Is this possible???
Parallel Wiring Twin 16 Ohms With Stereo/Mono Switch???
- Thread starter Inspector #20
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Amp Mad Scientist
Ambassador of Heresy
Each speaker is 8 ohms individually.
Each pair of speakers is wired in series.
In mono, the speaker cab is 8 ohm. The input is only the Left Jack.
But in stereo, it's 16 ohms per side.
If you use 16 ohm individual speakers,
in mono it's 16 ohms.
in stereo it's 32 ohms per side.
Method 2:
the pairs of individual speakers are in parallel, not series.
(same switch wiring as above)
If each individual speaker is 16 ohms,
then it's 4 ohms in mono and 8 ohms per side in stereo.
Method 3
Cabinet is always mono.
Method 4
Each individual speaker is 16 ohm. Each pair of speakers is wired in parallel.
In stereo, each pair of speakers is 8 ohms.
In Mono, there is a 4 or 16 ohm choice for the input.
The jacks have switches. (like a regular Marshall input jack)
There is a tip, and a tip switch.
There is a sleeve and a sleeve switch.
When there is no plug inserted, the tip and tip switch are connected together.
The sleeve and the sleeve switch are connected together.
If a plug is inserted, the tip disconnects from the tip switch.
The sleeve disconnects from the sleeve switch.
The blue lines are the switch contacts, not wires.
The switch is set so that 2 is connected to 1 and 5 is connected to 4.
If the switch is set the other direction:
2 is connected to 3 and 5 is connected to 6.
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Amp Mad Scientist
Ambassador of Heresy
And while we are on the subject:
there is real UK Cliff jack,
and there is fake knock off Cliff jack made in China.
Make sure that the jacks you buy are stamped "UK," because jack from China
is a real POS. The REAL Cliff Jack says: "Cliff UK."
The FAKE Jack does not say "U.K!" That's how you can spot it.
![[IMG]](/proxy.php?image=http%3A%2F%2Fwww.cliffinc.com%2Fproducts%2Fjacksockets%2Fjacksocketgenuine.jpg&hash=760206b56457ca891d5f0a9b8ea9de9e "[IMG]")
This is the POS jack which is not stamped "UK." Do not buy these jacks from China, they are worthless crap.
OP
Thank you, AMS...
Amp Mad Scientist
Ambassador of Heresy
I thought you were switching to 1X12 cabs.
If I used 1X12, I would go with EVM speakers but they weigh a lot. But IMHO, one EVM is almost as good as 4 Celestions. So, get roadies.
67plexi
Ambassador of Amps
I'm with AMS on this subject. Smoking deal.
reverb.com
Mesa Boogie Thiele 1x12 Guitar Cabinet With Original 200 Watt Black Shadow / EV EVM12 Speaker | Reverb
Mesa Boogie 1x12 Thiele guitar cabinet with original Black Shadow EVM12 speakerThis Mesa Boogie 1 x 12" Thiele speaker cabinet features a closed back, ported front cabinet design and a powerful 200W 12" 8-ohm Electro-Voice / Mesa Boogie Black Shadow speakerThis cabinet is in very good c...
reverb.com
Amp Mad Scientist
Ambassador of Heresy
I love EVMs but I just wish they didn't weigh 19 pounds each....I'm with AMS on this subject. Smoking deal.
Mesa Boogie Thiele 1x12 Guitar Cabinet With Original 200 Watt Black Shadow / EV EVM12 Speaker | Reverb
Mesa Boogie 1x12 Thiele guitar cabinet with original Black Shadow EVM12 speakerThis Mesa Boogie 1 x 12" Thiele speaker cabinet features a closed back, ported front cabinet design and a powerful 200W 12" 8-ohm Electro-Voice / Mesa Boogie Black Shadow speakerThis cabinet is in very good c...
jtcnj
Ambassador of the Crossroad
@Robert Herndon Are you not in the Burbank area anyway almost daily?
OP
Yep, that's my usual workplace....
OP
Ok,
Installed my new Cliff UK Jacks today. I'm getting 6.7 ohm in mono and 13.5 ohms in stereo.
Is it normal to have these lower than spec'd readings???
Installed my new Cliff UK Jacks today. I'm getting 6.7 ohm in mono and 13.5 ohms in stereo.
Is it normal to have these lower than spec'd readings???
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OP
Yes. 6.7 Ohms is indicative of an 8 Ohm speaker load::.
13.5 is indicative of a 16 Ohm speaker load.
When measured in this inaccurate way....not that there’s much choice.
OP
Cool, and I appreciate the tip. This is my first 'wired-from-scratch' cabinet....
Amp Mad Scientist
Ambassador of Heresy
6.7 is normal for an 8 ohm speaker load.
13.5 is normal for a 16 ohm speaker load.
It's not inaccurate.
You are reading DC resistance.
Speakers are measured / rated by impedance not DC resistance.
And so, your reading is good.
A second test:
Plug in a speaker cable.
Touch the end of the speaker cable to a 9 V battery.
Do all the speakers move in/out the same direction at the same time?
This is a speaker phasing test.
Just to see if the phasing of the speakers is all correct.
OP