Click each question to see its answers.
Can this work with 2 16 ohm speakers in a 212 cab
Asked by Anonymous on May 10th, 2016.
Yes, two 16 ohm speaker may be used as this contains no active components. However, the markings showing each input's impedance will not match the actual impedance.
With (2) 16 ohm speakers what will the actual impedance be then? impedance
- 16 Ohm Left/8 Ohm Mono
- 16 Ohm Right
- 32 Ohm Mono
I just relabeled plate with a brother p-touch labeler as I setup with two 16 ohm speakers.
using a 2x12 setup. if i connect to one of the 8ohms mono connections and `INSERT AN OPEN PLUG (NOTHING CONNECTED)` into the other 8ohm connect will both speakers output sound?
Asked by Anonymous on September 28th, 2016.
No, only one of the 8ohm speakers will output sound.
How does it sense 4 ohm stereo or 8 ohm mono through the same jack?
It does not sense anything since this is a passive circuit. The resulting ohmage is determined by the ohms of the speaker.
It has switching jacks. When you insert a plug into the jack it either opens or closes a circuit to put your speakers in either series, parallel, or a series-parallel combination. The individual speakers do not change impedance, however. That is NOT possible. They all add or divide (or both) together to give you the possible ways they can be wired and the resulting impedance. 4 4ohm speakers can be wired in a series-parallel combination resulting in 4ohms. 4 4ohm speakers can be wired in series resulting in 16ohms. 4 4ohm speakers can be wired into 2 separate series pairs of 8ohms each (Stereo).
Can I run a Y cable out of one 8 ohm output from my head and split it into the two 8 ohm stereo jacks with two 8 ohm speakers? If I did that, what ohms would my amp see? I want to find a way to go out of an 8 ohm output and make the cab 8 ohms as well.
Asked by Anonymous on May 25th, 2018.
I believe this would be the same as running the two 8 Ohm speakers in parallel so the load the amp would see would be 4 Ohms. If this setup ran the two 8 Ohm speakers in series (I don't believe it does) Your amp would see a 16 Ohm load.
If running two 8 Ohm speakers and an amp rated for 8 Ohms, simply plug the speaker cable into the 8 Ohm left input and plug a dummy cable to the 8 Ohm right input jack. Your amp will only see an 8 Ohm load.
I think he wants to use *both* 8-ohm speakers at the same time, while matching his 8-ohm amp output. I do, too. So again, would using a Y cable into both stereo inputs, would the amp see an 8-ohm total load and safely power *both* speakers at once?
Again, if using a Y cable and plugging into both top jacks on the plate would essentially put the two 8 Ohm speakers in parallel, making the rating 4 Ohm. We do not suggest doing this.
I am building a 2x12 cab with two 8 ohm speakers. When I am playing alone, I would like my amp to sound through both speakers. But when I am playing with my son, I'd like to use the two speakers just like two separated cabs (my son's amp on one speaker, and mine on the other speaker). Is the Plug n Play plate the right choice for me? Which diagram should I be looking at?
Asked by Anonymous on May 6th, 2019.
If your amp has a speaker jack for a 4 or a 16 Ohm load, yes, this can be done. The first drawing in the "Speaker Z Examples" shows how one would wire a 2 speaker cab with 8 Ohm speakers. You and your son would be able to plug each amp into the top left and right jacks when playing together, and when you are playing b yourself, plugging into the 4 or 16 Ohm mono jack will make both speakers run in unison.
Thank you so much for the quick and clear answer!
This is a helpful question. Does the 4 ohm or 16 ohm jacks work as it is strictly a "pass through" jack at that point?
The two 8 Ohm jacks are the only two that can used simultaneously on the jack plate.
Is there a way to use this product to get a 4x12 speaker cabinet to run all 4 of its 16 ohm speakers at 8 ohms?
Asked by Anonymous on February 26th, 2016.
See the wiring diagrams above for reference but generally you can run in either series or parallel when wiring up speakers. It's more than likely possible but the labeling may not match.
You are not going to get an 8 ohm load out of 4 x 16 ohm speakers, only 4 (all in parallel) or 16 (2 pair in series, then that pair of pairs in parallel). Wired per the 4 x 16 ohm speakers you would get the impedance's marked on the plate.
