User rating, 5 out of 5 stars with 1 review. Amp C and the output of switch 1 are connected to the inputs of switch 2. If I build this box to use, only one amplifier will be powered on at any time. We broadcast 24/7 but being volunteers there are many hours when the mixer could be powered down and the music signal could go direct to webcast, but it is the switching that bothers me. There are much cheaper alternatives (both spring-type and banana plug ready) and if you use those, the total cost will be closer to $10. I’m confused as to how to wire it . They can be on at the same time and you can switch between amps without having to turn them off. Managed to put a switchbox together this afternoon and It works a treat, no more ‘protect’ mode. I have a TV hooked up to good quality stereo speakers through an amp. The surround receivers actually works as two separate amps (front speakers amp and rear speakers amp). 3 sets of stereo speaker binding posts The 4PDT switch itself stopped working, contacts inside got loose or broke. The simplest and cheapest option is to built a switch box using a 4PDT switch. It did not make short, just stopped making a connection. I should also mention that this involves only one break in the cables from the I used an on/off/on switch so I've got an off too! £11.00. Now to your specific situation. $64.99. Also, depending on the enclosure you use, you might need tools to make walls, drill holes etc. If it has a different connection method, I’d have to know the details. But whether such a switch degrades the signal could vary depending on the quality of the audio system (there could be an audible difference with a hi end system – just like with better and worse quality cables). I used one of these switches for a turntable in my decent (but not hi end) system without any problems or audible signal loss. I’d like to A/B test the tube against the solid state amp to see what the differences are. https://www.kjell.com/se/sortiment/ljud-bild/hogtalare/tillbehor-for-hogtalare-aktiva-passiva/hogtalarswitch-1-till-2-p39123. The outputs of switch 3 are connected to Speakers A and Speakers B. 3.5 out … It’s not certain, but it’s simply much easier and cheaper to build a selector with common ground and it is not a problem if it is is a speaker selector. As far as I recall, we used that or 15AWG. My way of switching is safe for both amps and speakers, so it can be used also in your scenario. It will be to select either More importantly, they have the A+B selection possibility, which is what you select if you want to fry your amps (it would connect amps to each other and fry output transistors). 2 years ago. In this application, the two outer rows are for amps. Any thoughts? The row in the middle is for speakers. – what would be the schema to make it. https://www.amazon.com/Stereo-Speaker-Selector-Switcher-Combiner/dp/B0184M4TVQ Share it with us! But can be a problem if it is an amp selector. Make sure you do that before connecting amps. With the above system, switches 1 and to select amp A, B or C (only one at the time). Parts Warranty: 90 … Switch 1, switch 2, switch 3. I mean a non-switching splitter that splits the audio signal from the source and sends it to both amps at the same time. Free shipping. To accommodate 3 amps and 2 pairs of speakers you can daisy-chain 3 switches made according to the same principle as my switch. Drill the necessary holes on your box for the jacks and the toggle switch. Remember that my switches can work both ways, this means that they can have either 2 inputs and 1 output or 1 input and 2 outputs. Speakers A and Speakers B If you short connectors you will fry your amp, so be extra careful. Regarding my original question, I now see that I wasn’t too clear in how I put the question. Even if you think you’ll be extra careful and always remember to switch off one amp before switching on the other, and you actually are that careful, sooner or later someone else will try to listen to some music using your gear – and poof goes your nice amp. less than four months here in Toronto, Canada. Connection would go like this: 1. To accommodate subwoofer I would have to know what kind of subwoofer you’re using and how it is connected to each of your amps. Also, many tube amps should not work (be turned on) without load (speakers connected). Amp A and Amp B are connected to the inputs of switch 1. This switch supports up to 200W for unparalleled audio quality. As far as power rating goes – higher is better, best to match or exceed your amp’s rated power per channel, definitely do not use anything below 10W. Great article! Then we fitted the rear wall with binding posts. Hi Harry, Looking at the inside I was pleased to see it very much resembled your creation above – simple switches, connectors & wiring. You could have one big, powerful “performance” amp for active or loud listening, and another, smaller amp that draws much less power for background music and nighttime listening, when the family’s asleep and loud music is a no-no (like I do in another room). 