#1
So i'm starting to build a 4x12 cab and i need some advices.
I was thinking to fill it with 2xCelestion Vintage 30 and 2x Celestion G12T-75 or G12H or Classic Lead.

1- Which ones should i pick to place with the V30??The G12T75 or G12H or Classic Lead??? (i play mostly metal but i need good sounding cleans too)
2- Say if i couldn't afford the 4 speakers at the same time, only 2, is there any problem in leaving the empty space of the remaining speakers, i mean, would the cab sound like s***???
3- If it's possible the 2, can I wire the 2 speakers 'till i get the other two and then re-wire all the stuff???(noob question but can you help?

Cheers and thx a lot to any answer to this
"For the moon never beams without bringing me dreams"
#3
1. Sorry, I haven't had the pleasure of auditioning any of these speakers, so I have no answer for you.

2. The cab will sound different than if filled with 4 speakers, but I don't think it would sound like sh!t. It wouldn't be up to snuff, though.

3. That depends on the speaker impedance and your amp's output impedance capability. If you get speakers that have the same impedance, if you connect them in series, it doubles the impedance the amp sees. If you connect them in parallel, it cuts the impedance in half. Be sure to connect the correct impedance to the output of your amp.
#4
Quote by Losenger

3. That depends on the speaker impedance and your amp's output impedance capability. If you get speakers that have the same impedance, if you connect them in series, it doubles the impedance the amp sees. If you connect them in parallel, it cuts the impedance in half. Be sure to connect the correct impedance to the output of your amp.

Or if you due a half series, half parallel it will total out to the normal impedance of the single speaker.

thus is why I love 4speaker cabs... so modifiable just by the wiring.

with 4 8 ohm speakers you can get , 4 ohms, 8 ohms, or 16 ohms lol.
#5
Quote by WickedBeast666


with 4 8 ohm speakers you can get , 4 ohms...


math plz
#6
Thx guys.
With the four speakers i'm going to wire them with parallel/series to get more versatily.
But no one knows anything about any of the speakers??
Maybe some reviews or anything...
Cheers
"For the moon never beams without bringing me dreams"
#7
You can not get 4 ohms, I was thinking of a 2x cab, but here's all the math for all the outcomes


8 Ohm speakers
8^-1+8^-1+8^-1+8^-1= .5^-1 all parallel = 2 Ohms
8+8+8+8 = 32 all series = 32 Ohms
8^-1+8^-1 = .25^-1
8^-1+8^-1 = .25^-1
.25^-1+.25^-1 = 8 Half parallel half series = 8 Ohms
8^-1+8^-1+8^-1 =.375^-1
.375^-1+8 = 10.6666 3 parallel 1 series = alil over 10 Ohms
8^-1+8^-1= .25^-1
.25^-1+8+8=20 2 parallel 2 series gets you 20 Ohms

Hope that helps... and
#8
Quote by WickedBeast666
You can not get 4 ohms, I was thinking of a 2x cab, but here's all the math for all the outcomes


8 Ohm speakers
8^-1+8^-1+8^-1+8^-1= .5^-1 all parallel = 2 Ohms
8+8+8+8 = 32 all series = 32 Ohms
8^-1+8^-1 = .25^-1
8^-1+8^-1 = .25^-1
.25^-1+.25^-1 = 8 Half parallel half series = 8 Ohms
8^-1+8^-1+8^-1 =.375^-1
.375^-1+8 = 10.6666 3 parallel 1 series = alil over 10 Ohms
8^-1+8^-1= .25^-1
.25^-1+8+8=20 2 parallel 2 series gets you 20 Ohms

Hope that helps... and


Sweet math..lool
"For the moon never beams without bringing me dreams"
#9
Quote by WickedBeast666
You can not get 4 ohms, I was thinking of a 2x cab, but here's all the math for all the outcomes


8 Ohm speakers
8^-1+8^-1+8^-1+8^-1= .5^-1 all parallel = 2 Ohms
8+8+8+8 = 32 all series = 32 Ohms
8^-1+8^-1 = .25^-1
8^-1+8^-1 = .25^-1
.25^-1+.25^-1 = 8 Half parallel half series = 8 Ohms
8^-1+8^-1+8^-1 =.375^-1
.375^-1+8 = 10.6666 [color="Red"]3 parallel 1 series = alil over 10 Ohms[/COLOR]
8^-1+8^-1= .25^-1
.25^-1+8+8=20 [color="Red"] 2 parallel 2 series gets you 20 Ohms[/COLOR]


Hope that helps... and
The two in red are not very good choices, in most cases.
In the 3 // with 1 series, most of the power will be on the one speaker in series.
The other 3 are just along for the ride.

The last one isn't quite as bad, but it's still bad.
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Last edited by SomeoneYouKnew at Feb 6, 2008,
#10
I'm decided to buy all the four, it's better and it will save a lot of time...
I think the best is Series/Parallel, like in the ultimate tutorial thread, i'll wire each pair of speakers in parallel and then the 2 pairs connected in parallel.I think is that, isn't much clear to understand writing this down...

Edited: G12 Century or G12 Century Vintage for dropped tunes,metal sound??

"For the moon never beams without bringing me dreams"
Last edited by kaos_slayer at Feb 6, 2008,
#11
Quote by SomeoneYouKnew
The two in red are not very good choices, in most cases.
In the 3 // with 1 series, most of the power will be on the one speaker in series.
The other 3 are just along for the ride.

The last one isn't quite as bad, but it's still bad.

Agreed man, I would never recommend them, but i threw it in there as a way to show the rest of the works.

Because most people on here believe that you half in a parallel which is false, and would really really mess you up if your mixing different Ohm speakers.
#12
Any thoughts about the Celestion G12K-100????

"For the moon never beams without bringing me dreams"
#13
Forget the G12K-100 since no one knows...
So I have a few doubts about speakers wattage:
Is there any problem in mixing 2x30W Speaker (like a G12H or something) with 2x80W Speaker (4x12 Cab)??They have same ohms put different wattage, wouldn't the 30Ws speakers get overpowered and die??
"For the moon never beams without bringing me dreams"
#14
Quote by kaos_slayer
Forget the G12K-100 since no one knows...
So I have a few doubts about speakers wattage:
Is there any problem in mixing 2x30W Speaker (like a G12H or something) with 2x80W Speaker (4x12 Cab)??They have same ohms put different wattage, wouldn't the 30Ws speakers get overpowered and die??


As long as you don't mismatch impedances, you'll be golden.

I've mismatched wattages (speaker wise) for years. In fact, one of my cabs is loaded with 2 JBL's, and 2 Greenbacks, and it's my best cab.

They all work in conjuction.

So, if you were to have to 80w speakers, and two 30w speakers, you'd have a total of 220w of handling power.
#15
Quote by diditfortehlulz
As long as you don't mismatch impedances, you'll be golden.

I've mismatched wattages (speaker wise) for years. In fact, one of my cabs is loaded with 2 JBL's, and 2 Greenbacks, and it's my best cab.

They all work in conjuction.

So, if you were to have to 80w speakers, and two 30w speakers, you'd have a total of 220w of handling power.


But the 80Ws speakers wouldn't run at lower wattage because of the 30 ones??
"For the moon never beams without bringing me dreams"