[twotwoal]

I heard of people having more than two subs for thier home theater systems, however to date I have not read anything showing how to install more than two subs. Does anybody know how to install multiple subs?

 

[dsully444]

Someone can correct me if I am wrong as I have never done this, but you just use two additional Y connection cables off of the original Y cable to split the first RCA out from your LFE on your receiver.

 

[primetimeguy]

And unless you have the proper tools to measure the freq reponse in your room, you may create more problems rather than fix some. It is not an easy task to properly setup that many subwoofers.

 

[Patdeisa]



Quote:
Originally Posted by dsully444 /forum/post/12867173


Someone can correct me if I am wrong as I have never done this, but you just use two additional Y connection cables off of the original Y cable to split the first RCA out from your LFE on your receiver.

Just do this if you can't daisy-chain them together (i.e. the subs have no input and output at line level). You'll probably also want to raise the sub out level on the AVR a few dBs, to make sure that a strong enough signal gets through for the sub's auto on features.

 

[Sherardp]

Or you can use a Velodyne SMS-1 which gives you 3 sub connections. You can use a splitter on one of the connections and that would give you 4. Plus it allows you configure the LFE etc.

 

[twotwoal]

Thanks to all, I guess I will do some research on the Velodyne's subs.

Thanks

 

[kgveteran]

Check out some of the DIY subs.We got guys using eight drivers !!!!


Come on over.


KG

 

[jpmst3]



Quote:
Originally Posted by Sherardp /forum/post/12867325


Or you can use a Velodyne SMS-1 which gives you 3 sub connections. You can use a splitter on one of the connections and that would give you 4. Plus it allows you configure the LFE etc.

Yes, but this configuration will not handle that phase issues that arise with more than one sub.

 

[1stHD]

I have an eD A5 on order. Once I receive it I want to attempt to use it with another low end different brand sub. But the receiver and each sub have obl y one connection. How to connect them to take adavange of both subs?


I think this issue deserve a thread that people will read frequently.

 

[Chris Schempp]



Quote:
Originally Posted by 1stHD /forum/post/12922012


I have an eD A5 on order. Once I receive it I want to attempt to use it with another low end different brand sub. But the receiver and each sub have obl y one connection. How to connect them to take adavange of both subs?


I think this issue deserve a thread that people will read frequently.

Does the sub have an LFE input on it? The old one?


If it does, there's an LFE OUT right next to the LFE IN on the LT/550

 

[jpmst3]



Quote:
Originally Posted by 1stHD /forum/post/12922012


I have an eD A5 on order. Once I receive it I want to attempt to use it with another low end different brand sub. But the receiver and each sub have obl y one connection. How to connect them to take adavange of both subs?


I think this issue deserve a thread that people will read frequently.

Just use a splitter from the subwoofer output on the receiver.


You will need to dial in the phase on each sub to get the proper response.

 

[1stHD]



Quote:
Originally Posted by Chris Schempp /forum/post/12922086


Does the sub have an LFE input on it? The old one?


If it does, there's an LFE OUT right next to the LFE IN on the LT/550

There is only one input line which takes in a RCA cable from the receiver. Is that good to connect to the LFE OUT on the A5 LT/550?


The only other control is an output level. Nothing else except a power cord. It's a very simple sub from Onkyo HTIB.

Powered Subwoofer (SKW-520)

Type: Bass-reflex

Input sensitivity/impedance: 330 mV / 100 kΩ

Maximum output power: 220 W (Dynamic Power)

Frequency response: 25 Hz-150 Hz

Cabinet capacity: 1.35 cubic feet (38.5 L)

Dimensions (W × H × D): 10-13/16" × 20-3/8" × 16-3/16"

(275 × 518 × 411 mm)

Weight: 30 lbs. (13.6 kg)

Drivers unit: 10 inch Cone Woofer

Power supply: AC 120 V, 60 Hz

Power consumption: 150 W

Other: Auto Standby function




jpmst3,There is no phase control on the old sub. And I am concerned that adding the old sub may do more bad than good. I do wish I can successfully use both.


Isn't that true that if use multiple subs they have to or better be exactly the same?


Thanks. Guys.

 

[Chris Schempp]

Basically, what I was suggesting is that instead of getting a y-splitter, you could just get a second cable.


Connect the Subwoofer out from the receiver to the LFE IN on the A5-350.


Connect the LFE OUT on the A5-350 to the LFE IN on the current sub.


Basically a pass thru which will allow you to power both.

 

[1stHD]

I am reluctant to use Y-splitter. I don't know on audio Y-splitter but the video Y-splitter will make the signal weaker by half, at least for analog video signals. Correct me if I am wrong.

 

[goneten]



Quote:
Originally Posted by 1stHD /forum/post/0


jpmst3,There is no phase control on the old sub. And I am concerned that adding the old sub may do more bad than good. I do wish I can successfully use both. Isn't that true that if use multiple subs they have to or better be exactly the same?

Acoustical coupling is most beneficial if the subwoofers are identical. Using non-identical subwoofers can pose problems if the one overloads before the other. Even if you calibrate both subwoofers to the same level, one will reach compression levels earlier.


You will also experience phasing issues between both subwoofers given the non-identical FR.


--Regards,