building a 6X12, wiring queries...

[oinkbanana]

i've decided to build myself a 6X12 cab. still not sure how i'm gonna wire it up.
I'm leaning towards a 10.66 ohm cab using six 16ohm speakers (running it on the 8ohm tap on my tube amp)

If I were to find 6ohm or 12ohm speakers, that would be sweet because i could wire it up to be a 4ohm or 8ohm cab
but where do you find such speakers?


I've read about people using mixed speakers, four 16ohm, and two 8ohm, and making a 8ohm cab...
I think this is what Emperor, Electric Amps and Matamp do in their 6X12 cabs
but I hesitate because the power distribution wont be equal for all speakers, and I think this is important since they're all in 1 box (or I might as well build a 4X12 & 2X12)

anyone else want to chime in?
bounce some ideas around.

I'm totally gonna build it up like this guy did http://sampdiy.blogspot.com/2011/02/gui ... art-1.html

[MEC]

Using this:
http://colomar.com/Shavano/impedance_proc.php

I came up with this:
http://colomar.com/cgi-bin/h_impedance_proc?8Z8Z8Z8Z16Z16ZxZxZxZxZxZxZxZxZxZx

I believe the power distribution will be equal but I'm not 100%.

If you have two taps on your amp you could wire two separate jacks on the cab.
This would be like a 2x12 and a 4x12 in one cab.
You could use either section separately or both together.
You could also run two amps to the same cab.
A friend of mine has an Ampeg bass cab wired like this with a 15 on the bottom and 4 10's on top.

You could also get one of these:
http://taweber.powweb.com/store/zmatch.htm

And wire your speakers like this:
http://colomar.com/cgi-bin/h_impedance_proc?8Z8Z8ZxZ8ZxZxZxZ8ZxZxZxZ8ZxZxZx

Hope this helps.

[oinkbanana]

Using this:
http://colomar.com/Shavano/impedance_proc.php

I came up with this:
http://colomar.com/cgi-bin/h_impedance_proc?8Z8Z8Z8Z16Z16ZxZxZxZxZxZxZxZxZxZx

I believe the power distribution will be equal but I'm not 100%.

the power distribution is not equal.
each 32Ohm row would get half the power.
lets say it's a 100watt amp each row gets 50watts, since the amp sees each row as 32Ohms
so the 16ohms would each be getting 25watts, and the 8ohms would be getting 12.5watts (each row divided by their respective amounts of speakers)

this is what i'm worried about. 25watts vs 12.5watts is a big difference when driving a speaker. some will be on edge of breakup, others won't. there'll be different frequencies coming from the different speakers... sounds like an invitation for frequency cancellation



bass cabs typically have baffles that separate difference sections to keep maximum push. the typical 8X10 is built like four 2X10s

[MEC]

Yeah, maybe you could email Emperor and see what they do.
I doubt they wire them up without making sure they are going to sound right and not cancel frequencies.
I'm sure there is a way around this or no one would use 612's.
Good luck, if you figure it out please post and let us know.

[Ancient Astronaught]

i may be completely off by this but i believe you can do it this way.... wire it as 2 groups of 3 parallel speakers and then series the groups so basically from the jack 1 red split to 3 red to the positives of the first group then 3 negatives back into a single wire (thicker gauge) then split it again into 3 wires into the positives of group 2 then sum up the three negatives in the second group back to a single wire to the negative on the input jack.... this is just theoretical from my minimal wiring experience
or just get 8 ohm speakers and wire them all parallel from a distribution block back into another distribution block for the negatives and back out the input jack

[oinkbanana]

i may be completely off by this but i believe you can do it this way.... wire it as 2 groups of 3 parallel speakers and then series the groups so basically from the jack 1 red split to 3 red to the positives of the first group then 3 negatives back into a single wire (thicker gauge) then split it again into 3 wires into the positives of group 2 then sum up the three negatives in the second group back to a single wire to the negative on the input jack.... this is just theoretical from my minimal wiring experience
or just get 8 ohm speakers and wire them all parallel from a distribution block back into another distribution block for the negatives and back out the input jack

what speakers Ohms are you using, and what cab Ohms are you getting from these configurations? i'm having a hard time to follow.




using six 16Ohm speakers gives a cab of 10.66Ohms, Should I run my head at 8Ohms or 16Ohms?
using six 12Ohm speakers gives a cab of 8Ohms (but where do they sell 12Ohm speakers?

OR
I can use four 16Ohm speakers and two 8Ohm speakers to make an 8Ohm cab.

or

but the 8ohm speakers will individually get 2 times the power that the 16ohm speakers get,
am I wrong to assume that's ass-backwards for something all in one enclosure?


how is your 6X12 wired?
or where can I find 12Ohm speakers?