RCF L12-31k seems to be quite old speakers...
It's probably not too bad my friend hehe!
Couldn't find anything about them.
You want to do a single cab with 4 speakers?
You know, it might weight about 100 lbs (45 kg) if you want to brace it correctly.
If you're still interested, please let me know hehe!
You could put two Sony subwoofers in a vertical array, then on top of them you put two RCF woofers in a horizontal array.
It's probably not too bad my friend hehe!
Couldn't find anything about them.
You want to do a single cab with 4 speakers?
You know, it might weight about 100 lbs (45 kg) if you want to brace it correctly.
If you're still interested, please let me know hehe!
You could put two Sony subwoofers in a vertical array, then on top of them you put two RCF woofers in a horizontal array.
hi simon 🙂 how r u ? ...
yup i found two rcf !!! at last !! ...
the seller told me that they r made in china 🙁 ..
but i couldn t find anythin better .. the store has two many speakers ... rcf , jbl , ciare , b&c , dj , and lot more ... they r all fullrange woofers , at first i wanted to buy jbl , but the seller told me that they r not good at all cuz they r all made in china , but the china ciare and rcf are better than china jbl !!! ... lol ...
then i decided to buy ciare cuz it has bigger magnet ! and much more heavier than rcf and at sure more EXPENSIVE ! lol .
but the seller told me the rcf has a better sound for a guitar ! .. lol so i bought two rcf ... now i donno if it s better if i use two sony subs w rcf or its better if i buy another two rcfs & use four rcfs or buy two ciare and use two rcf & two ciare for cab ( as seller said the ciare has more bass sound than rcf !) ??? what do u think ??? ...
i tested the speaker in my small cabinet ( the closed cabinet i built to test my sub ,18"*15"*11", do u remember ? ) and in low freq 20 to 40 it s almost dead , very low sound !!! , and it become higher till bout 170 hz it ll resonance !!! ... so what u think man ???
i just think if it s better if i use two subs horizinal and two rcfs horizinal too ! cuz if i put subs vertical the cab will become tooooooo talll . i donno .. if u think it s better if i put them vertical i ll 🙂 ...
yup i found two rcf !!! at last !! ...
the seller told me that they r made in china 🙁 ..
but i couldn t find anythin better .. the store has two many speakers ... rcf , jbl , ciare , b&c , dj , and lot more ... they r all fullrange woofers , at first i wanted to buy jbl , but the seller told me that they r not good at all cuz they r all made in china , but the china ciare and rcf are better than china jbl !!! ... lol ...
then i decided to buy ciare cuz it has bigger magnet ! and much more heavier than rcf and at sure more EXPENSIVE ! lol .
but the seller told me the rcf has a better sound for a guitar ! .. lol so i bought two rcf ... now i donno if it s better if i use two sony subs w rcf or its better if i buy another two rcfs & use four rcfs or buy two ciare and use two rcf & two ciare for cab ( as seller said the ciare has more bass sound than rcf !) ??? what do u think ??? ...
i tested the speaker in my small cabinet ( the closed cabinet i built to test my sub ,18"*15"*11", do u remember ? ) and in low freq 20 to 40 it s almost dead , very low sound !!! , and it become higher till bout 170 hz it ll resonance !!! ... so what u think man ???
i just think if it s better if i use two subs horizinal and two rcfs horizinal too ! cuz if i put subs vertical the cab will become tooooooo talll . i donno .. if u think it s better if i put them vertical i ll 🙂 ...
The idea of two vertical with two horizontal was to get a nice look.
I think you could still keep your 42" height.
You can also use two horizontal, no problems with that.
You should use your Sony subwoofers for the low bass. I think they are better for a 5-string bass guitar. As you said, you heard nothing between 20-40 Hz versus the Sony subwoofers.
If you go horizontal, it's a good idea too, because you could put your cabinet of the side for stage use, and on the bottom when you're playing for yourself.
Here's a picture I did for you.
I think you could still keep your 42" height.
You can also use two horizontal, no problems with that.
You should use your Sony subwoofers for the low bass. I think they are better for a 5-string bass guitar. As you said, you heard nothing between 20-40 Hz versus the Sony subwoofers.
If you go horizontal, it's a good idea too, because you could put your cabinet of the side for stage use, and on the bottom when you're playing for yourself.
Here's a picture I did for you.
Attachments
hi simon 🙂
thank u so much for designs 🙂 ur design gimme some ideas ! lol ... lemme try wat can i do w it !!! .. lol 🙂 ... thank u so much man 😉 ...
here is one of my old design i redraw it .. i gave it a 15 angel as one of ur designs ...
how is it ???
the port is 4"x12" ...
thank u so much for designs 🙂 ur design gimme some ideas ! lol ... lemme try wat can i do w it !!! .. lol 🙂 ... thank u so much man 😉 ...
here is one of my old design i redraw it .. i gave it a 15 angel as one of ur designs ...
how is it ???
the port is 4"x12" ...
Attachments
It's quite nice, but you said you don't want an angle hehe!
I think it's a bit too small for your Sony subwoofers. That's why I was leaving that much space only for the subwoofers. Like 2/3 for subwoofers and 1/3 for RCF speakers.
I would add some bracing in the lower part, to hold the front and the back with the middle brace, like this:
I think it's a bit too small for your Sony subwoofers. That's why I was leaving that much space only for the subwoofers. Like 2/3 for subwoofers and 1/3 for RCF speakers.