Correct, but you can get two 8ohm loads from 4 16ohm speakers in stereo.
I have a 2x12 cab with 2 8ohm speakers. Is there any way to get 8ohm mono? I want to connect it in parallel with another 8ohm 4x12 cab, so i can get a total 4ohm load to match my 4ohm bassman head(2x12 8ohm + 4x12 8ohm= total 8ohm load if connected in parallel, right?). Maybe i can get it through the ''one side only 8ohm mono''? Thanks
Asked by Anonymous on April 3rd, 2017.
You can run this at 8ohm mono but it will only be one speaker.
I have a 2X12 cabinet with different 8ohm speakers in it that I would like to be able to use separately (only one speaker), as well as together at 4ohms. Does this jack allow this? I assume the jack labeled 16ohms would basically be the 4ohm mix of the 2X 8ohm speakers?
Yes, here are your options: 4 ohm mono, 8 ohm left only mono, and 8 ohm right only mono. Checkout the plug-in schematic for how these are wired and hooked up.
I have 2 8ohm speakers trying to get 16ohms mono
& 8ohms stereo each side
How do I do this with the plug & play?
Asked by Anonymous on May 23rd, 2019.
Simply hook up the jack plate as shown in the "Speaker Z Examples" drawing for two 8 Ohm speakers.
Is this correct? I have a revv generator 120 and an avatar 2x12 cab with two 8 ohm speakers. The amplifier has 2 4ohm outputs, 2 8 ohm outputs, and 2 16 ohm outputs. Do I connect two separate speaker cables to the 2 8 ohm outputs of my amp and plug them into the 8 ohm stereo inputs of the cab?
We can not say that this would be the case with your avatar cab if it doesn't have this plug and play jack plate on it. If it does and it is wired as shown in the speaker wiring diagram, yes, you would be able to do that.
If I connect a cable to the 8 ohm right side my ohmmeter reads 8 ohms without having to put an open plug in the 8 ohm left/4 ohm mono jack. So it seems I can you 8 ohm right without needing an open cable in the the 8 ohm left/4 ohm mono jack. Is this correct?
Asked by Anonymous on July 23rd, 2019.
First you will want to check to make sure that everything is wired as shown in the diagram and that two 8 Ohm speakers are being used (other Ohm ratings will give other readings) and if both of those are accurate, there could potentially be an issue with the plate and you may need to contact us to make a return.
Thanks for your reply to previous question asked on 7/23/19: Some clarification: With two 8 ohm speakers connected per the wiring diagram, plug in 4 ohm only input measures about 4 ohms; plug in 16 ohm input only about 16 ohms, plug in both 8 ohm inputs measures about 8 ohms each, all as expected. Finally plug in 8 ohm right ONLY measures about 8 ohms. Checking the wiring diagram this appears to be what should happen, as a plug the right 8 ohm input alone does not appear to result in a parallel connection of the two speakers and the left speaker will be disconnected. Can you look at the diagram an d tell me if this is correct or not? Thanks.
If I use this jack in a 2x12 cab with two 8 ohm speakers will I be able to run two heads into the cab ? If each head is plugged into the 8 left and 8 right inputs respectivly (each head running at 8 ohms)?
Asked by Anonymous on March 10th, 2018.
Yes that is exactly what this is designed to do!
I have a 2x12 both speakers 8 ohm. I don't get how the left out can be 8ohm and 4. If I only want to use the left speaker at will that jack be 8 or 4? Essentially I'd like to use one speaker at a time at 8ohms or both in series at 16 or two amps one to each speaker at 8ohms.
Asked by Anonymous on April 20th, 2018.
With two 8 Ohm speakers in a cab it would work as follows: Left input would be 4 Ohm using both speakers (Parallel wiring) or 8 Ohm when used in stereo (If two amps are being plugged into both the left and right input) When using two 8 Ohm speakers, the only mono options are 4 Ohm (top left jack) and 16 Ohm (bottom left jack) The only case in which it would work as you need would be if both speakers in your cab are 16 Ohm.
