofers from the midrange and tweeter circuits, and also isolate thermal heating issues (voice coils) to the woofers which tend to change the crossover frequencies and other characteristics when loaded heavily (and 100 dB is actually pretty loud). Tri-amping with DSP crossovers allows you to also correct for in-room EQ issues and correct the time delays of the non-time-aligned drivers.  If you'd like to know more about this approach, send me a PM.  I've helped quite a few people dial-in their setups (via email--you take the REW measurements in-room and email, I send back DSP crossover settings). This is done in a few iterations until the everything is dialed in to your satisfaction.  The result is much, much better than just substituting using tube amplifiers.

 

Chris

  • Thanks 1

Share this post


Link to post
Share on other sites
On 2/8/2020 at 10:58 PM, 3thernet said:

Our house sound system is comprised of 4 La Scala speakers with 8 matching bass cabinets in a quadraphonic array.

Welcome to the forums.  I'm not qualified to give you advice on a pro setup but I do have a question.

 

You say you have a quadraphonic array.  Quadraphonic is an outdated but specific audio format.  I rather suspect you mean four speaker w/bass cabs.  This might mean a 4-speaker setup, or four mono setups.  Can you clarify what you have in mind?  It might help the other guys guide you with what amps you might need.

+++

 

I'm hoping @Chris A will comment on this, but what about the idea of using a Berhinger 6000?  I think it can handle 4 La Scala's.  Or Crown, QSC, etc.  Cheap and easy for a non-audio engineer to use.

Share this post


Link to post
Share on other sites

As much as I like what tubes can do with LaScalas (or lots of other speakers), for the type of venue you are having, solid state, i.e., class a/b, or the newer class D amps of various types, would reall suit your needs better.

 

The LaScalas will still sound great. That should be an awesome room when finished.

 

 

  • Like 1

Share this post


Link to post
Share on other sites
On 2/8/2020 at 10:58 PM, 3thernet said:

 I have been running this system on budget (yorkville) amplifiers which have sounded great thus far,

 

 

Yorkville is the Canadian equivalent of Peavey or Traynor. Solid and reliable.

 

My main concern, if this venue is north of the border, is whether or not there is adequate ventilation for the byproducts from the intermission pastime!

 

I can’t walk the streets of The 6ix without getting a contact high from passersby...  

 

...now where did I put my munchies?

 

 

  • Haha 1

Share this post


Link to post
Share on other sites

Speaking to brand SS, it is a good time to mention Crown amps as

an alternative...

Share this post


Link to post
Share on other sites

I'd recommend a stack of four Crown XLS series; 1000 or 1002 will be fine.  You can use their built in crossover filters to cut the highs going to the extra bass horns and cut the lows below 40 Hz to your La Scalas.  Two bass horns on one channel is fine. 

 

I believe you will get more low bass it you will place the extra bass horns side by side on the floor, tight in the corner and the La Scala on top.  Besides room reinforcement, having the mouths as close as possible to each other makes them behave as though they were larger than they are.  Also, consider 3 bass bins and a La Scala in a cube in the front of the house for the ultimate in the mouth reinforcement effect and a bass bin and La Scala for support in the rear.  That might well get you to 40 Hz (low E) solidly in the front. 

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...