this is true. and understood.
when i play with them on the weekend i will assess their ability to play low vs cutoff and decide which way i prefer. coz when its playing, i like to listen to it as well as play.
Often people 'forget' to use a make-up EQ when filters are in use. For instance the average 12dB/Oct filter starts to influence the signal about 3 times (roughly) above its frequency. So a 30Hz filter is starting to influence the signal from 90Hz down low.
Also, never trust the filter figures given by the manual of an amplifier. Often these figures are not accurate.
Also, never trust the filter figures given by the manual of an amplifier. Often these figures are not accurate.
since i have three SS15s now, two with 15s one with a 12 inch driver, i just tried them with the 15/12 standing up normally, and the 15s on their sides on an angle with a lid to form a big one mouth horn. can someone possibly model on hornresp the resulting spl response?
the mouth ends up being 22inch x 46inch, and 24inches from the center of the existing mouth to the new mouth.
if someone can model that, it would be interesting to see how it affects the response.
keeping in mind, it actually has 3 SShorns feeding it.
aurally, it seemed to drastically lower the response to the point of just rumbling the floor and not be able to hear it as such. current XO point is ~80hz.
the mouth ends up being 22inch x 46inch, and 24inches from the center of the existing mouth to the new mouth.
if someone can model that, it would be interesting to see how it affects the response.
keeping in mind, it actually has 3 SShorns feeding it.
aurally, it seemed to drastically lower the response to the point of just rumbling the floor and not be able to hear it as such. current XO point is ~80hz.
There are things that happen in respect to the directivity to a tapped horn that I don't know how to model. The classic example is where I measured different directivity standing up vs on side. Compound that with 2 on side and one upright... and you have a 'how many teeth does a horse have' kind of situation.
aka, 2 farmers can argue all day on how many teeth a horse has, or someone can go over to the horse, open his mouth and look.
You have the boxes, buy you a cheap spl meter (if you don't have one) download some test tones and 'go look' and report back what you find.
Glad you like your boxes. I know they are loaded up with drivers you had available to you. All audio is compromise, and it sounds like you have a compromise that makes you happier than you were before -- congrats.
so last night was the first outing for my 2x SS15 and single ss15/12. and i must say, wow! i thought they sounded good in my house! after hearing them "proper" loud they sound so much better loud than they do soft.
my favourite moment (as i was dj i tended to stay behind them alot) was when i ventured out on the Dfloor to Michael Jacksons BillyJean. had about 30 peeps on the floor and i stood behind them about 8m back from the subs, and i was still getting kicked in the chest!
I am so very impressed Jbell. you have done a brilliant job in designing these horns.
I could only imagine how they would sound with the KappaPro in them with some real power behind them.
edit: and i decided just to group them in a straight line with the two outers slightly angled in. didnt bother with the coupling idea this time.
edit2:
this is at low volume at home, recorded off my nokia. opening track PinkFloyd Darkside of the moon. http://s930.photobucket.com/albums/ad150/klampykixx/?action=view¤t=21102011104.mp4
and my stack.
my favourite moment (as i was dj i tended to stay behind them alot) was when i ventured out on the Dfloor to Michael Jacksons BillyJean. had about 30 peeps on the floor and i stood behind them about 8m back from the subs, and i was still getting kicked in the chest!
I am so very impressed Jbell. you have done a brilliant job in designing these horns.
I could only imagine how they would sound with the KappaPro in them with some real power behind them.
edit: and i decided just to group them in a straight line with the two outers slightly angled in. didnt bother with the coupling idea this time.
edit2:
this is at low volume at home, recorded off my nokia. opening track PinkFloyd Darkside of the moon. http://s930.photobucket.com/albums/ad150/klampykixx/?action=view¤t=21102011104.mp4
and my stack.
