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

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.

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.

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?

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?

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?

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?

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.

Here's the speakers I want to use.

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

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

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.

Ahhhh. Now we get the facts. Those ARE two different speakers. Go to http://www.jblpro.com and then http://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

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.

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???

Prideboy,

Changing the crossover will NOT change the overall speaker impedance. What it will do is mess up the crossover frequency so you would probably get a null or peak at the crossover frequency when using different impedance drivers than the crossover was designed for - the load and source impedance of any passive filter are an integral part of the filter design.

DEFINITELY NOT a good idea.

My reveicer is a Pioneer VSX-D308 Digital Signal Processor.

Here are some specs on my receiver.

http://www.pioneerelectronics.com/pna/product/detail/0,,2076_4153_36377_tab=B,00.html?compName=PNA_ProductDetailComponent&olderModel=Y

MrEase wrote: Prideboy,

Changing the crossover will NOT change the overall speaker impedance. What it will do is mess up the crossover frequency so you would probably get a null or peak at the crossover frequency when using different impedance drivers than the crossover was designed for - the load and source impedance of any passive filter are an integral part of the filter design.

DEFINITELY NOT a good idea.

Well the woofers and tweeters look exactly the same only difference is the tweeter has a thin coating of titanium. The woofers meteral and design looks same as the orginal too even the model number of the woofers is the same. I think the Xtremes and the orginal are same cones. I overall think these are almost the same speakers.

But if guys you really think I should not change anything then is there anyway I can use the orginal Control 1 using my Pioneer receiver?

PrideBoy wrote: [quote=MrEase]Prideboy,

Changing the crossover will NOT change the overall speaker impedance. What it will do is mess up the crossover frequency so you would probably get a null or peak at the crossover frequency when using different impedance drivers than the crossover was designed for - the load and source impedance of any passive filter are an integral part of the filter design.

DEFINITELY NOT a good idea.

Well the woofers and tweeters look exactly the same only difference is the tweeter has a thin coating of titanium. The woofers meteral and design looks same as the orginal too even the model number of the woofers is the same. I think the Xtremes and the orginal are same cones. I overall think these are almost the same speakers.

geeee... if only looks had ANYTHING to do with it.....

"Check the impedance of the speakers; make sure they are properly rated for your stereo. In most cases, they need to be 8 ohms. Only a few Pioneer receivers will support lower impedance."

that's from your link under FAQ's if the amp shuts down... do what you want but i'ld think real seriously about losing that thing.....YMMV

This has to be an April fools joke.

If you can afford to buy a pair of speakers and an additional pair of crossovers, then why not buy the right speakers to begin with?

No offense, but Control 1s aren't the best sounding things in the world. Why don't you buy something that is best suited for your application.

The power ratings on the Control 1 PRO is 150W continous, full bandwidth, peak power. BIG difference. The Control1Xtreme is 80W Max. Read the fine print. They do not have the same drivers, crossover or protection circuit.

Since they do not have the same drivers (check replacement part numbers), the same crossover, etc, then you cannot replace a crossover to make it work. Buy the right speaker for the job.

April Fools......

Hey....Dont hook up any speakers to that piece of crap receiver.

Also. Do us all a favor and use both sets of JBL's . Turn it up real loud and run some nice hiphop with extreme extended bass in it.

Let us know how it sounds.

Your continued badgering after you already have the correct answer is getting thin.

Also....use only the same color speakers with those crossovers.

I' am not doing the April Fools joke LOL. I just really like the sound of the Control 1 speakers so I was wondering if I can just connect the Control 1 to my receiver since I found one on the net for very cheap price. But if that's really not good for my receiver then I guess I have to get the Xtremes since those are 8 ohms. Is there anyway to bypass the Control 1 so I can use it on my receiver?

Beleve me if I had alot of money I would buy a receiver that can handle 4 ohms and get the Control 1 but I don't really have enough money so I' am trying to find a way so I can use the orginal Control 1 on my receiver. But if you guys really think it's bad for my receiver then I will buy the Xtremes.

Sweet. Somebody lock this dumb butt thread up.

I' am serious I really need help on this I really needed to decide to get the orginal Control 1 or the Xtremes for my system.

April 1st is almost over.

Control 1Pros = Kaboom
Control 1Xtreme = No Kaboom

Well yes maybe the Control 1 is better but will I be able to use it on my receiver??? I can only afford on getting the Control 1 or the Xtremes.

Maybe its the avatar thats irritating me, but this has to stop.

NOW.

Dude. Heres your help.

Pay attention.

Your piece of crap receiver only operates at an 8 ohm load. The one speaker is 4 ohms. Hook it up and watch it blow up. Dig?

The other speaker is 8 ohms. Hook it up and enjoy. Thats easy...Huh???

Now shut up and go away. You've had your 'help' Dont ask one more question about this. NOT ONE! You're wasting bandwidth.

got it?

If your amp (receiver) is rated at 8 ohms, that is the lowest load that it can handle. If you try to drive speakers that are rated at 4 ohms you will most likely fry your amp. Simply swapping out the crossover from your speakers will not make them 8 ohm speakers. All of the components need to be rated accordingly. In fact, a mismatch between the new crossover and the other components may cause even more problems. I do believe that there may be a few wiring tricks that you can use to increase the load of your speakers. Of course, then you will be altering the designed performance level of the speakers. You may not fry your amp, but you won't get the sound out of your speakers that they were designed to give. From an audiophile purest's view, you shouldn't be pushing critical listening components with a receiver anyway. A basic good quality amp is always preferred. There are also more decent quality 1 ru monitor amps on the market today than there has ever been, and they are reasonably priced. You may find some more answers to your impedance matching questions at the link below....

http://www.musicsupplycenter.com/SearchResults.asp?Cat=50