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General Category => Jam Room => Topic started by: +--Stonah--+ on February 27, 2012, 09:45:31 AM

Title: Simple question... good or not so good
Post by: +--Stonah--+ on February 27, 2012, 09:45:31 AM
Ok guys... i've got a sunn beta lead head and i got my hands on a shitty 16 ohm 412 cab (400 watts).
Is it ok if i run my beta lead that is ofcourse 4 ohms mono with this cab that is 16 ohms mono.
Just for the record, tried it and sounds fantastic.
I know that it is ok to run a head on 8 ohms for example but 16?
Will i burn something?  :-\
Title: Re: Simple question... good or not so good
Post by: Mr. Foxen on February 27, 2012, 10:00:55 AM
SS head should be happy with higher impedance cabs. Valve amps not so much.
Title: Re: Simple question... good or not so good
Post by: dunwichamps on February 27, 2012, 10:00:58 AM
Quote from: +--Stonah--+ on February 27, 2012, 09:45:31 AM
Ok guys... i've got a sunn beta lead head and i got my hands on a shitty 16 ohm 412 cab (400 watts).
Is it ok if i run my beta lead that is ofcourse 4 ohms mono with this cab that is 16 ohms mono.
Just for the record, tried it and sounds fantastic.
I know that it is ok to run a head on 8 ohms for example but 16?
Will i burn something?  :-\

rewire the cab to 4 ohms if u want to, best option

This is a SS head so im not entirely sure if a mismatch is bad
Title: Re: Simple question... good or not so good
Post by: +--Stonah--+ on February 27, 2012, 10:07:23 AM
Thanks for your quick responses guys.
Think that i'll run it like it is at the moment but definitely will be searching along the way for a dude that can do the rewiring.

Cheers!
Title: Re: Simple question... good or not so good
Post by: dunwichamps on February 27, 2012, 10:22:27 AM
Quote from: +--Stonah--+ on February 27, 2012, 10:07:23 AM
Thanks for your quick responses guys.
Think that i'll run it like it is at the moment but definitely will be searching along the way for a dude that can do the rewiring.

Cheers!

for reference you would wire all speakers in parallel to get 4 ohms. If you adventurous it can be made switchable.
Title: Re: Simple question... good or not so good
Post by: +--Stonah--+ on February 27, 2012, 10:38:12 AM
Quote from: dunwichamps on February 27, 2012, 10:22:27 AM
Quote from: +--Stonah--+ on February 27, 2012, 10:07:23 AM
Thanks for your quick responses guys.
Think that i'll run it like it is at the moment but definitely will be searching along the way for a dude that can do the rewiring.

Cheers!

for reference you would wire all speakers in parallel to get 4 ohms. If you adventurous it can be made switchable.

Oh yeah, if i can make it switchable that really would be something...Have to find someone to do that though!
Title: Re: Simple question... good or not so good
Post by: Discö Rice on February 27, 2012, 12:36:46 PM
Seems like wiring them in parallel would be a pretty easy mod.
Title: Re: Simple question... good or not so good
Post by: Baltar on February 27, 2012, 01:13:59 PM
(http://i8.photobucket.com/albums/a47/bren1973/4x12wiringParallel.gif)

I've got a lot of 4x12 wiring diagrams if anyone needs more.
Title: Re: Simple question... good or not so good
Post by: dunwichamps on February 27, 2012, 01:16:10 PM
have to make sure cab has 4 16 ohm speakers to do that. its possible that they are all 4 ohm speakers in series to get 16. If so then 4 ohms can be made using series/parallel combinations.

Title: Re: Simple question... good or not so good
Post by: VOLVO))) on February 27, 2012, 03:04:09 PM
With SS amps, you can't go lower than the minimum impedance. So, 4 ohms min = don't play at two. 4/8/16, all good, you're losing wattage with a mismatch like that, but volume loss is negligible.
Title: Re: Simple question... good or not so good
Post by: +--Stonah--+ on February 28, 2012, 08:06:48 AM
Quote from: SunnO))) on February 27, 2012, 03:04:09 PM
With SS amps, you can't go lower than the minimum impedance. So, 4 ohms min = don't play at two. 4/8/16, all good, you're losing wattage with a mismatch like that, but volume loss is negligible.

Yeah i get that but to be honest i really haven't noticed any volume loss but then again it's not that i'm cranking it up to 10 so... so far so good  ;)