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Having worked with berthas and similar cabs, and knowing the old NY club sound, the bigger tapped subs work very very well. I can only speak for the furysubs from experience (Jbells mini is similar as well as others) they go lower and hit harder than berthas. Richard Long is one of my heroes so for me to say the tappeds are better is no small thing. 6 decent sized 15" tappeds are way easier to carry around and set up. The sound pressure level will make people sick if u want.
Yep.. 3 speakers off a HIGH QUALIY AMP... The impedence changes as the speaker moves.
A high quality two ohm amp (Crest,QSC,Crown etc) designed to run all day and night at two ohms, is very happy at 2.6-3.2, I especially recommend this as your minimum with older used amps (and I will enforce it with a baseball bat).
I NEVER bridge my amps unless they are driving ONE speaker. The slight differences between channels when pushed by idiots always results in a fried channel and many times a dc burnt speaker coil.
If the amp is not designed for 2 ohms, only use 2 speakers or 4 ohms. Read the fine print carefully and the back of the amp. There are some amps with a two ohm rating...... that rating is for 1/10th of a second before the amp fries or basically a LIE. Dj amps are notorious for this. Read carefully before going to a 3 cab per amp channel setup. Amp manual may say 2 ohm but back of amp says 4 ohm minimum, that's a clue.
Example rig: Crest Ca12, 3 kappa lite 15 per side. Running almost 3 years now, hardly ever clipped. No problems as yet. Avg sound pressure level in club 110db constant on the dance floor, 108 at console 40 feet away.
Found an interesting 'cheap' NEO replacement for the Eminence 3015LF that sims very similar but has on paper slighly better specs, the Monacor SP-15/500FH. In Europe you can find it for less than 200 Euro's and has an Xmax of 9,25mm, power rating of 500Watt rms - 1000Watt max and weights 4,4Kg.
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After looking at this thread and the TH-18 thread, I have to ask if one of you could sim the following specs for me? They are for a sub I have in storage right now. I have 2 of these and do not do car audio anymore. They are Powerbass 2XL 15D4 subs...I have $700 in the pair and well, you know how it is. lol
any info as to them being useful in a TH horn would be very appreciated. Thanks
-Jeff
VC Impedance (ohms) 4Ω + 4Ω
Test Impedance (ohms) 1.6
Fs (Hz) 27
SD (sqCM) 824.5
Vas (Ltr) 115.1
Cms (μM/N) 116.8
Mms (g) 298.7
BL™ 11.54
Qms 2.53
Qes 0.55
Qts 0.45
No (%) 0.39
Spl (dB)93
Xmax (mm) 14
Voice Coil Size (inches) 2.5
Frequency Response (Hz) 23-400
Motor Structure (ounces) 312 oz.
Mounting Depth (inches) 8.26”
Power (RMS/Peak) 600/1,200 watts
any info as to them being useful in a TH horn would be very appreciated. Thanks
-Jeff
VC Impedance (ohms) 4Ω + 4Ω
Test Impedance (ohms) 1.6
Fs (Hz) 27
SD (sqCM) 824.5
Vas (Ltr) 115.1
Cms (μM/N) 116.8
Mms (g) 298.7
BL™ 11.54
Qms 2.53
Qes 0.55
Qts 0.45
No (%) 0.39
Spl (dB)93
Xmax (mm) 14
Voice Coil Size (inches) 2.5
Frequency Response (Hz) 23-400
Motor Structure (ounces) 312 oz.
Mounting Depth (inches) 8.26”
Power (RMS/Peak) 600/1,200 watts
What's with the harassment? Do we need to get a mod to change your screen name to Big D?
?
What possible harassment is there in asking what i did ? If anyone had asked me the same question i wouldn't have thought for 1 pico second it was Anything even remotely like harassment ! Plus i would have been more than happy to answer. I'm sure AndrewT can speak for himself, & won't have taken it the wrong way either.
Whatever that's supposed to mean ?
What possible harassment is there in asking what i did ? If anyone had asked me the same question i wouldn't have thought for 1 pico second it was Anything even remotely like harassment ! Plus i would have been more than happy to answer. I'm sure AndrewT can speak for himself, & won't have taken it the wrong way either.
