Amp to sub amp?

I wanna amp a sub but the only amp I have is a standerd amp how can I make this so audio out of the amp is really bassy part of the music  and with the plugs there 3 wire yellow white and just in there  mid the loos one ground yellow right and white left

Asked by R.A.T.M 6 years ago  |  last reply 6 years ago


simple amp?

I am on a budget of $80 and i want to make a guitar amp with volume control, gain control, and a speaker. can someone help me do this? please?

Asked by boedogs 8 years ago  |  last reply 8 years ago


Suggestions for amp? Answered

Hello all, As my question shows, I am looking for suggestions of amps I should use to drIve my speakers. There are 2 speakers RMS rated at 3.7W and 4ohm. Any suggestion is appreciated. Many thanks in advance EDIT: it would be best for the amp to use less than 9v so that it is still portable.  Please suggest 

Asked by michalk1 4 years ago  |  last reply 4 years ago


Guitar Amps

Apologies to Wario, we've hijacked your original topic...So here's a new one that (might) stay on topic... Wario's OP: Well all of you welcome to my little group, heres our first topic, Should there be an instructible about how to create an amplifier? I think so because they are always expensive to buy, to build one though would be fun as well as useful, now you tell me and everyone else your opinion.

Posted by gmoon 11 years ago  |  last reply 10 years ago


Converting Sub Woofer amp to guitar amp?

I have a powered sub-woofer that had a blown speaker and being that I spent the money to get a better one I thought that converting the old sub woofer amp to use for my guitar would be a good idea. I already have something to practice with but making something that can be used for gigs would be great. However, I'm not an avid or experienced electronic wizard and will need the help to complete this project. Here is the info I have on the amp itself; OUTPUT POWER                          50W (4 ohms,DIN) THD                                                  10% @ 55Hz Reproduction Freq. Response   45Hz - 150Hz Phase Switch                                  0, 180 degrees Input Sensitivity (Sub In)                460 mVrms AC Power                                         120V/60Hz            Power Consumption                     70W (at 1/8 rated power) Standby Power Consumption     <6W What I do know that I need is a 1/4" mono plug jack and being that the input for the woofer is mono putting that in shouldn't be a problem. I'm mostly concerned about the frequencies that the amp will handle for playing a guitar and speaker recommendations. Plus any other opinions will be appreciated. I am expecting this to be a clean sounding amp and as it sits will only provide volume. An EQ is planned to be used after this amp is put together and then eventually an overdrive. I'm planning on connecting 2 50W speakers and wondering if I should hook them up in serial or parallel. With the help of my fellow instructabl-ians I will be able to post my 1st submission.

Asked by 95sprtcpedrvr 7 years ago  |  last reply 7 years ago


how many milli amps is in one amp ? Answered

Asked by eastmesarush 7 years ago  |  last reply 7 years ago


Which is the better amp? Answered

Hey Guys, I have attached two schematics of two different amps. Can you tell me which is better like  better quality, louder etc,

Asked by SA-DIY 3 years ago  |  last reply 3 years ago


10W audio amp?

Ok, so i want to get this one audio amp to work, but i can't seem to figure out how to wire it! the first picture is a schematic, and i have NO idea what the connections are, 1, 2, and 3 the second is a picture of the amplifier chip

Posted by Sandisk1duo 10 years ago  |  last reply 10 years ago


This is how to blow an amp

Try hooking a 1200 watt sub up to a 75 watt POS amp. It lasted for like 20 seconds and something blew and it all shut off. The sub is still fine though but damn now I need a new amp :( Any ideas? I wonder if I could build myself one?

Posted by Punkguyta 11 years ago  |  last reply 11 years ago


Do Amps matter?!?

Ok, I need a charger for my motorolla two way radios. I have the dock, only need a DC power supply. on one of them it states "18Volts DC +/- 20%, 15.3 watts" .Lets say I get 18VDC 1amp power supply, that's 18W,it means it's an overkill? or 15V 2Amps? As I understand, usually amps don't matter, as the item draws as much as it needs, but since it is a charger.. Cheers for the teh help!

Asked by zhgutas 6 years ago  |  last reply 6 years ago


Op-Amp Help

Hi- So, I made the circuit below to make sound-reactive blinky LEDs for a halloween costume (the round thing on the left is a condenser mic). I think I just got lucky that it worked, because I'm no genius when it comes to op-amp usage or design. Now I want to adapt it to control something else that needs a slightly higher voltage than the LEDs. Basically, I'd like the output to swing as high as V+ when the mic input is "loud" (a relative and possibly adjustable level). I've messed around with various resistor values as well as adding or removing resistors in places it seemed like it would help (according to the LM741 datasheet). All to no avail. Anyone out there who might know what to do? Again, I want the mic input to cause the output to go as hight as V+ (9V in this case) when it's loud, and be more or less at 0V when it's "quiet." Thanks in advance, _mykle

Posted by deadbilly 10 years ago  |  last reply 10 years ago


Speaker amp size?

