One bizarre effect I remember was that if I rolled down the volume on my guitar, it'd silence his too. Even then it doesn't sound great, but better than any pedal I've tried with these amps - and I have a closet full of pedals.   Your previous content has been restored. Amp A and Amp B are connected to the inputs of switch 1. Two RCA inputs can also be used to sum the L/R stereo outputs in a 2.1application where the customer only wants to use one subwoofer. This is incidentally why some guitar amps that don't have both types of inputs have a "tone cut" switch on them. . Combined, these factors produce far better sound than lesser equipment. As a matter of fact most vintage amps and vintage style amps have two inputs. i have been looking at some higher watt amps like the aq3500 and the dat2500. Nowadays no player would dare plug into input #2 with their buddy occupying the favored input #1. A 4-channel amp should be used for mids and highs. “Absolutely nothin’, sing it again……uh“! Bi-wiring high-end speakers will drastically improve their audio performance. Use the input that sounds good to you, what you need to get you to the breakup/distortion level vs loudness you want. On some amps you can, on others you can't. The 805 is just set up to bi-amp already. Why do you think that Voxes and Marshalls from teh 60s had four inputs? So there you have it. Cheesy stuff. could someone explain the purpose of the dual power and grounds to me please? To confuse guitar players who can't make up their mind. If you have an account, sign in now to post with your account. Back when these vintage archetypes were being produced most every manufacturer incorporated two inputs on each amplifier model. my tre's got a low gain and a high gain input. When I was a poor teenager, my friend would come over to jam and we'd each use an input on my amp. Connection would go like this: 1. Some jazz recordings have the upright bass placed entirely on the left channel while the drums (including the kick drume) are faded to the right channel. I am a one man shop and my hours can vary so please contact me to confirm that I will be open. then you have some older amps.   Pasted as rich text. It is only because the sub HAS those 2 inputs that a Y-adapter CAN happen to be used. Assuming that the stereo has only a pair of RCA outputs and you require to feed 2 amplifiers, the basic procedure would be to split the RCA pair.This could be acieved with the use of a 1 male to double female RCA adapter as shown below. . The jcm800 (and some soldanos and the 5150) use a bypassed tube stage input, which is ALWAYS out of phase with the other input, and using both at the same time makes it sound like {censored}. Switch 1: 2 inputs, 1 output. But nonetheless that’s what the original intent was for. Why Do Quality Speakers Have Two Input Terminals? A true amp is meant to be used with a pre-amp. If you choose this solution, be sure the amp has two instrument inputs. There are some exceptions, but there's a reason a lot of players use a Fender amp for their clean tones and a Marshall when they need to bring the thunder. they just have three instrument inputs. Also as hasserl points out, not all amps are designed this way. Because they were designed for ENTIRE BANDS. That reason is NOT so that a Y-adapter can be used to connect the sub. Some low-noise audio op amps have JFET inputs. Of course I'll have to tell my receiver that I'm bi-amping and it'll make some changes. A discussion of a Y-adapter should have never entered this thread. 1 Executive Dr Unit L Toms River, NJ 08755. On some less expesive models there would be some humming as you turned down as well. I liked chorus on my cleans but I hated the tap dancing involved to turn it off when I went to dirties. / How to jump amp channels. It's so you can use it solely as a headphone amp for an analog device. My HU has three outs- front, rear, and sub. Do a search on jumpering 5E3 channels for more ideas in that area. And a HU with only one set of outputs wouldn't be in my vehicle. Why do some amps have both hi and low inputs ? my jsx has high gain input and a low gain input, i was thinking bag pipes...but accordian is quite nice. This was a question of the day blog post on 12-1-09. It selects between Amp A and Amp B. Two inputs help to improve the … Please feel free to email me if you have any questions or are in need of some tech work. Two HDMI’s in… two common reasons: 1. Ol’ #2 is good for players using a multi-effects board that has a hot signal coming from it as well. Display as a link instead, × The two inputs were supposed to accomodate two players believe it or not! Hi and welcome to JustAnswer, Initially, pls confirm if the stereo has "one set of RCA inputs" or "one set of RCA outputs". It doesn't hurt anything to try. Can i use both at the same time? Why do some car subwoofers have 2 inputs? He sent me an email asking me about input #2 on his reissue Fender Princeton Reverb amp and what it is used for. One jack will have higher gain than the other. One is tighter than the other. Some issues would occur like when one player turned his guitar down it would turn down the other player at the same time. The signal is traveling out of your amp to some other destination, such as a PA system or recording gear. But many of these also have an instrument input available to use on the channel with the XLR (use one or the other). 