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JBL 4312m from Japan

W

WolfsDogs

New Member
I currently have a pair of JBL 4312m speakers and this is not the mark II version it's the original one and I was wondering since just want to make sure about this but I been for 3 years connecting them to a Sony STR-DH130 stereo receiver and using them as PC speakers and they been working fine but I just noticed that this receiver says its for 8 ohms or higher and these JBL' s are rated 4 ohms and 75 watts rms but is it totally ok to keep using it on this receiver? I haven't had any problems or anything but I did talk to Best Buy home theater guys and they said I won't have any problems he said he would only worry if the receiver was 4 ohms and connecting them to a 8 ohms or higher but having a pair of 4 ohms on this Sony receiver won't harm it at all but is that true? Just wondered if people here know more about audios than him. But he maybe right since he seemed like his knew what he was talking about.


Thanks
 
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Oh ok well how loud can I have the speakers at though? I have a 100 watt receiver but it said on specs that is was 135 watts but I don't know if that's true. But If the speakers are 75 watts rms how loud can I have it at? Also I remember he said that since the receiver is a lot more powerful it won't stress the amp at all. Also most of the time there is like maybe around 200 watts peak power so even at 75 watts it wont blow them. But can the receiver get stressed even if it's capable of more watts than the speakers? Also is it possible that these JBL speakers can somehow even work on 8 ohms since it's higher end ones? Someone also said that maybe my speakers are made to work for both 4 and 8 ohms but I don't know. All I know is that for years I never had problems but I just don't know how loud I can have my speakers.

I also don't quite understand what they are saying on the link you showed me.


Or do you mean like it has to be soo soft that I can't hear my music much? If so I had it up louder than that in the past but I just don't know how low is too loud. Thanks
 
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It looks like your speakers are rated for sensitivity at 89db measured at 1 meter with 1watt of power.

Every 3db more requires double the amount of power. So,

1 watt = 89 Decibels, which is pretty loud if you are sitting 3 feet/1 meter away from them.

How loud can they go?
1 watt = 89db
2 watt = 92db
4 watt = 95db
8 watt = 98db
16 watt = 101db
32 watt = 105db
64 watt = 108db

108 decibels is going to damage your hearing rather quickly. If you have a smart phone, install a free decibel meter app, that will give you an idea how much power you are actually using. Remember that distance uses up some of the sound your speakers are producing, so if you are farther away, you will be using more power than if you are close to the speakers.

Most listening is done at 1 watt or less, so it really should be fine. If you like to rock the house, then you should worry.

I don't understand all the technicalities of it either, but I do understand that if the amp is not made to handle 4 ohm loads then it is seriously stressed by them, exponentially so at higher levels.
 
Well I do have the speakers close to me like maybe they are around 3 feet away I think since they are placed top part of my computer desk. But if I lets say listen to up to 4 watts is that too much? I might sometimes have them up loud when I want to enjoy my music but since they are close to me I don't have to turn them super loud. Plus my bedroom isn't that big it's a small sized bedroom. I don't have a smartphone since my cell is a pre paid go phone like phone and it uses min up. It's a basic small touch phone and nothing special. I use my landline to talk the most since it has free long distance and international calls also. I use Vonage. I live with my mom and my basement is like my whole area.
 
Rule of thumb - if it sounds good (clear), the speakers will be OK. Distortion kills.

Another rule of thumb - If your ears are ringing after listening to tunes...it is too loud.
 
I wouldn't sweat it, personally. As long as you don't keep it cranked up for long periods, it should be OK.
 
Yes when ever I have my music loud it does sound clear and no distortion and my ears don't ring at all so I must be not listening it too loud then so that's good. Ya I don't listen them that loud like a DJ would or when they play music at the bars since some of those places have there music way too loud and there speakers distorting. All though I don't go to the bars but but I remember when I went to the Run in Omaha back in around 2006 they had there music soo loud that the speakers were like noise. Also there Yamaha 18in subwoofer was really loud. But seems like bass doesn't hurt my ears at all though more of mids and highs does. So I guess I must be not listening too loud even I think they are loud but not loud like any concerts or DJ party.


But my question is that even if I don't listen that loud as like DJs or so can you shorten the life of the Sony receiver? Or I am totally safe? Or does it not affect it at all unless you have it super loud for long time like DJ loud? Thank you
 
Your best bet is to either find the exact specifications of the JBL speaker system or measure the resistance at the terminals. I believe you are stressing about something that doesn't exist. Even if the JBL 4312m offered a presentation of 4 ohms to your Sony receiver, without cranking that volume knob to "8", continually, you won't harm anything.
 
Well you may be right I' am thinking too much and I do that often since I have very strong OCD. I guess I just know now it's totally ok and don't have to worry. :)
 
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