@apex
Yes your right about that 150hz and it does not go low down the sub domain (40Hz below).
i use to have this subscoop 218 with infrasub 218... ss218 doin the passband 50hz to 120hz and highpass at 50z...this will be couple by a is218 50hz xing at 50hz(Example Drawing below)...this will be a 4 way active system. That was about 10 years ago.
today we only use a WSX clone and a 12"x2 + 8" + 1" for the Horn loaded tops for a simple 3 way setup...it will do Live and Dance.
Have a nice day,
jojo
Yes your right about that 150hz and it does not go low down the sub domain (40Hz below).
i use to have this subscoop 218 with infrasub 218... ss218 doin the passband 50hz to 120hz and highpass at 50z...this will be couple by a is218 50hz xing at 50hz(Example Drawing below)...this will be a 4 way active system. That was about 10 years ago.
today we only use a WSX clone and a 12"x2 + 8" + 1" for the Horn loaded tops for a simple 3 way setup...it will do Live and Dance.
Have a nice day,
jojo
Attachments
@Audiomachine.. thanks for schematics.. can you also send me the output stage schematic? of the k10?
Hi guys, it's been a long time since i got here. I Have a questions to all you masters i'm planning to build a dual 15 midhighs like the SR of JBL and nowadays Kevler. my question are, are those SR's has a crossover inside? if so, what kind of crossover they have? and does it mean that 1 cab is already 4ohms? because it has two 15 inch woofer.
Any answer are appreciated, Thanks in Advance
i'm planning to build a dual 15 midhighs like the SR of JBL and nowadays Kevler. my question are, are those SR's has a crossover inside? if so, what kind of crossover they have? and does it mean that 1 cab is already 4ohms? because it has two 15 inch woofer.Any answer are appreciated, Thanks in Advance
Hi guys, it's been a long time since i got here. I Have a questions to all you masters
Any answer are appreciated, Thanks in Advance
yes they have passive crossover inside, mostly 3rd order on highs and 2nd order on lows, they are complicated, see the attached schematic of sr4733 and the picture of vrx network we dismantled
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Thanks for the response sir C3PO, i agree it is complicated but how am i going to have those crossover? is there any kit that i can buy from some shops? i think i just need the simple one, because i'm going to use those speakers as full range.
How about the issue 4ohms sir? is it correct that 1 cab is already 4ohms?
BTW thanks again sir
but how am i going to have those crossover? is there any kit that i can buy from some shops? i think i just need the simple one, because i'm going to use those speakers as full range. How about the issue 4ohms sir? is it correct that 1 cab is already 4ohms?
BTW thanks again sir
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Thanks for the response sir C3PO, i agree it is complicated
How about the issue 4ohms sir? is it correct that 1 cab is already 4ohms?
BTW thanks again sir
JBL SR4733X
SPECIFICATIONS
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
• Nominal Impedance: 4 ohms
• Power Capacity: 1200W Continuous Pink Noise
• Frequency Range: 35 Hz – 18 kHz (–10dB)
• Sensitivity: 100 dB SPL, 1 Watt @ 1 Meter
• Crossover Frequency: 1.2 kHz
OK lets make it SIMPLE...JBL SR4733X network is a very straight forward design very simple...what's making it complicated is the switching circuit from Bi-amp to Full-range.
First we dissect the passive network itself...then will make the inductor coil below.
Inductance 0.6 mH
DC Resistance 0.18 Ohms
Wire Gauge 16 AWG
Wire Diameter 50.8 mils (1 mil = .001 in)
Coil Length 0.75 in
Coil Inner Diameter 0.5 in
Coil Outer Diameter 1.72 in
Average Turn Diameter 1.02 in
Wire Length 45.07 feet
Copper Weight 0.35 pounds
Turns 168
Levels 11.38
Turns/Level 14.76
Inductance 1.81 mH
DC Resistance 0.33 Ohms
Wire Gauge 16 AWG
Wire Diameter 50.8 mils (1 mil = .001 in)
Coil Length 0.75 in
Coil Inner Diameter 0.5 in
Coil Outer Diameter 2.23 in
Average Turn Diameter 1.28 in
Wire Length 81.6 feet
Copper Weight 0.64 pounds
Turns 243
Levels 16.46
Turns/Level 14.76
Then follow the circuit in the pics...
Enjoy...
jojo
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passive crossover
dj eclair... now dj jojo md has done all the work for you, you can buy those polypropelene caps at rs farnell makati. if you want original jbl passive networks you can visit Music Box in angeles city.. good luck to your project
Thanks for the response sir C3PO, i agree it is complicated
How about the issue 4ohms sir? is it correct that 1 cab is already 4ohms?
BTW thanks again sir
dj eclair... now dj jojo md has done all the work for you
, you can buy those polypropelene caps at rs farnell makati. if you want original jbl passive networks you can visit Music Box in angeles city.. good luck to your projectSPEAKER
what is speaker sensitivity and frequency response
how can i determine the right sensitivity and frequency response of a speaker needed for my system? i've been buying speaker driver but i'm only concern on the size and its wattage. i'm not aware of the sensityvity and its frequency response. pls help
how can i determine the right sensitivity and frequency response of a speaker needed for my system? i've been buying speaker driver but i'm only concern on the size and its wattage. i'm not aware of the sensityvity and its frequency response. pls help
dj eclair... now dj jojo md has done all the work for you
how can i determine the right sensitivity and frequency response of a speaker needed for my system? i've been buying speaker driver but i'm only concern on the size and its wattage. i'm not aware of the sensityvity and its frequency response. pls help
you cannot just scale down any box...it's a mathematical equation to do that.
But i can share you this C horn for 15" driver...
I will post the dimension if want it.
have a nice day,
jojo
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