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Thread: 4 ohm v's 8 ohm |
    
New member Username: Slickmick
Post Number: 2
Registered: Jan-07
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| Posted on Friday, January 05, 2007 - 11:30 pm: |
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I am trying to see if I will cause damage to anything running 2 x 4ohm speakers powered by a home stereo. I have fitted my eaves on my house with car speakers. 2 speakers are connected together running from the same wire. Left balance will power one set and right balance will power the other set of two.
Thankyou |
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Gold Member Username: Nuck
Post Number: 5156
Registered: Dec-04
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| Posted on Saturday, January 06, 2007 - 08:06 am: |
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Yes you will cause damage. |
Platinum Member Username: Project6
Post Number: 12251
Registered: Dec-03
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| Posted on Saturday, January 06, 2007 - 10:59 am: |
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Connect them to get an 8 ohm load. |
Gold Member Username: Jan_b_vigne
Dallas,
TX
Post Number: 9584
Registered: May-04
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| Posted on Saturday, January 06, 2007 - 12:37 pm: |
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I have to say it seems less than the brightest idea to make the hook up and then ask if it will damage the receiver. I almost feel the op powered up the system and after a good blast of music no sound comes out, so, the question is now, "Can I damage this?"
Sorry if that seems harsh, MP, but there are protocols for making connections with audio equipment. The first is, know what you're doing. You don't seem to fit that rule.
You don't say what amplifier you are using but we can only assume that your system probably shouldn't be driving a four Ohm load. Make the connection from speaker to speaker by way of a series connection and you will raise the overall impedance to a level where it should be safe for almost any amplifier.
If you don't know the difference between a series and a parallel connection, place one or the other in a search engine and read what you find. With any luck you might have accidentally made a series connection and everything will be fine. But, if you made a parallel connection, I wouldn't turn anything on just yet.
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New member Username: Slickmick
Post Number: 3
Registered: Jan-07
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| Posted on Saturday, January 06, 2007 - 09:25 pm: |
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Thankyou for the Responses. Harsh...mmm maybe so. As for knowing anything about this stuff. Yes you are right, I have no knowledge and don't claim to have any. If if wasn't for a salesman in the local shop explaining 4 ohms vs 8ohms I would not have posted the question. Anyway, thankyou fot the response and I will search and hopefully be able to complete the series connection. Thnkyou again for the advice . MP |
Gold Member Username: Nuck
Post Number: 5180
Registered: Dec-04
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| Posted on Sunday, January 07, 2007 - 07:33 am: |
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Left channel. + from the receiver goes to + of speaker#1. - of speaker#1 goes to + of speaker#2. - of speaker #2 goes to - of receiver left channel.
Second verse same as the first. |
New member Username: Covenant
Post Number: 1
Registered: Feb-07
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| Posted on Friday, February 09, 2007 - 11:11 am: |
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Thanks to all for the posts ... I was going to ask the same thing. I have a stereo system that still suits my needs 37 years after I bought it ... a Pioneer 727 receiver with a pair of KLH 17s. Perhaps it has declined with age, but so has my hearing, so I don't notice! 
Someone has given me a pair of KLH 19s, which I thought I might wire through the floor into my workshop ... of course they are 4 ohms, so I'll see if I can pick up an identical pair and wire 2 of them in series for each channel.
Thanks again for all the input here.
Blessings! |
Gold Member Username: Jan_b_vigne
Dallas,
TX
Post Number: 9743
Registered: May-04
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| Posted on Friday, February 09, 2007 - 01:03 pm: |
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The speakers do not have to be identical to make a series or parallel connection. Whichever speakers you choose, you simply double impedance at any frequency for a series connection and halve the lowest impedance for a parallel connection. Series will always double the impedance. Parallel will not be exactly half and typically falls somehwat lower but multiplying by 0.5 is close enough for your needs.
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