#1
Hello
I have a Mesa TA 15 with two speaker out put jacks. One is 4 ohms and the other is 8 ohms.
I have two Mesa Rectocabs 1x12, 8 ohms each with a parallel out.
What is the proper setup:
-amplifierr 4 ohm out to 1x12 cab and parallel or to other 1x12 cab?
-Or amplifier 8 ohm out to the 1x12 cab and parallel out to other cab?
#2
Quote by aesop00019
Hello
I have a Mesa TA 15 with two speaker out put jacks. One is 4 ohms and the other is 8 ohms.
I have two Mesa Rectocabs 1x12, 8 ohms each with a parallel out.
What is the proper setup:
-amplifierr 4 ohm out to 1x12 cab and parallel out to other 1x12 cab?
-Or amplifier 8 ohm out to the 1x12 cab and parallel out to other cab?
That one.
Gilchrist custom
Yamaha SBG500
Telecasters
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100


Cathbard Amplification
My band
#3
Remember when plugging in parallel, if u got 2 cabs, the ohms double in parallel. They half in series. So 8 parallel sounds right.... Still the best idea is to read the manual... Sometimes the amp jacks are misleading.
#4
Quote by coldandhomeless
Remember when plugging in parallel, if u got 2 cabs, the ohms double in parallel. They half in series. So 8 parallel sounds right.... Still the best idea is to read the manual... Sometimes the amp jacks are misleading.
You got that back to front and it's only true if both cabs are the same impedance.
Gilchrist custom
Yamaha SBG500
Telecasters
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100


Cathbard Amplification
My band
#5
Hmm confused now. The Cab has a "Parallel Out" jack. Both Cabs are 8 ohm.
So saying it doubles, using 8hm out on the amp is best??
#6
Quote by aesop00019
Hmm confused now. The Cab has a "Parallel Out" jack. Both Cabs are 8 ohm.
So saying it doubles, using 8hm out on the amp is best??

Cathbard is right, do what he said.

whatever coolandhomeless posted is not right.

if you hook two impedances up in parallel it is:

1/Rtot = 1/R1 + 1/R2

so if you have two 8 ohm cabs it'd be

1/Rtot = 1/8 + 1/8 = 2/8 = 1/4

take the reciprocal and

Rtot = 4 ohms

so if you hook up two 8 ohm cabs in parallel it is 4 ohms. using the 4 ohm tap is right.
punk isn't dead, it's always smelled that way.

"A perfection of means, and confusion of aims, seems to be our main problem."
-ae