OR15 cabs advice

[Desmosedici]

Hi guys
I am currently using OR15H into a single PPC112.
Considering buying the PPC212OB as everyone seems to like it's full sound.
So, would it be advisable to use them both together and will they share the power (ohms) appropriately?
...I don't quite get how the ohms rating of a 1 speaker cab can be the same as a 2 or even 4 speaker cab(16 ohms)
Nevertheless, do you think it will share and sound ok?
Thanks in advance.

[Ronnie Robinson]

Hi, both are 16 ohms so yes you can use them together...... use a speaker cable from each of the 8 ohm outputs into each of the cabs.

The 212 OB is an excellent cab , I think once you've got it you'll as stop thinking about using the 112!

[Bensnake]

No problem using two 16 ohm cabs from your amp's 8 ohms jacks. A cab's load depends on the internal wireing (series, parallell or both) and of course each speaker's load.

[Les Paul Lover]

Yes, the ohms will be alright, simply plug each 16ohms cab into the 8 ohms tap.

One thing worth considering though..... Each cab will see the same power, and that power will then be divided by the number is speakers in each cab. Say your run your OR15 at full tilt clean, you'll get 15w output. So each cab will see 7.5w..... But The speaker in the PPC112 will see 7.5w, whilst each speaker in the PPC212 will see only 3.75w.

In essence, your PPC112 will sound a touch louder than your PPC212. In practice I don't really know what this would sound like. Other forum members have done that in the past, some have liked it, some said they didn't.

In any case, the OB212 has a great reputation.

[Desmosedici]

Thanks fellas, much appreciated.
Yeah, I'm wondering how it will sound too. Maybe the 112 will get more presence in this 'new relationship' than I really wanted. Keen to try it out though.
Thanks for your input, I'll report back my results.

[Desmosedici]

Another quick question please.
Do I get a volume drop , or increase if I add more cabs?
How would the OR15 handle 2x 212s compared to the 112 I'm currently using?
Thanks again

[Les Paul Lover]

You will get a bit more volume, but not much. What you will get is a much fuller sound, thicker, richer.

[Desmosedici]

Righteo, thanks
I shall report back

[Desmosedici]

Ok done, so it should arrive next week.
But I have yet another question since my knowledge of electrical propagation and distribution is limited (very limited.... Still not sure why the electrons don't fall out of the unplugged wall socket if left on..... Nevertheless)
Would the speakers share the output more equally if they were piggy-backed from one cab to the other?
So instead of from the 2 8ohm amp outlets, taking a single lead to The 112 cab, then from there to the 212.
That would still be a parallel wiring and all speakers would be equal in watt division..... or am I barking up the wrong tree?
Maybe it doesn't matter?

[Bensnake]

Ok done, so it should arrive next week.
But I have yet another question since my knowledge of electrical propagation and distribution is limited (very limited.... Still not sure why the electrons don't fall out of the unplugged wall socket if left on..... Nevertheless)
Would the speakers share the output more equally if they were piggy-backed from one cab to the other?
So instead of from the 2 8ohm amp outlets, taking a single lead to The 112 cab, then from there to the 212.
That would still be a parallel wiring and all speakers would be equal in watt division..... or am I barking up the wrong tree?
Maybe it doesn't matter?

You can do that though there's no point considering your amp's got two 8 ohm outputs. The total load would still be 8 ohms daisy chaining the two cabs from one of your amp's 8 ohm outputs. The downside with daisy chaining is that if one cab brakes the other gets quiet as well.

[Desmosedici]

Hey guys
I received the 212OB a few days ago.
Thanks for your help, it sounds great!
I have it and the 112 (which actually sounds louder or more prominent, probably because it's on top)
Yet to take it out of the house to the band though.

While I'm here, I need your advice on my OR15.
I've had it for 2 years, and although I've never noticed it before, I'm getting a lot of static buzz from the Gain progressively from 11 o'clock and above (not that I use it there that often..... I fact it usually sits at 10 o'clock along with the Volume also at 11 o'clock) This is just from the amp alone, not the guitar, nor playing, and can't be isolated..... tried everything.
Anyhoo, how normal is it to have a fairly loud hum at this level ?
Thanks again

[Les Paul Lover]

I'm not sure how much you describe as a lot..... But if you have had it 2 years, played it regularly,it could be valve related.