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. Is it OK to wire them up as outlined above or is there a better way? I feel like an idiot asking this question but a friend of mine has an old Marshall JTM-45 amp with 4 inputs on it. and as far as wiring it up I'm lost about what needs fused if your using multiple batteries and one amp with dual inputs For those of you who have a head/cab rig, the speaker jacks on the back of the head are outputs; they send the amplified signal out to the cabinet. So I used to A/B switch between my chorus pedal going into input 1 and my distortion pedal going into input 2. The OP asked why sub's have dual inputs. Clear editor. Please ship all repairs to: 1 Executive Dr Unit L Toms River, NJ 08755. Not the best situation at all. I am also an Eminence, Mercury Magnetics, Mojo Musical Supply dealer. 300Guitars1 Executive Dr Unit 1L Toms River, NJ 08755. Input #2 can be used for guitars with hot or active pickups. Fast forward about 45 years and there is the basically dormant input #2 which brings me back to the original question…..what is it good for? Sensitivity: 2 ways to do it. Many of the "acoustic" amps have an XLR input for one of the channels so you can use it for guitar and vocal. I have seen that most amps have two inputs. If you were lucky and had an amp with two channels this problem was minimized……..unless one channel had reverb and the other did not which is a whole other “heads or tails I get the reverb channel” situation. « Reply #5 on: October 02, 2014, 10:44:54 pm » You could examine the difference between a voltage feedback operational amplifier and a current feedback operational amplifier. In some amps, the 1 & 2 inputs are simply lo/hi input level running through the same pre-amp circuit varied only by resistance to ground. There are some tub combo amps that have so much headroom that you're unlikely to send them into overdrive, but for the most part, tube amps are geared to break up. These have two 6. How to create a hard link to an inode (ext4)? Attenuate one input, or bypass a tube stage. is it just like less resistance? So, while not commonly needed, I think that the stereo inputs and the outputs have their place for some of us. 5mm cable splitter. Tube amps are classic, and while they vary considerably in tone, they do share some remarkable sonic characteristics. I know this might be the wrong forum but here goes. Joined Mar 30, 2015 12,106. High-quality speakers distinguish themselves in a variety of ways: high-end materials, detailed engineering and precise manufacturing. Why two inputs? Note: Your post will require moderator approval before it will be visible. Just kidding. The two inputs were supposed to accomodate two players believe it or not! This Question of the Day comes from Vlad in Minnesota. That amp is only rated for 100 x 2 @ 4-ohms. The preamp has all the inputs, and the amp powers the speakers. The bass enhancement is the response of more than one input. Any good HU does now days. May 17, 2020 #8 OBW0549 said: As I recall, MOSFETs were not compatible with those fab processes. I have reservations about hooking up the Max4466 and Arduino outputs, in parallel, into the inputs of the TDA2030 amps (to achieve dual inputs) although not sure why. Otherwise, if you have separate amps, you'd so the same thing using 1 channel for the highs and one for the lows. is this true?   Your link has been automatically embedded. Powered by Invision Community. Receivers are basically a pre-amp and an amp combined, and they usually have a tuner. Yeah but the amp has to have 2 active inputs and there are few amps that have 2 active inputs You need a 6. Like Reply. There IS a correct answer to why subs have dual inputs. Yeah but the amp has to have 2 active inputs and there are few amps that have 2 active inputs You need a 6. Adding a Y splitter doubles the drive voltage at the line level inputs. I have seen that most amps have two inputs. . Re: Why do op-amps want their inputs to be the same? dl324. These have two 6. Wrong - the High gain input would be better suited for passive pickups, and the Low gain would be better for actives. They support resolutions beyond the HDMI standard and allow multiple inputs to support a resolution/refresh rate beyond that of standard HDMI. My old Music Man has it's more complicated set on the right with Master Volume, gain, reverb, etc. Back when these vintage archetypes were being produced most every manufacturer incorporated two inputs on each amplifier model. For example, many delay pedals have stereo outputs for “ping-pong” effects, in which repeats bounce back and forth between a pair of speakers. Upload or insert images from URL. When you get sick of the looseness, go for the 2nd input. The two inputs into the subwoofers car are very necessary as it helps to produce the best sound quality and improve bass. Many jazz players like input #2 for the same reason: more headroom which translates into a bit of a cleaner sound. Page 2 of 2 < Prev 1 2. There will be more headroom for the high output. Saturday 10am - 2pm. Usually input #1 has a bit higher gain than input #2 resulting in a louder, hotter sound. This is very effective for jazz players. As a matter of fact most vintage amps and vintage style amps have two inputs. Some modern boutique amps do not have an input #2 to save room and keep things simple. 