impedence question - DVDfile.com forum for DVD, Blu-Ray, and HD-DVD

brian1234 · 11-15-2001, 04:17 AM

i have a pioneer vsx-d810s reciever,and in the manual it says to hook up speakers with an impedence of 8 to 16 ohms. I have two paradyme floor speaker with an impedence of 4/8ohms, they have two terminals on the back of each (one for highs one for lows), so my guess is when those are bridged they are four ohms, and when they are each hooked up seperately they are eight? so will hooking them up in 4 ohms to my receiver ruin it? and how do i hook them up in 8 ohms then, to one reciever? is that possible?

***Chromy*** · 11-15-2001, 05:27 AM

What Paradigm speakers are these... how did you arrive at the 4ohm rating?

To sort of answer your question...
A crossover effectivly raises impedence at certain frequencies (for example... over 400, over 10,000 and below 400) that causes them to suck less power, thus play quieter... Impedence is variable at different frequencies. So a 4 ohm speaker is not really a 4 ohm speaker at all frequencies. Most mass manufactured speakers are safe to drive with mass manufactured receivers. I'm guessing that the 4 ohms mentioned are the "nominal" rating, meaning that 4 ohms is the lowest that the speakers will drop at frequencies inside of the 20-20,000 Hz audio spectrum.

Chromy

brian1234 · 11-15-2001, 05:39 AM

Chromy, they are Paradyme DIGITAL3810SL, check the other post called Paradyme Digital Audio 2002 for more info on them that i posted, i hope this will help you in helping me, and on the box it says: Nominal Impedence 4-8ohms.
I don't know much about home audio speakers, but i know a little about car stereos, and so i figured, depending on the number of speakers you have hooked up, it would raise/lower the impedence, and since these have the two terminals on the back, i assume one for the mid/high range speakers and one for the two 8" drivers, when you have the terminals bridged the impedence goes down, because of more speakers hooked up to one thing, and when you take the bridge off, and hook them up separately (i guess to different amps?) the impedence would go up? i could be completely wrong, this is why i am asking for help

[This message has been edited by brian1234 (edited 11-14-2001).]

***chlngr1970*** · 11-15-2001, 07:44 AM

the two terminals on the back of your speekers are for Bi-Wiring/Bi-Amping. Some receivers have the capability of running separate cables for the lows, and Mids/highs, as you noted earlier. some would say this brings speakers to life. I have never heard the difference, so I cannot vouch for that. I am going to try it as soon as I get a pair of the B&W speakers in my setup tho...

so...if you have a receiver that can do Bi-wiring...give it a shot...if not...leave the bridge bars in there...

hope this helps...

j

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***Chromy*** · 11-16-2001, 04:45 AM

Yep, so that nominal is the key... you'll probably be fine running them off of your receiver. Check the receiver when driving these speakers and make sure that it's not heating up too much. When being driven from one channel, each speakers resistance will not be any different when running two wires, or just leaving the jumper bridge connecting the two posts.

nominal 4 - 8 usually means that it'll dip down to 4 at one point, but is safe for amps rated at 8 ohms.

Chromy

11-15-2001, 04:17 AM	#1 (permalink)
brian1234 Actor Join Date: Oct 2001 Location: Austin	impedence question i have a pioneer vsx-d810s reciever,and in the manual it says to hook up speakers with an impedence of 8 to 16 ohms. I have two paradyme floor speaker with an impedence of 4/8ohms, they have two terminals on the back of each (one for highs one for lows), so my guess is when those are bridged they are four ohms, and when they are each hooked up seperately they are eight? so will hooking them up in 4 ohms to my receiver ruin it? and how do i hook them up in 8 ohms then, to one reciever? is that possible?

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11-15-2001, 05:27 AM	#2 (permalink)
*Chromy* Producer/Admin Coffee Boy Join Date: Dec 2001 Location: Greater Seattle Area, WA	What Paradigm speakers are these... how did you arrive at the 4ohm rating? To sort of answer your question... A crossover effectivly raises impedence at certain frequencies (for example... over 400, over 10,000 and below 400) that causes them to suck less power, thus play quieter... Impedence is variable at different frequencies. So a 4 ohm speaker is not really a 4 ohm speaker at all frequencies. Most mass manufactured speakers are safe to drive with mass manufactured receivers. I'm guessing that the 4 ohms mentioned are the "nominal" rating, meaning that 4 ohms is the lowest that the speakers will drop at frequencies inside of the 20-20,000 Hz audio spectrum. Chromy

11-15-2001, 05:39 AM	#3 (permalink)
brian1234 Actor Join Date: Oct 2001 Location: Austin	Chromy, they are Paradyme DIGITAL3810SL, check the other post called Paradyme Digital Audio 2002 for more info on them that i posted, i hope this will help you in helping me, and on the box it says: Nominal Impedence 4-8ohms. I don't know much about home audio speakers, but i know a little about car stereos, and so i figured, depending on the number of speakers you have hooked up, it would raise/lower the impedence, and since these have the two terminals on the back, i assume one for the mid/high range speakers and one for the two 8" drivers, when you have the terminals bridged the impedence goes down, because of more speakers hooked up to one thing, and when you take the bridge off, and hook them up separately (i guess to different amps?) the impedence would go up? i could be completely wrong, this is why i am asking for help [This message has been edited by brian1234 (edited 11-14-2001).]

11-15-2001, 07:44 AM	#4 (permalink)
*chlngr1970* Producer/Admin Tenacious "OB" Join Date: Jun 2000 Location: Spanaway Washington	the two terminals on the back of your speekers are for Bi-Wiring/Bi-Amping. Some receivers have the capability of running separate cables for the lows, and Mids/highs, as you noted earlier. some would say this brings speakers to life. I have never heard the difference, so I cannot vouch for that. I am going to try it as soon as I get a pair of the B&W speakers in my setup tho... so...if you have a receiver that can do Bi-wiring...give it a shot...if not...leave the bridge bars in there... hope this helps... j ------------------ Co-Moderator Software Forum Was it a dream where you see yourself standing in sort of sun-god robes on a pyramid, with a thousand naked women screaming and throwing little pickles at you?

11-16-2001, 04:45 AM	#5 (permalink)
*Chromy* Producer/Admin Coffee Boy Join Date: Dec 2001 Location: Greater Seattle Area, WA	Yep, so that nominal is the key... you'll probably be fine running them off of your receiver. Check the receiver when driving these speakers and make sure that it's not heating up too much. When being driven from one channel, each speakers resistance will not be any different when running two wires, or just leaving the jumper bridge connecting the two posts. nominal 4 - 8 usually means that it'll dip down to 4 at one point, but is safe for amps rated at 8 ohms. Chromy