It's crazy bc I've been playing guitar for about 8 years and when I looked at the back of my brand new cab I was like, wtf?! 😂😂 Thanks for this video bud, definitely helped a lot!
Seriously my guy. You just explained this so well. I’ve got the same cab and was risking mixing the wrong ohm output and input. Very helpful. Thank you so much.
Thanks for clarifying this! I have this exact cabinet and was confused when trying to hook up my 4 ohm Fender Bandmaster head instead of my Marshall JCM 900.
I recently bought a Marshall MX412A cab and modified my Marshall MG15 practice amp to have a switched output jack, it was very cheap and easy. Now that little amp sounds incredible, a single 8 in the chassis and 4x12’s plugged into the cab. Night and day difference doesn’t even begin to describe the massive difference in sound quality. The shunted output jack was about $6 and now I can plug this little amp into any cab. Unplug and it defaults back to the built in 8” speaker
I just got a Blackstar cab and there's no mono/stereo switch... Just a pair of connections labelled 16ohms for left and right, and also on one of them is "Mono 8 Ohms". Is something wrong if I don't have a selector switch?
The stereo switch is just an additional feature that let you plug two heads/amps in the same cab. You don’t really need the stereo switch when using a single amp. By the way, as your blackstar cab supports 8ohms, you can either connect your cab to the 8ohm output of the amp of the 16ohm output. I prefer the 8ohm, as more power come out of it, but give it a try on both, see what fits you best. Hope it helped!
EXCELLENT video! Very relevant to amps like VOX PR15 (8 ohms) and the Bugera 212TS (the manual is cryptic and doesn't even discuss 8 ohm input -- only 4 and 16 ohm).
Solid state amps and Tube amps have different output coupling and unless specified by the manufacturer matching perfectly impedance is not necessary but in the case of SS amps may hamper performance.
Finally the ohms questions I had were explained in normal English! Except I still don’t know how to match wattage of amp and wattage of speaker. Thanks for that though!
@@guitaroholic4365 I have the 4x12" Marshall 1960A cabinet so I will set the cabinet to Mono and plug into the 4 ohms side of the cabinet and then plug into the JCM 900 (4500) amp head at the (4) 16 ohm side setting. Not sure why the amp head selector says (4) 16 ohm on the selector switch on the one side. Can I assume they just mean 4ohms?
Ira Sherman in Mono the left is 4ohm and the right is 16ohm. So if you had a 8 ohm head you’d plug into the 16ohm. If you have a 4 ohm head just stay in mono and plug into the left side.
@@guitaroholic4365 Yes sir, looking from the back of the JCM 900 amp head, I switched the selector to the left where it says (4) 16 ohms. Not sure why the (4) is in parenthesis and why they are even showing 16 ohms. Then I plugged into the leftside 4 ohms of my Marshall 1060A 4x12"speaker cabinet and set the switch to mono. The right side of my amp head says 8 ohms and the rightside of my cabinet says 16 ohms for mono. Not really sure of the difference. I am no brainiac when it comes to techo stuff or ohms or wattage or impedance. I I can play a pretty good guitar though! LOL Have a nice day Guitaroholic! :) I'll just keep it all on the left at 4ohms! :)
Ira Sherman I just looked up the manual for your Marshall head and looked at pictures of the back panel. That head is rated for 8 or 16 ohms. The proper way to hook it up with a single cabinet (with a speaker cable NOT an instrument cable) would be to select the 16 ohm on the head and put the cabinet selector in mono and plug into the 16 ohm side (right side). Do all this before powering up the amp. Looking at the manual I am with you, I don’t understand why they have the (4).
The only option you have here (because you only have one 8 ohm output on the back of your amp) is to select mono and run into the 16 ohm input of the cab. That's not too bad! But I learned this from McKnight and other sources of my studies over the years. I finally know exactly what's going on thanks to McKnight and you Guitaroholic. Thnx guys, I really appreciate this !
Actually I’ve switched to stereo and ran the cab as a 2X12. This allows me to hear the amp in true form at peak performance. The amp in this video is only 25watt. But it’s a little beast!
Thanks for doing this video. It is very informative. It is a very confusing topic. I still have a dilemma. . My head says 1 x 16 ohm or 2 x 16 ohm? if I have a cab that has a 4 ohm input and a 16 ohm input obviously I plug into the 16 ohm input. But which output do I use from my head. does it equate to 1 x 16 as in 1 16 ohm speaker ? Does 2 x 16 mean a cab with 2 speakers at 16 ohms.
