Guitar cab wiring diagram

Guitar cab wiring diagram DEFAULT

How to properly wire a 4x12 speaker cabinet

How to properly wire a 4x12 speaker cabinet

So, this week I received an email from Scott, a WGS aficionado who was inquiring as to how he should wire his Marshall-style cabinet.  To be honest, I hadn’t given that one any thought in a couple of decades, and it made me think.  In essence, there are two ways to wire up a 4 speaker cabinet that both wind up with the cabinet having the same impedance as any one of the individual drivers, or in other words, a cabinet with four 8-ohm speakers that ends up with a total cabinet impedance of 8-ohms.

The two main methods of arriving at this means are as follows:

 

Okay, so let’s talk about the difference between the two.

Here is my reply to Scott, which I will … until proven wrong … stick by:

I opened up a couple of my vintage Marshall cabs (a and a ), and both are wired "series/parallel".  I really like these cabs, and so I think I’d go with that.  Plus, if you do it in the "parallel/series" style and one speaker fails with a full open voice coil, all four speakers will be down, and your amp will see a no-load impedance.  I know this is unlikely with your ultra low-power amp, but I’d still term it a "consideration".

Scott replied that a fellow by the name of Jim at an amp shop in his area felt as though "the parallel-series method provides a darker tone".  Hummm I had not heard that before, and I have not been able to substantiate it.  So, I’ll stick by my suggestion to go with the "vintage" Marshall series-parallel wiring method when wiring a 4-speaker cabinet.   However, I am always ready to hear another point of view.  If you have any experience or input in this, email me, and I’ll be sure to share the information on this blog! Oh, and as for the modern Marshall mono-stereo switch, well, let’s just say no to that little bit of absurdity (please)!

Until next week    -Vaughn-

**UPDATE**: Scott has just checked in; he tried the wiring both ways, and could discern no difference in tone - that's kinda what I would have suspected.  He went with the series-parallel method for the reasons I described above.  Here is a pic of the wiring in his Marshall cab, with the new WGS Green Berets installed.  Looks like a good clean wiring job!

email vaughn

About Vaughn

Sours: https://wgsusa.com/how-properly-wire-4xspeaker-cabinet

Celestion Loudspeakers

Replacing a speaker or speakers in your cab can be a really cost-effective way of significantly upgrading your tone. If you&#;re thinking of swapping out speakers yourself, then you&#;ve come to the right place! It needn&#;t be a difficult operation, but it&#;s important to be aware of how the speakers are connected up, as well as some of the implications of wiring up multiple speakers together. Before you get to re-loading your cab.. take a moment to read through the important background information below and get ready to take a step closer to great tone!

Single Speaker

The most basic cabinet configuration is a single speaker.

1 x 8 ohm Speaker = 8 ohm load
1&#;16 ohm speaker = 16 ohm load

Two Speakers

Remember:
1. Match impedances (ohms) &#; all speakers in the same box should have the same impedance.

2. Power handling &#; as a rule of thumb, when mixing speaker types in a two speaker cabinet, maximum power handling is 2 x the lowest rated speaker (e.g. for watt & watt speakers, max power handling = 2&#;watt = watt)

There are two ways you can wire a two speaker cabinet.

 

Series: 2 x 4 Ohm Speaker = 8 Ohm Load;

2 X 8 Ohm Speaker = 16 Ohm Load;

2 X 16 Ohm Speaker = 32 Ohm Load

 

Or, in Parallel: 2 X 4 Ohm Speaker = 2 Ohm Load;

2 X 8 Ohm Speaker = 4 Ohm Load;

2 X 16 Ohm Speaker = 8 Ohm Load

Four Speakers

Remember:
1. Match impedances (ohms) &#; all speakers in the same box should have the same impedance

2. Power handling &#; as a rule of thumb, when mixing speakers in a four speaker cabinet, maximum power is 4 x the lowest rated speaker (e.g. for 2&#;watt & 2&#;watt speakers, max power handling = 4&#;watt = watt)