I use my Plug and Play exactly as the question poses. It has two 8 ohm EVM speakers. The short answer to your question is that using the PP's top left jack will automatically put the two speakers in parallel for a 4 ohm load. If you plug a jack into the top right jack, the PP splits the speakers, so each will run at 8 ohms independently (stereo). If you want to run one speaker at a time at 8 ohms that's not problem, but you need to have both jacks engaged to make the 'split'. So run your amp into one side (whichever you want), and put a 'dummy' (ie unconnected) plug or cable into the other stereo jack. It works great.
Hello...can I use 2 - 16 ohm speakers in parallel for an 8 ohm cab when playing by myself? Wish to hear both speakers. Reads like if I plug into the 8 ohm left jack I would hear only one speaker? Thanks in advance for reading my post - question.
Asked by Anonymous on August 20th, 2019.
Using two 16 Ohm speakers with this jack (series and parallel wiring are a moot point as this jack plate does both) will result in the labels being incorrect. Looking at the backplate, it would read from left to right, top to bottom: 16 ohm left (or 8 ohms mono), 16 ohms right, and 32 ohms.
When used with a 4x12, would I be right in saying that the two jacks labelled Mono both result in sound coming out of all four speakers?
Asked by Anonymous on October 4th, 2019.
Thank you for asking this question. I wondered this as well.
I have this in a 4/12 with four 16ohm speakers, so it functions as stated on the plate. Can I keep one 4ohm head connected to the 4ohm mono, and a second 16ohm head connected to the 16ohm mono, at all times while only one head is in use at a time, or would that mess up the loads for each because the circuits are always closed?
Asked by Anonymous on February 14th, 2020.
You will always want to disconnect the head that isn't in use.
NO! Do not leave both amps plugged in to the same circuit. Your output transformer will fry or transistors if it's solid state. You can plug them into the 8ohm jacks though. They are separated from each other Right and Left.
Can it be used in a 4x12 cabinet with 4 - 8ohm speakers?
Asked by Anonymous on March 25th, 2016.
Four 8 ohm speakers can be used but the impedance markings on the plate will not match up correctly.
I'm using two 16 ohm units in each of the cabinets I'm makin. 16 ohm Weber stuff and Celestion stuff in each cab. Hook 'em up as if you were hookin up 8 ohm units?
Asked by Anonymous on August 13th, 2016.
As long as the two cabs you use have a matching impedance, you can use them in stereo. It does not have to be 8ohms. It could be 2,4,6,8,16ohms, etc. You will just have to remember that the labeling on the unit will not match your actual impedance.
I have 2 x 8 ohm speakers and connected it like the diagram (top of Speaker Z Examples page); what does that translate to for the outside jacks in terms of ohms????
Asked by Anonymous on January 16th, 2017.
This would be 8ohm left and 8ohms right.
The dimensions are 4.35 x 4.03. Can you tell me what the depth is? thanks.
Asked by Anonymous on January 24th, 2017.
The depth of this jack plate is 1.66" (42.3mm).
This seems to be a common theme among questions, but I really want to be 100% sure. If I have 4 16ohm speakers in a 4x12 and wire them exactly as it shows in the wiring diagram above (2nd example in the Speaker Z pdf), will the labeling be correct? 2 16ohm speakers in parallel on each side (L&R) will prove the labeling true, correct?
Asked by Anonymous on February 2nd, 2017.
Yes, if you have two pairs of 16ohm speakers running in stereo each pair will be 8ohm and reflect the labeling.
Silly question, but how would I wire up just a single speaker using this? I built a little 1x12 extension cab a while back and ordered a Plug and Play with the thought that I would eventually build a 2x12 that would replace it. Not sure which wires connect to which inputs and what to do with the wires not connected to the speaker. Thanks and cheers.
Asked by Anonymous on May 27th, 2017.
You can use the red and black wire and this should operate in mono at the designated ohms on the back of your speaker. You would only use the upper left handed jack.
To help everyone here and myself: is this circuit nothing more than the equivalent of 1/4" jacks with multiple contacts that make or break circuits? In other words, your circuit has no load, does not affect a load, it only provides a pathway (connectivity) from the 1/4" plug that is inserted, to the speaker terminals. Correct?
Asked by Anonymous on August 10th, 2017.
