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Multi-Way Conventional loudspeakers with crossovers

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Old 23rd June 2020, 12:18 PM   #11
grayxxx is offline grayxxx  United States
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In my picture post the low /mid/high are separate. I will make the midrange cabinet with front panel removable so I cant change out the items loaded in the midrange cabinet if my vision of what I want shifts or my conclusion about the enhanced midrange...Well Chris...
was adjusting something else the EQ and the base is a given.....and the crystal clear highs were a given....I first thought about adding a 1 more 10" speaker per side for total of 4-
10" speakers for not really volume but what would be a certain % of a enhanced midrange. Midrange not a give sound like the bass a given sound as the highs. My though have changed to poss. use instead of 2 - 10's per side...is use the 10" speaker JBL and a Horn lens midrange which would give the character of both midrange items a speaker midrange and the horn midrange character....with Potentiometer adjustment on both midrange items the speaker and the horn lens to be able to

tweek....... maybe the horn lens just in the back ground, the lens their for the enhanced midrange quest, or the lens adjusted up and the 10" midrange speaker adjusted to back.. What do you think Chris661.......Chris I want you to spill everything you
have ever done with a speaker....and never told anyone.......lol

thanks
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Old 23rd June 2020, 05:22 PM   #12
grayxxx is offline grayxxx  United States
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Default Mid array filtering

Quote:
Originally Posted by Pano View Post
2x10" per side does not seem like a good idea. Comb filtering is going to hurt you, at least at the top of the midrange. I have seen it done on line array speakers with 2x8" and a horn in the middle. You'll need to be careful about crossover points and such.

Pano...You are sending out negative psychic waves.......on a speaker site....Im kidding....The type music I listen to and the volumes....Fusion Jazz....Alan Holdsworth....Virgil Donati drummer, composer....Thanks for the tip Pano...
will take that in....
thanks

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Old 23rd June 2020, 06:36 PM   #13
grayxxx is offline grayxxx  United States
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Quote:
Originally Posted by Pano View Post
2x10" per side does not seem like a good idea. Comb filtering is going to hurt you, at least at the top of the midrange. I have seen it done on line array speakers with 2x8" and a horn in the middle. You'll need to be careful about crossover points and such.

Out of curiosity Pano.....do you remember the crossover point of the 8" mid speaker and the Mid horn....?? and just what was going on with those two....in system..
thanks.................
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Old 24th June 2020, 02:18 AM   #14
grayxxx is offline grayxxx  United States
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Quote:
Originally Posted by GM View Post
Hmm, what are the XO points/slopes?

GM
Im not sure yet GM......not close to your voice theater

Click the image to open in full size.
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Old 24th June 2020, 05:15 AM   #15
GM is offline GM  United States
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Location: Chamblee, Ga.
OK, mids = 250-2 kHz = [250*2000]^0.5 = ~707 Hz acoustic power distribution mean = ~34400/pi/707 = ~15.5 cm dia. = closest to an 8" frame size. Dual 8" = ~377.38 cm^2 [Sd] = closest to a 10".

If a 1 kHz XO, then a 500 Hz acoustic power distribution mean = ~34400/pi/500 = ~21.9 cm dia. = closest to a 10" frame size. Dual 10" = ~753.35 cm^2 [Sd] = closest to a 15", so in the end probably better off adding another 15" and try rolling off the lower one [2.5 way] wherever baffle step dictates if running them to 1 kHz causes any 'blurring' of the 500 Hz-up BW.

FWIW, my last Altec speakers were dual 15" tuned to ~14 Hz, 500 Hz/2nd order XO with powerful/razor sharp clarity [14 ft min. listening distance on axis], but never tried with a higher XO point and/or higher order, so 'caveat emptor' applies.

WRT [four] of either 8" or 10", you're on your own unless your listening distance is way longer than mine as that's just too much comb filtering for me and my tinnitus.

GM
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Old 24th June 2020, 02:01 PM   #16
diyiggy is offline diyiggy
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Question sorry for the noob, but why not

@grayxxx,

I know there is a controversal about MTM, but why not ? there was a TAD like that with the gorn is the midle. Maybe the "flater" - less lobbing- front acoustical distribution of a MTM could help :8"/10"-your tweet- 8"/10" ? And ugly but idealy the 15" above ?


Wow : I want a A4 for my 14' listening distance ... nice picture, btw.
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Old 24th June 2020, 02:38 PM   #17
fatmarley is offline fatmarley  England
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Quote:
Originally Posted by grayxxx View Post
Thinking of the below picture design the "midrange" has one 10" speaker, per side.
Was thinking of 4 -10" speakers or 8" speakers for "midrange" with JBL

len drive 076 len on highs or lens 2425 driver....etc...
Bass 15" JBL 2225H...................................thanks for "midrange" input.]
I remember seeing those at the Scalford hifiwigwam show.

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Old 24th June 2020, 07:13 PM   #18
grayxxx is offline grayxxx  United States
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Fatmarley dude.....You might be having hot flashes........thanks for your response....
I really appreciate your attached photo allot.....I want you to go over to the DIY Audio
"mess hall" lunch is on me, drinks to well 4 drinks.....and a "honey bun".......and one
pack of gum........
thanks
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Old 25th June 2020, 12:11 AM   #19
grayxxx is offline grayxxx  United States
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diyiggy.....I think you might need to turn yourself into the closest re-indoctrination center
for some type of speaker treatment. They have Altec wall paper where you can do your living wall into a Altec A4 wall......lol
thanks diyiggy................gray
Click the image to open in full size.
Can anyone tell me where I could find a pair of Altec A4 cabinet plans?

Best,

Jeff
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Old 25th June 2020, 12:16 AM   #20
diyiggy is offline diyiggy
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Wooooooow My dream... if there is a paradise after I want to be transported there !

And Imagine some KlangFilms just in the wall behind the photographer, lol !
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Last edited by diyiggy; 25th June 2020 at 12:19 AM.
 

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