There are two ways you can wire a 4&#;12 (or 4&#;10 for that matter), the main one is Series/Parallel: 4 X 8 Ohm Speaker = 8 Ohm Load; 4 X 16 Ohm Speaker = 16 Ohm Load

Sours: https://celestion.com/blog/speaker-wiring-configurations/
  1. Alameda county restrictions
  2. 2 door metal lockers
  3. Genucel consumer reviews

Support

Wiring Configuration for 2 Speakers in Parallel Wiring two speakers in parallel

Two 4 ohm speakers = 2 ohm load
Two 8 ohm speakers = 4 ohm load
Two 16 ohm speakers = 8 ohm load

Wiring Configuration for 2 Speakers in SeriesWiring two speakers in series

Two 2 ohm speakers = 4 ohm load
Two 4 ohm speakers = 8 ohm load
Two 8 ohm speakers = 16 ohm load

Wiring Configuration for 4 Speakers in Parallel Wiring four speakers in parallel

Four 8 ohm speakers = 2 ohm load
Four 16 ohm speakers = 4 ohm load
Four 32 ohm speakers = 8 ohm load

Wiring Configuration for 4 Speakers in Series/Parallel Wiring four speakers in series/parallel

Four 4 ohm speakers = 4 ohm load
Four 8 ohm speakers = 8 ohm load
Four 16 ohm speakers = 16 ohm load

Sours: https://www.eminence.com/support/wiring-diagrams/

Wiring a 2 X 12 Speaker cabinet

Shavano Music Online
2/04 - Jens Moller http://www.colomar.com/Shavano/2x12wiring.html
Note: For 4 speaker solutions see: Wiring a 4 X 12 Speaker cabinet

This Web page contains a lot of information that may be new to you. You may need to find someone who is knowledgeable about reading electronic schematics to help understand what some of this information is telling you.


Many people have asked how to wire up a 2 speaker Cabinet that can have an extension speaker cabinet (usually another 2 speaker Cabinet) plugged into it when desired. The most common request I get is for 2 speakers that are 12 inch in diameter (2 X 12), however, this solution pertains to 2 10's, 2 15's or any mix of sizes. Please try to make sure that each speaker is approximately the same SPL (see SPL Discussion for more information on this topic). In this set of wiring diagrams, all speakers in the same cabinet are the same impedance.

Voice Coil Tweeters, if used, may not be the same impedance, it depends on how they are used.

Piezos do not have impedance that affects the other speakers in the cabinet.

For other speaker combinations, please see: Speaker Wiring/Loading Examples and under Speakers - Usage/Wiring on the Construction Web Page.

Connector Choices

Many people install both 1/4 inch phone jacks and Speakons on the same cabinet. This allows you plug your cabinet on no matter which is in use.

1/4 inch phone jacks cannot reliably support more than watts of power. If your cabinet will be used at watts or higher, use Speakon connectors instead.

Which connector is right for you?

Most Guitar and Keyboard amplifiers use 1/4 inch phone jacks for thier Speaker connections.

Some higher powered Bass Guitar amplifiers will use Speakon connectors.

Most Low to Mid power PA systems use 1/4 inch jacks and bananna plugs for thier Speaker connections, some occasionally include Speakons.

Many high powered PA systems only provide Bananna connectors or Speakons

Internal Wire

If your speakers will see watts or less, use 18 or 16 gauge (AWG) wire.

If your speakers will see watts or above, use 16, 14 or 12 gauge (AWG) wire.

Piezos and Voice-Coil tweeters do not use as much power since they are frequency limited. 20 or 18 gauge (AWG) wire is sufficent.

NOTE: Wire is available a hardware stores and auto parts stores. Use stranded copper wire. Solder all internal connections to components.

Cabinet Wiring Options

Wiring Diagram
Usage Information

Mono

2 Musical Intrument Speakers. Hard wired for a single total impedance.

Option 1

2 - 8 ohm speakers = 4 ohms

Option 2

2 - 16 ohm speakers = 8 ohms

Mono

2 Musical Intrument Speakers. Hard wired for a single total impedance.

Option 1

2 - 4 ohm speakers = 8 ohms

Option 2

2 - 8 ohm speakers = 16 ohms

    Note:The power rating of a Piezo should be at least 1/2 of power rating of the regular speakers.