Thanks a ton, I've got a 1960A and a MA50H amp, it got a little confusing back there. The head has two outputs marked 1X8 or 2 X16, there is another marked 1X16. I have the same cab you do in the video so I suppose 16 - 16 Ohm mono it is. I appreciate the help. Short and to the point!
I have an Orange Terror BT1000 bass amp and an Ampeg 8x10 cabinet. The amp and the cab both have 2 spots for speaker cables. So I have to have both plugged in (parallel) to use the full strength of my cab? Also the Ohms DO match up.
Good video , ive never owned one but always wondered at gigs when borrowing, now id like to add 1 to my 4x12 .it should have up and down arrows or a half way line to be clearer about which number refers to what .i also find the term ''stereo' a bit misleading,maybe ''half power '' makes more sense , i suppose if you used both sides indepedently like 2 guitarists sharing the cab it would be stereo ... i didnt know the ''up a step but not down'' rule ,thanks !! A very deceptive contraption....
I have a marshall valve State 150 watt head and I'm hooking it up to my 412 1968 cabinet so that 16 ohms into the 8 ohm output that should work fine now that I've watched this video
What a great video. Please can I ask a question. If you have 1 amp head saying 8 16 ohms on the back and you want to run 2 cabinets from this (2 times 1x12 cabinets). What does a person do? Both 1x12 speaker cabinets are impedance 8 Ohms. Thanks
Unless I'm wrong (whis is entirely possible) I belive that not having enough resistance can damage the speaker, which can then lead to damage of the amp when using a tube power amp, an amp with a a transistor power stage like yours should not take any damage. Though if anyone can correct me, please do
Only if the ohm reading is less than advertised, then the coil is shorted out and will eat up a tube amp pretty quickly. There are many speakers with different ohm ratings from 1ohm to 16+ohms.
@Guitaroholic n00b player here - This was a question I have as I search for amps/cabs. _Thanks for posting!_ 2 questions: 1. If my head is 8 ohms with 2 speaker outputs, can I use both outputs into both 8ohm inputs? 2. The speaker cables have to match the head or cab ohm capacity or just head?
iDisOrder not sure what Head you’re running so I’ll answer your first question to the best of my ability. 1. If you have two 8 ohm outputs on the head that would be so you could run two cabinets (full stack). One output and cable to the top speaker cabinet and one output and cable to the bottom cabinet. If you’re only running one cabinet then just run out of one output. 2. A speaker cable is a speaker cable. Doesn’t matter the ohms you’re running. Just don’t use a guitar cable. I hope this helps. That’s for the question and checking out my video. Good luck.
@@guitaroholic4365 Thanks for the quick reply. I haven't chosen anything yet. As I write this, I have 23 tabs open researching head cab combos. Not sure if I should go SS or tube, combo or separate. On my Guitar Center list now is: B-52 LG100A $79 head with any of these undecided cabs - Lg412a ($79) - ATX412A ($119) Fender FM100H ($119) Head with FM412 cab ($149) or just buy this one locally - Fender Ultimate Chorus PR 204 for $150 _why does everything have to be so complicated?_
Really it comes down to what sounds good to you. There are excellent SS and tube heads in a verity of prices. What kind of music are you playing? Are you in a band or just playing at home?
@@guitaroholic4365 I'm a 50 year old recently retired Teamster. My chances of being in a band at this point are the same as Willie Nelson giving up weed. I'm looking to learn guitar to cure cabin fever is all. I appreciate the advice about what sounds good to me. I'm reading that same advice on every forum. I just picked up a cheap HSS Squire Affinity to practice on so I think the Fender Ultimate Chorus PR 204 for $150 would compliment it best. I just emailed the person selling it. I think I'll start with that and see where it goes before I traumatize my wife with a full stack that's sure to get me sleeping on the sofa. Thanks so much for the video, it'll help when I decide to upgrade and thanks so much for spending your time replying to my questions. _You gained a new subscriber!_ Edit: don't let the Willie Nelson reference fool ya, I've broken many a bone in mosh pits across Brooklyn in my youth
Marshall DSL100HR 100-watt Tube Head there are 4 speaker outputs , my amp tech instructs me to hook up the 4 x12 8 0hm and 2 x12 8 ohm cabs into the last two inputs on the right side at 1x4 ohm or 2 x 8 ohm is that correct ? This head is very confusing to use btw
I have a brand new dsl 20 with a with a brand new 2x12 cabinet.i can't get anything i did try a instrument cable the first couple minutes and that was it until I got the correct cable and nothing I do plug it into a extension cable with a power surge protector and it has other things plugged in does that effect it.?????? this is my first tube amp and it is giving a headache.i need help.
