6
votes
Why do some audio amps use AC while others use DC
Is AC current fundamentally better as a working current when it comes to amplifying audio signal?
No. If anything, using an AC power supply makes it more difficult to have low noise.
The circuits ...
- 1,578
5
votes
Connect XLR microphone to amplifier
You don't connect a microphone directly to an amplifier, you would normally connect it to a sound board to be able to adjust the eq and volume prior to going to an amp. The sound board includes a ...
- 8,142
5
votes
Accepted
Why do some audio amps use AC while others use DC
The type of current is actually completely irrelevant as all transmitted power is AC. Unless you are driving your amplifier from batteries, everything has to be converted at some point to DC.
The end ...
- 8,815
5
votes
Why aren't amplifiers aimed AWAY from the audience on live shows?
First off… pros don't just decide they want to turn their amp up halfway through a gig. That's what sound crews are for; there's one guy whose job it is to make sure everyone on stage can hear ...
- 8,405
5
votes
Powered Amp placement in a smaller church setting
If you're running balanced line to the amp you can put it where you want.
If not, you need it near the mixer.
There's really no other consideration unless it's noisily fan-driven or you need a ...
- 8,405
5
votes
Accepted
Were active speakers a "revolution" in the operation of audio equipment?
The part that says "They also allow you to feed a passive speaker" is not true. There are some consumer products that have one "active" speaker containing the amp for both ...
- 530
4
votes
How to use a wireless mic with computer mini speakers for trade show
Those are powered speakers, at least they appear to be from a quick glance at the eBay page. Therefore, they have their own amplifier; you should be able to connect them directly to your microphone ...
- 341
3
votes
Accepted
Matching amplifier with speaker with unknown wattage
Well, it's like a game of Blackjack: to know the answer for sure, you'd have to bust your speakers.
If you have any amplifier at home or that you can borrow for a while, connect the speakers, put ...
- 721
3
votes
Accepted
Label on speaker reads "120W(MUSIC), 60W(DIN)." What does this mean?
"Music" power is a rating that has its closest analogs in "RMS" power or "continuous" power handling. That means it is a long-term rating based on the speaker's capability to dissipate heat that is ...
- 2,200
3
votes
Accepted
What is the best shape for passive sound amplification
The best shape for high frequencies (and some high mid) is the horn. But a horn can actually take many shapes. For example, its walls can be parallel like a didgeridoo. In fact, most, if not all, wind ...
- 1,563
3
votes
How to fix loud thunderous noise from Peavey PA system?
This is most likely an issue related to microphone cable, connectors or wireless receiver. Try the following to determine the source of the error:
Test amplifier
Connect amp and speakers only - NO ...
- 3,782
3
votes
Accepted
Using home cinema speakers with desktop audio interface
You are probably trying to connect passive speakers to line out level outputs, therefore the low acoustic level.
What you need is a four channels power amplifier with 4 ohms speakers outputs.
- 2,834
3
votes
Accepted
Amplifier + Speakers setup
You are correct in assuming that the speakers can only withstand the peak power for very short periods of time.
The VP2520 is a 4 Ω speaker. Looking at the technical specs of the amp, it seems the ...
- 183
3
votes
What is the difference between DAC, Sound Card and AMP?
Strictly speaking a "DAC" is a "Digital to Analogue Converter" which is a specific and critical component of the audio processing chain that connects a digital audio processing system with your ...
- 8,815
3
votes
Why am I hearing weird static nosie on my speakers
I have figured out the problem. We had a netgear wifi router connected to the mixer. It is supposed to enable wireless connectivity to our mixer. If I turned that off, the mic signal doesnt drop and ...
- 151
3
votes
How do I connect an amplifier to a PC?
To be honest, this is asking for trouble. I strongly recommend you purchase and use a DI box to isolate the amplifier from the computer. You are likely to experience hum and the DI will help to ...
- 8,815
3
votes
Accepted
Why does digital sound EQ use decibels instead of an amplitude multiplier?
Audio engineering uses decibels, because they are closer to how the human hearing perceives loudness: a double energy level is not twice as loud. A linear scale would require either a very large fader ...
- 146
3
votes
Whine from speakers when there is no audio playing
Computers are notorious for creating various types of electronic noise. When you use the internal sound card of the computer a lot of this electronic noise will be sent out on the audio cable and can ...
- 1,519
3
votes
Accepted
What happens when the output impedance of a headphone amp is higher than the input impedance of the headphones?
First a short historical notice.
In the old days, professional headphones often where 600 Ohm, sometimes 250 Ohm. The IEC standard from 1996 recommended an output impedance of 120 Ohms for the ...
- 1,519
2
votes
Optimal Headphone Amps volume settings?
In general it is best to keep the signal as hot as possible (i.e. 100%) until the final volume step. The reason is that you may have a noise floor from the computer and you may get additional noise on ...
- 3,782
2
votes
Accepted
Can I run a mixer off a battery?
Answer: yes, it appears to work. The question now becomes “how long will it last” so I'll wait for time to tell xD
- 53
2
votes
Accepted
Amp optical in with stereo cable out
Here is a post that might help you link.
You could also buy an audio interface that works standalone with a volume Knob.
This one looks nice : Esi Dr.DAC.
You only have to check if the volume is ok ...
- 1,103
2
votes
Accepted
Cable vs wireless connection from amplifier to speaker
The role of an audio power amplifier (be it a traditional hi-fi amplifier, the embedded amplifier in powered loudspeakers, or the small amplifier that drives the headphones of your smartphone) is to ...
- 721
2
votes
Accepted
Troubleshooting gain problems between microphone and amp
That microphone is quite LOW SENSITIVITY. If you were a head-banging heavy-metal rock musician screaming into the microphone halfway inside your mouth you would see quite a signficant signal out of it....
- 1,869
2
votes
Accepted
Amplitude Too Low?
From what I can tell your sources sound just fine! You should definitely not record "hotter", i.e. with more gain. And the mixes are in general balanced - I'd be a little harder with compressors here ...
- 3,782
2
votes
Accepted
Headset amplifier (headphone amplifier with mic preamp)
why don't you just plug it into the mic-input on the motherboard?
- 8,815
Only top scored, non community-wiki answers of a minimum length are eligible