lore
New Member
Posts: 1
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Post by lore on Feb 4, 2018 7:42:16 GMT -7
Hi guys, I’m looking into buying a Dr Z Maz Jr 18 Head, I am checking with the seller if it’s the one with or without the 16 ohm speaker output. I have an Orange PPC 4x12 cab (with Vintage 30 speakers), can the Dr Z head be run with it (if it has the 16 ohm output)? If it doesn’t have the 16 ohm output I imagine I cannot use my 4x12 cab is that correct or can I? Thanks
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Post by daddyelmis (Greg) on Feb 4, 2018 8:46:37 GMT -7
Others will chime in I’m sure, but my understanding for years and years is that matching impedance is best, but you can safely connect a higher impedance cab (16 ohm) to a lower impedance amp output (8 ohm), but not the other way around. The efficiency and top power of the amp will be reduced but no damage. Going the other way can potentially damage the amp (although there are many articles out there that suggest only cheap transformers are at risk by a slight mismatch - that is running a 16 ohm output into an 8 ohm speaker).
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Post by headshrinker (Marc) on Feb 4, 2018 10:06:36 GMT -7
^^^^^^^ daddyelmis above has got it. Depending on the impedance of the speakers in the 412, you may be able to rewire it to 8 ohms. If it has push on speaker connections, it's pretty simple.
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Post by daddyelmis (Greg) on Feb 4, 2018 10:33:07 GMT -7
If the v30’s are each 16 ohm, which is likely, you can easily wire the cab for total impedance of 16 or 4 ohm. Getting to 8 will require a switch. 4x12’s are usually wired for 16 ohm so that if you run a full stack (2 4x12 cabs) they’ll be in parallel for a total impedance at the amp of 8 ohms.
There’s a gazillion good articles and diagrams on wiring speaker cabs - google it and you’ll get more info than you ever wanted. 😁
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Post by fishyfishfish on Apr 26, 2018 10:05:09 GMT -7
I was always told (and practiced) that small can go into big but keep the division equal. I.E.: 8 ohm amp output into 16 ohm cab is OK, but not the other way around. OR, grab a screw gun and rewrite the cab. As stated above plenty of wiring diagrams on the inter webs.
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