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Discussion Starter · #1 ·
hi everyone I did a bad thing yesterday (my wife says so every time) so I end up looking on craigslist for laserdisc players and/or Discs and find one I want (almost always do) so I go to get it. When I get there this guys got a really nice setup so we hang out a while and talk HT. in the process I mention that my front speakers aren't really all that good I had Pioneer CS G403's ok but not great he says hes got a really good set of Cerwin Vega D-9's he'll part with and their awesome lookin no nicks scratches or anything like they were just made yesterday so we hook them up to his Yamaha avr and he cranks them they sound killer and he left them playin while we talked some more after about 45 mins I gotta have them so we struck up a deal (actually bought a whole sony 5.1 system from him) along with ld player and the d-9s well I get them home and and spend all night moving stuff around to make them fit then 4:45 rolls around and the wife gets up to go to work, awesome now its time to see how they sound in my theater so I turn on the system and turn it up I am using a Sony STR-DH820 avr sound is awesome, passing 60 on volume (about all pioneers could take) and the D-9s act like, Really is this all you got so I keep going and they still sound perfect, crisp and clear movie poster falls off wall so I stop there ok i'm happy I think, so I turn it down then off and walk up to equipment rack and oh my god the avr is hot and I mean HOT!!! can't even lay my hand on top of it. now my equip. rack is open in the front avr sits on top shelf with about 2.5" of space above it, back is closed. theres my problem should I try to make more space above avr, add a cooling fan blowing across it or could there be something wrong with speakers I don't know about or is it normal for avr's to run that hot with REAL speakers. Well theres my problem what should I do? ( already checked wiring all is correct) sorry post is so long, any comments will be much appreciated
 

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AVRs are typically designed to be operated with more ventilation than yours currently has. Give it more space to breathe and see if that helps. A fan wouldn't hurt, but if you're going to do that I'd recommend opening up the back of your A/V rack if possible, otherwise the air still has nowhere to really go.
 

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Discussion Starter · #3 ·
thanks Peter for the response. I can give the avr 3" more moving all shelves down but that's about it so i'll do it and yes I can open back up so I was gonna put a Hamilton beach true air air filter behind it to blow filtered air over top of it (in back- out front). Does that sound worth the work or should I just find a different rack system that's more open?
 

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Is your receiver able to handle a 4ohm load? those D-9s will be hard to drive.

Note: I just looked up the specifications and no your receiver is not meant to drive 4ohm speakers. if you continue to use them you run a good risk of cooking something in it.
 

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Well, it sounds to me like you were really cranking the volume to try out your new gear which is normal.
Now, is this going to be your normal mode of operation or will you listen at a level that does not knock posters off the wall and damage your hearing ? This is a serious question.
If you will be listening at 'normal' levels give the system a try and see if you actually need to do anything at all.
If it still gets very hot then forced air would be the first thing to try.
 

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Discussion Starter · #6 ·
Tonydbv thanks for your research and I do get your point but the speakers say "4 - 8 Ohm" so does that mean thay can do either or what?

Chashint yeah I probably will not try to knock things off walls a lot but would like to know I can if I want too kinda like having a real Ferrari that can do 200mph as opposed to a fiero with a 4 cyl and a Ferrari body kit if ya know what I mean (best reference I could think of I'm into cars too) but I don't want to risk the AVR or the speakers in the process. I want to do things the right way
 

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Tonydbv thanks for your research and I do get your point but the speakers say "4 - 8 Ohm" so does that mean thay can do either or what?
The 4-8ohms just means that is its normal operating resistance. However looking at the specifications of the D-9s (See below) they are 4ohms and possibly even lower causing a lot of stress on the Sony receivers amps if you run it at a reasonable level for more than a 15min stretch. The lower the Ohms the closer to a short that speakers are putting on the receivers amps causing heat build up. if the receiver like your Sony is not designed to run a 4ohm load it will eventually cook your amp section.

Specifications:
3 way Floor System
frequency response 29Hz-20kHz
Max Power handling: 400 Watts
Sensitivity: 1 WATT @ 1 METER: 101 dB MAXIMUM OUTPUT LEVEL(dB)@1 METER DRIVEN TO FULL POWER: 125 dB
Normal impedance: 4 Ohms
 

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Discussion Starter · #9 ·
thank you for your help
but : what should I do, I want to use these speakers they sound awesome
a friend said to wire them in series to up the ohms which I tried but the d-9s lost sound quality (so that didn't work)
so i'm assuming I need a new avr or a multi amp set up
any advice on how to hook them up or to what new avr I need would be greatly appreciated as I love the way these look and sound i'll buy an avr to suit them
If new avr is necessary I need 7.1 and at least 4 hdmi inputs, really need recommendations as I don't want to screw up again

if i'm beating a dead horse and should just forget the d-9s please tell me, I don't want to hear it but I can take it

Thanks
 

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Well you really only have two options, upgrade your receiver (spending $500) or replace the speakers with something thats smaller.
For a receiver this one is highly recommended.
 

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Please post back in this thread when you new AVR arrives.
I would like to know your impressions of it after you knock a few posters off the wall.
 

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Discussion Starter · #13 ·
will do and pics and other equipment list is in finished rooms forum here if your interested thread titled "my systems" it will take over the theater room and sony will move to tv room and so on.
 

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congrats on the new receiver :)
 

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Discussion Starter · #15 ·
well I Talked to Onkyo today they said this receiver will not work either they said all speakers must be 4 ohm or i'm gonna have the same problem as the sony had. Does this sound right to you? my center and 4 surrounds are all 8 ohm only the d-9s are 4 ohm. do you see this as a problem? i'm getting to the point I wish I had never seen the d-9s

Help i'm pulling my hair out!!!
 

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Im not sure what Onkyo is trying to say as I can promise you that is not the case. The speakers do not have to all be 4 ohm?? trust me it wont be a problem.
 

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Discussion Starter · #17 ·
ok thank you for the reassurance I guess the worst that can happen is I burn up the new avr and i'll just send it back. the guy at onkyo well I don't know how to put it but he seemed like he had no clue. doesn't make me feel too good about giving onkyo my money. but I am going with what you say and your recommendation

The guy at onkyo said and I quote" using 4 and 8 ohm speakers is like putting two different size tires on the rear of a car the transmission is gonna blow up"

the reason I was calling them was to see if there was anything I had to set on the new avr telling it 4 ohm fronts or to just hook everything up and start playing but I guess tech support of onkyo is useless unless your buying a home theater in a box

again thanks for all your help!!!!
 

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In the receivers menu there will be a setting to select the type of speaker 4 or 8ohm some receivers will say 6ohm or 8ohm use the 6ohm setting.
I think he was confused as your going to be running 4ohm speaker on both front channels. I have a feeling he thought you were going to put one 4 ohm speaker on the left and an 8ohm speaker on the right LOL
 

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Discussion Starter · #19 ·
nope he knew for sure it was 4 ohm fronts 8 ohm center and surrounds I was very sure of my wording and he understood the set up, he said "all speakers must be the same" I probably should have said there was gonna be 3 powered subs I bet he would have said that wouldn't work either, then I would have known onkyo hires day labors with no audio knowledge oh well I will not be calling them again for anything other than to send it back if theres a problem! and I don't think i'll be dealing with them again! I'd rather spend more money and deal with a knowledgeable company

so I guess that's the beginning of my review of it
 

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The problem is that onkyo customer service (as well as many other manufacturers) is not even located here in North America chances are you were taking to someone over in Malaysia .
 
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