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PostPosted: Fri Mar 31, 2017 6:25 am 
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Bottle Rocket

Joined: Fri Mar 31, 2017 6:18 am
Posts: 1
Hi everyone.
I have a Rectoverb 25 combo, and I just bought a Theile 1x12 extension cab for it.
Before I go getting all rock star crazy and begin hooking the cab up, I have what I think is an easy to answer question, but Ive not had luck getting a definitive answer so far.
If I want to use the Combos internal speak in conjunction with the 1x12 cab, would I unplug the combos internal speaker from the 8 ohm jack and plug it into one of the 4 ohm jacks, and plug the Theile into the other 4 ohm jack? OR does the combos 8 ohm jack ALWAYS need an 8 ohm load on it, no matter what?
The user manual doesnt answer this question, and I really dont want to blow the RV up!
Thanks for your help!


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PostPosted: Fri Mar 31, 2017 7:00 am 
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Mark II

Joined: Thu Jul 07, 2016 1:18 pm
Posts: 60
Yes you have it right. Internal 8 ohm speaker and external 8 ohm speakers to be plugged into the 4ohm outputs.


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PostPosted: Thu Apr 06, 2017 6:18 am 
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Mark II

Joined: Sun Feb 02, 2014 11:51 am
Posts: 57
Hi,

And just to elaborate a bit... there is nothing special about the 8 ohm jack and there is nothing special about the combo speaker, it is a regular 8 ohm speaker. The amp needs a load equal or greater than the jack label at all times. All the jacks (4 and 8 ohms) are wired back to the same place essentially.

When you hook up 8 ohm speakers to each 4 ohm jack, the actual load to each jack in this case is 4 ohms because the 4 ohm jacks are wired in parallel and are all connected back to the same place. The manual should have some more info on hooking up speakers (extension cabs).

Regards,

Mace


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PostPosted: Thu Apr 06, 2017 9:02 am 
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Donating Member
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Joined: Mon Jan 01, 2007 6:52 am
Posts: 3044
Location: New Haven, CT U.S.A.
ETrask70 wrote:
Hi everyone.
I have a Rectoverb 25 combo, and I just bought a Theile 1x12 extension cab for it.
Before I go getting all rock star crazy and begin hooking the cab up, I have what I think is an easy to answer question, but Ive not had luck getting a definitive answer so far.
If I want to use the Combos internal speak in conjunction with the 1x12 cab, would I unplug the combos internal speaker from the 8 ohm jack and plug it into one of the 4 ohm jacks, and plug the Theile into the other 4 ohm jack? OR does the combos 8 ohm jack ALWAYS need an 8 ohm load on it, no matter what?
The user manual doesnt answer this question, and I really dont want to blow the RV up!
Thanks for your help!

Page 23 of your owners manual clearly explains this.

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