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Old 19th November 2009, 00:00   #226
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Default Another newbie question

Type: Analogue
Number of channels : 4 Channel
Max. Power (Watt): 1600
Max. Power 4 Channel @4 Ohm (Watt): 4x260 - What does this mean ?
Max. Power 2 Channel @4 Ohm (Watt): 2x800 - What does this mean ?
Max. Power 4 Channel @2 Ohm (Watt): 4x400 - What does this mean ?
RMS Power 4 Channel @4 Ohm (Watt): 4x130 - What does this mean ?
RMS Power 2 Channel @4 Ohm (Watt): 2x400 - What does this mean ?
RMS Power 4 Channel @2 Ohm (Watt): 4x200 - What does this mean ?

Can anyone give me a practical scenario example ?

E.g. I have 4 sony speakers ( 2 front and 2 back) and I connect my HU with this amplifier and the speakers to this amplifier. What output can the speakers draw - 260 / 400 / 200 ? What is the criteria of differentiation ? And how can I calculate that ?

Also how can I know that the amplifier with an o/p of 1600 watt will be supported by my HU ?
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Old 19th November 2009, 11:41   #227
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Quote:
Originally Posted by VictorSinha View Post
RMS Power 4 Channel @4 Ohm (Watt): 4x130 - What does this mean ?
RMS Power 2 Channel @4 Ohm (Watt): 2x400 - What does this mean ?
RMS Power 4 Channel @2 Ohm (Watt): 4x200 - What does this mean ?

E.g. I have 4 sony speakers ( 2 front and 2 back) and I connect my HU with this amplifier and the speakers to this amplifier. What output can the speakers draw - 260 / 400 / 200 ?
The specs above are the only specs that matter and they too are incomplete (the specs do not include distortion or frequency range).

100W at 10% distortion is very different from 100W at 0.1%, similarly 100W at 1kHz is very different from 100W at 20-20kHz.

As far as your Sony speakers are concerned if all 4 speakers are connected the amp will be capable of putting 4 x 130W (130W per speaker). The problem you might face is that the speakers might not be capable enough to handle 130W rms at 30Hz. But that is antoher story.
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Old 19th November 2009, 11:48   #228
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1. The 'Max. power' is the maximum power that the amp can push through the mentioned load before it dies of heat stroke

2. The 'RMS power' is the maximum power that the amp can push through the mentioned load at a certain distortion level (not mentioned in your post) before the distortion becomes unbearable both for you as well as the amp

3. The amp pushes current / power (the speaker is passive, it does not 'draw' power) corresponding to the signal level you set - effectively the volume you set at the HU

4. You can / must not calculate the 'criteria of differentiation' - these are only guidance figures. The actual power flowing depends on the signal conditions. Music becomes unbearably loud and distorted well before the maxima is reached

5. The amplifier hardly draws any power from the HU. The HU supplies a low voltage low power signal to the amp. Output power of the amp (1600W is the power beyond which the output devices are likely to fail in the example you have given) has nothing to do with the signal from the HU - amp does NOT load the HU
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Old 19th November 2009, 12:18   #229
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Quote:
Originally Posted by DerAlte View Post
The HU supplies a low voltage low power signal to the amp. Output power of the amp (1600W is the power beyond which the output devices are likely to fail in the example you have given) has nothing to do with the signal from the HU - amp does NOT load the HU
Or simply put, HU just gives the audio input -not even amplified - to the AMP, and no power.

AMP doesn't load the HU but it loads the battery/dynamo.
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Old 19th November 2009, 22:09   #230
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RMS Power 4 Channel @4 Ohm (Watt): 4x130

Here what is the meaning of 4 Ohm ?

Also how it is determined that

Max. Power 4 Channel @4 Ohm (Watt): 4x260
RMS Power 4 Channel @4 Ohm (Watt): 4x130

Max. Power 4 Channel @2 Ohm (Watt): 4x400
RMS Power 4 Channel @2 Ohm (Watt): 4x200

Which one of these is supplied ?
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Old 20th November 2009, 10:11   #231
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Quote:
Originally Posted by clevermax View Post
Or simply put, HU just gives the audio input -not even amplified - to the AMP, and no power..
that is exactly what DA (Der Alte) meant.

Quote:
Originally Posted by VictorSinha View Post
RMS Power 4 Channel @4 Ohm (Watt): 4x130
Which one of these is supplied ?
If you speakers are 4 ohms the amp will supply 130W per speaker (4 speakers). 4 ohms is the NOMINAL impedance of most car audio speakers. For a speakers which is rated NOMINAL 4 ohms the impedance (which is a combination of resistance and reactance) usually varies from as low as 2 ohms to as high as 50 ohms. The 50 ohms peak is quite narrow.
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Old 1st December 2009, 09:22   #232
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I found it is a good thread.The audio enthusiasts should use this forum for their product purchases and reviews. Let us learn the HU ICE products from this thread.
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Old 28th January 2010, 18:12   #233
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Default Fader/Balance

HI,
What is the use of the FAD/BAL option in a head unit. What is the ideal balance if the car is self driven.

Also what does R 2 R2 or L2 L2 or FR 3 R 0 mean in the settings.
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Old 28th January 2010, 20:20   #234
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Quote:
Originally Posted by funnyguru View Post
HI,
What is the use of the FAD/BAL option in a head unit. What is the ideal balance if the car is self driven.

Also what does R 2 R2 or L2 L2 or FR 3 R 0 mean in the settings.
Fader is for balacing sounds from front stage and rear stage

Balance, for Left and right sides of speakers

There is no Ideal setting for this. It depends on Users Equipment, Tastes and Sound Imaging.

I prefer Fader +3 setting simply becasue my mom who sits at the back always hits my head to reduce the volume.

Some may also have overpowering front stage or rear stage that you actually may use the fader to balance the sounds

Similarly the BAL option. Incase i am the only person driving, I want to ensure that sounds are at same level when i hear them. So if i reduce my rightside speakers to R-3 or so, the sounds seems more even

Shortly put the fader and balance options are nothing but Age-old form of a manual Time Alignment (Not Exactly, but sort of serves the same purpose)

Last edited by Mi10 : 28th January 2010 at 20:21.
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Old 28th January 2010, 21:42   #235
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Hi Mi10,
Ideally my HU has Fader and Balance as one. In that case how do I achieve. lets say Fader +3?.
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Old 30th January 2010, 23:46   #236
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My car is having only front speakers. So which is the best fader setting ?
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Old 31st January 2010, 01:03   #237
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Quote:
Originally Posted by mithun View Post
My car is having only front speakers. So which is the best fader setting ?
Does not make any difference the rear speakers are not there to cause any change.
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Old 31st January 2010, 09:09   #238
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Quote:
Originally Posted by navin View Post
Does not make any difference the rear speakers are not there to cause any change.
I think he was kidding
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Old 8th March 2010, 23:29   #239
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What are 2 component systems, 3 components systems etc.? What do they mean and do?

What does a crossover do and how is it connected? Any connection diagram? Also, I see some cars like frankmehta's where two identical crossovers can be seen. Why 2?

Can somebody or explain the connections done in such cars diagrammatically?

Last edited by abhipuru16 : 8th March 2010 at 23:38.
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Old 10th March 2010, 00:37   #240
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Wow! It took more than an hour to read the entire thread. Got a lot of info but have 2 questions as of now- 1. Why does frankmehta's car has 2 crossovers? 2. What do three way components look like?
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