Ok Im making a speaker, I´ve got 3 speakers connected in parallel and I want to buy an amplifier from Maplin. What kind of amplifier should I buy? Speakers:3W+3W+5W=11WMy multimeter says theyre 2 Ohms but thats because theyre connected in parallel really they are4Ohm+4Ohm+8OhmSo basically could someone tell me which amplifier to buy (it doesnt matter if its a DIY kit)

Posted by kacper00100 9 years ago  |  last reply 9 years ago


Is it possible to convert a solid state amp to a tube amp?

 Is it possible to convert a solid state amp to a tube amp?

Asked by adamgillies 8 years ago  |  last reply 8 years ago


is the LM741CN op amp work same as the LM741 op amp? Answered

I'm making a distotion pedel and radio shack has the LM741CN but not the LM741C op amp.

Asked by Flaky_Jay's 9 years ago  |  last reply 8 years ago


Is the Roland MicroCube a nice amp?

I'm considering a few amps, and I'm thinking of buying the Roland MicroCube off craigslist. Is it good? And would you recommend it?

Asked by Pei0172 9 years ago  |  last reply 6 years ago


Power amp clipping problem?

I recently bought a Pyramid PTA150 1500 watt power amp, and its clipping led's always seem to be lit when my mixer is set to half volume or higher, even when the amp is unplugged. Could they be powered from the input voltage when it is high enough? Is it bad to push my amp when they are lit? and it has a high volume cooling fan so I dont think it will overheat when pushed.?

Asked by macwhiz 7 years ago  |  last reply 7 years ago


need help with lm386 amp? Answered

Hello , i making a little amp.This is the layout: I use a AC to DC adapter (output DC 9V 200mA) as the power source, 8ohm speaker( the sharp 939 speaker).My stratocaster or mp3 player as the input. I have some problem with it : 1.I want to add a volume control , but i don't know what volume control should i use (resistor value) and where to put it (before the cap 220uF or after the cap)? 2.I want to add a gain control(for distortion effect), but some people use capacitor, some people use resistor.What should i use ? 3.When i plug in my Guitar, the speaker starting to noise, but when i touch the guitar string,a metallic or  the GND line, the noise disappear.How can i slove this problem ?? 4.What the pin7(bypass) of the LM386 use for and how can i use it ?? Thank for advance! Sorry for my bad English. :(

Asked by login721 7 years ago  |  last reply 6 years ago


50W amp 60W speakers? Answered

Ive got a 50w dual output Bluetooth only amp, I've also got Two 60w speakers would putting the max volume into the speakers damage them if played for a while. The speakers are 4" and slightly distort at max , could be from slight under power , the amp is rated at 8v to 24v and I am using a 19 v 3.16 amp laptop power supply Speakers 8ohm 60w  Amp dual output Bluetooth only 50w x2 Amp power 8v to 24v

Asked by bonze77 3 years ago  |  last reply 3 years ago


How to use an op-amp?

Hi, I've got an op-amp, the part number is OP07CP and I am trying to use it to amplify a voltage by around about 200 times. My set up is 6v going into a voltage divider with one resistor of 100ohm and a variable resistor of 10,000-50,000 ohm, so the output is 10mV-50mv. What I want to do is have the op-amp proportionally increase the voltage, so it goes to a voltage range of 1-5v, which an arduino can read. The power supply is  5v (from the arduino) and the powers both the voltage divider and the op-amp. For some reason, following the simple non-inverting op-amp configuration I just can't get it to work. Do I need a separate power source for the amp? I think it might have something to do with the fact that the amp's ground, input and negative are all just going to the arduino's ground. What can I do to fix it? If someone could help or even give me exact values and configurations of components that would be fantastic. I know that the amp and divider seem like a pointless complication if was just trying to measure the output of the variable resistor, but if you knew the greater extent of my project it would make more sense. Cheers

Asked by makincoolstuff 5 years ago  |  last reply 3 years ago


Power supply amp measurement?

My power supply says it can supply 12 Volts @ 10 amps.  It used to power 2 linear actuators drawing max 4.6 amps each, but no longer does. It still supplies 12V measured by multimeter. Is there an easy way to figure out how many amps it now supplies?

