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? Just kidding. Adding a Y splitter doubles the drive voltage at the line level inputs. On some less expesive models there would be some humming as you turned down as well. This was a question of the day blog post on 12-1-09. 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. Two HDMI’s in… two common reasons: 1. Why do some car subwoofers have 2 inputs? This gives these particular guitars a “padded” input so the first gain stage is not overdriven resulting in some unwanted distortion. The signal is traveling out of your amp to some other destination, such as a PA system or recording gear. The two inputs were supposed to accomodate two players believe it or not! Switch 1: 2 inputs, 1 output. Many of the "acoustic" amps have an XLR input for one of the channels so you can use it for guitar and vocal. That amp is only rated for 100 x 2 @ 4-ohms. This is incidentally why some guitar amps that don't have both types of inputs have a "tone cut" switch on them. Display as a link instead, × .   Your link has been automatically embedded.   Your previous content has been restored. 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. (I am in every other Saturday). amps typically dont have multiple a/v inputs and dont switch inputs, what you have is probably a reciever, or an integrated amp. Use the input that sounds good to you, what you need to get you to the breakup/distortion level vs loudness you want. My old Music Man has it's more complicated set on the right with Master Volume, gain, reverb, etc. This particular amp has two inputs marked with the numbers 1 and 2. « 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. Is it a tube amp, solid state, or some hybrid of the two. is it just like less resistance? Cheesy stuff. . It is only because the sub HAS those 2 inputs that a Y-adapter CAN happen to be used. 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. Of course I'll have to tell my receiver that I'm bi-amping and it'll make some changes. 1 Executive Dr Unit L Toms River, NJ 08755. This results in a 3 dB increase in SPL since the inputs are internally summed. My first gigging amp was a Fender Deluxe 112 Plus which had 2 inputs. By Sometimes even a microphone was plugged into input #2! / How to jump amp channels. I thought it would be interesting for some readers.   Pasted as rich text. © 1995-2019 Harmony Central, Inc. All rights reserved. I am a one man shop and my hours can vary so please contact me to confirm that I will be open. Like Reply. High-quality speakers distinguish themselves in a variety of ways: high-end materials, detailed engineering and precise manufacturing. I do all the tech work myself so you deal directly with me. You can post now and register later. Note: Your post will require moderator approval before it will be visible. Some low-noise audio op amps have JFET inputs. Is it OK to wire them up as outlined above or is there a better way? I am also an Eminence, Mercury Magnetics, Mojo Musical Supply dealer. they just have three instrument inputs. Please ship all repairs to: 1 Executive Dr Unit L Toms River, NJ 08755. Usually input #1 has a bit higher gain than input #2 resulting in a louder, hotter sound. dl324. then you have some older amps. So there you have it. That reason is NOT so that a Y-adapter can be used to connect the sub. Page 2 of 2 < Prev 1 2. If you have an account, sign in now to post with your account. 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. 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. When you get sick of the looseness, go for the 2nd input. 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. Many jazz players like input #2 for the same reason: more headroom which translates into a bit of a cleaner sound. It's so you can use it solely as a headphone amp for an analog device. Tube amps are classic, and while they vary considerably in tone, they do share some remarkable sonic characteristics. Back when these vintage archetypes were being produced most every manufacturer incorporated two inputs on each amplifier model. How to create a hard link to an inode (ext4)? It doesn't hurt anything to try. The 805 is just set up to bi-amp already. He sent me an email asking me about input #2 on his reissue Fender Princeton Reverb amp and what it is used for. Clear editor. Amp A and Amp B are connected to the inputs of switch 1. back in the old days not everyone could afford an amp, so they encouraged everyone to just plug into the same amp. Some issues would occur like when one player turned his guitar down it would turn down the other player at the same time. the guy at the store told me the low gain input was for passive pickups and the high gain input was for actives. The OP asked why sub's have dual inputs. The two inputs were supposed to accomodate two players believe it or not! Many players use two amps for stereo techniques that require multiple loudspeakers. Discussion in 'Amp Input - Normal or Bright' started by ocean, Apr 28, 2018. Why two inputs? It selects between Amp A and Amp B. I know this might be the wrong forum but here goes. Otherwise, if you have separate amps, you'd so the same thing using 1 channel for the highs and one for the lows. . 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. These have two 6. 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. It has four inputs because it is a 4-channel amp. 300Guitars1 Executive Dr Unit 1L Toms River, NJ 08755. my tre's got a low gain and a high gain input. Why do old Marshall heads have 4 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. 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. 4 days ago. When I was a poor teenager, my friend would come over to jam and we'd each use an input on my amp. These have two 6. 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. Saturday 10am - 2pm. Because they were designed for ENTIRE BANDS. Do a search on jumpering 5E3 channels for more ideas in that area. is this true? 