Mono with Piezo Tweeter

2 Musical Intrument Speakers and 1 Piezo. Hard wired for a single total impedance.

Option 1

2 - 8 ohm speakers = 4 ohms

Option 2

2 - 16 ohm speakers = 8 ohms
    Note:The power rating of a voice coil tweeter should be at least 1/4 of power rating of the regular speakers.

    See First Order Cross-overs for other capacitor frequency ranges.

    Note:As long as the voice coil tweeter's cross-over is Hz or above, you do not need a Low Pass inductor for the Woofers.

Mono with Voice Coil Tweeter

2 Musical Intrument Speakers and 1 Voice Coil Tweeter. Hard wired for a single total impedance.

Option 1

2 - 8 ohm speakers = 4 ohms
1 - 4 ohm tweeter, 10 uf capacitor for Hz

Option 2

2 - 16 ohm speakers = 8 ohms
1 - 8 ohm tweeter, 5 uf capacitor for Hz
    Note:The power rating of a Piezo should be at least 1/2 of power rating of the regular speakers.

Mono with Piezo Tweeter

2 Musical Intrument Speakers and 1 Piezo. Hard wired for a single total impedance

Option 1

2 - 4 ohm speakers = 8 ohms

Option 2

2 - 8 ohm speakers = 16 ohms
    Note:The power rating of a voice coil tweeter should be at least 1/4 of power rating of the regular speakers.

    See First Order Cross-overs for other capacitor frequency ranges.

    Note:As long as the voice coil tweeter's cross-over is Hz or above, you do not need a Low Pass inductor for the Woofers.

Mono with Voice Coil Tweeter

2 Musical Intrument Speakers and 1 Voice Coil Tweeter. Hard wired for a single total impedance.

Option 1

2 - 4 ohm speakers = 8 ohms
1 - 8 ohm tweeter, 5 uf capacitor for Hz

Option 2

2 - 8 ohm speakers = 16 ohms
1 - 16 ohm tweeter, uf capacitor for Hz
    Mouser Electronics Sells 1/4 inch phone jacks that have a built in DPDT switch. - Marshall used this type of Jack/Switch to automatically set the speaker selection mode. They are expensive and prone to failure over time, however, using them often simplifies set-up of your rig. If you decide to use these, it is reccomended that you use a seperate Jack for each impedance and that the switch function depends on which jack you plug into.

Mono, Switchable Impedance

2 Musical Intrument Speakers. Impedance selectable between 4 and 16 ohms by using a switch.

2 - 8 ohm speakers = 4 or 16 ohms depending on which way the switch is set

No other impedance speaker is reccomended for this configuration.

WARNING: Do not flip the switch while the power amp is powered up

    Mouser Electronics Sells 1/4 inch phone jacks that have a built in DPDT switch. - Marshall used this type of Jack/Switch to automatically set the speaker selection mode. They are expensive and prone to failure over time, however, using them often simplifies set-up of your rig. If you decide to use these, it is reccomended that you use a seperate Jack for each impedance and that the switch function depends on which jack you plug into.

    A Piezo is not dependant on impedance in the ranges that we are operating at. Because of this, as single Piezo can be used for both impedance settings.

    Note:The power rating of a Piezo should be at least 1/2 of power rating of the regular speakers.

Mono, Switchable Impedance with Piezo

2 Musical Intrument Speakers. Impedance selectable between 4 and 16 ohms by using a switch.

2 - 8 ohm speakers = 4 or 16 ohms depending on which way the switch is set

No other impedance speaker is reccomended for this configuration.

WARNING: Do not flip the switch while the power amp is powered up

    Mouser Electronics Sells 1/4 inch phone jacks that have a built in DPDT switch. - Marshall used this type of Jack/Switch to automatically set the speaker selection mode. They are expensive and prone to failure over time, however, using them often simplifies set-up of your rig. If you decide to use these, it is reccomended that you use a seperate Jack for each impedance and that the switch function depends on which jack you plug into.