Asked by thisisted 2 years ago  |  last reply 2 years ago


Whats Better Volts or Amps? Answered

I know the two are completely different, just so you guys don't leave any I'm an idiot comments.  I was wondering if anyone knew what makes a better electromagnet for my coil gun.  Should I look for higher amps or just as many volts as I can find

Asked by jj.inc 8 years ago  |  last reply 2 years ago


Help with LM741 op-amp? Answered

Just to test it out, I hooked up a voltage follower with a LM741 Op-amp. But, when I measure the voltages, it doesn't work. When I have problems with such simple circuits, it makes me want to kick a small animal. Please, save the small animals, help me with my circuit. When I measure Vout, I expected something somewhere around 7-8 volts, but I'm actually getting 13-14 volts. I also tried changing the resistors in the voltage divider, but the output did not change. I'm getting my power from an unregulated 12v 1A wall transformer, but I measured it at around 15v unloaded. I replaced the chip once to rule out static electricity as the problem, and I got an output 0.1 volt higher. Any ideas?

Asked by WerdnaN 6 years ago  |  last reply 6 years ago


Headphone Amp For Laptop DJ

I use my laptop to play music...(using virtual dj software)....splitting the jack .. the volume from headphone is ok when playing small system.... big system the headphone volume is low....i need more ..i buy a volume switch (B5k) thinking that will solve the problem  ..but when i connect it and turn it up its the same volume i get as if i just connect it without... QUESTION can i add any thing to this to make the headphone louder..without using any external power source 6v,12v battery etc

Posted by hitek 6 years ago  |  last reply 6 years ago


DIY 2 CHANNEL AMP?

Hey guys,  I have been thinking, and I am going to build some solar speakers.  Now this is not my first time building solar speakers, so I know how to wire everything.  The only difference is this time I want to want to build my own amplifier.  I want to build a 2 channel 60-80watt amplifier.  I haven't found any schematics online that are similar to those, and I would want to wire in an off switch, a volume knob, a bass knob, and a treble knob.  Also, I would want to wire in an 3.5MM jack at the minimum.  If anybody could help me with some schematics and a list of parts, that would be wonderful.  Also, if anyone knows how, is it possible to wire a USB port onto here that will not only charge the device, but would also play music from the device to the amp.  Any help would be greatly appreciated.

Asked by Athelestan 6 years ago  |  last reply 6 years ago


High Amp MOSFET pins?

I have bought two 75N06 MOSFET's rated a 75A that I am intending on using in an inverter circuit I will build the inverter will be powered with a 9v battery that will only trigger the MOSFET's that will lead to a modified microwave oven transformer and a car battery (65Amp). With the car battery I intend to draw about 200Amps from. At 50-60Hz the MOSFET's( I'm guessing) will be able to take that current but I am not sure if the pins will be able to handle that current the pins are only 0.34mm(0.01339Inches) by 0.6mm(0.0236Inches) thick so will it be able to handle 200Amps? If not could you suggest how to do this possibly with a few lesser current MOSFET's (lesser will equal a bit cheaper) in parallel? Thank you for any suggestions.

Asked by The MadScientist 7 years ago  |  last reply 7 years ago



can i make a audio amp with an APA3541/4 8pin chip?

Asked by crazynath 8 years ago  |  last reply 8 years ago


why does my amp automaticly turn the protect on when i turn it on?

Null

Asked by 9 years ago  |  last reply 9 years ago


Is there an easy way to quickly make a battery powered amp? I'm trying to get an ipod to play on to a regular speaker

 I've looked at some of the projects on here already but not sure on the parts. So the easier the amp design  and the less hard to come by parts the better. Thank you !

Asked by pneff 9 years ago  |  last reply 9 years ago


Portable Amp using MC33171? Answered

Sir, I am really sorry to ask this but i don't know much about electronics but i want to make portable amp for speakers using MC33171 but I don't know which capacitors and resistors to connect to it. Please can you tell me which components i should use. I am gonna use DC current ,around 3.7 to 4.5 voltage. Thank you

Asked by harryjone 7 years ago  |  last reply 7 years ago


LM386 amp buzz? Answered

Should be an easy question :-) I built my first 386 based amp, and it works great, except for input volume control. Almost every schematic has 10K pot at input (connected to pin 3 on 386). Problem is when I turn pot all the way down I hear buzzing noise, especially if source is off. Also it doesn't cut source volume noticeably so I tried using 10M Pot, and it works except buzz is now super loud. So how would I control volume? 

