Hot answers tagged

19

This is called feedback. Put simply, the microphone hears some sound. It sends it to the amp. The amp sends it to the speaker. Some time has passed. The microphone hears the sound from the speaker (now louder), sends it to the amp, and round-and-round it goes, getting louder each time. After a few goes around the loop, you reach internal limits and ...


13

The noises are caused by electronics picking up wireless signals from your mobile phone and translating the interference into sound. Well-shielded circuits won't have this problem, but it's common in consumer electronics and some musical equipment, notably guitar leads. There's no damage to your equipment, and if the sound is a problem just keep the phone ...


12

It is so the speaker is pointed more towards your head than your feet and so you can hear yourself better. If a small combo-amp is on the ground, the sound has to bounce quite a bit to actually get to your ears and if you are at a band practice or a gig it may mean bandmates can hear you better than you can hear yourself. If your speaker is pointed at your ...


12

No, it will not damage the speaker. The high tones of a guitar are simply not capable of damaging your bass amp. Even if the amp isn't really suitable for these high tones (and in many cases, they can actually play them just fine), the amp will perfectly survive them. No harm there. The other way around is a much worse idea, because deep bass tones tend to ...


12

Well first, the amount of power inherent in the average festival rig or even an installed club system will dwarf what you can get out of any four speakers on the planet. That chest-thumping kick drum that's a mainstay of EDM is produced by moving a lot of air very quickly, creating a shockwave you can feel. That requires a lot of big cones, in turn requiring ...


10

A head is simply the name for an amplifier without a speaker. Your friends won't have heads on top of amps, they'll have heads on top of speakers (with the head driving the speaker). The "basic guitar amp" you have at the moment, is probably an amplifier and speaker combined in one cabinet. These are commonly called combos. There are several reasons for ...


9

It is true that a tube amp should not be operated without a load, i.e. without speakers (or a dummy load) connected. Solid state amps don't have that problem. The reason is that (almost) all tube amps use an output transformer, which can produce high voltage peaks if its secondary (output) winding is not connected, because the energy from the primary (from ...


9

Stage monitors are designed to do something quite different from what normal stereo speakers are designed to do. That means if you get great stage monitors, they won't sound so great as stereo speakers and vice/versa. But you could use one for the other. Getting effective stage monitors is more important, to me, because you want to be able to hear yourself ...


8

I haven't found any comments on this question online from someone who actually knows a lot about amplifier design. I also have not been able to find any horror stories such as "I did this once and destroyed my amp/speaker", which I would expect to find if it were actually an issue. I have found many mentions of professional bass players using guitar amps and ...


7

Having faced this issue some times, the best reccomendation i can give you is first of all, listen to your recordings in various systems, the more, the best, because if you want the world to listen to it, you can never test every system in the world, so, try as many as you can and try to balance for the best in all the systems. Particularly, one of the best ...


7

I see that you noticed this happens usually with the bass amp, and I don't see an answer addressing bass in particular. I can think of some reasons: Mechanical Coupling Bass amps are isolated from the floor to avoid mechanical coupling. Depending on the venue (stage design, materials, acoustics, etc) floor vibration can cause an array of problems, like ...


7

Key factors (hometheatershack.com) are your woofers' combined surface area; their displacement, achievable low Hz factors and an amplifier capable of delivering the power needs of the speaker configuration. You simply cannot expect this, to do what this does, which makes it feel like this. Behind the bar at the club, you might find racks full of ...


7

Hi fidelity reproduction of high frequencies is undesirable in electric guitar amplification. If you look at what actually comes out of a guitar amp, things get really messy around 5 - 6 kHz and then drop off rapidly after that. This is a good thing. If you ever use any kind of amp or pedal distortion designed for guitar and then run it directly into a ...


6

Usually the ohms rating is the minimum the amp is safe with (as when you reduce resistance you increase current) so you are going the safer direction here by using an 8 ohm speaker. So for a 300W amplifier through a 4ohm speaker, using Power = Current squared X Resistance, you can supply up to around 8A. Using your 8ohm speaker the same equation gives your ...


6

It depends on the load requirements of the amplifier and the impedances of the speakers, neither of which you have specified. If the amplifier has a 4 ohm output transformer tap, or it is solid state and well-specified into a 4 ohm load, you can put 2 x 8ohms or 4 x 16ohms in parallel. Similarly if you have 2 x 16ohm speakers you can put them in parallel ...


