15 OHM speakers? wow. rola cl80s. Help!

[Rob Tahan]

So i just picked up a pair of Celestion Rola CL80's. Turns out they are rated at 15 ohms each. Thats right..FIFTEEN ohms.

What should i do? My diezel was running 8 ohms mono. Should i just pair them with another set of 16 ohm speakers, or would 8 ohms be ok.

I dont even know if i can use 4 16 ohm speakers in a cab that says 8 ohms on the back...
Im an idiot when it comes to ohms and stuff like that.

 

[thegame]

Treat the 15 ohm speakers as if they're 16 ohms. Do not pair them with 8 ohm speakers. You can use 4 16 speakers in your cab, as long as you pull the 8 ohm ones out.

The ohm rating of speakers is not an absolute value; most "16" ohm speakers measure anywhere from 13 - 15 ohms.

Besides, the actual ohms value the amp 'sees' while playing, especially at high volume, is constantly changing.

 

[Rob Tahan]

nice. So wire them in series or paralell..?
Im guessing the inputs on the back of the cab dont make a difference for the ohms...? (mono 8ohms)

 

[thegame]

nice. So wire them in series or paralell..?
Im guessing the inputs on the back of the cab dont make a difference for the ohms...? (mono 8ohms)

You can wire 4 16 ohm speakers in parallel for a 4 ohm load, or series/parallel for a 16 ohm load.

If the cab was previously mono at 8 ohms, then your cab will end up being 4 or 16 ohms mono, depending which method, stated above, you use. There are plenty of wiring diagrams on the net as I'm too lazy to search it out for you.

 

[Rob Tahan]

From what little knowlege i have i am under the impression that it will sound better running them PARALLELL..?

 

[blackba]

Very curious how they sound. Are they CL80's or G12-80's?

I had a Celestion Alnico Gold, it was listed as 15ohms. I treated it as a 16ohm speaker. With the impedance of a speaker, there is the DC component that you can measure with a meter and an AC component that is frequency dependent. That is why a 15 or 16ohm speaker does not measure 15 or 16ohms with a meter (as they measure DC resistance)

 

[Rob Tahan]

Rola G12-80s (the originals ) Everyone says they are money... I'll find out soon.

But i need to know how to wire them...

 

[thegame]

From what little knowlege i have i am under the impression that it will sound better running them PARALLELL..?

A little different, not better or worse. Some amps/cabs sound better one way or the other. Its a fun experiment.

 

[thegame]

Rola G12-80s (the originals ) Everyone says they are money... I'll find out soon.

But i need to know how to wire them...

My favorite speakers. There are different versions of the Rola 80s. Do you know what the 'T' code is on the frame of the speaker ? Or the number printed on the back of the cone ?

If these don't work out for you, let me know.

 

[Rob Tahan]

Rola G12-80s (the originals ) Everyone says they are money... I'll find out soon.

But i need to know how to wire them...

My favorite speakers. There are different versions of the Rola 80s. Do you know what the 'T' code is on the frame of the speaker ? Or the number printed on the back of the cone ?

If these don't work out for you, let me know.

No but i can check. How do you tell which ones the 444's are vs the 1777's..?

Oh... and how do i make it so that i can use the 16ohm mono out of the diezel into the cab..?

 

[thegame]

Rola G12-80s (the originals ) Everyone says they are money... I'll find out soon.

But i need to know how to wire them...

My favorite speakers. There are different versions of the Rola 80s. Do you know what the 'T' code is on the frame of the speaker ? Or the number printed on the back of the cone ?

If these don't work out for you, let me know.

No but i can check. How do you tell which ones the 444's are vs the 1777's..?

Oh... and how do i make it so that i can use the 16ohm mono out of the diezel into the cab..?

The 'T' number will tell me which cones you have as I know what all the 'T' codes are.

As explained before, wire the speakers series/parallel for a total of 16 ohms to use with the 16 ohm output on your amp. Google 'wiring 4x12 cabinet series/parallel'.

 

[Buckeyedog]

Wire them in series/parallel. Go to Stoneage cabs, I believe they have some nice wiring diagrams on their site.

So two 16 ohms in series is 32 ohms. Run each "series" set in parallel and you are back to 16 ohm mono signal.

Or run them all parallel for a 4 ohm load as addressed above. I'd go with the 16 myself.

 

[Rob Tahan]

Rola G12-80s (the originals ) Everyone says they are money... I'll find out soon.

But i need to know how to wire them...

My favorite speakers. There are different versions of the Rola 80s. Do you know what the 'T' code is on the frame of the speaker ? Or the number printed on the back of the cone ?

If these don't work out for you, let me know.

The t code is t3103
which ones are they?

 

[thegame]

The t code is t3103
which ones are they?

Congratulations, you have the 444 version, which sounds better IMO than the 1777. Though I really like the G12-80 1777 as well and find it much better than the Classic Lead 80, Mesa MC90 and Egnator Elite 80, all of which use the 1777 cone.

In a nutshell, the old 80s sound more British and not as neutral/flat as the newer versions.

 

[Rob Tahan]

I kinda like the idea of the speaker sounding "flat" though...
Hopefully "british" doesnt equate to "brighter" tone..
What i want is warm and punchy

But yes, i have heard that the 444 is the best of them all so hopefully it will be a warm sounding speaker.