Ohms?

Posted: Sat Mar 31, 2007 8:56 pm

Will I have any problems if I connect a 4 ohms speakers like the JBL Control 1 to a receiver that is rated 8 ohms or higher only? If I will get problems what should I do so I can somehow play the speakers without problems?

Posted: Sat Mar 31, 2007 10:37 pm

If your amp is not rated for 4 ohms, do not risk it.

Posted: Sun Apr 01, 2007 2:42 am

Yep you will have a problem. Thats doubling the load on your amplifier. Not a good Idea. Could be a nice way to make that burning electronics smell though.

Posted: Sun Apr 01, 2007 10:43 am

I found a speakers that is very very similar and it's called the JBL Control 1Xtreme and it uses the same size enclosures and woofers size and tweeters etc. The Xtreme is 8 ohms rated so what I was thinking to do is swich the crossovers so then the orginal Control 1 will be 8 ohms. Do you think this is a good idea since then it will be rated 8 ohms. Just to let you know everything will fit in both speakers since they are same cabinets.

Posted: Sun Apr 01, 2007 10:45 am

Link555 wrote:

Yep you will have a problem. Thats doubling the load on your amplifier. Not a good Idea. Could be a nice way to make that burning electronics smell though.

My receiver does have a overload protection built inside the amp so it it overloads it will shut off and turn back on safely. But do you guys still think I should not use the 4 ohms speakers?

Posted: Sun Apr 01, 2007 10:53 am

No. If your amplifier was designed to be an 8 ohm amp, then that is what you have. If it were designed for multiple loads, they would have specified and tested it at UL, etc.

An 8 ohm speaker does not always present a linear 8 ohm load throughout the spectrum. Sometimes it is lower, sometimes higher. So why push this and endanger yourself and you amp with a 4 ohm speaker, by making it do what it was not designed to do?

Posted: Sun Apr 01, 2007 11:13 am

sheet wrote:

No. If your amplifier was designed to be an 8 ohm amp, then that is what you have. If it were designed for multiple loads, they would have specified and tested it at UL, etc.

An 8 ohm speaker does not always present a linear 8 ohm load throughout the spectrum. Sometimes it is lower, sometimes higher. So why push this and endanger yourself and you amp with a 4 ohm speaker, by making it do what it was not designed to do?

Well will it just damage the receiver if I connect the 4 ohms speakers to it or can it do any damage to the speakers too? Or is it likly only the amp will get damaged?

Posted: Sun Apr 01, 2007 11:50 am

Who knows?

Sending a distorted signal to a speaker will not blow it. Under powering a speaker will not blow it. A combination of those two may or may not do anything. But should your amp crap out and shoot straight DC to the speakers....you would have a problem.

Is this the only option for you or something?

Posted: Sun Apr 01, 2007 2:16 pm

Well if I could I would like to be able to use the JBL Control 1 for music listening and as PC speakers but since my receiver is 8 ohms or higher rated I was seeing if there is a way I can somehow make it work without damaging the amp or the speakers.

Posted: Sun Apr 01, 2007 2:25 pm

Here's the speakers I want to use.

http://www.jblpro.com/pub/install/control/ctrl1.pdf

Posted: Sun Apr 01, 2007 2:28 pm

Here's the speakers that is very very similar as the orginal one and it's the Control 1Xtreme.

http://www.jbl.com/home/products/product_detail.aspx?prod=CONTROL1XTREME&Language=ENG&Country=US&Region=USA&cat=BFS&ser=COS

Posted: Sun Apr 01, 2007 2:32 pm

I talked to the JBL tech guys and they said the size and everything is the same as the orginal one but just measued differently that's why one says it's 4in and one says 5in woofers etc.

Posted: Sun Apr 01, 2007 3:19 pm

Ahhhh. Now we get the facts. Those ARE two different speakers. Go to www.jblpro.com and then www.jbl.com/home and see the facts for yourself. You CAN use the 1Xtremes, because they are 8 ohms.

BTW:

JBL Professional Control 1 Pro is 150W, 4 ohms, 87dB SPL, 1W/1M.
JBL Consumer Control 1Xtreme is 80W, 8 ohms, 89dB SPL, 1W/iM

Posted: Sun Apr 01, 2007 3:36 pm

Well it's 150 peak power for the Control 1 pro. So music power is acualy the same as the Xtremes. What I see the biggest difference in the two is one uses titanium-laminted dome tweeters and one uses Polycarbonated dome tweeters. But other than that I think they are same speakers. But I was thinking that I could just swap the crossovers on the Xtremes and the Control 1 then the Control 1 will be 8 ohms rated. Do you think that's a good idea? They are same size and they will fit perfectly on both.

Posted: Sun Apr 01, 2007 4:20 pm

i would'nt simply swap the X'over... curious though.. the amp is rated at no less than 8ohm's??? most solid state amps are'nt too particular about that so the facxt that the manufacture is worried about it would be a cause for concern.... indicates a shitty power supply (lack of current) i take it you already own the amp???? what is it???

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