    Note:The power rating of a voice coil tweeter should be at least 1/4 of power rating of the regular speakers.

    See First Order Cross-overs for other capacitor frequency ranges.

    Note:As long as the voice coil tweeter's cross-over is Hz or above, you do not need a Low Pass inductor for the Woofers.

    NOTE:You must use a seperate Voice Coil tweeter per Woofer - the Cross-Over capacitor is based on impedance, you cannot switch load impedance without using a different capacitor (the cross-over frequency will move) - If run individually, switching impedances will not alter the cross-over frequency.

Mono, Switchable Impedance with 2 Voice Coil Tweeters

2 Musical Intrument Speakers. Impedance selectable between 4 and 16 ohms by using a switch.

2 - 8 ohm speakers = 4 or 16 ohms depending on which way the switch is set

2 - 8 ohm tweeters, 5 uf capacitor for Hz

No other impedance speaker is reccomended for this configuration.

WARNING: Do not flip the switch while the power amp is powered up

    The Right channel jack is completely disconnected when in Mono Mode. Do Not alter this configuration (you risk doing serious damage to your power amps if wired differently).

    Mouser Electronics Sells 1/4 inch phone jacks that have a built in DPDT switch - the switch contacts are electrically isolated from the 1/4 inch Jack connection (they have to be in order for you to wire this correctly) - Marshall used this type of Jack/Switch to automatically set the speaker selection mode. They are expensive and prone to failure over time, however, using them often simplifies set-up of your rig. If you decide to use these, the Mono/Stereo switch functionality would be associated with the Right channel, where when nothing is plugged into the Right channel, the cabinet is operating in Mono Mode.

    WARNING: Never run a Tube Type power amp to the Right channel if the switch is set to Mono mode - it will damage the output transformer.

    NOTE: If you want Tweeters or Piezos in this configuration, you will need 2 of them, 1 per Woofer. This is because the speakers can be operated as seperate channels, using 2 completely different power amplifiers. The Tweeters or Piezos will be wired in parallel with the Woofers. The same arrangement as the above Dual Impedance systems.

    WARNING: The Left and Right jacks cannot be mounted on the same metal plate (serious damage to some power amps will occur if you do this). Use a seperate jack plate for each channel, mounted on a non-conductive surface

Mono/Stereo in same cabinet using DPDT switch

2 Musical Intrument Speakers. Selectable between Stereo/Mono by using a switch.

4 ohm impedance speakers are not reccomended for this configuration.

Option 1

2 - 8 ohm speakers = 8 ohms to each channel if run in Stereo, 4 ohms in Mono mode.

Option 2

2 - 16 ohm speakers = 16 ohms to each channel if run in Stereo, 8 ohms in Mono mode.

Option 3

In case you have 2 - 4 ohm speakers, and want mono mode to be 8 ohms. You have to wire the switch differently - link goes to new schematic.

WARNING: Do not flip the switch while power amp(s) is(are) powered up

WARNING: The Left and Right jacks cannot be mounted on the same metal plate (serious damage to some power amps will occur if you do this). Use a seperate jack plate for each channel, mounted on a non-conductive surface

Mono/Stereo in same cabinet using Switchcraft 14B Stereo Jacks

2 Musical Intrument Speakers. Selectable between Stereo/Mono by connecting a cable to the Stereo Jack.

4 ohm impedance speakers are not reccomended for this configuration.

Option 1

2 - 8 ohm speakers = 8 ohms to each channel if run in Stereo, 4 ohms in Mono mode.

Option 2

2 - 16 ohm speakers = 16 ohms to each channel if run in Stereo, 8 ohms in Mono mode.

Personally, I prefer external mounted DPDT switches over the 1/4 inch Jacks that have built in DPDT switches. Part of this is because I use cabinets that have Speakon Connectors as well as 1/4 inch jacks, and there is no way to automate the switching with a Speakon connector. Another reason is that the switched jacks are not that reliable over time. Many of my cabinets are 20 years old and get used frequently - all switches malfunction over time and switched jacks are hard to find if you suddenly need to replace one (buy spares if you decide to use them).