I would add some bracing in the lower part, to hold the front and the back with the middle brace, like this:
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hi simon 😀 ...
no i didn t say i don want an angel
hehe ..
that cabinet was too tall and that s why i said i don want an angel 😛 lol ... and if this one become too taller i ll remove its angel 😉
lol .. so i ll make it bigger .. just one thing else .. i should seprate the woofer and subs section or i can put them together ???
no i didn t say i don want an angel
hehe .. that cabinet was too tall and that s why i said i don want an angel 😛 lol ... and if this one become too taller i ll remove its angel 😉
lol .. so i ll make it bigger .. just one thing else .. i should seprate the woofer and subs section or i can put them together ???
hi simon again 😉 ...
in my previous cab design ( two subs & one full range ) the sub section volume was bout 12000 ( 27"*24"*18") ... in your last design if i built the cab w 18" length the whole cab volume will be 22680 ( 42"*30"*18" ) and if we divide it 1/3 for two woofers and 2/3 for subs , sub section volume will be bout 15120 and in my design the sub section volume is bout 14400 so its not too smaller than ur design ... lol . is n t it ??? and if i still should make it bigger what if i add 2 inches to height of subs section ? , it will be alright , is nt it ?? .. cuz the volume will be 15840 (36"*22"*20")
so what do u think ??? 🙂
in my previous cab design ( two subs & one full range ) the sub section volume was bout 12000 ( 27"*24"*18") ... in your last design if i built the cab w 18" length the whole cab volume will be 22680 ( 42"*30"*18" ) and if we divide it 1/3 for two woofers and 2/3 for subs , sub section volume will be bout 15120 and in my design the sub section volume is bout 14400 so its not too smaller than ur design ... lol . is n t it ??? and if i still should make it bigger what if i add 2 inches to height of subs section ? , it will be alright , is nt it ?? .. cuz the volume will be 15840 (36"*22"*20")
so what do u think ??? 🙂
You should separate the woofer section and the subwoofer section, because the woofer section will be stuffed and the subwoofer section will not be stuffed.
I'll recalculate the volume to see, maybe I made a mistake yes!
EDIT : Just rechecked the volume and you are right, your last design is perfect. Just add a bit of bracing like I showed you hehe! Sorry for the mistake.
I'll recalculate the volume to see, maybe I made a mistake yes!
EDIT : Just rechecked the volume and you are right, your last design is perfect. Just add a bit of bracing like I showed you hehe! Sorry for the mistake.
Yes you will definitely need a crossover. At least a 2nd order crossover at maybe 250 Hz or so.
This webpage allow you to calculate crossover component values.
http://ccs.exl.info/calc_cr.html
If you want to know the theory behind it, tell me.
It's not that hard, you purchase some inductors and capacitors and solder them on a board.
You didn't say if you plan more on playing inside or outside hehe.
But now, the box is a bit bigger, 6 inches long would be ok for outside play and 12 inches long would be ok for inside play.
Since your box is a bit deeper, you could use a bigger port to get less vent noise. One 16 inches long 6 inches diameter port for example would be perfect for outside play.
http://ccs.exl.info/calc_cr.html
If you want to know the theory behind it, tell me.
It's not that hard, you purchase some inductors and capacitors and solder them on a board.
You didn't say if you plan more on playing inside or outside hehe.
But now, the box is a bit bigger, 6 inches long would be ok for outside play and 12 inches long would be ok for inside play.
Since your box is a bit deeper, you could use a bigger port to get less vent noise. One 16 inches long 6 inches diameter port for example would be perfect for outside play.
hi
i more play inside ...
i tried the second order crossover ...what r Linkwitz-Riley Butterworth Bessel mean ???
i more play inside ...
i tried the second order crossover ...what r Linkwitz-Riley Butterworth Bessel mean ???
hi again ,,
which cross over is better for me ? second order , third or forth order ???
and what type of cap they use ???
and what bout the impedance , i wanted to make the whole cab impedance at 4 ohm , ... two rcfs r 16 ohm ,, and wanna put the in parallel to have a 8 ohm from them , and the subs are 4 ohm , and i wanted to put them in series to have 8 ohm , and then put the rcfs and subs in parralel to gain a 4 ohm at last , but now w cross overs what should i do ... ?
which cross over is better for me ? second order , third or forth order ???
and what type of cap they use ???
and what bout the impedance , i wanted to make the whole cab impedance at 4 ohm , ... two rcfs r 16 ohm ,, and wanna put the in parallel to have a 8 ohm from them , and the subs are 4 ohm , and i wanted to put them in series to have 8 ohm , and then put the rcfs and subs in parralel to gain a 4 ohm at last , but now w cross overs what should i do ... ?
Linkwitz-Riley is a crossover with constant voltage.
Butterworth is a crossover with constant power.
Bessel is in between.
An amplifier is delivering constant voltage, so the Linkwitz Riley is better.
You should use 2nd order Linkwitz Riley at least, if you have more money, use a 4th order Linkwitz Riley.
Best components are air-core inductors and polypropylene capacitors. They are more expensive than standard components. You'll get better sound quality with these.
Your wiring is correct, you wire the lower and the higher part so the impedance is 8 ohms, then you wire them in parallel. The impedance will stay at 8 ohms for the amplifier, so you will need to design a 8 ohms amplifier.
Butterworth is a crossover with constant power.
Bessel is in between.
An amplifier is delivering constant voltage, so the Linkwitz Riley is better.
You should use 2nd order Linkwitz Riley at least, if you have more money, use a 4th order Linkwitz Riley.
Best components are air-core inductors and polypropylene capacitors. They are more expensive than standard components. You'll get better sound quality with these.
Your wiring is correct, you wire the lower and the higher part so the impedance is 8 ohms, then you wire them in parallel. The impedance will stay at 8 ohms for the amplifier, so you will need to design a 8 ohms amplifier.
You might want to reverse the phase on the subwoofers because the phase shift is 180 degrees with a second order crossover. You don't need to reverse the phase with a fourth order crossover.
The caps need to be bipolar.
The caps need to be bipolar.
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