Yes, this is exactly what the Plug and Play is!
I have a 412 cabinet with 4 - 8 ohm speakers to be wired in series-parallel so I have 8 ohms impediance total. what would be the correct wiring schematic for this setup ?
Asked by Anonymous on October 18th, 2017.
Four 8 ohm speakers can be used but the impedance markings on the plate will not match up correctly. The red and white wires are positive while the green and black are negative.
I have 4/12 cab 8ohm how do wire speakers.. plug and play jack plate 8ohm stereo 4&8ohm mono
Asked by Anonymous on October 22nd, 2017.
Please refer to the schematic and wiring examples above.
with a 2x12 cab can I use one head at 4 ohms and another head at 16 ohms and with an a/b switch get both speakers on each channel?
Asked by mellis701 on November 22nd, 2017.
You will need to use speakers that all have the same ohms.
There are 4 connectors. I have 4 speakers. Shouldn't there be 8 connectors? Was I supposed to buy 4 more connectors for this to work?
Asked by Anonymous on February 3rd, 2018.
Check out the speaker wiring diagram above. If you have four 16 ohm speakers you are wiring these in series. If you have four 4 ohm speakers then you are wiring them in parallel. You might need some extra wire depending on your configuration.
This will be going in a 1x12 cab build (16ohm), but I may want to add an additional 1x12 at a later date. Can I plug the 8ohm left jack into the 8ohm right jack (making it an output) to run a seperate cab in parallel?
Asked by Anonymous on March 5th, 2018.
That would be beyond ability of this unit as you have the following options: 4 ohm mono,
8 ohm left + 8 ohm right stereo,
8 ohm left only mono,
8 ohm right only mono,
16 ohm mono.
Can this work with an 8 x 10 cabinet where the "L" & "R" are both 4x16ohm 10" speakers wired series parallel? I have 2 cabs, hoping for 16ohm "stereo", 8ohm mono ea. Will it have ability to to run them both together(32ohm ea) at 16ohms too if connected parallel? Will the series parallel wiring of the banks of 4 speakers mess up the circuit with the open plug?
Asked by Anonymous on March 10th, 2018.
If you have an 8x10 wired in series/parallel and each speaker is 16 ohms you will have a total ohm load of 32 ohms. Looking at the backplate, it would read from left to right, top to bottom: 16 ohm left (or 8 ohms mono), 16 ohms right, and 32 ohms.
Just to be sure about what I would get with a 4x12 with 8ohms speakers. If I wire each two pairs of speaker in series, I will have two pairs of 16ohms. I would then have:
8 ohm mono
16 ohm left + 16 ohm right stereo
16 ohm left only mono
16 ohm right only mono
32 ohm mono (not really making but well)
It that correct ?
Asked by Anonymous on March 26th, 2018.
I have two 16 ohm speakers in my cab. If I want to run two heads into this .... I should plug one in left and one in the right? Will the amp sounds be separated to individual speakers?
Asked by Anonymous on May 26th, 2018.
Using the stereo option you could run one 16 ohm speaker into one amp and the other speaker into another amp. With this in mind, the marking on the plug and play will not match the actual ohms.
If I run 2 16 ohm speakers and one 8 ohm speaker and wire them up like you show the wiring for 4 16ohm speakers (but obviously with just the 8 ohm on one side,) will the jacks still show the correct ohms?
Asked by Anonymous on May 29th, 2018.
No not with three speakers that are different ohms.
To run JUST one side at 8 ohms a dummy plug must be used in the other 8 ohm side?
Asked by Anonymous on June 7th, 2018.
Yes that is correct. Simply place a spare 1/4" jack into one of the 8ohm jacks to get 8ohms mono.
I have a 16ohm cab(2x8ohm in series)The amp has 2 ext.speaker jacks and calls for either 1 8 ohm cab or 2 16 ohm cabs.Advice???
Asked by Anonymous on August 25th, 2018.
It doesn't sound like the amp and the cab are compatible as is. You may need to change the speakers in the cab (either x2 4 Ohm speakers in series or x2 16 Ohm speakers in parallel) or replace the transformer in your amp. What amp model is in question? I may be able to provide more info with an amp make and model.