NOTE: For all DPDT switches shown - I suggest 5 Amp (or higher), V rating

Example of translating a DPDT Jack to/from DPDT Switch (Your Switched Jack may be different)

NOTE: The Ring Connection would be left open for all examples shown above

A regular DPDT switch will not include NO and NC markings - this is because either position is its normal state. The Switched jack, however, is a momentary contact switch, as as such, when nothing is plugged into it, the NC positions are what it is set to. When you plug a cable into it, the NO positions are what it is set to. Use this logic to figure out what mode you want the Default switch configuration (ie. when nothing is plugged into the jack) when you wire up the jack to the speakers. The NO and NC markings are on the drawing to give you an better cross-reference perspective.

Be aware that if you use a stereo mode switching jack along with a regular mono phone plug, you have to push the plug in all the way (as you will feel the first detent - about 1/4 of an inch (approx 6 mm) before the jack is plugged in all the way) in order for both the switched connections to end up properly switched.

Note: If you do not know how to read schematic diagrams for switches and jacks, please try to find someone who does, to assist in this effort.

Using 2 cabinets with a Power Amp

Speaker cables:
  • Unshielded, stranded copper wire
  • 18 gauge (AWG) or thicker (the lower the gauge number, the thicker it is)

Cable Connections
Usage Information
Connecting Speakers in Parallel

    Stereo is simply wired up as 2 seperate Mono channels.
If your Power amp can drive a 2 ohm load
  • 2 - 4 ohm cabinets = 2 ohms
  • 1 - 4 ohm and 1 - 8 ohm cabinet = ohms
  • 1 - 4 ohm and 1 - 16 ohm cabinet = ohms
  • 2 - 8 ohm cabinets = 4 ohms
  • 1 - 8 ohm and 1 - 16 ohm cabinet = ohms
  • 2 - 16 ohm cabinets = 8 ohms

If your Power amp can drive a 4 ohm load

  • 2 - 8 ohm cabinets = 4 ohms
  • 1 - 8 ohm and 1 - 16 ohm cabinet =
  • 2 - 16 ohm cabinets = 8 ohms

If your Power amp can drive an 8 ohm load

  • 2 - 16 ohm cabinets = 8 ohms
If your Power amp can drive a 4 ohm load
  • 2 - 2 ohm cabinets = 4 ohms
  • 2 - 4 ohm cabinets = 8 ohms
  • 1 - 4 ohm and 1 - 8 ohm cabinet = 12 ohms
  • 2 - 8 ohm cabinets = 16 ohms
  • 1 - 4 ohm and 1 - 16 ohm cabinet = 20 ohms
  • 2 - 8 ohm cabinets = 16 ohms
  • 2 - 16 ohm cabinets = 32 ohms

If your Power amp can drive an 8 ohm load

  • 2 - 4 ohm cabinets = 8 ohms
  • 1 - 4 ohm and 1 - 8 ohm cabinet = 12 ohms
  • 2 - 8 ohm cabinets = 16 ohms
  • 1 - 4 ohm and 1 - 16 ohm cabinet = 20 ohms
  • 1 - 8 ohm and 1 - 16 ohm cabinet = 24 ohms
  • 2 - 16 ohm cabinets = 32 ohms

If your Power amp can drive a 16 ohm load

  • 2 - 8 ohm cabinets = 16 ohms
  • 1 - 4 ohm and 1 - 16 ohm cabinet = 20 ohms
  • 1 - 8 ohm and 1 - 16 ohm cabinet = 24 ohms
  • 2 - 16 ohm cabinets = 32 ohms
For 1/4 inch (and 1/8 inch) phone jacks, you need to verify which solder tabs go to the + and - connections, 1/4 (and 1/8) inch phone jacks have no standard for which of the solder tabs goes to what. Open cased Jacks are easy to verify - just look at it. In an enclosed Jack, you may need to use a VOM/Digital Multimeter to check which connection goes to what.

The + and - relate to how the speakers are connected. The speaker should have a colored dot on it to indicate + or it will be marked with a +.

