different length of cables, what can happen?

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bron

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What problems might occur when the cables to my loudspeakers arent exactly of the same length? ....or if they have a completly different length; like 2meters difference ?

Greetings
 
It's best to cut your speaker wires to the same length even if one speaker is closer to the amp. 2 meters is not a big deal though.
 
Beck said:
2 meters is not a big deal though.

thats good news. Because I have VERY serious problems with Loudspeakers and my Amp. It is a Yamaha RX-496rds, and I've already destroyed like 3 tweeters, and I really dont know why.
The Vloume Levels are well within normal levels, and I never heard any crackling sounds BEFORE the got broken. So I dont assume that the Amp was too 'strong' for the Boxes.
Theres only one thing. I heard that it may also be harmful to Loudspeakers if the amp is too weak, for the cabinets.
Can anyone help me with that?

Greetings
 
I heard that it may also be harmful to Loudspeakers if the amp is too weak, for the cabinets.
This is perfectly true. I don't know (forgotten) the science but if you have to push your amp to extremes to drive the speakers to achieve any reasonable level, then the amp distorts sending square waves to the speakers which they do not like, big time. This my recollection, but maybe someone who has a handle on the electronics can explain better.

edit: as to cable lengths, the shorter the better, but uneven lengths won't cause any "problems".
 
bron said:
thats good news. Because I have VERY serious problems with Loudspeakers and my Amp. It is a Yamaha RX-496rds, and I've already destroyed like 3 tweeters, and I really dont know why.
The Vloume Levels are well within normal levels, and I never heard any crackling sounds BEFORE the got broken. So I dont assume that the Amp was too 'strong' for the Boxes.
Theres only one thing. I heard that it may also be harmful to Loudspeakers if the amp is too weak, for the cabinets.
Can anyone help me with that?

Greetings

You have better than 100 watts per channel on that Yamaha receiver. What kind of speakers is it blowing?

Transients during power up can also kill tweeters, but most modern amps have buffering to control that.
 
having an amplifier that is not powerful enough to drive a cabinet is worse than overpowering it. By overdriving the amps capabilities you are inducing distortion to the speakers(bad) . You should check your crossovers for bad caps, coils, inductors. Also if you are blowing tweeters try putting a bulb fuse in line with the forward cone movement for protection.
 
Speed of voltage propagation in copper: 224,844 km/sec.

Distance: 2m

Time: 1/112,422,000 of a second.

Half wave phase cancellation frequency: ~56 MHz.

You won't notice a thing. :D
 
Beck said:
You have better than 100 watts per channel on that Yamaha receiver. What kind of speakers is it blowing?

Transients during power up can also kill tweeters, but most modern amps have buffering to control that.


what about these short crackling sounds, produced by jacks that are plugged in? ...it happend to me some times. :(
I cant say that the damaged noise of the tweeters started right after such an event, but can these sounds leave a damage, that gets worse and louder by the time?
Or sudden sounds, if for example, you enter a website with an embedded music player(I hate these!) starts to come up with sounds?
 
bron said:
what about these short crackling sounds, produced by jacks that are plugged in? ...it happend to me some times. :(
I cant say that the damaged noise of the tweeters started right after such an event, but can these sounds leave a damage, that gets worse and louder by the time?

Repeated HF pulses can wear out a tweeter over time, sure.

It sounds like you are pushing something too hard, that's for sure. If you haven't been hearing distortion from the speakers being overdriven, I'd guess the amp is being pushed.

What gauge speaker wire are you using? And if you can, find out the speaker specs and put them up.
 
boingoman said:
Repeated HF pulses can wear out a tweeter over time, sure.

It sounds like you are pushing something too hard, that's for sure. If you haven't been hearing distortion from the speakers being overdriven, I'd guess the amp is being pushed.

What gauge speaker wire are you using? And if you can, find out the speaker specs and put them up.

I guess it something around 0,3 centimetres
Is that too small :confused:
 
boingoman said:
At 4ohms. At 8ohms, that means 50W or less.

Right you are... they aren't 100 watt anyway, but the 496 is 75 watt minimum RMS per channel @ 8 ohms.

We really need to know the monitor speaker specs to have a complete picture of the system.
 
Beck said:
Right you are... they aren't 100 watt anyway, but the 496 is 75 watt minimum RMS per channel @ 8 ohms.
We really need to know the monitor speaker specs to have a complete picture of the system.

Right now, I'm using the Pioneer CS-969 Loudspeakers.
 
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