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#428960 - 03/07/18 09:56 AM Subwoofer output
Newf Offline
aficionado

Registered: 04/14/05
Posts: 759
Loc: NL
I haven't used the subwoofer output much since I got my two units. But every time I did it was very poor and low volume.

Now I have a spare sub to use with it I decided to try it again. It's practically useless. I tried EP500/800, 3 SVS subs. All the same. Tried different cables, tried analog input and radio. You can tell the sub is on, there is a little bit of bass coming from it but only with their volumes are on 10. I also have to turn the Air up quite loud in order to even hear the bass in the subs. This is dangerous. I don't ever want my subs on max volume.

Anyone else using their sub out?
Both my Air's are the same.


Edited by Newf (03/07/18 10:02 AM)
_________________________
2xAA
M80/VP150/VP160/QS8
4xM3/M22OW/M2OW/VP150OW/4xM3IC/4xM3OW
EP500/800/HSU VTF3/SVS PB2k/SB2k/SB-12

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#428961 - 03/07/18 11:34 AM Re: Subwoofer output [Re: Newf]
Mojo Offline
connoisseur

Registered: 01/21/07
Posts: 4981
I never had that problem when I had my Air. I was using it with my cheap Sony sub that has an input impedance of over 600kOhms. Are you using a known good cable?

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#428962 - 03/07/18 12:59 PM Re: Subwoofer output [Re: Newf]
Newf Offline
aficionado

Registered: 04/14/05
Posts: 759
Loc: NL
just a rca cable with a mono jack on the other side.
_________________________
2xAA
M80/VP150/VP160/QS8
4xM3/M22OW/M2OW/VP150OW/4xM3IC/4xM3OW
EP500/800/HSU VTF3/SVS PB2k/SB2k/SB-12

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#428972 - 03/08/18 12:27 AM Re: Subwoofer output [Re: Newf]
Mojo Offline
connoisseur

Registered: 01/21/07
Posts: 4981
Can you check the cable on a different system? If the cable is good, the Air's sub pre-amp may not have enough 'nad-mass to drive those subs.

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#428976 - 03/08/18 12:50 PM Re: Subwoofer output [Re: Newf]
Newf Offline
aficionado

Registered: 04/14/05
Posts: 759
Loc: NL
it would be really odd of Axiom designed the Air and it doesn't work with their own EP500. I'm going to get a cable made with the proper connections on each end. I have the advantage of working somewhere that have engineers doing this all day. I'll report back.
_________________________
2xAA
M80/VP150/VP160/QS8
4xM3/M22OW/M2OW/VP150OW/4xM3IC/4xM3OW
EP500/800/HSU VTF3/SVS PB2k/SB2k/SB-12

Top
#428978 - 03/08/18 07:41 PM Re: Subwoofer output [Re: Newf]
Mojo Offline
connoisseur

Registered: 01/21/07
Posts: 4981
It "works" but maybe it's not optimum. If you recall the history, the sub out was a late addition so maybe Andrew did the best he could with way he had. I hope I'm wrong and it's just your cable.

The rumour is the next Air will have a built-in 400W sub, 200W/channel 3-way with detachable speakers and tweetage on the back for omni-directivity; all DSP controlled.

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