Speakers won't play ''loud at all '' Just Very faint
Infinity Reference Speakers - Don't Sound Load at all. We hear sound, but very low. They are Infinityt Reference 200.5 8.OHM 15-150 Watts. The # on them show 331050 but there is also this # J261-834100 neither of the numbers say:
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1st thing is amps outputs have to be properly "loaded" this value is given in "ohms" if your amp says minimum speaker "loading" impedance is 4 ohms ( I suspect it does) then you may load that 1 channel down to only 4 ohms or amp will be damaged , most speakers are rated in ohm's Impedance (look for Greek symbol for omega) look for its rating somewhere on it doing the electrical formula math if you connect two 4 ohm speakers in parallel to one channel ( +=+ / -/- ) this divides down to 2 ohms (not good) but if you take same speakers and connect in series together (+to-/+to-) this gives you eight ohms (better) , the watts rating is a figure for you to determine the amount of power the speakers will take before failure , hence just because you connect 200 watt speakers to a 2000 watt amp is no indication that speaker will take all 2000 watts ( it will fail long before that point ) watts do ADD together like the above example two 4 ohm 250 watt speakers connected to one channel of amp in series will look like ONE 8 ohm 500 watt speaker to amp of course over 16 ohms load speaker volume will greatly diminish and amps have max impedance loads for them as well although there not often published
this is why I love the old TUBE!!! amps they load all the way down to 2 ohms and go up as far as 32 ohms load with no problems , they sound better as well across the board as well
put a cd in and ,as it is playing, very slowly pull the jackplug out of the soundcard socket, does it suddenly play loudly at some point? If so you probably have the wrong size jackplug and might need an adaptor. Check that the cable is in the correct hole. Check that the volume on the speakers is turned up as well as the one on your PC/laptop.
Check that the master volume in your mixer is turned up
Very common problem with today's receivers. Receivers made today don't have a true preamp section in the amplifier and do not amplify the sound to the extent of an older receiver. I have large 15" front speakers on my system, and have stuck with my 15 year old receiver just because I know that a new receiver will not have the power to drive them well. Many of the newer receivers need to be turned up to 50-60% before you can even hear anything from the speakers.
have you tried looking at your phono leads,turn volume down until it is low enough that you can still hear the music playing,give the phono leads a turn to see if its a loose connection.if not,try the right channel phono in the left channel to see if this fixes your problem.also you could do the same with your speaker leads and see if that solves the issue.maybe a bad connection is the cause?.it may also help to try and move your cd player away from your amplifier.it could also have been overdriven (played too loud for too long) on the night of the party,only you will know if this was the case or not.
This amp is rated at 200 watts when run at 4 ohm load when in bridged mode (mono).You will need to check the measurement of the load at the amp's positive and negative location where it meets the speakers. You are actually going to need to measure the load of the speakers on the amp. If it ran too low of a load, meaning less than 4 ohms, there is a good possibility that the amp overheated and damaged some internal components due to not enough resistance. Some of their amps have internal fuses that can be replaced. It may be time to visit a diagnostic shop.
Sorry, but you have a problem. The amp is rated to 4 ohms per side. Your speakers would have to be 16 ohm type to allow 3 per side in parallel. The Bose ratings are usually consumer type ratings and they would have to be set to 200 watts each (twice the rating that the amp can produce per side) to be safe connected to that amp. Your speakers are likely 8 ohm so you could parallel ONLY two per side OR if they are 4 ohm, then you would have to series them. You could series two or three per side safely for the amp. You don't tell us what model Bose speakers you have. Anyway, one has to first meet the specs of the amp and the speakers to avoid damage. It is likely the amp is too BIG for the speakers. For the setup of the mixer portion of this problem I want you to view videos on YouTube. Search for "mixer setup". Don't worry that they are different mixers than yours... there is enough commonality and the functions are nearly the same for MOST analog mixers. Recommendation: forget about two of the speakers... keep them as spares and run low volume to avoid blowing the speakers. I can't imagine any competent audio equipment supplier configuring your system this way.
check that load with an ohm meter. a 1 ohm load is very low and just the wires would increase the load. also as speakers age they can go lower on the actual ohm being used so even if the circuit would seem to add up to one ohm it may be even lower. If the amp is going to protect mode the load is just to great and it doesn't want to burn itself up. a good meter will tell you the real ohm load at the amp. make sure you get a good connection between the meter and the load. don't overload the amp it is not safe. also some speakers are "power hungry" or less effective at using the amps watts of power
Placing the speakers next to each other face down, you will notice that the connection points run in sequence +- and +-. Now connect the - (negative) from the one speaker, to the + (positive) of the other speaker. Now connect the open + from the one speaker and the open - from the other speaker to your amp. Your amp should have a bridging indication. On the connection points of the amp, you should see a mark pointing to the first + and the last -. That will be your bridge and thus utilizing the full potential of your amplifier