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Old 10th January 2011, 05:35 PM   #661
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Default North American waveguide group buy - checking interest.

To Elsinore owners and builders in North America,

Should we consider a group buy of the waveguides required for Mk 5? I don't know what the availability of the guides will be and production capacity of the maker in Australia. But if there is enough interest we could start a GB thread and work out the details.

Please post here if you are interested in a GB for the wave guides (hope this is acceptable Joe and mr. moderator).

Francois
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Old 10th January 2011, 05:55 PM   #662
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Francois G
Let's PM when you get them finished. A drive to IL may be in order.

Mike
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Old 10th January 2011, 11:11 PM   #663
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Quote:
Originally Posted by Francois G View Post
Joe,
I'm just about to finish my Mk 4's but I think I will take a break and wait for the new plans -
Francois
That would be good as then, when you upgrade from Mark 4 to Mark 5 you can post your impressions. I look for2ward to that.

Cheers, Joe R.
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Old 10th January 2011, 11:30 PM   #664
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Quote:
Originally Posted by soongsc View Post
Joe,
Have your tried simulating it with a howland current pump type of drive?
No I haven't actually used the amp, but simulated? Yes. I am extremely confident that it will work very well indeed.

Simulated current drive with 100R and the response changed less that -/+ 0.25dB from 30Hz and 20KHz. With simulated 1000R it is -/+ 0.3dB, but now from below 20Hz and to any frequency above that. At >1000 Ohm makes no difference above that source Z.

So current drive is something this speaker will love. But what is important oto is that many of the benefits will also be there with voltage drive. This may well be the most amplifier friendly amplifier you are going to see in a long time.

Cheers, Joe
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Old 11th January 2011, 12:47 AM   #665
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Quote:
Originally Posted by spoonted View Post
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.
Right about the finish, it's hard work if you want it to look good.

Re Damping Material, Can you get your hand on this:

PolyMax, Pure Bonded Polyester Fibre by Martini and rated R3.0

Note it is "acoustic" in the title description: "Thermal & Acoustic Insulation Batts."

Got the whole bag for $80, so plenty left over for other projects or helping others. This stuff is easy to work with, not hard on your hands and what I am using now.

You could call him on 0414-371163 here in Sydney and he may be able to tell how much to send to WA o maybe even better help you to find a place in WA that has it. Maybe he could give you Martini's phone number or where he orders it from.

If you call him, I seem to recall his name is Dave, Dave Burnett, let us know here how it worked out.

Cheers, Joe
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Old 11th January 2011, 12:58 AM   #666
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Quote:
Originally Posted by donkt88 View Post
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?
Don't worry about the tweeter. It is now known a Scan-Speak Discovery

Look at it as the exact same tweeter. So they should be available locally to you.

More than just a replacement, this tweeter was always made by Scan-Speak but sold under the Peerless name. They now sell it under the Discovery name as they have separated from Tymphany that owns Peerless, so they could hardly continue using the old Peerless name and hence now call it Discovery.

www.scan-speak.dk/datasheet/pdf/d2608-913000.pdf

Madisound and Parts Xpress etc, you should have no problems finding them from the usual suspects.

https://www.madisound.com/store/prod...oducts_id=1744

Cheers, Joe R.
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Old 11th January 2011, 12:52 PM   #667
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Quote:
Originally Posted by Francois G View Post
To Elsinore owners and builders in North America,

Should we consider a group buy of the waveguides required for Mk 5? I don't know what the availability of the guides will be and production capacity of the maker in Australia. But if there is enough interest we could start a GB thread and work out the details.

Please post here if you are interested in a GB for the wave guides (hope this is acceptable Joe and mr. moderator).

Francois
Yes, that may well be a good idea. Open to any suggestions.

Also, for those who made the Mark 1 to Mark 3 there is also a 25mm Filler Panel. That way all previous versions can be updated to Mark 5.

Cheers, Joe
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Old 11th January 2011, 12:59 PM   #668
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Quote:
Originally Posted by spoonted View Post
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
They are the black PPP (laminated cone). It is cheap, but do go for the Nomex version 830875 @ $52.61.

Cheers, Joe
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Old 11th January 2011, 10:39 PM   #669
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Both my brother and I will be upgrading to the mark 5. Looking forward to its release.
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Old 14th January 2011, 06:27 PM   #670
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Default Checking Mk5 wave guide GB interest - Bump

BUMP

Quote:
Originally Posted by Francois G View Post
To Elsinore owners and builders in North America,

Should we consider a group buy of the waveguides required for Mk 5? I don't know what the availability of the guides will be and production capacity of the maker in Australia. But if there is enough interest we could start a GB thread and work out the details.

Please post here if you are interested in a GB for the wave guides (hope this is acceptable Joe and mr. moderator).

Francois
Hey North Americans,

I know there are more of you Elsinore builders out there. Please post or send me PM if you are interested in a group buy of the upcoming Mk 5 wave guide.

So far there are 4 that registered interest - if we could gain a few more we will move to the GB forum

Thanks,

Francois
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