Speaker ohmage question.. i know im retarded...

[Rob Tahan]

So i want to start using my bogner 1x12 (with cl-80's) with my Herbert live along with my Diezel 4X12. What i need to know is the correct ohmage for using both cabinets.

The Diezel is the old 4X12 Salt and pepper cab with the custom eminence speakers
The other is a bogner 1X12 with celestian cl-80's (16 ohms)

I dont want to blow the 1X12. will it handle it? and how should i plug it in the proper load?

Thanks a million!!

 

[duesentrieb]

Ohms of the 4x12"?
Ohms of the Bogner?

 

[Rob Tahan]

The bogner is DEFINITELY 16 ohms
The diezel is (i believe) 8 ohms.. Its the old cabinet (salt and pepper grill)

 

[SwampDonkey]

Someone feel free to correct me if I am wrong.

If both cabs are 16 ohms, run them on 8 ohms each.

If both are 8 ohms run them on 4 ohms each.

If they are mismatched impedance, it is usually not recommended to run them together.

 

[duesentrieb]

both into the 4 Ohm out - thats the "1x4 or 2x8" Ohm labbeled out.

 

[Rob Tahan]

both into the 4 Ohm out - thats the "1x4 or 2x8" Ohm labbeled out.

Wow! 4 ohm input for my 16ohm cabinet..?

 

[duesentrieb]

1/16 + 1/8 = 1/16 + 2/16 = 3/16
16/3 = 5,3333 Ohm

Thats why you use the 4 Ohm tap (=2x8 Ohm, OT leads are wired in parallel).

 

[SwampDonkey]

I stand corrected. So this is perfectly safe for the head?

 

[duesentrieb]

Sure.

 

[reussen]

1/16 + 1/8 = 1/16 + 2/16 = 3/16
16/3 = 5,3333 Ohm

Thats why you use the 4 Ohm tap (=2x8 Ohm, OT leads are wired in parallel).

This is the first time anyone has been able to make me understand how that Ohm stuff works!

 

[eddiespaghetty]

You know,
he is a Doctor!!!!

 

[Rob Tahan]

Ok.. So last night i plugged both of the speakers into the 4 ohm outputs of the herbert and 2 things happened. 1 good and 1 bad...:

1. The sound out of the 1X12 was so smooth and warm i just could have died and gone to heaven.
2. There seemed to be quite a loss of total VOLUME comming out between the two cabinets. (I feel like when i just have the 2 8ohm outs in my diezel 4X12 alone that i get a louder volume.
Is this because of the mismatched ohmage?
The Diezel Cabinet says 16ohm/8ohm on the left and 16ohms on the right.
THe Bogner is 16 ohms.
Should i have tried going out of both 8ohm outputs in the Herbert?

 

[duesentrieb]

Thats normal. The cab/speaker with the higher impedance produces less volume. Physically "normal". If you want equal volumes you need to use equal impedances.

 

[stefvorcide]

1/16 + 1/8 = 1/16 + 2/16 = 3/16
16/3 = 5,3333 Ohm

Thats why you use the 4 Ohm tap (=2x8 Ohm, OT leads are wired in parallel).

This is the first time anyone has been able to make me understand how that Ohm stuff works!

Same here, before I just "applied" it without thinking about it
Thank you Olaf.
You should teach us mathematics

 

[Rob Tahan]

Thats normal. The cab/speaker with the higher impedance produces less volume. Physically "normal". If you want equal volumes you need to use equal impedances.

Yes, but should i use the two 8 ohm outs? Thats what im confused about . I used the two 4 ohm outs before and i really was struggling for volume.

 

[duesentrieb]

Use the two 4 Ohm outs. You have a total impedance of 5.3 Ohm. With the 4 Ohm outs you have the smallest mismatch. With the two 8 Ohm outs you would have a bigger mismatch - and you would also hear the same volume difference.