I have only two 4ohm outputs on the the 75 watt head if the 4-12 cab has a left and a right 8 ohms but say 4omh mono left only do i plug the spaker cable to the left output of the amp or dose it matter on a solid state amp.
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Hi I am beginer with these things and I got good price for this amp so I want to buy a Marshall MG 100 HDFX (min. output 4 ohms, 100w head) and want to conect it to an 2x 12 8 ohms 100w cabinet will it work good ?
Correct. I actually have the joyo zombie and it does say “min 8 ohm” which means you can use 8 or 16 ohm. Do NOT use 4 ohm cab tho. Note that if you do end up using a 16 ohm cabinet then it will decrease the power of the head a little bit. The wattage specifically. Nothing to worry about but it will decrease the volume a tad. Not a lot though. Most 2x12 cab are all 8 ohm mono anyway. 16 is usually a 4x12
i allmost fucked up, tnx man for this video...i almost got a 1+2 plug cable and connected the 1 to my amp 2 other plugs simuntainiously :'D now i get it i dont need a duble end cable
I have a JCM 900 and 1960 A 4x12..This is how mine is connected and not sure it's correct, but has been connected like this forever (years) without issues.. My head on the back has a switch and gives me a choice .. Impedance select... (4)16 or 8..? I have mine switched to (4)16. I am gathering that the (4)16 emblem means..4 speakers at 4 ohms each is a total of 16 ohms. OR...could (4)16 mean 4 ohms or 16 ohms ? I dunno On my cabinet..: I have it selected to mono..and I am plugged into the 4 ohms. I do have a choice to be plugged into the 16..but I am not. I am plugged into the 4 on back of cabinet. Never had a problem this way..but I do wonder if I should be plugged into the 16 on the cabinet instead... Maybe I have only been using one speaker out of the 4 provided..LOL To me, it just simply would have been simpler to have it..8 to 8, or 16 to 16...and be done with it.. Then have the choice for stereo or mono...! Anyhow, good luck with Marshall manual folks. Downloaded it and it has NOTHING whatsoever on connecting anything to anything to anything..
my cab looks the same on the back. I have a Marshall DSL 100H with 4, 8 and 16 ohms. So it doesnt matter if i plug into 16 on the cab if i go from 16 on my head, or 8 on cab and 8 from the head? Or should i just go from 8 out of the head into 16 on the cab to go one step up?
I would assume in this example using the equipment in the video, that if your 8ohm *amp head* had 2 speaker outputs, you could plug cables into each 8ohm cabinet input in the *stereo position*. This would activate both left & right, upper & lower speakers. Someone correct me if I'm wrong 'cause I'm here learning as well
I have a marshall dsl100h half stack, and I want to hook up 2 bottom cabs making a tri-stack (a,b,c),....is this possible? the head has a 16 ohm output and 2, 8 ohm outputs. ....can this be done without damaging the 100w head?
Q: I have a JCM800 Lead Series amp with two speaker outputs on the back. Currently the amp is set to 16 ohms. I run one cable to the 16 ohm jack on my 1960BV 4x12 Marshall cabinet set to mono. If I want to operate the speaker cabinet in stereo can I change the amp to 8 ohms and use BOTH speaker out jacks on the amp and run to the Left and Right 8 ohm jacks on the cabinet OR am I supposed to have two amp heads to run in stereo mode?
howard taylor you could run both that way but I’m not sure why you’d want to. The reason for the 2 loudspeaker outputs would be for hooking up a full stack. Each output would run to its own 4x12 cabinet. 🤘🏻🤘🏻
I have a fender mustang V stereo 412 cab and a tiny terror that has 2 8ohms outputs (yes 2 jacks outputs of 8ohms) my cab has 2 inputs si de it’s stereo both are 8ohms for and 4ohm (either side for mono) can I send 2 speaker cables from my amp 2 8ohms output to each 8ohm input on my cab? Can I use the two jacks on a same cab? I’m confused by this layout of my amp/cab 😅
orangeamps.com/wp-content/uploads/2016/04/Tiny-Terror-Manual-V16.pdf Here is a link to the manual for your amp. Go to page 3 and read the instructions for the rear panel outputs. This should clarify why you have 2 separate 8 ohm outputs and how to use them.
