2. home-theater
  3. 1065036975

Is this possible?

I work as a leasing manager at a very upscale apartment complex and we are creating a home theater room with a 10 foot drop-down projection screen and seven in-ceiling speakers with two in-wall subwoofers. The installers came today to install the amps which turned out to be a Denon AVR-1082 which has 7 channels at 150 watts into 8 ohms. The installer said that the subs were not self powered and he would power them from the receiver. I can only assume that he will splice the rear channels and power the rear 4 speakers off of 2 channles and use the other 2 channels of surround amplification to power the subs. Doesn't this sound like it will create havok on the receiver with the ohm loads? This couldn't possibly result in 7 channel surround more like 5 channel with 7 speakers right? Does anyone know if there is a setting on the 1082 that could have it power woofers or is this guy gonna try and power subs off ofa surround signal and if there is no crossover won't that damage the subs? Is there some kind of setting that will allow those extra channels to only send LFE output? I think this installer is really shady since he claimed that the 1082 cost 2 grand but I know it is discontinued and the MSRP on it used to bu under $1000. Can anyone verify if this is possible or if we are being ripped off.
bmw328iproject
viggen
838 posts
 
The installer is losing a single channel somewhere since this is a 6.1 receiver. That means there should be 6 dedicated speakers, 3 in the front and 3 in the rear. By splicing the rear channels, you only have 2 in the rear. This isn't a big deal, however, since no one will notice that channel anyways (I think).

Can't answer you regarding the resistance problem. That depends on the qualify of the amp and the total amount of resistance of all the speakers added up.
slappy
903 posts
 
Does this installer have a bunch of speakers in the back of a white van?

HAHAHAHAHA

There is no real 7.1 decoding, the two rear channels are each a cross of the rear and the surround on the corrosponding side. Its kinda like how pro logic gets multiple channels from 2 channels. Its all matrixed.

either way i would make sure of what you are getting, and for crying out loud, do not let him install a reciever that is no longer made, and that MSRPd for under 1k when he is saying it is a 2k reciever.
audiophanatik
59 posts
 
Seems awfully sketchy to me.
Might want to get a list of all expenses involved and research each speaker and component to ensure you are not getting ripped off
dbx
58 posts
 
If your going to be shelling out big buck's, I would make sure he's CEDIA certified. Do a search for CEDIA to learn a little more about the association. It's basically a custom installer association. I'd say you have a better chance of getting what you pay for if their a CEDIA member. I don't think that any CEDIA member would risk there membership by ripping off cutomers. There's to much money to be made by being a member in good standing. I know I've over simplified what CEDIA is, but all the different installer's here in Las Vegas that are CEDIA members, are people who really love what they do. If there's something that I can't do,I call them. If it's something that I know I can do, I call/visit them and they've always told me exactly how to do it. As far as your installer goes, I'd trust my gut instinct. He's already proven himself dishonest. DISCLAIMER: I am not a custom installer, nor am I a CEDIA member.
richingoth
326 posts
 
I believe you will be losing the LFE (.1) sub info by not using the sub pre out to a powered sub amp, also buy using the rear or side speaker amps to power the subs you will be getting only that encoded channel info (full range) to the subs not the LFE or main speaker info.
You could check Denon's web site in discontinued product archive for the product sheet and owners manual for this unit. (FYI: 150 watts into 6 ohms at 1 KHz, <.7% THD; 110 watts into 8 ohms at 20 Hz -20 KHz, <.05% THD).
I hope this helps.
Rich
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