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Post subject: Supersonic 22 head through a 412 cab
Posted: Wed Jul 30, 2014 5:53 pm
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Hi all,

I'm looking for a cab to match a Supersonic 22 head. I'm a fan of 4x12s and I'm leaning towards the Supersonic 412. I know that the head is 8 ohms and the 412 is 16 ohms. Also I believe the cab is also 100 watts. Is the wattage/ohm mismatch going to be a problem? Are there other cabs I should look into? Thanks!


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Post subject: Re: Supersonic 22 head through a 412 cab
Posted: Wed Jul 30, 2014 6:23 pm
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If you can locate Fender's DT412 enclosure, that's an 8-ohm cabinet with four Celestion G12T-100 speakers.

Arjay

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Post subject: Re: Supersonic 22 head through a 412 cab
Posted: Wed Jul 30, 2014 7:33 pm
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The supersonic 22 is specified to handle both an 8 or a 4 ohm load. A 'dummy' plug is inserted into the jack labeled 'internal' and then a speaker cable is inserted into the jack labeled 'external', then to a 4 ohm cab. (Your manual should verify this.)

I'm not familiar with the wiring on the 4X12 you are referring, but if it's overall impedance is 16 ohms from 4 individual 16 ohm speakers (a series/parallel circuit), then it can easily be rewired to have all four speakers in parallel yielding 4 ohms. Often cabs of this type are pre-wired both ways and have different jacks labeling the impedance for that circuit.

The fact that the cab is rated to take 100 watts means it will easily take the total output of the SS22 without chance of failure. No problem in this regard.

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Post subject: Re: Supersonic 22 head through a 412 cab
Posted: Thu Jul 31, 2014 6:29 pm
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IM4Tone wrote:
The supersonic 22 is specified to handle both an 8 or a 4 ohm load. A 'dummy' plug is inserted into the jack labeled 'internal' and then a speaker cable is inserted into the jack labeled 'external', then to a 4 ohm cab. (Your manual should verify this.)

I'm not familiar with the wiring on the 4X12 you are referring, but if it's overall impedance is 16 ohms from 4 individual 16 ohm speakers (a series/parallel circuit), then it can easily be rewired to have all four speakers in parallel yielding 4 ohms. Often cabs of this type are pre-wired both ways and have different jacks labeling the impedance for that circuit.

The fact that the cab is rated to take 100 watts means it will easily take the total output of the SS22 without chance of failure. No problem in this regard.

That's very helpful, thank you.

I must admit that I am a bit of rookie to heads & cabs. I also can't find the manual anywhere online, including the Fender website (they ironically have every other SS model's manual there). I also ordered the amp used online so I doubt I'll ever see the real manual.

Does the dummy plug technique usually work? Is a dummy plug just a cable with nothing on the other end, or, for instance, a 1/4 to 1/8 adapted not attached to anything else?

Also, the parallel rewiring seems promising. Judging by the manual (this actually has a real one), I don't think it's pre-wired that way. Is this something that can be done if I bring it in to a shop? Thanks for the help.


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Post subject: Re: Supersonic 22 head through a 412 cab
Posted: Thu Jul 31, 2014 7:00 pm
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yesthisisjoe wrote:
IM4Tone wrote:
The supersonic 22 is specified to handle both an 8 or a 4 ohm load. A 'dummy' plug is inserted into the jack labeled 'internal' and then a speaker cable is inserted into the jack labeled 'external', then to a 4 ohm cab. (Your manual should verify this.)

I'm not familiar with the wiring on the 4X12 you are referring, but if it's overall impedance is 16 ohms from 4 individual 16 ohm speakers (a series/parallel circuit), then it can easily be rewired to have all four speakers in parallel yielding 4 ohms. Often cabs of this type are pre-wired both ways and have different jacks labeling the impedance for that circuit.

The fact that the cab is rated to take 100 watts means it will easily take the total output of the SS22 without chance of failure. No problem in this regard.

That's very helpful, thank you.

I must admit that I am a bit of rookie to heads & cabs. I also can't find the manual anywhere online, including the Fender website (they ironically have every other SS model's manual there). I also ordered the amp used online so I doubt I'll ever see the real manual.

Does the dummy plug technique usually work? Is a dummy plug just a cable with nothing on the other end, or, for instance, a 1/4 to 1/8 adapted not attached to anything else?

Also, the parallel rewiring seems promising. Judging by the manual (this actually has a real one), I don't think it's pre-wired that way. Is this something that can be done if I bring it in to a shop? Thanks for the help.

The 'dummy plug' ===> http://www.parts-express.com/1-4-mono-p ... l--090-302 No cable connected...just insert as received.
With the absolute minimum of knowledge and skill, you can rewire the cab. Run wire to each of the + speaker tabs, connecting them all together. Then do the same for the - tabs. Then run a wire from one of the speaker + tabs and another from that speaker's - tab to the input jack. That's it!

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Post subject: Re: Supersonic 22 head through a 412 cab
Posted: Thu Jul 31, 2014 7:09 pm
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Thanks for the wiring tips. So just to clarify, if i stick the dummy plug into the external jack, then whatever runs out of my amp's internal jack will be 4 ohms instead of 8? Does that work for all heads?


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Post subject: Re: Supersonic 22 head through a 412 cab
Posted: Thu Jul 31, 2014 7:38 pm
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yesthisisjoe wrote:
Thanks for the wiring tips. So just to clarify, if i stick the dummy plug into the external jack, then whatever runs out of my amp's internal jack will be 4 ohms instead of 8? Does that work for all heads?

NO! the dummy goes in the 'internal' jack. Then the speaker cable in the 'external' jack wants to see a 4 ohm load. This is common to a lot of Fender heads (and combos). Most other brands have multiple jacks labeled for the appropriate impedance OR a switch to set the impedance.

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Post subject: Re: Supersonic 22 head through a 412 cab
Posted: Fri Aug 01, 2014 8:53 am
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Right! Dummy goes in internal! Thank you, that is great advice.


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