@@guitaroholic4365 thank you so much you just saved a Tiny terror amp! I did it and nothing happened but I assume that at anytime something would happened. I’m glad I only did it for 5-10 mins this afternoon and waited for a reply here. Much appreciated I’m new to ohms, tuve Amps and cabs.
What is the purpose of having stereo set up on a single cab? I have a blackstar HT (or whatever) 2x12 and two orange micro terrors, one standard with 8 ohms and one dark at 16. Would I be able to run them both into the same cab using the stereo setting?
Gitarzan 66 I’ve been trying to find the Marshall manual for that head but if I’m not mistaken the dual out put on your head would be for running a full stack. One output would run to a top cabinet and the second output would run to a bottom cabinet.
@@guitaroholic4365 Thanks for looking. I do have the manual and you're right. Thats what the outputs do. No biggie I was just curious about that. Thanks for the help.
Okay great, so how do you daisy chain two of those speakers using all 8 Speakers and your amp has a ohm switch? I want to push out 4ohms out my amp? Then what??
Dude. Thank you for this but I'm still confused about the inputs outputs. 1. If I have Mono/Stereo Amp Head, can I either plug it in Stereo and Mono ? 2. 8 Ohms -> 4 Ohms ( wrong ) 8 Ohms -> 8 Ohms ( okay ) 8 Ohms -> 16 Ohms ( okay but speaker cabinets performance reduces )
Akkun 橙黒 If you have a mono/stereo amp then it can be plugged in either way. A Stereo amp like a Line 6 runs 2 speaker cables out the back and into both inputs in the cabinet. Just need to make sure the switch on the cabinet is set to stereo. On this cabinet in stereo it’s 8 ohms per input. If you are running mono it will be a single speaker cable running to the cabinet. Select mono on the cabinet. You have 2 choices. 4 ohm or 16 ohm. You need to know what ohm output your amp is. 4, 8 or 16? 4ohm amp/ plug into 4ohm input on cabinet. Perfectly matched impedance. 8ohm amp/ plug into 16ohm input on cabinet. You won’t notice much difference in the sound but it won’t be as loud. 16ohm amp/ plug into 16ohm input. Perfectly matched impedance.
does the wattage compatibility matter in the cab and tube head you're buying as long as the cab can handle more than the amp head wattage? Also what do you do when using just 1 cab speaker (a 2x12)? Mono or stereo for one cabinet amp connection and do you change/consider any settings before setting or switching a high gain or low setting on the head?
Answer #1: Yes and No! LOL! Wattage will matter depending on how you plan on hooking up the amp. Is your amp Mono or Stereo? What ohm output is the amp? With a lot of amps I've seen there is a selector switch where you can choose the ohm output on the amp 4, 8, 16. This cabinet can handle 300 watt RMS in mono with the input option of 4ohm or 16ohm or 150 watt in stereo with the only input options being 8ohms. To really sum up your first question it doesn't matter if the amps wattage is lower than the cabinet. For instance I just bought a 20watt/ 8ohm output amp and I'm not concerned about blowing speakers or anything like that. I just need to understand what my options are hooking up. If I want to push my amp perfectly then I want to switch to stereo so my input is 8ohms but I will only be running 2 out of the 4 speakers. Or I can switch the cabinet to mono and plug into the 16ohm input. The only difference I've noticed with the sound is it's not as loud and honestly I can barely tell. Answer #2: As far as a 2x12 cabinet I'm not sure what options you have with it. I'm really only trying to explain this Marshall cabinet but my advise would be look at the back input. It should say something and if it doesn't then look online and try to find a user manual. Answer #3: My understanding of high and low gain inputs on amps have to do with pickups (active or passive). I've watched videos where pro players don't pay any attention to which input they are plugging into on those types of amps. It's not going to hurt anything. Plug into either one and experiment for yourself which sounds better with the pickups you have in your guitar. I hope I answered your questions! This stuff can get kind of confusing so if I didn't get all of your questions answered check out some other videos on here. There are a lot of good ones that may answer your questions and much more. It did for me. Thanks for checking out my video.
Wichy Cruz I would say yes. Looking at the theory of how this stereo switch works, yes. I’ve wondered the same thing. I was going to get another JOYO amp and have them both hooked up that way and see if me and a buddy could jam for fun through different heads run through the same speaker cab. Please note I’m no professional. I’m just stating in theory I don’t see why it wouldn’t work.