5

The audio signal coming out of a keyboard has all the same characteristics as the signal coming out of a CD player's line-out socket. For home use you just need the same kind of speakers/amplifier as you would use for a CD player. A hi-fi system, or a pair of powered PC speakers will do the job nicely. The "keyboard equivalent" of a guitar amp -- something ...


5

Generally, for low level outputs, such as headphones, the current change due to impedance is unlikely to cause an issue. If you were wanting to connect many headphones it would probably degrade badly, but for just splitting to a second pair I wouldn't bother with an active circuit - just a normal headphone splitter should do just fine.


5

Another couple of reasons why someone would choose head/speaker over combo : a comparable combo usually weighs more than one or the other, so is harder to hump around (poor old roady).Heads go wrong more frequently than speakers, so carrying a spare head to a gig is better than taking two combos. In defence of the combo, one doesn't need to remember the ...


5

You shouldn't connect any unpowered speakers directly into that mixer. It produces line-level output, which is designed to be fed into an amplifier, then to the speakers. In order to repurpose those speakers, you'll need to purchase an amplifier that can appropriately drive them. If you connect those speakers directly to the mixer (the only way I could ...


5

It's really quite simple. Your Hi-Fi stereo speakers are designed to produce the full range audio spectrum that might be found in recordings that you would play through your system. This will include the lowest notes of a bass and a kick drum to the high frequency of a cymbal or highest notes of an 88 key keyboard. The frequency bandwidth that an ...


4

A well as turning the monitors down, I would suggest muting the monitor channels and turning down the volume on the monitor if they are independently powered. I know turning the levels right down should remove any voltage across the output, but some mixers seem to still have a DC offset which will cause a pop when the mixer is powered down. Muting on some ...


4

Just mixing with headphones as recommended in a comment, is a bit risky, since the sound differs quite a lot from what you get with a couple of speakers. Some kind of monitors are definitely recommended. A good pair of monitors is obviously preferable, but the important thing is to know your monitors well. If you have a pair of imperfect monitors, but you ...


4

Defer this decision until you know where you're going to play. I'm going to assume you have an acoustic drumkit, which you won't be mic'ing up. So the drums set a baseline volume which the other instruments and voices need to match. You actually don't need much to achieve this. The guitarist just needs a modest amp - one step up from a practice amp, ...


4

If you have access to a looper pedal, such as the Boss RC series, they have a line in. Connect the pedal to the looper, and then your MP3 player to the line in of the loop pedal.


4

Who told you you can't use you home PA? Sure enough, if you just plug the guitar right in a PA, it'll sound somewhat boring, but there's no reason you could not do it anyway. In fact, such a “super-clean” sound can IMO sometimes be a pleasant alternative. The thing is, guitar amps aren't designed to sound “good” in a HiFi sense, at ...


4

As long as the speaker's power rating is > 15W (which is the amp's maximum power) you don't need to worry too much. The main question is if it's really worth to replace the built-in speaker, which - I heard - is actually not bad at all. The only problem is its relatively small size, but due to the combo's size it will be hard to replace it with a much bigger ...


4

Guitar cabinets are designed to give a completely different response from HiFi speakers. In particular, they cut away / smear out a lot of the high frequencies and transients. This is really important for distortion sounds (without something like a guitar cabinet response, these sound just extremely harsh, but not really powerful – rather thin†),...


4

I agree that looking at the future configuration you want is a good idea becuase that way you're not spending money on something now and then spending more to replace it later. From that point of view, one piece of advice is to imagine your ideal, complete PA system that you hope to have in the future. Then, when you want to add or change what you currently ...


4

The 'phones out sends a very small electrical amount of power, to make the headphones work. Ordinary speakers, hi-fi and especially those used on stage, will require an awful lot more power to make them work. You could use the 'phones socket to plug into an amplifier, which would then produce enough to make the speakers work. In the same sort of way, you'd ...


3

The replacements would appear to be black widows, 15", 8 ohms, with more power capacity than the originals, which should also be black widows. Good speakers ! First check the drivers out of circuit, using a small battery. 9v will do. When it's connected to the speaker, the cone should move out or in. If not, it needs changing. If it moves, it should either ...



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