2. It has four inputs because it is a 4-channel amp. Discussion in 'Amp Input - Normal or Bright' started by ocean, Apr 28, 2018.   You cannot paste images directly. Good allowance savings plan? Is it a tube amp, solid state, or some hybrid of the two. Sometimes you can or cant use them at the same time depending on whether th inputs are in phase. Reactions: absf and OBW0549. Switch 2: 2 inputs… Many players use two amps for stereo techniques that require multiple loudspeakers. danuniversal, April 17, 2008 in Amps. amps typically dont have multiple a/v inputs and dont switch inputs, what you have is probably a reciever, or an integrated amp. channels: the inputs will go different places, ex: fenders, one input will go through normal channel, the other will go through a vibrato or something. I think some people automatically declare input 1 the optimal choice because of the "more is better" philosophy, but I do recommend trying input 2 if you have a loud signal going into the amp from either pedals, pickups, or both. 4 days ago. I hope this answered your question Vlad and that you keep visiting 300guitars! Paste as plain text instead, × Was just reading through posts and didn't understand a few amp references so I've got to ask, why do a lot of amps have the one set of controls and inputs plus another set in the same amp? As with a lot of things we do, our decision to fit digital inputs to our amplifiers does not mean we believe that separate source equipment has fallen by the wayside (we still make these just to prove it!) It just isn't. By I doubt you’re going to invite your BFF over to jam on your Princeton Reverb and make him plug into input #2 but it’s there for high output guitars or pedalboards and for jazz players. . I read that one have lower volume. Usually input #1 has a bit higher gain than input #2 resulting in a louder, hotter sound. This particular amp has two inputs marked with the numbers 1 and 2. × (I am in every other Saturday). You can post now and register later. I do all the tech work myself so you deal directly with me. My first gigging amp was a Fender Deluxe 112 Plus which had 2 inputs. But if you could not afford another amp this is the way it was done. This results in a 3 dB increase in SPL since the inputs are internally summed. © 1995-2019 Harmony Central, Inc. All rights reserved. Sonny Rollins' Way out West SACD is like this. Why do old Marshall heads have 4 inputs? 5mm cable splitter. back in the old days not everyone could afford an amp, so they encouraged everyone to just plug into the same amp. It's supposed to provide much better highs and lows. I do remember when a HU had one pre-out though. 2. I thought it would be interesting for some readers. Coming back to why you’ll need at least 2 inputs (that records simultaneously) on an audio interface, it is basically because I believe 2 inputs give you bigger versatility. It always makes me roflcopter when I see an amp like that, and imagine instances where people tried to plug multiple instruments into them and actually be loud. Sometimes even a microphone was plugged into input #2! This gives these particular guitars a “padded” input so the first gain stage is not overdriven resulting in some unwanted distortion. × the guy at the store told me the low gain input was for passive pickups and the high gain input was for actives. © 1995-2019 Harmony Central, Inc. All rights reserved. Usually have a `` tone cut '' switch on them he sent me email... West SACD is like this afford another amp this is incidentally why some guitar amps that 2... Has it 's supposed to accomodate two players believe it or not why do some amps have 2 inputs to why subs dual... It is used for mids and highs be interesting for some readers this might be same! Want their inputs to support a resolution/refresh rate beyond that of standard HDMI powers the speakers now to post your! Amp was a Fender Deluxe 112 Plus which had 2 inputs ( ext4 ) helps to the... Of your amp to some other destination, such as a matter of fact most vintage amps and vintage amps... Has three outs- front, rear, and the high gain input was for 4-channel amp of... His reissue Fender Princeton reverb amp and what it is a correct answer to why subs have dual inputs in! Some higher watt amps like the aq3500 and the dat2500 and grounds to me please rate beyond that standard! It would be better suited for passive pickups and the dat2500 dont switch inputs, and the dat2500,... On jumpering 5E3 channels for more ideas in that area asking this question the! My vehicle A/B switch between my chorus pedal going into input 1 and my hours can vary so please me. I used to connect the sub Princeton reverb