So my Randall speaker has, Impedance: 8Ω Parallel Mono/16Ω Stereo. My Randall top says min 4Ω. I should be OK then? My amp can't take any damage right?
Not if you don't crank the volume. Several times I have turned on my tube amps with no speaker load attached and let them warm up for five min., then switched off standby to play and heard nothing. Walking, looking behind the amp revealed I had forgot to connect any speakers! I just put the amp back on standby, then plugged in the appropriate speaker to match the ohms output and the amps were fine, I have done this several times. I am always changing what speaker goes to what amp and sometimes I turn on an amp with no speakers attached. I think if you dial up a lot of power with no speaker load and leave it like that for a long while, then yes you shall cause damage.
PLEASE HELP 😩 !!! Can I connect my Marshall code 100watt combo amp that only has one cab output at 8ohms to my line6 4x12 cab with two inputs that look like this ... (Back Of Cabinet) 8ohmsRight---STEREO---8ohmsLeft 🔘 🔘 4ohms mono (Use this Jack only) So is there anyway possible for me to plug my 100watt code combo amp with only the one 8ohm output to this cabinet that has a left and right input ??? Can I only plug it into the 8ohmRight ??? Or use a “Y splitter” and plug into both left and right ??? PLEASE HELP !!! I am truly lost and need help as a family man ( The Wife says ) I just can’t buy equipment whenever I would like to plus she will be kicking my can or atleast make me feel like a jerk for doing so lol ... thanks ... GOD BLESS !!!
8 ohms per side if run in stereo (2 cables). It's only 4 ohms if you only plug into the left side (mono). Since your head has 1x8 ohm output, it would not be wise to use this cabinet, you might burn your head. Buy a mono 8 amp cabinet.
YES!!! With this cabinet you can select stereo and you now have 2 - 150watt, 8ohm inputs. It's ironic because I was just thinking about this last night. I wanna buy another JOYO 20watt amp and jam with a buddy through the cabinet together at the same time.
Guitaroholic that’s great, thank you, I’m currently using a 50 watt Laney combo for my “wet” sound (which weighs a tonne) and an Orange Dual terror into a 1x12 cab for my “dry” sound. I’ve just bought a 2x12 vertical Marshall that I’ll get wired so I can run the dual terror through one speaker and I’ll pick up another small lunchbox head to run the wet sound through and do away with the Laney!
You mean 'outputs' ? The cabinet has the 'inputs'. Your amplifier has to 'push' power into a resistance (as in, the speaker coil) , for it to work efficiently. No resistance would allow too much current to be drawn from the amp output and would eventually fry the electronics. An amp's output is designed to push into a MIN resistance ( as in, 4ohms, or 8ohms or 16ohms etc) so as long as the overall cabinet ohms or single speaker ohms resistance is the same as or above the min ohms shown on the amp's output jack, then the amp will work ok. Do not plug into a cabinet or speaker with less than the designed amp outlet ohms figure. This is only for solid state amps as ohms matching is more precise on tube amps.
Didit Saad; Yes that is fine. That is how I’m hooked up to the cabinet when I did the demo on the little amp you see in the video. Thanks for watching.
!!!!! with a 8 ohm solid state amp you can plug into 16 , BUT (NOT with a tube/valve amp !!!!) an 8 ohm tube/valve amp should be plugged into the 4 ohm and not pushed to its limit to make up for lack of resistance , when in 16 ohm it has to work to hard against resistance and can blow capacitors or output transformer.
When it comes to Tube Amplifiers, you have it bassackwards bassax7045. It's too little resistance that destroys tube amplifiers! Also if you have a tube amp that says "Min. 8 ohms" that means at least 8 ohms. Get it? When it states "8 Ohms Min". that means 'at least 8 ohms' and not less than 8 ohms. But the ohms could be more as in it could also work at 16 ohms (but at half power 1/2 the wattage). People like you by providing false, misleading comments are one of the dangers of learning from RU-vid. With respect to the relationship between ohms and watts for a fast easy example have a look at the new Vox Nanotube AC50 heads, every time you double the ohms the the wattage is halved. So at 4 ohms the output wattage is 50 watts. At 8 ohms the wattage output is 25 watts, and at 16 ohms the output is 12.5 watts. Better yet consult/purchase an amplifier handbook and or a speaker handbook.
