DVC parallel wiring louder than series wiring?

[Beatin' 10+ year member]

Check this out.



Dude says that parallel wiring the coils in a DVC can get you a decibel louder than wiring in series.

discuss......

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[BrownVanMan 10+ year member]

I understand the math behind it, would be interesting to try it real world

 

[bubbagumper6 5,000+ posts]

I call BS. Same final impedance = same result electrically.

 

[Jepalan]

OK, so the author of the video claims to get a slight increase in SPL when running a parallel DVC sub versus a series DVC sub wired to the *same final load impedance*.

There are a number of things that *might* be coming into play here.

1) The load impedance seen by the amp is not purely resistive. The actual impedance is a combination of series resistance of the voice coils, inductance of the voice coils and capacitance of the windings. So it is unlikely the amp is seeing the *exact* same reactive load in the two tests.

2) The amp may be better matched to the total reactive impedance presented by the parallel sub at the frequencies under test versus the other sub, therefore it can transfer more power to the load.

3) It is 1dB. Who cares?

 

[1.21 jiggawatts]

im pretty sure Bl increases when you wire in series. so he might be getting a gain from that

 

[hispls 5,000+ posts]

The guy cited 2 instances where changing coils gained him 1dB. Consider that they were NOT identical coils if they were different impedance. Also consider if he just puts on fresh recones right before his 1dB gain it could easily be fresh/stiff suspension helping his impedance favorably.

Apart from the obvious halving impedance on a high current amp helps, I wouldn't put too much stock into this theory without a lot more hard data to support it. The only legitimate way to do this would be to use the SAME coil wired to 1 ohm and 4 ohm and use a scope to make sure POWER is identical and meter both ways. Once you change the coil and softparts all bets are off as to where the gains came from.

 

[Beatin' 10+ year member]

It is 1dB. Who cares?

I think that's about 33% increase. Yeah I care about that, seriously.

 

[hispls 5,000+ posts]

I think that's about 33% increase. Yeah I care about that' date=' seriously.[/quote']
Once you're actually loud, 1dB is indeed very big.

 

[Beatin' 10+ year member]

Once you're actually loud, 1dB is indeed very big.

That's the thing. I know I'm not loud. So 1dB seems like a big deal to me. I'll take what I can get.