OHM and Cab Wiring Question

[mwalluk]

I have a 212 cab that is currently wired as 16 ohm mono (with 2 celestion 8 ohm speakers), if I put in two 16 ohm speakers wired parallel would that make it an 8 ohm cab? If it's in series, does it then become 16?

Anyone have any schematics?

Next question is I have a jet city 20 watt combo and 112 ext cab. Both currently have a single 16 ohm speaker in it. The speaker out has 16, 8 and 8. When using just the combo I use the 16 speaker out, but when using the ext I use BOTH 8 ohm outs...

that said, If I replace the 16 ohm speaker with an 8 ohm speaker in both the combo and ext cab, do I still use both 8 ohm outs????

 

[mwalluk]

Re: OHM and Cab Wiring Question

 

[mwalluk]

Re: OHM and Cab Wiring Question

If I wire it in series, it would have a 32 ohm, what speaker out would I use? Is there any benefit to wiring it in series?

 

[ratherdashing]

Re: OHM and Cab Wiring Question

I have a 212 cab that is currently wired as 16 ohm mono (with 2 celestion 8 ohm speakers), if I put in two 16 ohm speakers wired parallel would that make it an 8 ohm cab? If it's in series, does it then become 16?

Two 16 ohm speakers in parallel = 8 ohms total.

Two 16 ohm speakers in series = 32 ohms total.

Anyone have any schematics?

Parallel: connect the positives of both speakers to the jack tip. Connect the negatives of both speakers to the jack ring.

Series: jack tip -> speaker 1 positive. Speaker 1 negative -> speaker 2 positive. Speaker 2 negative -> jack ring.

Next question is I have a jet city 20 watt combo and 112 ext cab. Both currently have a single 16 ohm speaker in it. The speaker out has 16, 8 and 8. When using just the combo I use the 16 speaker out, but when using the ext I use BOTH 8 ohm outs...

that said, If I replace the 16 ohm speaker with an 8 ohm speaker in both the combo and ext cab, do I still use both 8 ohm outs????

No, because your amp has those two 8 ohm jacks wired in parallel. It's expecting the total load to be 8 ohms, which is what you get with two 16 ohm cabs. If you replace those 16 ohm speakers with 8 ohm, your total load will drop to 4 ohms.

 

[mwalluk]

Re: OHM and Cab Wiring Question

No, because your amp has those two 8 ohm jacks wired in parallel. It's expecting the total load to be 8 ohms, which is what you get with two 16 ohm cabs. If you replace those 16 ohm speakers with 8 ohm, your total load will drop to 4 ohms.

So I pretty much have to keep 16 ohm speakers in it if I wanna use both combo and ext cab...

 

[ratherdashing]

Re: OHM and Cab Wiring Question

So I pretty much have to keep 16 ohm speakers in it if I wanna use both combo and ext cab...

With that amp, yes.

 

[mwalluk]

Re: OHM and Cab Wiring Question

For my 212 cab, if I swap out the 8 ohm speakers for 16 ohm, is there any benefit to wiring it in series or parallel?

If it's in series at 32 ohms, what speaker out would I use? My amp (VHT Deliverance) has a 4, 8 and 16?

 

[ratherdashing]

Re: OHM and Cab Wiring Question

For my 212 cab, if I swap out the 8 ohm speakers for 16 ohm, is there any benefit to wiring it in series or parallel?

If it's in series at 32 ohms, what speaker out would I use? My amp (VHT Deliverance) has a 4, 8 and 16?

Series vs parallel makes absolutely zero difference in tone, and 32 ohms is ridiculous, so parallel is really your only option.