Why do 800D need so much current?

[wettou]

I don't think I would spend 1000 a foot..........lol......

Neither did I

[Glen B]

Glen B sorry to take you back down high school.......Oh what good days.....I wasn't even going into phase angles or anything of that nature. I was simply explaining the basic concept behind a speaker, and how current is effective.

Also I have to dissagree. You canot make a 8 ohm speaker magically become a 4 ohm speaker....Your not adding impedance to the speaker.....Your merely taking of the voltage.

Some people say that when an amplifier is bridged onto a 8 ohm load, it 'sees' a 4 ohm load. While it is true that the same current flows whether the amp is bridged on a 8 ohm load or a 4 ohm stereo load, the amplifier is driving a 8 ohm load across its outputs. A single 8 ohm speaker can never be a 4 ohm load.

You were explaining the basic concept behind a speaker, and that's fine, but IMO did not answer the original question. I did not say that an 8 ohm speaker magically becomes an 4 ohm speaker. I was only making a caveat that some amplifiers when bridged will not safely drive loads of less than 8 ohms. This also includes so-called "8 ohm" loads that dip well below 4 ohms for a significant portion of their frequency range, in regions where there is a lot of musical content, and worse, present a severe phase angle (like B&W 800Ds). Such "8 ohm" speakers should be treated like they were 4 ohms. That is not magic, but fact as borne out by the impedance plot, and IMO a sensible approach.

[wettou]

You were explaining the basic concept behind a speaker, and that's fine, but IMO did not answer the original question. I did not say that an 8 ohm speaker magically becomes an 4 ohm speaker. I was only making a caveat that some amplifiers when bridged will not safely drive loads of less than 8 ohms. This also includes so-called "8 ohm" loads that dip well below 4 ohms for a significant portion of their frequency range, in regions where there is a lot of musical content, and worse, present a severe phase angle (like B&W 800Ds). Such "8 ohm" speakers should be treated like they were 4 ohms. That is not magic, but fact as borne out by the impedance plot, and IMO a sensible approach.

So is B&W misleading their customers?

Therefore my 370W amps at 4Ω should be good to go

[ryan.devry]

I realize the dip in ohms.....the 8 ohm is nominal.....thanks

The question was originally about current. So, I explained the basics behind current and the electromagnet........I appreciate the debate tho....

[stuofsci02]

So is B&W misleading their customers?

Therefore my 370W amps at 4Ω should be good to go

Nah.. I don't think they are misleading.. All speakers have different resitances at different frequencies..

Is 370watts enough at 4 ohms? That depends.. 370 watts will make your speakers go very very very very loud... That does't mean it will sound good..

[wettou]

Nah.. I don't think they are misleading.. All speakers have different resitances at different frequencies..

Is 370watts enough at 4 ohms? That depends.. 370 watts will make your speakers go very very very very loud... That does't mean it will sound good..

Classé should do well I hope

[stuofsci02]

Classé should do well I hope

I would definately think so.. Sounds like a CA-2200?

[wettou]

I would definately think so.. Sounds like a CA-2200?

CA-5200 I am itching to get monoblocks, like CT-600M

[beden1]

CA-5200 I am itching to get monoblocks, like CT-600M

I don't remember all of the CT amps that Classe now makes. Do they make a 3 channel amp?

[stuofsci02]

I don't remember all of the CT amps that Classe now makes. Do they make a 3 channel amp?

Nope but the have a 5 channel amp..

[wettou]

I don't remember all of the CT amps that Classe now makes. Do they make a 3 channel amp?

I wished?