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Multi-Way Conventional loudspeakers with crossovers

The "Elsinore Project" Thread
The "Elsinore Project" Thread
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Old 30th December 2010, 08:41 PM   #651
spoonted is offline spoonted  Australia
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Just in case anyones interested i noticed parts express has the 830874 on sale for $39.00

Peerless 830874 6-1/2" PPB Cone HDS Woofer | Parts-Express.com
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Old 3rd January 2011, 12:07 PM   #652
Korbah is offline Korbah
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Hey Spoonted - really interested in seeing some more pics of your build, crossovers, finish etc

Keep us posted!
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Old 5th January 2011, 12:53 PM   #653
Joe Rasmussen is offline Joe Rasmussen  Australia
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Elsinore Mark 5 Announcement:

Well, it has been some road... and a lot of effort to get the Mk5 under way.

There will be some significant differences, all earlier versions are upgradeable, but this annnouncement is limited to as follows.

1. Should have details published hopefully before end of January.

2. Necessitates the use of a Waveguide.

3. The Waveguide will be available to buy as it can be tricky to make.

4. The Waveguide will be supplied un-painted with easy suggestions of how to finish it. This will keep the cost down and also add to the DIY factor.

4. The Crossover is rather different from earlier versions, but older ones can be rebuilt. Some parts will be redundant and other new ones required.

5. The changes also has a welcome side benefit, the Mk5 definitely is more sensitive.

6. The changes also lower critical forms of distortions.

This may well be the last version of the Elsinores. But one should never say never. So I will not make that a total prediction.

Some may like to know what the sonic improvements are like. As I am at the centre of this I am hardly entirely objective, but I think you will find that in virtually all areas the Elsinores are improved. I do know this, their dynamics with the JLTi 30 Watt tube amp are positively frightening in my room.

There were certain goals that have been built into the new version where current delivery to the individual drive units have been a primary focus (and the solution surprisingly simple but only a lot of computer modelling revealed that) to increase the current index to the drivers. So the Elsinores are now far more linear in their current demand from the amplifier. Keep in mind that it is current that goes to the speakers that creates the sound, not voltage.

Because of this they are more amplifier friendly than ever before.

With tube amps the bass is now also more accurate where in some cases a touch too plummy, and this has been verified by Steve (who makes the waveguide and heard prelimary early results) with JLTi 30 Watt tube amps, and the overall tonal balance is better with both SS and tube amps. They may now actually be better with tubes than SS in the bass, a bit of a reversal.

Also, overall, the Elsinores have much lower distortion in the area just above 1KHz where the ear is most sensitive. It is also at those frequencies linear current delivery was maximised as that is where it is most audible. We need to fool the speakers into thinking it is eating current and not voltage.

Steve will be making the waveguides available this month, and once they are I will need to start posting so you fellows can get under way.

As before, it was always the intention that earlier Elsinores, even Mk1, can be updated. But Mk5 is the most radical upgrade so far.

This may also work out to be the reason why Mk5 will be the last and complete testament to the theories that started them off on this long trek.

Cheers, Joe R.
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Old 5th January 2011, 05:27 PM   #654
Francois G is offline Francois G  United States
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Quote:
Originally Posted by Joe Rasmussen View Post
Elsinore Mark 5 Announcement:

Well, it has been some road... and a lot of effort to get the Mk5 under way.

There will be some significant differences, all earlier versions are upgradeable.....

Cheers, Joe R.
Joe,

This sounds very exciting! Thanks for your continued efforts to perfect the Elsinores, and keep the progress upgradable.

I'm just about to finish my Mk 4's but I think I will take a break and wait for the new plans - will be easier to upgrade that way. Unfortunately I will never know how much of an improvement Mk 5 was over Mk 4.

Thanks and best wishes,
Francois
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Old 5th January 2011, 11:46 PM   #655
soongsc is offline soongsc  Taiwan
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Joe,
Have your tried simulating it with a howland current pump type of drive?
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Old 9th January 2011, 01:11 AM   #656
spoonted is offline spoonted  Australia
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Quote:
Originally Posted by Korbah View Post
Hey Spoonted - really interested in seeing some more pics of your build, crossovers, finish etc

Keep us posted!
Yep no worries i have the cabinets primed in 2pak and rubbed down with 800 paper.
To get a decent painted finish on MDF requires a fair bit of work though.

Once Joe has finished, and i can get my hands on a new waveguide i,ll be looking at finishing the the paint on the cabinets along with the mark 5 crossovers.

Also still undecided on the damping material to use from whats available over in WA, postage costs are over $100 for a Bag.

What would i of done different ? After reading the 66 pages of this thread yet again wish i had sourced the HDF for the front panels i think this would be make a noticeable improvement.

Cheers spoonted
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Old 9th January 2011, 02:54 AM   #657
Mike Gergen is offline Mike Gergen  United States
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Anybody have a pair in the Mid-West; MN, IA, IL, MO, ND, SD, etc.

I'd love to hear a pair. I've been contemplating building a set for a couple years.

Mike
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Old 10th January 2011, 02:59 PM   #658
donkt88 is offline donkt88  United States
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Default Looking for tweeters

Madisound and Parts-express does not show that they carry the Peerless HDS 810921 tweeter. Any idea where I can get these in the states?
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Old 10th January 2011, 04:01 PM   #659
mantraxl is offline mantraxl  United States
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The tweeter is now sold as a scanspeak product.

In other news, I was about to pour my concrete cabinets, but I think that I will hold off until the unveiling of the mk 5.
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Old 10th January 2011, 05:23 PM   #660
Francois G is offline Francois G  United States
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Quote:
Originally Posted by Mike Gergen View Post
Anybody have a pair in the Mid-West; MN, IA, IL, MO, ND, SD, etc.

I'd love to hear a pair. I've been contemplating building a set for a couple years.

Mike
Hi Mike,

My enclosures and crossovers are done except for finishing. I'm now waiting for the Mk 5 details before I will wrap it up. With any luck you could hear them somewhere in Feb - March, as soon a I could source and install the wave guide.

I'm in Champaign, Illinois - long way from Minneapolis, unless you have other business in this direction.

Francois
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