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In Reply to: RE: New set-up, amateur needing help. posted by JonDC on July 20, 2015 at 07:03:18
I don't see a question. What's the problem?
Follow Ups:
I edited and now can't post the full text. I'll try here:
Hi, first post here.
I'm setting up a movie/music room. I have the video side figured out but need direction for sound. I'm going with two speakers up front plus a subwoofer - no surround. I have installed two Bowers and Wilkins CMW 7.3's:
3-way in-wall system
Drive units: 1x ø25mm (1in) NautilusTM tube loaded soft dome tweeter 1x ø100mm (4in) blue Kevlar® cone FSTTM midrange 2x ø150mm (6in) paper/Kevlar® cone bass drivers
Frequency Range (-6dB): 43Hz - 28kHz
Recommended Amp Power: 25 - 200w 90dB 4Ω (3Ω)
I currently have a Yamaha RX-V377 5.1-Channel A/V Home Theater Receiver which doesn't have pre-outs for an amp.
Yamaha: seems like there are enough watts, surprising?
Channel 5.1
Rated Output Power (1kHz, 1ch driven) 100 W (8 ohms, 0.9% THD)
Rated Output Power (1kHz, 2ch driven) 85 W (8 ohms, 0.9% THD)
Rated Output Power (20Hz-20kHz, 2ch driven) 70 W (8 ohms, 0.09% THD)
Dynamic Power per Channel (8/6/4/2 ohms) 110 / 130 / 160 / 180 W
I think I need a new receiver and an amp to power these new speakers but I'm not sure. I need HDMI ports on the receiver and phono input would be nice.
Would you agree that I need more watts/channel for these speakers? If so, how would you suggest I go about it? I can spend up to $2000 (more if absolutely necessary). Looking for something simple without a lot of options, menus, etc..
Thanks for any help,
Jon
You can see that when you're watching movies with all channels driven, the specs on all the receivers fall off because they just don't have the reserves to fully drive all the speakers. Your front will need the most and using a separate amp for them will enable you to use one that best matches your speakers. The best amps can double their power going from 100 wpc at 8 ohms to 400wps at 2 ohms.
-Rod
Depends on how loud you want it. I'd say set it up and if you want more power go for it. BUT remember we hear on a logarithmic scale, so unlike money say where you go from 70-140 you have twice as much, DOUBLING the power output to 140ch gets you only an additional 3db per channel. You need 10X the power to double the sound. Keep your expectations realistic. Make sure the in walls are properly installed. I'm no fan of an in wall for the center channel. Good luckE
T
Edits: 07/20/15
The in-walls are all I have, there are no other channels besides the sub. I may go back to full surround later - this is an experiment in a way. What about sound quality - will increasing watts help there?
No increasing the watts just increases the watts. As I said you could double the watts and you'll only get 3db more of sound. Those are good in walls just make sure they are properly installed and look at the types of prep people do to the walls themselves before installing in wall speakers. Good luck.
ET
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