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Svt multi-cabinet impedance advice

N

NoahS

Guest
Apr 15, 2013
46
1
#1
Hey everyone,

I'm trying to wire my SVT properly into 3 seperate cabs. 1 Ampeg 810e and 2 seperate Traynor 15" cabs. 810e is 4ohm and the Traynors are both 8ohm.

The 810e has 3x1/4" jacks and the Traynors have only one input jack per cab. This is where I get confused.

Should I send one line out into the 810e and the other line out into a splitter and split into each 15 creating a 4ohm load? Flip the switch to 2ohm's?

Any thoughts would be very helpful.
 
#6
Make sure you perform the battery test to ensure that all three cabinets are working with the same polarity. All cones should move in the same direction with the positive battery terminal to the tip if the speaker cable.

Make sure that the 15s are stacked so you can hear them. Doing what you want is equivalent to running a pair of 4x10 plus 1x15.
 
#7
RickenBoogie said:
Make sure the 3 jacks on the 810 are all parallel first, but then 810's will be be much louder than 2 15's will. be careful you don't kill the 15's. A 2nd 810 would be a much better match.
Click to expand...

How can I tell if the jacks are parallel? If they are I can connect 1 line out from the head to the 810 and two seperate jacks out of the 810 into the seperate 15's? Will that be a total of 2ohm's?
 
#10
In the case of the 115 Traynor cabs you can add a parallel jack. It would require modifying the cabinet by drilling a hole and simply paralleling the jack connections, tip to tip, sleeve to sleeve. An alternative would be to buy a Y speaker cable that parallels the cabs, or to use a splitter box, one in and two parallel out. With a splitter box you would need three cables. With a mod to the Traynor cab, you would need two cables. In both cases the 8 ohm cabs are paralleled to give you 4 ohms going out to your amp.
 
#13
I have to ask- what do you hope to gain by adding these 2 15's to your 810? More volume? More low end? And, since the jacks on the 810 are NOT parallel, modifying the 2 1x15 cabs is the next best option, short of not using the extra 2 cabs in the first place.
 
#15
I was hoping to get a bit louder and fuller with the additional 15's but it is more of an experiment to see what it would sound like. I'm still searching for more clarity and headroom. Im cranking to 12 o clock just to be heard over my EXTREMELY loud drummer.
 
#16
Here is a splitter box: http://procablesnsound.com/items/speaker-y-cables/PYBOX-detail.htm
Here is another: http://www.loop-master.com/product_info.php?cPath=26&products_id=153

They sell Y speaker cables as well but I'd rather use a box to ensure a better connection. I don't like those female 1/4" connectors when speaker cabs are involved.

If you want to build one, here is a reference: http://www.talkbass.com/forum/f15/ampeg-810-single-1-4-input-question-718901/#post10093881
Note that the three 1/4" jacks are isolated from the metal case with special switchcraft washers for safety reasons, otherwise you can use a plastic box.
 
#17
I think you need to check your 810 to make sure they are all working, then the amp. 300 watts into an 810 is REALLY ear damaging LOUD.
Leave the speaker cable in the cab and disconnect the cable from the amp (amp power off). On the now free 1/4" plug use a 9 volt battery touch the + to the tip and - to the barrel sleeve. All speaker cones should move out equally, if one or more don't they are damaged. If you have a speaker or more than one move in the opposite direction someone mis-wired the cab.
 

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