In the diagram when it says, for instance, "four 16 ohm speakers"...does that mean "wire this way to get 16 ohms" or "wire this way if your speakers are 16 ohms" ?
Asked by Anonymous on September 3rd, 2018.
The diagram shows how to wire four 16 Ohm speakers. So "Wire this way if your speakers are 16 Ohms" is accurate.
If I'm running 2x 4x12 cabs @16ohms each, my amp is seeing 8ohms parallel, would I connect the power to 16ohms on the plug and play to achieve this?
Asked by Anonymous on October 16th, 2018.
The 16 Ohm input on this jack plate is for series while the 4 Ohm mono is for parallel.
Why don't they make a plate that'd be labeled for two 16 Ohm Speakers?
Asked by Anonymous on November 1st, 2018.
This plate can be used with 16 Ohm speakers, and the labeled ratings on the plate will change. Looking at the backplate, it would read from left to right, top to bottom: 16 ohm left (or 8 ohms mono), 16 ohms right, and 32 ohms.
I have a 2 x 12 cabinet with two 8 ohm speakers. I have one amplifier (amp A) with one 4 ohm and one 8 ohm out, and another amplifier (amp B) with a single 16 ohm out. I want to use this one cab for both amplifiers- not both amps at the same time, but separately. Do I understand correctly that pugging amp A's 4 ohm into the 4 ohm mono input will power both speakers safely, and plugging amp B into the 16 ohm input will power both speakers safely? Again, using only one amp at a time here. The plug and play automatically switches from series to parallel wiring? Thank you!
Asked by Anonymous on October 31st, 2019.
Yes, that is the concept when using different jacks on this plate. You have the right idea with how this jack plate is best used.
Sorry if I missed this. I have a 2*12 cab of 50watts total. I can run 4 ohm at 50w, 16 ohms at 50w. If I plug into the left 8ohm it's 25w? If I run two heads into each 8ohm input, it's 25w for each head? Is there any way to run this cab as an 8ohm 50w cab using a single amp head? Also, if I want to use another 2*12 with this one, using one head, should the second 2*12 only be 16ohm? (And tap into the two 8ohm outs of my amp) thanks!
Asked by Albert Carraro on February 25th, 2020.
The answers to all of these questions are determined by the wattage rating of the speakers in your cab and the plug and play jack has no effect on that.
Is there ANY soldering required all? I really want to use this for a 212 but when I was looking at the diagram it showed in sections of the wiring that it splits off into 2 directions.
Asked by Anonymous on April 14th, 2020.
If you were installing this on a x2 8Ohm speaker cab, absolutely no soldering would be required. If you are hooking this up to x4 16 Ohm or x4 4 Ohm speakers like shown in the other diagrams, our twisted pairs of speaker connector wires can be quite handy to eliminate the need to solder. https://www.amplifiedparts.com/products/speaker-connectors-twisted-wire-pair
When using both left and right 8ohm stereo jacks back to the same amp with 2 cables. How much is the total ohm load back to the amp? How much are each left and right ohm load per cable?
Asked by Anonymous on May 3rd, 2020.
Different amp models will have different switching mechanisms in them and the answer to your question is dependent on that, not anything that this jack plate is doing. The jack will be 8 Ohms left and 8 Ohms right in stereo.
Complicated question. If you plugged amps into both the right and left 8-ohm speakers, can the mono 4-ohm jack still be used to drive both speakers? Or do I need to physically unplug the right 8-ohm jack? Scenario: I want to use PnP in a 2x12 cabinet with two 100-watt combos in conjunction with an A/B speaker switch on each head. Combo A set to 8-ohms will switch between its internal speakers and the right PnP 8-ohm jack. Combo B, also set to 8-ohms, will switch between the PnP left 8-ohm jack—which is ALSO the mono 4-ohm jack, driving BOTH PnP speakers—and its internal speakers. Any problems with this? Basically, Head A can only drive the right 8-ohm speaker on the PnP, while Head B could drive EITHER its own combo speakers, or only the left PnP speaker, OR both PnP speakers when Combo A is switched away from the PnP. Does PnP work this way? Or does plugging a jack into the right input negate the the mono 4-ohm input driving both speakers? Make sense? Thanks—Jay Erisman, Cincinnati 513-706-8977
Asked by Anonymous on June 13th, 2020.
