Question About 2.1 audio system

alexisk10 · 21st December 2010, 08:28 AM

Hello guys it's first post here and a have a question about 2.1 and 5.1 audio system.
Question: in 2.1 system and 5.1, we have an amplifier only for the woofer? the midrange and the tweeter are connected directly to the TV or PC?

Thank you
alexis

whgeiger · 21st December 2010, 05:26 PM

For a 2.1 system there are three channels carrying a unique audio signal. For a 5.1 system there are six.
Each channel requires a power amplifier (PA) to drive the loudspeaker connected to it. Also each power amplifier (PA) needs to be connected to a signal source for its assigned channel. Where these amplifiers are located (within or external to other system components) will determine the connections that need to be made.

Regards,
WHG

alexisk10 · 21st December 2010, 06:25 PM

thank you for the answer

alexisk10 · 1st February 2011, 11:20 PM

I would like to ask a question about the crossover frequency.

For example, if i have two loudspeakers, one tweeter ( Goldwood GT-510/S 1" Shielded Soft Dome Tweeter | Parts-Express.com ) Specifications: *Power handling: 50 watts RMS/100 watts max *VCdia: 1" *Impedance: 8 ohms *Fs: 1300 Hz * Frequency response: 3,000 - 20,000 Hz *SPL: 90 dB 1W/1m

and one woofer Specifications: *Power handling: 80 watts RMS/170 watts max *VCdia: 1" *Le: .40 mH *Impedance: 8 ohms *Re: 7.0 ohms *Frequency range: 35-5,000 Hz* *Fs: 55 Hz * SPL: 86 dB 1W/1m *Vas: .50 cu. ft. * Qms: 3.60 *Qes: 1.09 * Qts: .83 *Xmax: 2.5 mm

How can i determine the crossover frequency?

21st December 2010, 08:28 AM	#1
alexisk10 diyAudio Member Join Date: Mar 2010	Question About 2.1 audio system Hello guys it's first post here and a have a question about 2.1 and 5.1 audio system. Question: in 2.1 system and 5.1, we have an amplifier only for the woofer? the midrange and the tweeter are connected directly to the TV or PC? Thank you alexis

21st December 2010, 05:26 PM	#2
whgeiger diyAudio Member Join Date: May 2004 Location: Pensacola, Florida	Where Are the PAs? For a 2.1 system there are three channels carrying a unique audio signal. For a 5.1 system there are six. Each channel requires a power amplifier (PA) to drive the loudspeaker connected to it. Also each power amplifier (PA) needs to be connected to a signal source for its assigned channel. Where these amplifiers are located (within or external to other system components) will determine the connections that need to be made. Regards, WHG

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21st December 2010, 06:25 PM	#3
alexisk10 diyAudio Member Join Date: Mar 2010	thank you for the answer

1st February 2011, 11:20 PM	#4
alexisk10 diyAudio Member Join Date: Mar 2010	I would like to ask a question about the crossover frequency. For example, if i have two loudspeakers, one tweeter ( Goldwood GT-510/S 1" Shielded Soft Dome Tweeter \| Parts-Express.com ) Specifications: Power handling: 50 watts RMS/100 watts max VCdia: 1" Impedance: 8 ohms Fs: 1300 Hz * Frequency response: 3,000 - 20,000 Hz SPL: 90 dB 1W/1m and one woofer Specifications: Power handling: 80 watts RMS/170 watts max VCdia: 1" Le: .40 mH Impedance: 8 ohms Re: 7.0 ohms Frequency range: 35-5,000 Hz Fs: 55 Hz SPL: 86 dB 1W/1m Vas: .50 cu. ft. Qms: 3.60 Qes: 1.09 Qts: .83 *Xmax: 2.5 mm How can i determine the crossover frequency?

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