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Old 12th December 2011, 05:01 PM   #381
chrisb is offline chrisb  Canada
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Originally Posted by cogitech View Post
The high end response is there, certainly, but it is "rolled off" to a certain extent, giving a warm, laid back feeling by default. As you already know, Dave, this has had me wondering if I need to add a tweeter to my dual-EL70 Castle microTowers (or augment them in some other way), however I have been playing more with EQing and/or my treble control and I have realized that there really isn't anything (that I need) that can't be coaxed out of these drivers.

Perhaps hard to make them sound really "hot" at the high end, but that is not what I desire anyway.
As suggested in your other thread on the subject, I'd be inclined to simply try the CHP70s in the front facing location - at first you might even need EQ to tame the highest frequencies compared to what the EL70s are giving you now.
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Old 12th December 2011, 05:04 PM   #382
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Tripmaster,

Your bracing looks really neat!

What drivers are you putting in these? The vents look sized for CHR-70.x though.
Thanks zman, yes CHR-70.
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Old 12th December 2011, 05:13 PM   #383
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Originally Posted by cogitech View Post
Nice job so far. I would say that generally speaking the stuffing/lining looks inadequate for optimal sound. Are you planning to add the same white lining to the back wall as well? I highly recommend doing so. And yes, by all means add good quality stuffing from behind/below the drivers all the way down to the bottom of the first holey brace (at least).

I used 2" fibreglass insulation for 3 interior walls and stuffed with "Supreme" Polyfil from the rear of the drivers down to the bottom of the second holey brace and these seemed to be optimal for my particulr pair of microTowers. However, I used 18mm baltic birch and I am running EL70 drivers...

Since it appears you are not making any of the panels removable, you would be wise to attach the rear panel with some bluetac and do some testing and stuffing adjustment while the speakers burn in.
Thank you Cogitech

I have glued 1" to two sides, full length and the top. I was going to buy a couple of cheap pillows and remove the stuffing for the spks. Does this work okay?

My friend will not to spend too much more, but it ofcourse it needs to sound good.
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Old 12th December 2011, 05:16 PM   #384
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As suggested in your other thread on the subject, I'd be inclined to simply try the CHP70s in the front facing location - at first you might even need EQ to tame the highest frequencies compared to what the EL70s are giving you now.
Sorry, I meant CHR-70.3 (not CHP). I am sure you meant this as well.

But yes, I still might do this. I have nothing to lose by trying it, since either way I will end up with an extra pair of excellent drivers for my next project. Only time will tell whether the extra pair will be EL70 or CHR-70.3
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Old 12th December 2011, 05:22 PM   #385
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Originally Posted by Tripmaster View Post
Thank you Cogitech

I have glued 1" to two sides, full length and the top. I was going to buy a couple of cheap pillows and remove the stuffing for the spks. Does this work okay?

My friend will not to spend too much more, but it ofcourse it needs to sound good.
I had the same idea to buy cheap pillows, but then I read a thread by zman01 about stuffing his Castles. he tried a whole bunch of different stuffings and found that they dramatically changed the sound (both bass and treble). I cannot recall what he ended up using, but this thread convinced me to buy some quality stuffing. I bought a bag of "Supreme" Polyfil stuffing at "Michaels" (a craft store). I paid close to $9 for the bag and I am very happy with the sound of my speakers.

Having said all this, there is a chance that the cheap pillows will have stuffing that is just as good or better (and I have wasted $9). There's no way to know without trying...

I highly recommend burning the speakers in gently over a long period of time (a couple hundred hours) before doing a full assessment/adjustment of stuffing, and then finally when you are happy, seal up the boxes.
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Old 12th December 2011, 06:32 PM   #386
chrisb is offline chrisb  Canada
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Originally Posted by cogitech View Post
Sorry, I meant CHR-70.3 (not CHP). I am sure you meant this as well.

But yes, I still might do this. I have nothing to lose by trying it, since either way I will end up with an extra pair of excellent drivers for my next project. Only time will tell whether the extra pair will be EL70 or CHR-70.3

actually, yes that is what I meant - you get to my age and even though they're not that close on the keyboard, you often end up "P"-ing unintentionally
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Old 12th December 2011, 06:45 PM   #387
von Ah is offline von Ah  United States
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har har. :P
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Old 12th December 2011, 07:55 PM   #388
chrisb is offline chrisb  Canada
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actually, yes that is what I meant - you get to my age and even though they're not that close on the keyboard, you often end up "P"-ing unintentionally
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har har. :P

and gentlemen, given the invitation for a TRUS prostate biopsy - politely decline, but do accept samples of the little blue or yellow pills
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Last edited by chrisb; 12th December 2011 at 07:59 PM.
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Old 12th December 2011, 08:14 PM   #389
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Quote:
Originally Posted by cogitech View Post
The high end response is there, certainly, but it is "rolled off" to a certain extent, giving a warm, laid back feeling by default.
It is harder to get the HF extention in a paper cone.

dave
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Old 12th December 2011, 08:16 PM   #390
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I would say that generally speaking the stuffing/lining looks inadequate for optimal sound.
+1

dave
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