Connecting Sony passive subwoofer to new Yamaha RX-V685 via sony receiver using coax - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 3 Old 07-19-2019, 08:31 AM - Thread Starter
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Connecting Sony passive subwoofer to new Yamaha RX-V685 via sony receiver using coax

I currently have a Sony Muteki 5.2 HT system (HT-M5). I am planning to upgrade to Yamaha RX-V685.
I am extremely happy with the sound I am getting with my current system however it is limited to DTS and Dolby Digital formats. I am upgrading only for DTS X and Dolby Atmos.
Since V685 can work with 6 ohm speakers, I am planning to retain the speakers. They are all in excellent condition.

The front speakers of Sony are of following specification :
Speaker system 2-way, 3-driver, Bass reflex Speaker unit Woofer: 200 mm (8 in), cone type × 2 Tweeter: 25 mm (1 in), horn type Rated Impedance 6 ohms.
The Center speaker of Sony is of following specification :
Speaker system Full range, Bass reflex, Magnetically shielded Speaker unit Woofer, Rated Impedance 6 ohms
The surround speakers of Sony are of following specification :
Speaker system Full range, Closed box Speaker unit Woofer: 100 mm (4 in), cone type Rated Impedance 6 ohms

All the speakers have proprietary connectors. However, very few people know that it is just a latch system. The connector can be easily removed.
I am tight on budget since I bought a new LG C8 this month hence the salvaging.
That being said,
I have four questions.

1) Is it okay to use these speakers given the specifications which I think are compatible with RX-V685?
2) As per the title, the Sony system's Sub woofers are of passive type. I was wondering if I could follow this setup :
Connect the sub woofer pre-out of Yamaha to co-axial input of Sony system and use at least one of the existing sub woofer.
(Speaker system Bass reflex Speaker unit 250 mm (10 in), cone type Rated Impedance 4 ohms)
Will this work?
3) I want to have a 5.1.2 setup. I don't want to cut a hole in my ceiling and somehow I am not convinced on up-firing speakers that bounce sound off to ceiling.
I want to have 2 front HEIGHT SPEAKERS for the atmos.
Are front height speakers a good idea to achieve 5.1.2?
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post #2 of 3 Old 07-19-2019, 10:05 AM
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don't think that's going to work. The sub out on the Yamaha is analog, the coax input is digital. It wont recognize the signal.

Not sure of your budget constraints but a small powered sub would probably sound better than what you currently use.
https://www.parts-express.com/dayton...oofer--300-627

https://www.parts-express.com/dayton...oofer--300-628

https://www.monoprice.com/product?p_id=9723

open box of above sub save $.

https://www.monoprice.com/product?p_id=24613

Afro GT
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post #3 of 3 Old 07-20-2019, 09:46 PM - Thread Starter
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Thank you!! Did not know coax input is digital. Never used them.
The sub you have recommended are indeed my budget friendly. However, in my country they slap a lot of tariff on them and it's 4 times the price here.
I did come across Yamaha sub which is the closest to dayton sub you suggested. (In terms of price)
It's Yamaha NS-SW050

Also, any suggestions on the speakers I am trying to re-use?
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