Author Topic: Resurrecting a Beta 402 Cab  (Read 130 times)

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Offline FreddiThunderbastard

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Resurrecting a Beta 402 Cab
« on: January 29, 2017, 09:38:58 am »
Hello all,

I'm in the process of resurrecting a Sunn Beta 402 cab that was left as a sad empty shell. I've loading it up with 4 x Celestion V30s 16 ohm and having noticed the original cab was a 4 ohm set up, I need to rewire it.

I've had a look around at some 4x12 16 ohm speaker set ups but I'm just wondering if there is a recommended wiring set up for this cab as it's got the input socket and also a set of Parallel / Serial sockets for output too.

If I'm going to do this up I'd like to do it right so any advice would be great, also is 18 gauge wire going to be ok for the set up?

Thanks Again.

Freddi
Sunn Gear:
Sunn Beta 402 (4x Celestion v30s 16 ohm)
1968 Sunn Coliseum PA
1983 Sunn Mustang

Online EdBass

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Re: Resurrecting a Beta 402 Cab
« Reply #1 on: January 29, 2017, 10:45:33 am »
Do you want to keep it a 4Ω cab? If so, just wire two sets of 2 drivers in parallel and then wire those two pairs in parallel to the jack. Your only practical options with those drivers in that cab are 4Ω or 16Ω, and I think that choice should be determined by what amp you are driving the cab with, combined with whether or not your plan is to daisy chain another cab(s) to your 402. 

I'm a fan of using the heaviest gauge copper I can practically use.

Offline FreddiThunderbastard

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Re: Resurrecting a Beta 402 Cab
« Reply #2 on: January 29, 2017, 11:26:31 am »
I'd like to take it up to a 16Ω cab, that's the reason I picked up the 16Ω celestions. I'll be running my Sunn Coliseum PA through it primarily. No plan to daisy chain any other cabs to it, justing setting this up as a stand alone cab.
Sunn Gear:
Sunn Beta 402 (4x Celestion v30s 16 ohm)
1968 Sunn Coliseum PA
1983 Sunn Mustang

Online EdBass

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Re: Resurrecting a Beta 402 Cab
« Reply #3 on: January 29, 2017, 02:02:14 pm »
Wire two sets of 2 drivers in series and then wire those two pairs in parallel to the jack.