The jacks are connected internally to a circuit board that makes or breaks connections based on what is plugged in. If you have the right 8 Ohm jack plugged in, the left jack will only operate the left speaker in 8 Ohms. Doing as you suggested and physically unplugging the right jack when wanting to use the 4 Ohm stereo option will work as you are intending.
I have a Bogner 4x12 that I'd like to split into 2 circuits so the upper two speakers are running in Mono from one amplifier and the lower two running in stereo from a power amp to monitor effects from a Helix. Will this do the job or would it be possible to modify with extra switching? Thanks
Asked by Anonymous on July 29th, 2020.
This would only allow two pairs of speakers to be run in mono. It doesn't provide the option for one stereo input and one mono input.
Just wanting to make sure I know what I'm getting into with this before committing.
I have a 4x12 16ohm cab. I'm hoping to use this to convert it into a stereo cab. From my very much layman reading of the documents on this page it seems if wired as stereo, the only option is to run it as stereo (or if you use an open plug you can get 2 speakers in mono).
This won't allow you, for instance, to plug in a 16 ohm mono signal from an amp OR the 2 8 ohm stereo without changing some wires internally. (Note the OR, I'm not meaning plugging in stereo and mono at the same time.) If I want 16 ohm mono, I need to wire it as 16 ohm mono, if I want 8 ohm stereo, it needs to be wired as 8 ohm stereo (or 2 speaker 8 ohm mono), correct?
Thanks for the response.
Asked by Anonymous on August 13th, 2020.
The two different hook up drawings for speaker cabs with four speakers are for two different Ohm ratings. If your cab has 16 Ohm speakers in it, you will want to follow that drawing and vice versa if they are 4 Ohms. Once the speakers are hooked up, simply using the different jack (as you stated, 16 Ohm mono should not be used in conjunction with the stereo 8 Ohm jacks) will do all the switching internally. If you want 16 Ohm mono, simply plug into that jack. If you want to hook up two heads and run two speakers through each? Plug each head into one of the 8 Ohm stereo jacks, and the Plug and Play takes care of the rest.
I’m planning on putting these into a 2x12 with two 8 ohm speakers. Gonna be using a orange micro dark with it. Is there any way to make a attenuator running between this and the speakers ?? I mean an attenuator inside the cab... do you guys have some products to make that ??
Asked by Markb on November 16th, 2020.
An attenuator works by converting the energy normally sent to the speakers into heat, and because of this, we would not suggest keeping an attenuator inside of a cabinet.
Is it possible to omit the stereo wiring, and just use the jack to go between 4 ohm mono and 16 ohm mono? Thanks!
Asked by Anonymous on December 7th, 2020.
The stereo capability will be there regardless, but you are not required to use it that way. If you only plan to use this to switch between a 4 Ohm and a 16 Ohm mono load, it will certainly perform that function.
How is the PCB(?) mounted to the jack plate? Is it held on by the nuts on the jacks? Could I remove it and attach it to a a different jack plate? The jack plate provided is too big and I don't want to modify the back of my cab. Thank you!
Asked by Anonymous on January 28th, 2021.
The hex nuts on the jacks are what secure the PCB to the jack plate, yes.
I am interested in getting this to rewire my 4x12 cab, but I have a question regarding wiring... The whole point in buying this is because I want to use and have it wired exactly as a Marshall 1960 4X12 cabinet, as I am going to be running 2 heads into the cab at 8 ohms per side. But I also want to be able to use the cab in either 4 or 16 ohm mono... how is this getting wired to a 4x12 with 4 16 ohm speakers???
Asked by Anonymous on February 28th, 2021.
If you use the 4 16Ω speaker hookup chart in the "Speaker Z Diagram" this jack plate will work as you are suggesting.
If I wired an 4x12 cabinet with 8 ohm speakers in parallel each side, would I have 4 ohms stereo, 2 ohms mono, 8 ohms mono? Thanks.
Asked by Anonymous on May 3rd, 2021.
Yes, those would be accurate labels if using four 8Ω speakers.