So I need to do one of my performances in school but I need my amp to do the songs I'm doing as they use distortion. I have a Spider IV 150w Head and 4x12 Cab. I can't take the entire thing to my school so I was hoping I could just take the head but I was wondering if it would be okay. The school only has 1x12 Cabs that I can use but I don't know if it would blow the cab and I don#'t want to damage schools equipment. What do I do? Would my head blow the cab?. Any response is greatly appreciated, thanks
if the speaker is rated high enough to take that wattage and the ohm setting matches then you are fine otherwise you may have issues.
Grab a screwdriver, open them up (if they're not already open back) and find out what the speaker is (name) and what the impedance rating is (8 ohm, 16 ohm) and then get back to us.

Do they have more than one 1x12 available? You should have two outputs on the back of your head so that you can plug two 8 ohm cabinets into the head.
I run my Bugera 333XL at 8 ohms into a little Line6 1X12 with an Eminance speaker in it, sounds great, kind of switches the timbre over to a more "fender" like complexion. I just don't turn it up higher than like 3-5ish so I don't blow the cab out and I'm fine.
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Quote by 11traversd
I have a Spider IV 150w Head and 4x12 Cab. I can't take the entire thing to my school

If this is going to be an ongoing issue, you might consider finding a good carpenter (or a buddy in a wood shop class) and handing him the plans (http://www.realoldiesradio.com/docs/EV/ElectroVoice_TL806.pdf ) for a 12" Electrovoice TL-806 cabinet. Built of 3/4" plywood, it's about 14 x 13 x 17.5" high.

I suggest that he use Loctite Premium PL glue (this stuff: http://www.loctiteproducts.com/p/pl_ca_prem/overview/Loctite-PL-Premium-Polyurethane-Construction-Adhesive.htm ) available in any Lowes or Home Depot to keep it airtight.

Don't tolex it; you can finish it with Acrytech Duratex roller grade (same thing the Pro Audio folks use): http://store.acrytech.com/speaker-cabinet-coating-duratex-roller-grade-trial-size-kit-black.html

If you can find an EV-L 12" speaker, you'll find that the cabinet was specifically designed for that speaker. The best substitute is an Eminence Dela Pro 12A (http://www.eminence.com/pdf/Delta_Pro_12A.pdf) (https://www.amazon.com/Eminence-Professional-DELTA-PRO-12A-Speaker/dp/B0009HBHD8 )

Both speakers will handle up to 400W of power, and the cabinet will outperform your 4x12 when it comes to clean bottom end.

FWIW, this setup is sold commercially as the Mesa Thiele cabinet (http://www.mesaboogie.com/cabinets--simulators/guitar-cabinets--simulators/compact-series/1x12-thiele-front-ported.html for specs). Mesa currently uses a Celestion C90 "Black Shadow" and rates the cabinet at 90W and sells it at $449. They sell the C90 for $129 separately For the same price you can install the Eminence Delta Pro 12A and have a cabinet that will handle five times the power and produce better low end.

There IS a guy who built one of these with extensions on either side to accommodate a wide head. I honestly don't recommend it; it just makes the cabinet larger and heavier. But the article itself offers some build and hardware tips. http://www.instructables.com/id/Build-a-Ported-Guitar-Cabinet/