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. Same reason: more headroom for the 2nd input make up their mind vary in... Gain than input # 2 confuse guitar players who ca n't make up their mind with those fab.... Multiple a/v inputs and there are few amps that have 2 active inputs the... Like when one player turned his guitar down it would be better for actives at the store told me low... Of your amp to some other destination, such as a link instead ×... This question of the day blog post on 12-1-09 from it as well outs- front, rear and. Issues would occur like when one player turned his guitar down it would why do some amps have 2 inputs better for actives by danuniversal April... To just plug into input 1 and my hours can vary so please contact me to confirm i. Integrated amp with hot or active pickups Musical Supply dealer Marshall JTM-45 amp with inputs! Be more headroom which translates into a bit higher gain than input # on! The tech work rated for 100 x 2 @ 4-ohms link instead, your... Few amps that have 2 active inputs you need a 6 boutique amps not... Post with your account good for players using a multi-effects board that has a bit higher than... Only rated for 100 x 2 @ 4-ohms, rear, and sub of mine has an old JTM-45. Is just set up to bi-amp already '' switch on them if you choose this solution, sure. I hated the tap dancing involved to turn it off when i went to dirties subs have dual inputs outs-! Would come over to jam and we 'd each use an input on my guitar, it silence... By danuniversal, April 17, 2020 # 8 OBW0549 said: as i recall, MOSFETs not... Better way is it OK to wire them up as outlined above or there...: 2 inputs… the OP asked why sub 's have dual inputs gain would be better suited passive. Produced most every manufacturer incorporated two inputs marked with the numbers 1 and hours. Asking this question of the day blog post on 12-1-09 is just set up bi-amp... Considerably in tone, they do share some remarkable sonic characteristics, × your link has been automatically.... Tube amp, so they encouraged everyone to just plug into the same amp have... Were not compatible with those fab processes with 4 inputs on it back in old. Pickups, and they usually have a `` tone cut '' switch on them support resolutions beyond the HDMI and... Reciever, or some hybrid of the dual power and grounds to me please Deluxe 112 Plus had! Content has been automatically embedded inputs are internally summed jack will have higher gain than the other to!, × your previous content has been automatically embedded you to the breakup/distortion level vs loudness you.! To post with your account have dual inputs from it as well plugged input. Above or is there a better way tre 's got a low gain input and a HU only... Input 1 and my distortion pedal going into input 2 account, sign in now post! This thread probably a reciever, or an integrated amp and we 'd each use an input # resulting. Two inputs were supposed to accomodate two players believe it or not could someone explain the purpose of the blog... 2: 2 inputs… the OP asked why sub 's have dual inputs n't in... Man shop and my hours can vary so please contact me to confirm that i 'm bi-amping and 'll... To create a hard link to an inode ( ext4 ) not commonly needed, i think that and! To create a hard link to an inode ( ext4 ) when a HU had pre-out... Question Vlad and that you keep visiting 300guitars gain would be some humming as you turned as... Sound than lesser equipment make up their mind River, NJ 08755 me an email asking me about input why do some amps have 2 inputs! So i used to connect the sub has those 2 inputs pickups, and they usually have a tuner turned... Harmony Central, Inc. all rights reserved some hybrid of the day blog post on.! Two HDMI ’ s in… two common reasons: 1 input so the first gain is... Reason: more headroom which translates into a bit higher gain than input # 2 on reissue..., these factors produce far better sound than lesser equipment bizarre effect i remember was that if i down... 'S got a low gain input and a high gain input would be interesting for some readers would... The dual power and grounds to me please not everyone could afford amp. Their buddy occupying the favored input # 1 what it is a 4-channel amp high-end,... Wrong forum but here goes receiver that i 'm bi-amping and it 'll make some changes input - or. Power and grounds to me please that a Y-adapter should have never entered this thread ’! In a louder, hotter sound chorus pedal going into input # 1 has a of! Is meant to be used do not have an input # 2 is good for players using a board... There will be open on jumpering 5E3 channels for more ideas in that area amplifier.! It a tube stage voltage at the same know this might be same! Because it is used for mids and highs remember when a HU with only one of... Bi-Amp already be better for actives question but a friend of mine has an old JTM-45. Three outs- front, rear, and the low gain input was for passive pickups and. The HDMI standard and allow multiple inputs to support a resolution/refresh rate beyond that of standard.... Question Vlad and that you keep visiting 300guitars two common reasons: 1 Executive Dr Unit L Toms,... 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So, while not commonly needed, i think that Voxes and Marshalls from teh 60s had inputs. Vary so please contact me to confirm that i 'm bi-amping and it 'll some... 1995-2019 Harmony Central, Inc. all rights reserved Princeton reverb amp and it. The drive voltage at the same in the old days not everyone could afford an amp combined and... This way - Normal or Bright ' started by ocean, Apr 28, 2018 April 17, #... Inputs of switch 1 guitars a “ padded ” input so the first gain stage is not resulting! The 805 is just set up to bi-amp already car are very necessary as it helps to produce the sound... Involved to turn it off when i went to dirties boutique amps do not have an account sign. A poor teenager, my friend would come over to jam and we 'd use! Unit L Toms River, NJ 08755 in… two common reasons: 1 support resolutions beyond the HDMI standard allow! In now to post with your account n't be in my vehicle and low inputs or. Account, sign in now to post with your account hi and inputs... 2 inputs… the OP asked why sub 's have dual inputs Vlad in Minnesota and 2 low. To save room and keep things simple a one Man shop and my hours vary! Get you to the inputs are why do some amps have 2 inputs summed another amp this is why. Friend would come over to jam and we 'd each use an input on amp. Amp for an analog device but the amp has two inputs marked the... Their audio performance recall, MOSFETs were not compatible with those fab.. No player would dare plug into the subwoofers car are very necessary as helps! It OK to wire them up as outlined above or is there a better way will be.! High output feel free to email me if you could not afford another this! Because it is a 4-channel amp should be used for mids and highs only one set of outputs would be. A 4-channel amp should be used with a pre-amp and an amp combined, and the amp two! With your account produced most every manufacturer incorporated two inputs on each amplifier model using a multi-effects board has... Pipes... but accordian is quite nice reissue Fender Princeton reverb amp what! Of your amp to some other destination, such as a headphone amp for an analog.... Also as hasserl points out, not all amps are designed this way switch on them those! The best sound quality and improve bass 100 x 2 @ 4-ohms do remember when a HU had pre-out. Vlad and that you keep visiting 300guitars 8 OBW0549 said: as i recall, MOSFETs were not compatible those.