Asked by bratan 6 years ago  |  last reply 6 years ago


problem with amp....? Answered

There is power but no sound output,there are relays in side that click on iv have a prob and there is power to about half the board just not out put stage and i know that there is a speaker protection that is probable not letting power through for some unknown reason\r\nsansui au-x410r rated at 180 w   240v does any1 have a surgestions on problem or how to get hold of a service manuel

Asked by andybuda 8 years ago  |  last reply 8 years ago


this bloody amp is going to get bined if i cant sort it out?

The relay in side has switched on to protect the speaker and wont switch back so there must be a fault some where can`t find 1 though..... errrr  not getting any readings via a multimeter on circuit board and i need a servicing manual to know where to prob  any help...

Asked by andybuda 8 years ago  |  last reply 8 years ago


i need help with this diagram. Answered

Just the diagram...

Asked by xxInSAniACxx 8 years ago  |  last reply 7 years ago


Building 5.1 Audio Amp , don't know where to start out with .? Answered

I have 5 Satellite speakers which has a max input power of 60W , rated 30W , 6 ohms impedance , 160 - 20,000 Hz And a passive subwoofer , max input of 140W rated 70W , 8 ohms impedance , 65 - 1,500 Hz (My god , i just searched underneath my bed and i found  Two of those  old but useful JBL GT82 Subs ) Impedance :Single-4Ohm 8" Max power : 200W Rated power : 100W it's a 8" sub Now i'm thinking of , 2 subs (lol)

Asked by Thereyouhaveit 8 years ago  |  last reply 8 years ago


i have got this thing off ebay just need a clue how to connect something to it? Answered

I have a small amp PCB off ebay it has the connectors down the side for the points to connects the parts to it but i just cant work out the connect or plug into the device what i have so far is R+          Speaker right R-           Speaker  right L+           Speaker left L-            Speaker left gnd        power +5v         power sw          switch gnd         switch lin gnd rin thanks for any help you can offer

Asked by nonamesleft 5 years ago  |  last reply 5 years ago


Are tube type amps really better than solid state type amps? Answered

A question below reminded me of this. My friend and neighbor plays a guitar and has been going on about how great his new Fender tube amp is and how much better it sounds than the solid state amp he previously used. Truthfully, I've listened to him play on both (he's no Chet Atkins for sure) and I can't discern much, if any difference. I've done a little research and heard words like, "warmer,"  "more vibrant" and "louder" used to describe the difference. With the exception of louder, most of these descriptions are not actually measurable. Is there a way to definitively say tubes are better, or is it just a subjective quality that depends upon the ear of the listener?

Asked by Burf 8 years ago  |  last reply 5 years ago


Ohms on a Speaker VS Ohms on an Amp? Answered

I am looking fixing up my cars stereo and I am not sure about how to pair a sub with an amp.  I am using crutchfield.com.  I found some speaker I subs I would like to get, they are 12" kickers and there is an 8 ohm version and a 4 ohm version.  They are rated for 50 - 150 watts.  Now my guess was to buy a 2 channel amp (I wan't two subs) and use it.  The one I am looking at is 125 watts @ 4 ohms X 2 speakers.  I read that you may want to buy an over-rated amp so you don't blow it by trying to drive excessive speakers.  Is this an acceptable combination. 

Asked by jj.inc 6 years ago  |  last reply 3 years ago


Aurora 9 bar Kit &amp; Custom PCB for Sell

Aurora 9 bar Kit and PCB are now available for sell. ******* Prices are reduced ******* Aurora 9 bar custom PCB price is $7.50 + $2 shipping for US address. The kit is also available at $25 + $5 shipping for US address. All parts except Molex connectors and power supply are included. Kit Contents (as pictured) 16x 120 Ohm (0603) 21x 1k Ohm (0603) 1x 10k Ohm (0603) 2x 1uF (0603) 1x 10uF (1206) 1x AP7333-33 or AP7313-33 (3.3V linear voltage regulator) 3x MMBT2907A or equivalent PNP transistor 12x MMBT2222A or equivalent NPN transistor 1x PIC24F08KA101 (SSOP) 10x 5mm Tricolor LED (common-cathode) 1x 5-way Tactile Switch Notes The PIC microcontroller is not pre-programmed. You need your own programmer to program the PIC microcontroller. The kit is also available with water clear LEDs instead of diffused type shown. Please specify if you want water clear LEDs (Special: $1 less for the water clear LEDs). The kit comes with one extra LED. Power connection cable (see the picture) - optional is available at $2 extra. (International shipping is $17) To place an order, please go to my blog page - http://www.theledart.com/blog/archives/233. You will find purchase buttons. Please view my Instructable for the detailed information on Aurora 9 bar. Contact me if you have any questions. &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;br&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;gt;

Posted by ledartist 7 years ago  |  last reply 7 years ago


Arduino LM386 Pre-Amp for Mic ?

