Questions tagged [amplifier]

An amplifier is a device for taking a signal level electrical signal and increases it to a level that can be used to power a speaker

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1answer
1k views

RCA in to a Microphone Input

I am trying to use a TV as an audio source on an amp. The amp only has 2 sets of RCA inputs while the other 3 inputs are mic jacks. The mic hacks have a switch over them that selects between - "line"...
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2answers
7k views

Label on speaker reads “120W(MUSIC), 60W(DIN).” What does this mean?

I have 2 (old and crappy) speakers I want to hook up to an amplifier and need to know the wattage. What does "120W(music), 60W(DIN)" mean? N.B. - I am using the speakers as part of a PA system to ...
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284 views

Weird noise from amplifier

I hope this is the right place to ask and you guys can help me. I obtain a strange noise, most likely originating from my amplifier. I tried to record it with my phone, so the quality is not really ...
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1answer
2k views

setup for having an amp output mono to two speakers

I have two passive bookshelf speakers Micca - MB42X and would like to use a single amp to send the same audio signal to each speaker. I do not want one speaker to receive the left channel and one to ...
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1answer
21 views

Should i buy amplifiers? [closed]

i'm gonna buy some speakers to my car. I got a regular radio. My doubt is: do i need to buy amplifier? Or just the speakers would be enough and right?
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77 views

Need help finding a audio amp

first of all I'm a newbie to the whole audio thing. For the longest time I have been using a pair of speakers with a self build amp (not build by me, but a friend) and I'm using it solely in ...
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1answer
47 views

Amp optical in with stereo cable out [closed]

I've got a tv in my outdoor area as well as some stereo speakers built into the roof. There are stereo cables which lead from the speakers to where the tv is. I recently bought a budget amp which was ...
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1answer
47 views

How to even speach loudness?

I am working with a recording (some speach) where it has parts with different loudness (amplitude) so I would like to make all those parts evenly loud. Actualy, I would like to make every word spoken ...
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0answers
32 views

Are amplifiers with optical in/out truly transparent?

I understand that bad amps introduce distortion and that is bad, but wouldn't the best amp be the one that is most true to the input signal, aside from amplitude amplification of course? Optical ...
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1answer
102 views

Not enough power to run speakers at 60ft distance?

I am trying to move my powered mixer to the back of a building. The wires have to travel 60ft to the mic's and speakers at the front of the building. When I tried this I could not get sound to come ...
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2answers
2k views

How to fix loud thunderous noise from Peavey PA system?

I am having a severe problem with my Peavey PA system. After connecting all the system components together, the PA system is left ON: A loud continuous noise of distortion starts coming out of the ...
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0answers
2k views

Help me understand Class-D amplifier intrinsic noise

Introduction I've recently entered the prosumer/pro audio market by buying JBL LSR305 studio monitors and noticed that the tweeters produce constant high-pitched noise (most people apparently call it ...
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3answers
2k views

How to prevent PA system from sound interference

I have recently brought a new PA amplifier and new cables as my old amplifier took RCA and this new one takes XLR, so when my new amplifier arrived I set it up like normal and realised there is a ...
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2answers
3k views

Focusrite Scarlett 2i4 to my Bass Amp. How to connect?

I want to modify a bit more my bass sound by using the amplitube VST before sending it to my amp. The scarlett 2i4 has RCA outputs, and my bass amp (Ampeg BA108) has a CD input (RCA) and effect loop ...
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1answer
121 views

Using home cinema speakers with desktop audio interface

I would like to match four speakers left from an old Philips LX3600D home cinema system with my Komplete Audio 6 interface. When I test the levels with crocodile clips I get a very low intensity sound ...
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1answer
128 views

Noise reduction on a guitar amplifier over a voltage regulator

I'm new to the community and I'm not sure this is the place to be asking, but it seemed reasonable to give it a shot. Also I'm not an electrical engineer so I'm not familiar with the English jargon. ...
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1answer
226 views

What is added by using a guitar amp over just pedals?