Whatever that's supposed to mean ?
"Hi, just curious as to why you bought a speaker without knowing the TSP's first ?"
It looks like a well built piece, albeit a mystery. I'd take a flyer on one for that price.
Google:
heb jij de T/S parameters van de DAP ab-15?
dan zou ik die graag gepresenteerd zien
... ^
dj-dStandaard Lid
Uit: Nederland
Sinds: 26-6-2005
Laatste: 2-11-2011
Posts: 458 11-7-2007 / 19:18
Citaat van: Rademakers
Qms: 4,03
Qes: 0,631
Qts: 0,546
Vas: 122,28 l
Fs: 46,7 Hz
Re: 7,2 Ohm
Le: 2,63 mH
Xmax: 5,5 mm
Pe: 400 W
SPL: 95 dB/W/m
BL: 18,17
Sd: 855 cm²
It looks like a well built piece, albeit a mystery. I'd take a flyer on one for that price.
Google:
heb jij de T/S parameters van de DAP ab-15?
dan zou ik die graag gepresenteerd zien
... ^
dj-dStandaard Lid
Uit: Nederland
Sinds: 26-6-2005
Laatste: 2-11-2011
Posts: 458 11-7-2007 / 19:18
Citaat van: Rademakers
Qms: 4,03
Qes: 0,631
Qts: 0,546
Vas: 122,28 l
Fs: 46,7 Hz
Re: 7,2 Ohm
Le: 2,63 mH
Xmax: 5,5 mm
Pe: 400 W
SPL: 95 dB/W/m
BL: 18,17
Sd: 855 cm²
Nothing mysterious about it. DAP is a Dutch brand name that is part of Highlite. It's a 'cheap' brand but for the money it's okay.. The AB-15 works just fine in the SS15, but don't overpower it...
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The most efficient bass cabinet I have ever built!
I have now also built an SS15. It is awesome.
In initial testing it makes a very good impression.
The SS15 is very efficient - more so than my stadium horns, which in turn are considerably more efficient than my (now dumped) 36"x 36"x 31" folded horns...
I think a single SS15 and a pair of nice little mid tops will do for small to medium weddings.
And Now I'm going to build a second one!
Thanks for the great design and all the collaboration that made it this good!
Regards, ben
P.S. However...
Whilst a single or pair of SS15 seems to be ideal for most of my gigs,
a few times a year I have dubstep, drum and bass, jungle, and very heavy synth bass for electronic acts.
The Stadium horns don't go quite low enough for such events. The SS 15 also won't go low enough.
So I'm thinking...
I have spare 4 Kappa 15 - I could put them in SS 15s - I could use them as subs for smaller gigs.
I have 5 spare 3015lf - I could put 4 of them in a dubhorn (designed for Wisounds), or something similar... ( or make two half dubhorns, with two drivers each)
I have now also built an SS15. It is awesome.
In initial testing it makes a very good impression.
The SS15 is very efficient - more so than my stadium horns, which in turn are considerably more efficient than my (now dumped) 36"x 36"x 31" folded horns...
I think a single SS15 and a pair of nice little mid tops will do for small to medium weddings.
And Now I'm going to build a second one!
Thanks for the great design and all the collaboration that made it this good!
Regards, ben
P.S. However...
Whilst a single or pair of SS15 seems to be ideal for most of my gigs,
a few times a year I have dubstep, drum and bass, jungle, and very heavy synth bass for electronic acts.
The Stadium horns don't go quite low enough for such events. The SS 15 also won't go low enough.
So I'm thinking...
I have spare 4 Kappa 15 - I could put them in SS 15s - I could use them as subs for smaller gigs.
I have 5 spare 3015lf - I could put 4 of them in a dubhorn (designed for Wisounds), or something similar... ( or make two half dubhorns, with two drivers each)
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