Need help loading new Speakers...Ohms??

[tremonti]

Ok...I have a Marshall 1960 straight cab with the stock Celestion GT-75's I think. ​

I want to put 4 new Eminence speakers in(2 different types) in an X Pattern. Question: I run my single cab in stereo mode....right now with stock speakers I use the 8 ohm output on amp. ​

If I buy 2 new Eminence speakers for each side should I get 8 ohm speakers? I thought in stereo these two 8 ohm speakers, in series, would add to 16 ohms per side? If so are the stock Celestions 4 ohms a piece and add up to 8 ohms in series? Please help! ​

Also...what 2 Eminence speakers should I mix? I play in a cover band that does everything from Creed to Van Halen to Maroon 5....need clean and heavy distortion. I use a Mesa power 2:90 with 90 watts per side. So what speakers what ohms?? Can you mix speaker wattage...say a 30 watt with a 150 watter?​

Thanks!​

 

[tremonti]

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[VanR]

Well the speakers in Marshall 1960 cabs are 16 ohms. I would think that is what you want to replace them with.

 

[tremonti]

I am confused??? so I need to get four 16 ohm speakers for the Marshall cab? Wouldnt that be 32 ohms per side in series or am I not computing the ohms right??

 

[VanR]

Marshall cabs are 4-16 ohm speakers wired in series/parallel for a 16 ohm load. Or you can switch over to 4 ohm load (parallel). Or stereo 8 ohm load each side (2 speakers in parallel). If you are talking about the standard Marshall 1960B cabinet. If this is some other Marshall 4-12 then all bets are off.

 

[tremonti]

It is a 1960B cab.... so 16 ohm speakers....what speakers should I mix in an X Pattern? Want Eminence.....I think the Wizard and maybe te Govenor?? Whatda think??

 

[tremonti]

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[tremonti]

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[iglubov]

4x12:
2 pairs of 16 ohm speakers -
So, Left side - R(par)=R1xR2/R1+R2=8 ohm
Right side the same thing....8 ohm
Then, you're got two options to connect Left and Right sides: parallel and serial.
Parallel: R=Rl x Rr/Rl+Rr=8x8/8+8=4ohm
Serial: R=Rl + Rr=8+8=16 ohm
So, if you put 4x8 ohm speakers you will have R=2 ohm and R=8 ohm
I think you have to play with 4 x 16 ohm speakers.

 

[tremonti]

so what 4 eminence speakers for my marshall 1960B cab? 2 wizards and 2 govenors??? Have Mesa 2:90 power amp with 90 watts output per side. Play variety from prisine clean to heavy distortion. HELP!!!

 

[iglubov]

I believe it will work as soon as they are 16 ohm-s speakers.

 

[tremonti]

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