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View Full Version : bi-amping Vs. normal use



shibby15
07-23-2005, 01:23 PM
I'm currently pretty fixated on buying alpine type-x 6.5" component set. My question is:
I've noticed they can be bi-amped throw the cross over.
What does that mean? Do I need to cross them my self or are they still being crossed passively?
Is 50*2 per side good?
And what do I gain from bi amping apposed to lets say giving each side 75-80RMS in normal use?

thanks in advence :)

squeak9798
07-23-2005, 03:15 PM
Bi-amping is where you power each speaker (mid and tweeter) independently, with each speaker on their own amplifier channel but still running through the passive crossover. So, instead of having a single input on each passive crossover; you would have two inputs. And no, you don't need to cross them over yourself. The passive crossover will still do the frequency splitting. In your situation, to bi-amp you would need 4 channels of amplification rather than only 2 channels.

50w x 2 may be good depending on what you are wanting out of the system.

Bi-amping would give you more flexibility. You could, for example, use more power on the mids than on the tweeters (say, a 100w x 2 amp for the mids, and a 50w x 2 amp for the tweeters). And you could use the gains to level match the speakers better. Plus, depending on the crossovers on the amplifier, you could do some additional crossover tweaking by using the amplifier's built in crossovers.

shibby15
07-24-2005, 04:18 AM
the only thing that makes my not shure is the RMS ratings.
woofer at 40 and tweter at 25.
i dont know if i can get the amp to do 25 (its rated at 50*4).

squeak9798
07-24-2005, 12:27 PM
Is the tweeter 4ohm or 8ohm?

shibby15
07-24-2005, 01:57 PM
its 4 ohm...
and so is the woofer.

johnecon2001
07-24-2005, 03:02 PM
Just keep the gains low on the tweeter side. You'll be fine.

hellbender
07-25-2005, 08:32 PM
I had a question pertaining to this thread...is it possible when bi-amping to just wire your components in parallel to a 2 ohm load? If so what is the best way to do this? I have A/D/S components that are bi-ampable. My jbl amp pus out 123 watts rms per channel and my speakers are rated at 150 watts rms. by dropping them to a 2 ohm load they would see 169 watts rms. Is it worth going to a lower ohm for more power? thanks,

squeak9798
07-25-2005, 09:48 PM
I presume you mean wire each side's speaker's in parallel (i.e. Right mid and tweet in parallel to one channel, Left mid & tweet paralleled to the other channel). If so.......I do not believe you wouldn't gain anything. Since the drivers would be in parallel, they would "share" the power (just like wiring two subs in parallel)......

OlogyAudio
07-25-2005, 10:27 PM
I had a question pertaining to this thread...is it possible when bi-amping to just wire your components in parallel to a 2 ohm load? If so what is the best way to do this? I have A/D/S components that are bi-ampable. My jbl amp pus out 123 watts rms per channel and my speakers are rated at 150 watts rms. by dropping them to a 2 ohm load they would see 169 watts rms. Is it worth going to a lower ohm for more power? thanks,
if you had 2 pairs of component sets that were 4 ohms you would end up with a system of 2 ohm nature...

if you have a 4ohm midwoofer and a 4 ohm tweeter.... with an xover -- in parallel... it acts at one 4 ohm speaker and funny stuff happens arround the xover frequency depending on how crappy/good the design of the xover is...

hellbender
07-26-2005, 12:34 AM
ok, i understand that. thanks for your input guys....