Croc
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Posts posted by Croc
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so what about putting another layer of plywood on the side walls?
doesn't it ruin the magic of La Scala's?
i see that locally we have birch with thickness of 8mm or 12mm - which one to go?
the original side wall thickness is 19mm.
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it's just something to make the gap slimmer to make balls work (tennis balls are smaller than the gap).
you can use anything stiff.
i had on hand some styrofoam stuff which i used.
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Don't mean to hijack your thread, and I'm sure this is a well known "hack" but what's up with the tennis balls?
this:
it reduces side walls vibrations and makes a noticable difference.
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I'm from Israel - so getting other LS will be crazy expensive.
i love sound of mine (they're moded with xover, tweeter and mid horn) - so i kust need to fix their looks
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Hey,
After owning La Scala's for over 10 years it's a time to get them look perfect.
I will stain them or re-veneer them.
Greg's brace will repalce the ugly DIY front brace and tennis balls.
Since cabinet resonanses are an issue - i wan't to use this opportunity to stiffen the box.
I thought definitely to put some MDF on the rear wall - it's resonates as crazy.
What about side walls? Shall i put a layer of plywood? or MDF? What thickness?
This would definitely make easier to repair wood chips and corners - but i don't want to "kill" the cabinet complitely as i assume it can sound too dry/boring.
Bear in mind that Greg's braces will be used - they already should reduce side walls resonances.
Any other tips would be greatly appreciated!
Thanks,
Gennady
Some pictures:
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i love Fastrac.
IMO it makes LS almost perfect speaker.
if i get Hersy of course i will have to get the same tweetr (2404) and same horn (Fastrac).
so the question now whether those are "plug&play" on Heresy? (on LS they are)
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if get them i assume i would need to put same JBL 2404h tweeter that i've put in La Scala's.
is 2404 the same plug&play fit in Heresy too?
the Heresy's in question are from 1974.
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i didn't want to cut the cabinet - so i went the SUB route.
but i agree it takes a good sub to make a smooth matching with appropriate air volume and speed.
and with no smooth matching - i don't want suhc sub at all. bad matching dives me crazy.
Velodynes move a lot of air - but i doubt they would smoth match LS.
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is Heresy's bass unit also crossed at 400 hz as it is in La Scala?
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Hi,
i use La Scala's for the stereo.
They have upgraded xovers, tweeter and fastrac modrange horn.for the HT i don't have a center speaker at all.
Now i've come across locally at pair of Heresys - if they sound tone similar to La Scala i would use one as center speaker.
So the question - do they sound similar?
Especially in treble, midrange and dynamics?Bass obviuosly will be different - but this i can compensate in HT processor.
Thanks!!!!
Gennady -
just to update and close the loop - eventually i went for Dave's Fastrac 2 horn.
they achieve what i was looking for - natural midrange with high clarity and low distotion plus seamless integration with the bass section.
i wasn't aware that stock K55 phenolic driver sounds so good...
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1. i had AA originally and A sounds to me way better.
2. still i'm curious how this suppose to make 511 work in LS given neither of them is good in 400-500 Hz range (according to what's been stated in this thread).
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it looks to me that 511 is too much incompatible with La Scala. i'm more and more leaning to getting Fastrac 2 horn which according to Dave is completely "plug and play"...
...What you are trying to do would have been plug and play if you had an ab-2 or al-2/al-3 network.i don't want to go for radical xover change - so just being curious - how this would work?
i've seen in this thread that 511 doesn't go very well below 500 hz and La Scalas bass bin doesn't go very well over 400 hz... -
it looks to me that 511 is too much incompatible with La Scala.
i'm more and more leaning to getting Fastrac 2 horn which according to Dave is completely "plug and play"...
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following pictures of my xovers.
don't look at "type AA" writing as i removed some parts os they should be type A now. -
following pictures of my xovers.
don't look at "type AA" writing as i removed some parts os they should be type A now.
http://sites.google.com/site/crocweb/Home/stereo/audio_pictures/P1010861.JPG
http://sites.google.com/site/crocweb/Home/stereo/audio_pictures/P1010862.JPG
http://sites.google.com/site/crocweb/Home/stereo/audio_pictures/P1010863.JPG -
following pictures of my xovers.
don't look at "type AA" writing as i removed some parts os they should be type A now.
https://sites.google.com/site/crocweb/Home/stereo/audio_pictures/P1010861.JPG
https://sites.google.com/site/crocweb/Home/stereo/audio_pictures/P1010862.JPG
https://sites.google.com/site/crocweb/Home/stereo/audio_pictures/P1010863.JPG -
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i did not made any changes yout to my xover - it's "pure" Type A.
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what do you mean by that?
the problem currently that it doesn't sound 100% right.
since you enlightened me that 511 and K400 have different frew responce - i think this should be solved.
how? sounds to me that moving xover point from 400 to 500 is required.
but i'm not 100% sure as i'm not speaker design expert.
so expirienced guys' input will be highly appreciated.
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an update - abvout a month ago i installed Bob's midrange gaskets and it tamed the mid bass problem.
apperantly the opening of the gasket is smaller than k55 throat - so it's probably a must item to use as it affects sound a lot.anyway - it looks like i really missing something - 511 horn doesn't get down to 400 Hz as k400 does - so probably i'm having a 100 Hz "whole" (thx to speakerfritz for pointing this out).
and indeed it sounds now like not enoough energy in the mid bass (i hope it's not psychological [
]).i don't understand in xovers - so pls tell me is it possible to raise woofer to 500Hz?
or maybe it's just better to go for "drop in" solution such as Dave's Fastrac horn?
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i see.
what wattage/voltage shoud resistor and cap be?
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so what's the verdict?
mit attenuation or xover point move?
resistor or cap?
what wattage/voltage shoud it be?
]).
V.T.L. Ultimate pre-amp sound evaluation
in 2-Channel Home Audio
Posted
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