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uponashelf

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Posts: 5
Reply with quote  #1 
Hello, I'm new to your forum, and I'm in the process of building my son a 410 bass cabinet. My question is this, using 4-10 inch Celestion woofers wired to a 4 ohm load, should I have more than one input jack, and if I do need more than one how do I wire the two input jacks. I've noticed some boxes have just one input and others have 2, I'm guessing the second one is for plugging in another cabinet. Am I right on that or am I way off.
Thanks,
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plexi54

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Posts: 22
Reply with quote  #2 
Hello,
To answer your question,I will assume your sons amp only puts out a four ohm load,if that being the case,then you would only need one input jack on the rear of the cabinet,however amps come in so
many lay outs today,some do  16,8,4, others
can be 8,4 and some even go 4,2 ohms.
It is paramount to match the speaker cab to the
output of the amp,anything less than ideal,will
I repeat will result in amplifier or speaker damage..........Steve
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uponashelf

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Posts: 5
Reply with quote  #3 

I checked his amp and it is a 8 ohm amp, now my question is this, his amp has 2 outputs, is this for a left and right, or for 2 cabinets. The other reason I asked about the number of ouyput jacks is would he need the second input jack for hook up to another box, say daisy chaining 2 cabinets together.

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patrickbrose

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Posts: 3
Reply with quote  #4 
What is the make/model of your sons amp? I can give you a rundown of how the speaker selection/wiring will work, but I have a caveat...
Bass cabs are way more difficult to make than speaker cabs. You can't just stick 4 speakers in a box and wire them up. Bass cabs need to be built to specific dimensions and parameters based on the specifications of the speakers. If you do just place 4 speakers in a box and wire them up, you will most likely get a less-than-good sound. Bass cabs are a strange beast, and most builders go to great lengths to tune their bass cabs so they sound good. Do some research on building bass cabs and you will find all sorts of tools and software that is needed to design a proper bass cab.
I am not trying to be negative, but a 4x10" bass cab is a major undertaking that a new builder may find very frustrating (and costly) to get to sound right.
-P

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plexi54

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Posts: 22
Reply with quote  #5 
Hi again,I'm going to have to get on board with
"patrickbrose" you have choosen a subject with
many pitfalls,there are so many variables,I don't
want to put you off doing your project,but as said
before,bass cabinets are a whole other animal,and
very unforgiving,if not properly designed.Now,
that being said,you can do it,with some online
information,preparation,and attention to details
you can design and build a very fuctional and
proper 4x10 bass cabinet,after all,the Wright Bros. flew and that was a subject with many
pitfalls and variables too !   Good luck on your
project.               plexi54
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bassfilthy

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Posts: 2
Reply with quote  #6 
Quote:
Originally Posted by plexi54
Hi again,I'm going to have to get on board with
"patrickbrose" you have choosen a subject with
many pitfalls,there are so many variables,I don't
want to put you off doing your project,but as said
before,bass cabinets are a whole other animal,and
very unforgiving,if not properly designed.Now,
that being said,you can do it,with some online
information,preparation,and attention to details
you can design and build a very fuctional and
proper 4x10 bass cabinet,after all,the Wright Bros. flew and that was a subject with many
pitfalls and variables too !   Good luck on your
project.               plexi54
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bassfilthy

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Posts: 2
Reply with quote  #7 
Hello..i also need help re wiring my ampeg bass cab..its a ampeg 1540e cab but the 15 was replaced with a 18..i use a ampeg svt 4 pro in bridged mono mode..just picked up the cab..its 8ohms,ampeg reccomends 4ohms..not sure of the watts..only has one input jack..should i wire it so the 4x10"s have there own input and the 18 its own and run the head in stereo..but i like the bridged mono power..any way to wire to 4 ohms?..if not..how to wire with the speaker sizes having there own jack..thank you
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