For instance, both pedals and amps can produce overdrive / distortion, though perhaps different flavors. Is there something that only an amp can produce? What is it? Do amp sim pedals approximate it ...
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1answer
434 views

Amplifier + Speakers setup

I have a noob question about an amp/speaker setup that I would like to buy. I currently have a Behringer EUROPOWER EP2000 amplifier with two passive Behringer EUROLIVE B212XL speakers. The amplifier ...
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2answers
1k views

Optimal Headphone Amps volume settings?

I use a headphone amps with my Mac Book Air, there are two volume controls in this setup: one is the Mac Book Air, and the other one is the amp. What should be the optimal settings for both volumes? ...
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1answer
349 views

Can I run a mixer off a battery?

I am in India, and there's no RadioShack equivalent here ... running to the corner store isn't an option to get components. If I need to get components I'll have to order them online. So. My question:...
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2answers
608 views

How do the outputs on this audio interface work?

I don't know much about audio interfaces and how they work. I'm looking at the Line 6 AMPLIFi TT and I have have two questions about the outputs. If an interface has an "AMP OUT" like this one does,...
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1answer
69 views

Testing low-end turntable performance [closed]

I've found an old low end turntable on a garage sale, and I was trying to get it to work with some of my LPs. It's an AKAI AP-M393, very low end and very basic. I've realised I need a phono preamp ...
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2answers
1k views

How to setup microphone with pre-amp for general purpose PC input use as well as audio recording?

I'm trying to get a multipurpose audio setup going on my PC which could include but isn't limited to audio recording and VOIP (gaming, streaming, skype, etc.). I have a Focusrite Scarlett 6i6 pre-...
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3answers
424 views

Looking for a compact light-weight Mono power amplifier

I know this is a sourcing-question and these are frowned upon, but I've been searching for a while now, and can't seem to be able to find a compact, light-weight 1-or-2 channel amplifier with balanced ...
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1answer
46 views

Amplifier output doubt

So I've been into sound for a while, but there's just one thing that goes over my head. I'll use an example. Say you have an amplifier, in which datasheet it is specified that it outputs 300 watts ...
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1answer
81 views

Impedance for amp and speaker combo

I have a set of speakers rated at 6ohms impedance and handle 75W, but my amp says 8 ohms or more. Does this mean I need to buy a 2ohm resistor for each speaker? Or just not turn it up loud? Or play it ...
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1answer
917 views

Difference between internal sound card and Audio interface in simple setups

A set up consists of a single instrument that is guitar and a recording software like pro tools along with amplitube as the guitar effects. Is there a difference between using the internal mac sound ...
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3answers
80 views

Using Mac/PC as an amp modeler and recorder

I'm trying to use a software called "Amplitube" as a guitar amplifier on a macbook air. However I'm really confused. I used to have a mac with both a mic input and sound output jacks so I simply ...
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2answers
4k views

Does a Headphone Amp Increase Output Volume?

I just bought an electronic drumkit and it works great when playing it through a drum kit amplifier. But the volume is too soft when I try playing them through headphones (I know it's not the ...
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1answer
2k views

Troubleshooting amp clicking and muting the speakers

I am trying to use an old amp (marantz pm47 - nominal 40 watts per channel into 8Ω) with a pair of speakers (Kef Coda 7 - nominal 10-70W at 6Ω). Every so often it clicks (the same like the power-up ...
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3answers
7k views

What is the best shape for passive sound amplification

I'm asking this to make a passive sound amplifiyer. In the web they usually do a HORN shape that looks like exponential function mirrored about 'x' axes. But I wonder is there a better shape for ...
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1answer
112 views

Resonator guitar pickup

I bought an used resonator guitar from eBay, and I found out it has some kind of pickup. A pickup is a nice-to-have feature, no must-feature. I have not seen a pickup like this before. It has no ...
3
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1answer
390 views

Guitar amp sound distorted when miked up

I am trying to understand an issue I have when I record tubed guitar amps on the distortion channel with a standard SM57. I always feel like my miked sound is much more distorted than the actual ...
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2answers
930 views

Why do we need power amplifier with hundred watts of power?