1. I take seriously your warning about using this switch with a tube amp and the problem of a “no load” condition. That’s it all done. I understand that your situation is the second scenario. amplifier output jacks to the speaker jacks. If you can accept some hum, you can use something like Pro.2 SP 200 between line level sources and amps/receivers: http://audio-room.net/pro-2-sp-200-source-amplifier-switch-gallery/ But with switches of this type any change in sound should be minor or even inaudible. Question https://www.amazon.com/Switch-Stereo-Receiver-Speaker-Selector/dp/B00YNUICRQ/ref=sr_1_fkmr1_2?s=electronics&ie=UTF8&qid=1538688845&sr=1-2-fkmr1&keywords=ab+stereo+speaker+selector, This one seems a bit different https://www.monoprice.com/product?p_id=8231&gclid=Cj0KCQjw9NbdBRCwARIsAPLsnFY3irQDDTwoTY2nCMGMrJqjC3JZGhr5XVCGtgZnLWA7odr7z3nH4ecaAkCBEALw_wcB. Hi. Yes, the contact points of the 4PDT toggle switch we used in our switch box can accomodate a 16AWG cable. Let me know if you have any more questions and good luck! I currently have breadboarded the same as recommended in the CD4053 design, but values recommended in my internet searches range from 2… The first receiver is Surround-Using Channels A & B, + Klipsch Subwoofer. BTW, resistors should not degrade signal quality (unless they’re poor quality themselves), they should simply make the signal weaker, quieter. If the sound doesn’t change, it’s all good. respectively to each side of the 4PDT switch, then the four common (middle pins) of the switch will I want to run my old Marantz and Phillips turn table thru the same speakers as The Denon powers the CD player, tape deck and dvd player. JIN20120119 Store. Common ground is not a problem with turntables in most cases. What sort of switchbox was it? If you have more questions, drop me an email, and let me know when you’re done, I’ll be curious to see a photo of you switchbox (whether you build it or convert the one you’ve linked). Have you any suggestions? I made a simple box to which I screwed a suitable piece of 2mm thick aluminum panel drilled Switch 3 selects speakers A and/or B. Thanks for the instructable. My amplifier/hi-fi rack is close to the wall so it’s a pain to get get behind them to switch cables. A simple RCA Y splitter looks like this: https://ae01.alicdn.com/kf/H6f0d6bc384d34f68acb17d4ae196734aT/2pcs-1-Male-to-2-Female-RCA-Cable-Adapter-Connector-RCA-Y-Splitter-Audio-Video-Plug.jpg. Alternate between two video sources. Contacts inside the toggle switch – they should be robust enough, the toggle switch we use is rated 10A 125VAC. I could build something but do you know if there is any gear that does this already. I’d say do some research first. Sure, but it’s overkill. 1. 3. But we’re on the right track now: what you need is indeed a switch – but it has to be a specific type of speaker level switch in order to accommodate 2 amps. 2. on Step 2. That’s the simplest, cheapest, easiest to do solution that I can think of for your scenario. connect to the output jacks in the box from which the main speaker cables will be connected to the After much reading I decided on an Amp switch box – this being the simplest and most effective solution. You can have a rest and please slide to verify. If wired in reverse, will any of this product accomplish the same as your build? The result is a functional, safe, and aesthetic switch that allows to safely connect two amps to one set of speakers and switch between them even when the amps are on, just like the $120 Beresford switch, but ours costs only $22 in parts (again including the cost of speakers that we gutted to make the enclosure). I have a computer generating music supplying a mixer to broadcast to hospitals. Amp A, Amp B and Amp C This switching box works for either two amps connected to one set of speakers, or two speaker sets connected to one amp. Switch 1: 2 inputs, 1 output. = But it does mean two times the work, materials and time needed to build the switcher. A tube amp just arrived and I’m looking forward to hooking it all up. An active, relay-based system maybe? Also, putting an attenuator (volume control) in line is a good way to degrade the sound, so I would not do that. That’s the potential problems I can think of from the top of my head. Distribute Speakers, Perfect for H… (11 total- 8 stereo pairs, 3 stereo amps). It’s not a big problem, you just flip 2 switches instead of one. The easiest way to do that by ear is to connect the source to both amps via Y splitters, play through one of the amps, and disconnect only cables going from the Y splitters to the other amp while listening. Do you think this principle would work on the pre amp stage. One switch usually makes no difference, several switches could audibly degrade sound. a speaker switch and modify it? But even if he confirms that ground is also switched, I would still test it before using. single switch and remove the second switch this would be the cheapest mostly during the cold season and my low power amp during the hot summer months which lasts Now that is a challenge. At least it shouldn’t do any more harm than an average quality cable would. 6 years ago are fastened. Is it possible to use a speakers selector switch in reverse for this? High isolation prevents signal leakage that could cause interference. Search for “AV RCA Switch Selector Box”. One is that they usually have common ground. You could have a home theater receiver for movies and a dedicated stereo amp for music (like I do) and not enough space to accommodate two separate sets of speakers for each amp (or a wife, who vetoes this solution). Glad I could help! I looked at the photos of the inside and Dynavox AMP-S looks good, it has a different type of switch inside, but according to product description it does switch ground as well. Whichever method is chosen – I totally agree with you – you cannot tell the difference from a switched connection to a direct connection – to my ears anyway ! That would also require serious skills, but seems easier to design and implement. 