Newbie Speakers

doomsweek · 6th May 2005, 02:03 PM

I have 2 Speakers here from a National Radio. It has an impedance of 8 ohms and a Peak Input of 165W. What does that two values mean?

Cal Weldon · 6th May 2005, 02:50 PM

The impedance is a measure of the electrical resistance (mostly) and the peak input indicates what power level can be applied to the speakers. Peak is poor way of rating it. Realistically if they are rated at 165W peak the actual power rating in RMS (root, mean, squared) will be about half that or less. (read 75watts)

Cal

doomsweek · 6th May 2005, 10:06 PM

If i plug this thing to a 100RMS Amp? What will happen?
If i plug this to an amp with >170W ?

Cal Weldon · 6th May 2005, 10:25 PM

Without getting too involved here:

The 8 ohm speakers will be fine with almost any amplifier.

The wattage rating is fine for either amp provided you do not turn it up too loud. The 100 watt amp can still blow your speakers just like the 170 watt can. Just use your better judgement when it comes to the volume.

Cal

doomsweek · 8th May 2005, 02:16 AM

Oh.. it's 6 ohms. Not 8 ohms. Typo.

Can anyone tell what this values are/for?

Channels per transformer
Rail voltage
Power in Watts
Transformer voltage VCT
Load in Ohms
Minimum VA
R2R in Volts

doomsweek · 8th May 2005, 03:59 PM

Can anyone give my and circuit for an amp that is easy to build and cheap but still sounds good.

Cal Weldon · 8th May 2005, 04:03 PM

You've gone form asking about speaker impedance to wanting to build your own amplifier in two days.

You have done a lot of reading it appears.

Cal

6th May 2005, 02:03 PM	#1
doomsweek diyAudio Member Join Date: Nov 2004 Location: Cebu, Philippines	Newbie Speakers I have 2 Speakers here from a National Radio. It has an impedance of 8 ohms and a Peak Input of 165W. What does that two values mean? __________________ ...?

6th May 2005, 02:50 PM	#2
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	The impedance is a measure of the electrical resistance (mostly) and the peak input indicates what power level can be applied to the speakers. Peak is poor way of rating it. Realistically if they are rated at 165W peak the actual power rating in RMS (root, mean, squared) will be about half that or less. (read 75watts) Cal __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

6th May 2005, 10:06 PM	#3
doomsweek diyAudio Member Join Date: Nov 2004 Location: Cebu, Philippines	If i plug this thing to a 100RMS Amp? What will happen? If i plug this to an amp with >170W ? __________________ ...?

6th May 2005, 10:25 PM	#4
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Without getting too involved here: The 8 ohm speakers will be fine with almost any amplifier. The wattage rating is fine for either amp provided you do not turn it up too loud. The 100 watt amp can still blow your speakers just like the 170 watt can. Just use your better judgement when it comes to the volume. Cal __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

8th May 2005, 02:16 AM	#5
doomsweek diyAudio Member Join Date: Nov 2004 Location: Cebu, Philippines	Oh.. it's 6 ohms. Not 8 ohms. Typo. Can anyone tell what this values are/for? Channels per transformer Rail voltage Power in Watts Transformer voltage VCT Load in Ohms Minimum VA R2R in Volts __________________ ...?


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8th May 2005, 03:59 PM	#6
doomsweek diyAudio Member Join Date: Nov 2004 Location: Cebu, Philippines	Can anyone give my and circuit for an amp that is easy to build and cheap but still sounds good. __________________ ...?

8th May 2005, 04:03 PM	#7
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	You've gone form asking about speaker impedance to wanting to build your own amplifier in two days. You have done a lot of reading it appears. Cal __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

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