For normal home audio systems, the speakers usually have sensitivities around 85~90 dB. So according to the sound pressure chart, it's pretty loud already at 1 Watt of power. Then why do audio ...
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1answer
1k views

Connecting multiple speakers to a stereo amplifier? [closed]

Can it damage a stereo amplifier to connect multiple speakers into a single channel, playing at full or high volume? As an example, consider the Cambridge A1: Input Impedance: 47k ohms Loudspeaker ...
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1answer
2k views

Bad to connect a different speaker in each channel of a stereo amp? [closed]

Will it damage the speakers or amp if I connect non-matching speakers to it? For example: a Paradigm speaker (7seMk3) to the left channel (it's tweeter doesn't work, but the 2 woofers are nice and ...
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4answers
6k views

What are good amplification methods for percussive fingerstyle (on an acoustic guitar)?

I have a guitar with an active pickup built-in. It works fine in normal playing, but when playing percussive fingerstyle (example below), there are two big issues: ...
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2answers
2k views

Amplitube VST won't respond to MIDI PC messages from Ableton Live

I have been dealing with this problem for a few months now without any success and I was wondering if anyone has ran into this issue. The scenario I'm about to describe used to work flawlessly ...
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5answers
518 views

What makes a headphone monitoring amplifier so expensive? any tips for alternatives?

I was looking for some simple headphone amplifiers for translation booths, to give the translators the ability to adjust the volume of their headphones. No need for super Hi-Fi quality in a relatively ...
2
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1answer
95 views

Left channel dropped on TA-5650

I have a TA-5650 VFET amp. It has worked great for years, but every once in a while it would drop the left channel. A few times now I have blown the case out with air and the problem has gone away ...
2
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1answer
498 views

Wiring an 120W amp head to the box (stereo)

I have a 120W amp head which has two outputs in the back and a switch for 16/8/4 Ω. In the instructions there is a table which is not perfectly clear to me. Does "1x 16Ω" mean one speaker of 16Ω or ...
2
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1answer
209 views

All-in-one CD-receiver vs. component receiver

I am looking for a music system for my living room. I haven't been really listening to the music at home for years (only going to classical music concerts), and now want to bring it back into my life. ...
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3answers
84 views

How are tube amps constructed?

need a Little HISTORY about Tube Amplifiers or Tube Sound, need Signal Processing theory of the same, Its Schematics and importantly need how it is RE-Modeled into a DSP Plugin. (either by ...
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1answer
197 views

I need some information about vintage tube amplifiers

Editing My question again. I need a Little HISTORY about Tube Amplifiers or Tube Sound, need Signal Processing theory of the same, Its Schematics and importantly need how it is RE-Modeled into ...
3
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1answer
104 views

Amplifier Power Ratings

I want to understand the rating of my Marantz PM6002 amp. The backplate says: System 1: 4 - 16 Ohms System 2: 4 - 16 Ohms 1 + 2 : 8 - 16 Ohms So looking at the backplate, am I within the stated ...
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3answers
26k views

If I want to use a microphone with a portable mini amp, will a preamp/mixer significantly improve the sound quality? This is for small live gigs

I'm an amateur musician who knows very little about audio equipment, but I'd like to start learning and have my own basic setup so as not to rely completely on the equipment at venues (sometimes they ...
4
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1answer
157 views

How Do You Clean RCA Ports?

I have an old amp which is beginning to show wear and scratches on its RCA ports. However, alcohol, water, and a simple cloth dont work and cannot remove the grime on the ports. What is the best ...
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1answer
1k views

How to protect an amplifier from blowing an internal fuse

At the last gig I played the guitarists amplifier head blew a mains fuse and we didn't have a replacement. We've learned our lesson about having spare fuses, sufficed to say. Thankfully we had a ...
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1answer
319 views

Carver amp/receiver speaker problem

I have a Carver amp/receiver withy phono, cd and tape inputs, two sets of speakers A and B. From time to time the right speakers (or the left) will simply go out. What is wrong?
2
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1answer
2k views

Can I put a powered amp inside a water/air-tight enclosure?

For a semi-permanent outdoor installation I need to waterproof a powered amplifier. (We opted against marine amplifiers for audio-input quality, and power-supply reasons) What happens if I put a ...