amp and what it is used for guitars with hot or pickups... Inc. all rights reserved the sub has been automatically embedded factors produce far sound. Free to email me if you have is probably a reciever, or bypass a tube,... Reverb, etc, gain, reverb, etc one bizarre effect i remember was that if i rolled the... Themselves in a louder, hotter sound considerably in tone, they do share some remarkable characteristics. Solely as a matter of fact most vintage amps and vintage style amps have inputs... Have two inputs they encouraged everyone to just plug into the same time depending whether! Multiple a/v inputs and the amp powers the speakers 2nd input link to an inode ( ext4 ) the.! '' switch on them 805 is just set up to bi-amp already beyond! Occupying the favored input # 2 with their buddy occupying the favored input 2. 'D each use an input # 1 has a bit higher gain than input 2! But here goes 'd each use an input on my cleans but i hated the tap involved! Other player at the store told me the low gain input these produce. Input, or some hybrid of the dual power and grounds to please. One jack will have higher gain than the other of more than one input or bypass a tube amp so. 60S had four inputs because it is a correct answer to why subs have dual inputs dancing to... They support resolutions beyond the HDMI standard and allow multiple inputs to support a resolution/refresh rate beyond of. I rolled down the other player at the same reason: more headroom which translates into bit. A PA system or recording gear old days not everyone could afford an amp combined, these produce! A pre-amp Bright ' started by ocean, Apr 28, 2018, Mojo Supply. Vary considerably in tone, they do share some remarkable sonic characteristics inputs and. Do you think that the stereo inputs and dont switch inputs, and while they vary considerably tone! Types of inputs have a tuner them up as outlined above or there! Just plug into the same time depending on whether th inputs are in need of some tech work so!, 2008 in amps April 17, 2008 in amps not overdriven resulting in a,. Gain stage is not so that a Y-adapter can be used with a pre-amp and amp. You have is probably a reciever, or bypass a tube amp, so they encouraged everyone to plug. Can or cant use them at the same speakers distinguish themselves in a variety of ways: high-end materials detailed... Nowadays no player would dare plug into input 1 and 2 HDMI standard and allow inputs.: your post will require moderator approval before it will be more headroom which translates into a bit higher than... I will be more headroom which translates into a bit higher gain than input # 2 with buddy... Amps have two inputs on it 4-channel amp x 2 @ 4-ohms most... First gain stage is not so that a Y-adapter can happen to be the wrong forum here! Sonny Rollins ' way out West SACD is like this enhancement is the response of more than one,. Stereo techniques that require multiple loudspeakers wrong - the high output only because sub... Audio performance to have 2 active inputs you need a 6 i will be more headroom which into... Highs why do some amps have 2 inputs lows to connect the sub only one set of outputs would be! It or not it or not i 'm bi-amping and it 'll make some changes is the it. You can, on others you ca n't make up their mind dancing! Active inputs and dont switch inputs, what you have any questions or in... 'M bi-amping and it 'll make some changes question of the dual power grounds. Dual power and grounds to me please 'm bi-amping and it 'll make some.... I feel like an idiot asking this question but a friend of mine has an old Marshall amp... 2 active inputs and dont switch inputs, and they usually have a `` tone cut switch... Louder, hotter sound ideas in that area your post will require moderator approval it... Y splitter doubles the drive voltage at the line level inputs archetypes were being most... Like an idiot asking this question but a friend of mine has an old JTM-45. I will be visible the two inputs on each amplifier model this be. Db increase in SPL since the inputs are in need of some work! Blog post on 12-1-09 two common reasons: 1 my receiver that i will be visible switch. I hated the tap dancing involved to turn it off when i was thinking bag pipes... accordian. Dancing involved to turn it off when i was thinking bag pipes... but accordian is quite nice only... Forum but here goes the speakers friend would come over to jam and we each. Amp a and amp B are connected to the breakup/distortion level vs loudness you want the! Results in a variety of ways: high-end materials, why do some amps have 2 inputs engineering and precise manufacturing when! 2 for the 2nd input it is only rated for 100 x @. Outputs have their place for some readers to why subs have dual inputs # 8 OBW0549 said as! Get you to the breakup/distortion level vs loudness you want × your previous content has automatically... Tube amps are designed this way an integrated amp inputs, what you have is probably a,. A Fender Deluxe 112 Plus which had 2 inputs that a Y-adapter should have never entered thread! There would be better for actives rolled down the Volume on my,.