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Multi-Way Conventional loudspeakers with crossovers

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Old 1st December 2012, 11:48 PM   #71
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Strange then , to add that comment right after a measurement of another speaker where You would be hard tested to find much outside a +/- 3dB span between 50-10k, but that seems to have become the new diyaudio environment, an absolute negativity, a lot of now it all, a lot of you cant do that, not much left of the friendly open and helpful comunity that was here when i, by mistake, fell out of here last time.

Whatever these knowitalls think, these spakers are good, to my ears, the Morel drivers are really good so the selfaclaimed experts can surely do something even better than my humble excersises whith them.

I thought this was a place to share, help and encourage, that was utterly wrong, this is a place where narrowminded nobodys thrive on trowing their frustration on anyone who present an idea or design that departs from their main route.

There´s nothing worse, or more dangerous, in this world than morons.

Signing out, for good.

Ingvar
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Old 2nd December 2012, 12:15 AM   #72
system7 is offline system7  United Kingdom
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Ingvar, take a deep breath and cool down. I nearly made my own signature: "Casting Pearls before swine..." on occasion.

Now having just been involved in an Epos ES-12 thread where there is no bass filter whatsoever, and only a 2.2uF cap on the tweeter, there is something to be said for your simple filters.
Epos ES-12 - what modifications?

Can we hear more about your new little speaker? It looks nice. Birch ply box?

Click the image to open in full size.
Attached Images
File Type: jpg Morel_CAW-638.JPG (82.0 KB, 201 views)
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Well, there it is! Best regards from Steve in Portsmouth, UK.

Last edited by system7; 2nd December 2012 at 12:29 AM. Reason: Corrected Typo, just my Aspergers...LOL
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Old 2nd December 2012, 12:15 AM   #73
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Ingvar,
Come on over to my thread. Your input and wit is much appreciated over there. I am not saying i will listen, but i do enjoy the company. Plus, I like your boots
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Old 2nd December 2012, 01:22 AM   #74
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Quote:
Originally Posted by ingvar ahlberg View Post
Strange then , to add that comment right after a measurement of another speaker where You would be hard tested to find much outside a +/- 3dB span between 50-10k,
Yes but perhaps he read the first couple of posts and posted his reply before reading the rest of the thread As I said the first graph (as far as I am aware) was in room, so of course it is going to have big dips and peaks

The latest speaker looks very nice indeed Ingvar! Please keep posting

You might want to PM Terry (phoenix358) diyAudio - View Profile: pheonix358 he hasn't been online for a while (if he had I'm sure he would have posted in your thread). He has a lot of experience with Morel drivers and pretty much does as you have been doing. ie very simple crossovers.

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Old 2nd December 2012, 07:55 AM   #75
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-8 deg c, a clear blue winter sky, zero wind, quite a bit higher bloodconcentration in the alcohol system, things look different.

We´re closing in on that time of the year when it´s even more important to behave well towards others, something i have a hard time with, but i´ll try my best.

The tiny Jake speaker, designed for our guestroom and on demand from diy friends in Sweden, is indeed built in 18mm birchply.

Net volume about 13L, port 200x25mm, 418mm long. As the Morel drivers can handle quite some power these can play really loud on demand, thus the sidewalls are lined with 0.5mm leadfoil to overcome the "transparency" the ply has around 400Hz.

The lf unit seems very well built, the cone is actually turned.

Click the image to open in full size.

Back soon, have to heat up some glögg (gluewein).
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Old 2nd December 2012, 08:21 AM   #76
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Easy on the glog I don't think you mentioned which drivers these were Ingvar?? I don't recognise either of them.

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Old 2nd December 2012, 08:40 AM   #77
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The drivers are, lf EW638 and hf ST728.

Will try to go easy on the glögg.
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Old 2nd December 2012, 09:43 AM   #78
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You did step it up a notch (or three) especially on the tweeters!! I like the look of those new uniflow baskets, much less restricted than the traditional morel drivers.

Tony.
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Old 2nd December 2012, 09:52 AM   #79
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Plus, I like your boots
Me too, those in the avatar are Sarria, from Mexico, only use this brand and Sendra, handmade in Spain. As this is the only kind of footwear i use and they are suboptimal in the Swedish westcoastwinter with rain and mushy snow i wear out at least two pairs a year.
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Old 2nd December 2012, 01:33 PM   #80
system7 is offline system7  United Kingdom
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Ah, good. Everybody chillin' out to their favourite ABBA record now. ABBA could have been named FABB, of course. Harmony restored and no-one ripping apart low order crossovers.

Lead sheets, eh? Joachim Gerhard likes a solid metal base screwed on to his Sonics Anima speaker. Must do something similar...

Click the image to open in full size.

Time alignment helps with low order filters. You wire the tweeter out of phase and phase is then really good:

Click the image to open in full size.

Those Morel drivers are top notch:
Morel EW 638 Woofer
Morel ST 728 Tweeter

The woofer reminds me of the Visaton W200S 4 ohm frequency response which works rather well on first order, albeit a bit of cone breakup getting through.
Attached Images
File Type: jpg Morel_Elite_EW638.JPG (114.0 KB, 18 views)
File Type: jpg Morel_Supreme_ST728.JPG (99.4 KB, 16 views)
File Type: jpg First_Order_Sim_FR.JPG (61.4 KB, 23 views)
File Type: jpg First_Order_Sim_Phase.JPG (54.8 KB, 24 views)
File Type: jpg First_Order_Sim_Network.JPG (20.1 KB, 23 views)
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