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1x18 tapped horn

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AndyWave View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AndyWave Quote  Post ReplyReply Direct Link To This Post Posted: 29 August 2014 at 5:08pm
I modeled LF21N551 in AkAbak, and compared it to void 18V1000. Void gives lower notes with higher sensitivity than the RCF. Maybe because void has lower Fs and other parameters.

RCF is kind of a monster, what was that good price? (and from where?)

SPL-wise RCF is more louder. No wonder with higher power handling and bigger cone area+Xmax.

My design is mainly extracting everything outta void driver in tapped horn configuration, and I don't believe that swapping drivers with your eyes shut gives good results.

My options were not to buy psychos because I'm such poor bastard, so DIY saved lot of cash, and I'm crazy enough to lug such big and heavy boxes around, and have access to old Mercedes 612 with lift LOL

Last time my subs were used outside, with live rock'n'roll band, party host came to talk me and said it was really some few years ago when he'd felt the bass drum grabbing not only his pants but T-shirt sleeves as well.

FohGuy also said "You've built good stereos, pitty my missus won't let me take 'em to my living room"


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tv00 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tv00 Quote  Post ReplyReply Direct Link To This Post Posted: 29 August 2014 at 7:06pm
Used to be cheap at teamaudio and som italian shop, but the price appears to have exploded since then because of neo metal price i guess. It's almost two years ago I was playing around with it
I did do my own design, and I would start it again if I get the time, lost my old laptop with it.
I was playing around to see what I could gain from an expanding mouth.
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AndyWave View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AndyWave Quote  Post ReplyReply Direct Link To This Post Posted: 30 August 2014 at 1:42pm
I'd say you'll got more even frequency response and bit higher sensitivity with expanding mouth area, but only with drivers with low Fs (when the driver fs and horn tuning are near each other), high BL and low Qts. So no easy rule of thump here.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Strawberry Jam Sound Quote  Post ReplyReply Direct Link To This Post Posted: 06 March 2017 at 1:12pm
Hey Tuenos, I love the look of the miss piggy design but it's just a little too massive for me, whats the sketch with your smaller version? seen them in another thread and thought they looked ace

Edited by Strawberry Jam Sound - 06 March 2017 at 1:15pm
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AndyWave View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AndyWave Quote  Post ReplyReply Direct Link To This Post Posted: 14 July 2017 at 6:15am
Small update.

18sound 18LW2500 seems to fit this design by AkAbak model. Compared to Void 18V1000, 0,4dB more sensitivity, bit smoother response and 2,4dB more maximum SPL because of 1000W vs 1600W.

This is purely theoretical and does not take account bigger air compression in horn throat with larger excursions.LOL Not that I'm going to buy these right now.

uploads/3564/Miss_Piggy_18V1000_vs_18LW2500.pdf

edit, Why on earth my pdf is now opening sidewaysAngry




Edited by AndyWave - 14 July 2017 at 6:27am
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