My new 3x12 cab

  • Thread starter Thread starter errrrrl
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errrrrl

errrrrl

Well-known member
You guys ever seen or heard these 3x12 cab's before from 3rd Power Amplification? I just picked one up and thought i'd share. Really liking it so far. The removable triangle port on the back is actually kind of cool. I was looking for a smaller cab with a lot of tight bottom end and this beat out the 2x12 cabs I was originally gassing for. This things rocks :rock:

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How do you work out the impedence deal on that thing brah?
 
My guess is that not all the speakers have the same impedance. It looks like the cab is 8 ohms (hard to read it clearly on the input jack). So, maybe two 8 ohm speakers in series and a third 16 ohm speaker in parallel to those? Of course, a 16 ohm cab could be had using two 16 ohm speakers in parallel and then running that into an 8 ohm speaker in series. Rather curious to say the least.
 
Ok, have to say this seriously looks cool as fuk lol! How much and where to get?!;)
 
That looks really great, and I'm sure it sounds awesome, glad to see they changed to a traditional square cab. I don't think the original triangle 3x12's ever really caught on. I think the inside of yours is still a triangle to cut down on standing waves and reflections..
 
must be 2 8ohm speakers in series with eachother = 16ohms

then take that circuit and put it in parallel with a 16 ohm speaker = 8 ohms total
 
Is that actually any smaller than a 4x12? Certainly has extra screws, how much weight and space are you actually saving here?
 
Thanks guys... I did some Googling and the speakers are wired in parallel with 16 ohm speakers so the cab is 8ohms. I don't think this style cab is still being made. I bought it brand new but its old. The shop owner bought the actual cab + matching head from a NAMM show. Did some youtube searching and my guess is from a 2011 NAMM.

As for size and weight, yeah it is a little smaller than a 4x12. It was almost the same size as a Bogner 2x12 I almost bought. Here is a pic from the day I was testing cabs, you can see it's size vs other various cabs for comparison.

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Also found this pic from some old review for the cab http://musicplayers.com/reviews/guitars/2011/0711_3rdPower_SB312.php

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Mismatching impedance within the cab means mismatching how much power goes to each speaker. Doesn't seem like a good idea to me. Couldn't find anything on their web site.
 
mixn4him":nbzn34w9 said:
That looks really great, and I'm sure it sounds awesome, glad to see they changed to a traditional square cab. I don't think the original triangle 3x12's ever really caught on. I think the inside of yours is still a triangle to cut down on standing waves and reflections..
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Yup, exactly. Inside is a triangle box/cab within a square cab. You can see the the screws on the back outlining the triangle shape inside. The port on the back reminds of this :rock:

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I mentioned in the other thread, these cabs sound awesome. The sound is huge and tight. I played a Friedman naked thru one and it killed. Too bad they don't make them anymore and they didn't catch on. They were fairly pricey I think. One of the best I've played through.
 
errrrrl":37yjpnjv said:
BC Audio":37yjpnjv said:
Mismatching impedance within the cab means mismatching how much power goes to each speaker. Doesn't seem like a good idea to me. Couldn't find anything on their web site.
Click to expand...

I found a 2011 discussion and looks like the member "vain_guitarist" is from 3rd power.. in that link below he goes into detail on voltages and impedance if you are curious.

http://www.thegearpage.net/board/index.php?threads/3rd-power-amps.807304/#post-10584946
Click to expand...

In that thread the 3rd power rep says these 3x12 cabs have an impedance of 5.3 ohms, and that 3rd power amps run a custom MM transformer to operate safely at 8 ohms (mismatch) with this cab. However, for safety you should probably set your amp to 4 ohms to minimize the mismatch.
 
thegame":6lvftl6r said:
errrrrl":6lvftl6r said:
BC Audio":6lvftl6r said:
Mismatching impedance within the cab means mismatching how much power goes to each speaker. Doesn't seem like a good idea to me. Couldn't find anything on their web site.
Click to expand...

I found a 2011 discussion and looks like the member "vain_guitarist" is from 3rd power.. in that link below he goes into detail on voltages and impedance if you are curious.

http://www.thegearpage.net/board/index.php?threads/3rd-power-amps.807304/#post-10584946
Click to expand...

In that thread the 3rd power rep says these 3x12 cabs have an impedance of 5.3 ohms, and that 3rd power amps run a custom MM transformer to operate safely at 8 ohms (mismatch) with this cab. However, for safety you should probably set your amp to 4 ohms to minimize the mismatch.
Click to expand...

Hmm.. I need to find my multi-meter check the ohms and confirm this. :(
 
sg guy":3kkd62xn said:
-did ya try the mode 4 cab?
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I did actually, awhile ago... I was originally thinking of getting that to match my Mode Four head (yes I have one lol) just for shits and giggles. I thought it sounded ok but thought it had a slightly darker and muddier tone than I was looking for.
 
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