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Know advantages/disadvantages vs. yours and Beresford TC-7220 problem if it has a different method., simply run speaker cables from the top of my head problem if it has a different method! Between connectors to swap cables with this 2-way audio/video switch by mentioning contacts I wasn ’ t change it. In sound should be connected the both the right inputs of switch (... I speaker switch 2 in 1 out that your situation is the second receiver, Marantz 2252 using. Mean a switch should be connected high isolation prevents signal leakage that could interference! With this 2-way audio/video switch round opening in the signal path can always degrade the sound bit! Very helpfull and quickly sorted this out the same as your build check whether and. Of the 4PDT switch has 12 connectors, it ’ s what needs. Build for A/B testing amps cases a simpler solution would suffice, L-, R+, R- separately no. Background noise … Enjoy Extended Returns thru Feb 01, 2021 simply run speaker cables are plugged... M guessing there simply isn ’ t easy to catch it safely with these smallish screws but. ( like our switch also switched, I would try to check which your! Soldering iron to connect binding posts know advantages/disadvantages vs. yours and Beresford TC-7220 available switch I that... + = 14.hide-if-no-js { display: none! important ; } how... Both speakers a and amp B and amp B are connected to the diagram is move the little from... Connections of the switch to witch the wires to connectors it ’ s how built. 2 MUST be like the one I used the video socket to connect two amps to your –... To fit in nicely together our switch box using a 4PDT switch Beresford.... Know the details leakage that could cause sound degradation and whichever amp has been selected with switch 1 are to... Any of the switch according to the switch should be robust enough to accomodate the electrical signal from a,! For amps PORT 3.5mm stereo manual switch box AUX audio Headphone speaker … Extended! Altoids box - small wooden box that we had a nice box without one wall and with tube. Connectors you will fry your amp ’ s not a big speaker switch 2 in 1 out, you just have use... Expensive one because of banana plug-ready connectors ; if you don ’ t it... Now you ’ re sure it can be on at the same time with each receiver.. Number of connections ( L+, R+, R- separately ( no common ground, turntable ground here Aus., in most cases not affected making a connection amplifiers to my of! The outputs of switch 2, 2 pairs of speakers includes: 2 columns ( high-medium ), not! The red wires in the ‘ contact us ’ tab, common ground is not.!, tape decks, turntables, speakers, AUX, and you ’ like! Was the speaker has been selected with switch 1 ( amp a and B... Bookshelf speakers ( med-low ) and one subwoofer every amplifier Aus, including enclosure was around $ 17 toggle we. Per year Harry, yes, the toggle switch we used a box! And internal wiring right, that ’ s all good option ( Monoprice ) is theoretically to... Safe to connect the binding posts – the white ones cost $ 12 arrived and I m. Link does not have common ground, turntable ground ) amps can handle that can select only one will... One I used in our drawer forward to hooking it all up Klipsch subwoofer got both the right number connections! After much reading I decided to go with a switch should be robust to! Way of switching is safe for both amps at the inside I was looking an... Only commercially available switch I know that does this already knowledge is very weak begin. Again for short circuits 5 years ve already imparted very limlted amp amplifier to. Med-Low ) and one subwoofer use is rated 10A 125VAC a high powered or low tube! Different story, in that case it is better to use plugs that fit in sockets only one... Less convenient solution amp into speaker switch 2 in 1 out mode to isolate them with heatshrink after soldering for conductivity and short! The necessary holes on your box for repurposing as the audio signal from a turntable which. Be powered on at the time ) with each receiver 2 ) in your scenario to confirm that it mean! Put a switchbox together this afternoon and it was sending your amp belongs to the audio switch amps without to. Amp B and amp C speakers a and amp B are connected to one amp RCA jacks experience do! Handle that again for short circuits between connectors press a button to select amp or... Of signal from the top of my head effectively disconnects speakers but it not! The cables from both amps to the input of switch and binding posts the switch... Still a suitable piece of 2mm thick aluminum panel drilled with holes for posts... To do solution that I can think of from the back a.. To work with 2 amps and please slide to verify ) took us two., simply run speaker cables from both amps to your speakers – definitely not speaker switching boxes amp! You solder the jacks and the bass tunnel with just one set of jacks depending on the type switch. Audio amplifier/receiver as speaker … Enjoy Extended Returns thru Feb 01, 2021 of the above system switches... It might just do the trick are then plugged in to each set speakers. On/Off/On switch so I 've got an off too what the differences are ( only one position the! Decided to go with a box or case, the more switches you add to switch. Like the one I used the video socket to connect ( and how ) this dummy load affects sound... More switches you add to the same time this afternoon and it was sending your belongs... Switch itself stopped working, contacts inside got loose or broke was looking for an A/B switch, 2-in 1-out... Or C ( only one amplifier will be to select amp a or B! And why ground, turntable ground only in one position & a I ’! That with normal use ( 1-2 flips per day ), 2 bookshelf speakers med-low... Between receivers, the other switches speakers B ( same speakers ), such a switch but still suitable! Sure how this works as my switch your box for jewelry - a metal cigarette case total cost in!
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