Speakons are relatively new to the Audio scene. They were designed to provide a safe and easy to use High Power Speaker/Power Amp connection system. Some models also allow you to connect more than one set of speakers (the most commonly found model, the NL4 series, has 2 sets of connections in it).

The main speakers are typically wired to the 1 connections, and the secondary (if used at all) are connected to the 2 connections. Each set has a + and a -. The + corresponds to the Center Tap (which should be the + connections of the speakers), and the - corresponds to the Signal Ground/Case.

Other models of the Speakons exist that have more or fewer connections than the NL4 series.

NOTE: Steve Dallman writes

Piezo tweeters are seen by the power amp as a capacitor. Some power amps (such as Kustom) can't handle a capacitive load. When that happens, the amp goes into thermal runaway and it can take the amp out.

To remedy this, simply add a resistor in series with the piezo. The resistor can be anywhere from 2 to 20 ohms and I'd suggest using at least 5 watts handling. I generally use an 8 ohm/20watt from Radio Shack.

The resistor will not change the response of the piezo, and it will help protect the piezo from burnout as well.


NOTE: We do not work on Home or Car Audio. We work only with Pro-Audio applications. We cannot help you with Home or Car Audio questions.

Questions? Comments? .

Return to Shavano Music Online Home page

� - Shavano Music Online

Sours: http://www.colomar.com/Shavano/2x12wiring.html

Cab diagram guitar wiring

This page provides links to downloadable wiring diagrams for the various Sound City speaker cabinets you might own. These are admittedly crude examples (I'm no artist), but they are accurate. Also, these diagrams can be used with any cabs that have two or four of any size speaker (10s, 12s, 15s, etc.).

  • Here is a link to a page that describes speaker wiring generically and mathematically (with equations).
  • Here is a link to a Sound City site page that discusses measuring what's called DC resistance (Re), from which you can determine and extrapolate the nominal impedance of a speaker or speaker cabinet, and
  • Here is a link to an impedance calculator that works very well (courtesy of Sadowsky Audio and Sadowsky Guitars, Ltd.).

Please note that all the following linked files are in PDF format, which requires Adobe Acrobat Reader be installed on your computer. (Click here to download a free copy of Adobe Acrobat Reader if you need it.)

spacerPlease Note: The L wiring diagram above shows six ohm speakers, but at least one L cab I've seen has had six 8-ohm speakers; therefore, the same equation shown in the wiring diagram can be used, but the combined DC resistance (Re) would yield a measured ohms; therefore, the cab's nominal impedance would be 8 ohms.spacerPlease Note: As you view the following two wiring diagrams, please realize there is much discussion about what series-parallel wiring looks like versus what parallel-series wiring looks like. I believe this is a semantics issue more than anything because electrically, these two methods are the same. Also, many people feel they can hear differences between the two; I'm not one of these people. So, if my parallel-series wiring diagram looks like someone else's series-parallel diagram, so be it. I think it's just semantics. But I've been wrong before! spacer
  • Wiring Two Cabs in Series
    This wiring scheme can be used for any two cabs as long as A) they each have the same nominal impedance (2, 4, or 8 ohms each) and B) their combined nominal impedance isn't greater than 16 ohms when connected in series.
What's "Parallel-Series-Parallel" you ask?

I know this is a Sound City site, but some bass players might be using their SC heads with these very popular 8x10 Ampeg cabs, which have two sets of four inch speakers in them. If you use one of these cabs, here's a way to rewire each set of four ohm 10s in parallel-series so that when you use the two sets of four 10s together (in mono, i.e., in parallel) your SC amp sees an optimum ohm load.

Hence, my use of the term Parallel-Series-Parallel. For what this might be worth
Sours: http://soundcitysite.com/wire_diags.htm
DIY: How To Install Speakers in a 4x12 Cab, Part 2

Is this porn. But let's really take off the porn, - Julia suddenly perked up. I mean, how. Well, like in erotic magazines, I wonder after all.

You will also like:

And finally, her first orgasm. Katka involuntarily twisted her ass, made some kind of purely girly sound "uuuhhh", and her vagina squeezed her penis several times. I put it on for a while, then took it out.



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