I am trying to (pre) amplify the signal from an electret microphone using an LM386. The output goes into the Arduino analog input 5. I have tried multiple circuits, but none of them succeeded. Either the value settles at some constant or its 0/1023 and even when its in the 500- 550 range, the value doesn't seem to be changing with varying sound levels. I tried these circuits: http://wiring.org.co/learning/basics/microphone.html https://randomskk.net/projects/lightstrip/schematic.pdf http://www.josepino.com/circuits/mini_amplifier_lm386 http://www.diyaudio.com/forums/chip-amps/114698-preamp-using-lm386.html and a couple of more ones. I only have an LM386 on hand and cannot change it, as I need this to work out ASAP(in 2 days) for a science fair project. Hope you guys can help me on this. Kabir

Asked by mhkabir 6 years ago  |  last reply 6 years ago


Little Gem Guitar Amp Questions

I recently went to build the Little Gem guitar amp from runoffgroove.com. Its a great little amp from what i have read. I made the basic heart of it so far. I have the four caps, resistor, IC socket, and its all connected. I think basically all thats on the breadboard for the PCB layout here: http://runoffgroove.com/littlegem.html(scroll down). I'm confused on where to put the two pots and connect power and all that. I don't have the gain pot yet, but i do have the 25 ohm rheostat. The rheostat has three prongs, would i use the middle leg for the "out" part and the other two for the other part? I can't seem to get it. Also, is there a common ground between the input from the guitar, the 9v battery, volume pot, and output? Help please!Update:I found a layout on Flickr that explains it, i think. See the third picture.

Posted by John Smith 10 years ago  |  last reply 6 years ago


12v DC battery amp measurement? Answered

HI, I have a 12v dc battery and I wanted to measure the amps. Can anyone show me how to hook up the multimeter? Thanks

Asked by amantux 6 years ago  |  last reply 2 years ago


Do you add amps together? Answered

I guess I don't understand how amp ratings work. I want to use a 12v 5a power supply for a peltier plate. I am using a 2" cpu heatsink with a small fan attached to cool it properly. I tried it with a 9v battery and it worked but I want to use an AC to DC wall psu. The fan is 12v 0.12a. Do you add the amps together (5.12a) for the total? If so, does that mean a 5a psu is not enough? I don't want it to be too low and draw too many amps and damage something.

Asked by Arya42 4 years ago  |  last reply 4 years ago



How to limit amp draw of motors?

I am building an ROV that uses four thrusters, each can draw up to a maximum of 3-5 amps (motor says 3, website says 5 here). However, I will need to step up the voltage and I cant find anything that provides more than 10A continuous (currently using this but open to a higher amp option), so how can I limit the current the thrusters use in order to make sure that I dont blow out the DC-DC converter?

Asked by OlliM1 2 years ago  |  last reply 2 years ago


d2822 headphone amp build

I have a d2822 op amp and i want to make a headphone pocket amp out of it but i dont know how to wire it. can anyone help?

Posted by heyytraviss 7 years ago  |  last reply 7 years ago


help with lm386 OP amp?

I'm running my guitar's output signal into an Lm386 op amp to light up some LED's, but the amp puts out a constant signal instead of just when I play. What can I do?

Asked by spinynormann 8 years ago  |  last reply 8 years ago


20 watt PA amp transformers.

Today I bought a 20 watt PA amp at a garage sale for 5$, and there were 2 big transformers in there. Any ideas of what I could make?

Posted by mrbubl3s 7 years ago  |  last reply 7 years ago


Can anyone help me troubleshoot my amp?

I recently built an amp using lm386 ic. It works really well but it makes a buzzing sound while playing and while ideal with no input and power on.

Asked by Ankan Nayak 6 years ago  |  last reply 6 years ago


Need a small amp for unpowered speakers (that are to be plugged into the TV).

I've got a TV with left and right audio out and unpowered speakers. I would like to plug into the audio outs but I need a very simple amp to power the speakers. Any ideas on where to get/build a cheap amp? Bonus points if it fits in an Altoid tin. I did find a 10W stereo amp kit over at the Electronic Goldmine for $24. I was hoping to possibly do it even cheaper. I don't want to end up with any remotes, etc for the amp. So simple is better.

Asked by smasumur 9 years ago  |  last reply 9 years ago