TEAC AG-D8900 Sub Preout problem with Pro Logic

[Fayt]

Alright, I have a Teac AG-D8900 receiver, a set of Onkyo surround speakers, including a powered sub.

The sub only has a bass adjustment knob, line in, and power cord. When my sub is hooked up to the subwoofer pre-out on the back of the receiver, it doesn't turn on... ever. I've gone through all settings, turned all speakers on and off, changed front/center/surround to small and large, and even turned the subwoofer on and off through the receiver, nothing. Even when testing, all the speakers will play the note, but the subwoofer doesn't play (even when the receiver is sending the signal) But yet, if I plug the RCA cable into Audio 1 out, and change from Pro Logic to stereo, it plays, but then I lose surround.

My receiver gets the sound from my computer via an optical cable, and video from s-video. Would that have a problem when the subs pre-out is RCA? My DVD player uses regular RCA sound inputs, and it still doesn't turn on unless I plug it into the audio out, but yet again, I lose Pro Logic. Could it be a faulty pre-out?

 

[Adam]

Fayt,

First, welcome to the forum!

It might be a faulty pre-out, but I have a suggestion. If you haven't already, set all of your speakers to "small" in the speaker settings in the receiver, and make sure that the receiver is set up to output a signal to the sub. If you can set the crossover frequency, set it as high as you can. After that, try connecting the sub through the pre-out and playing something in Pro-Logic that you know has some bass in it.

I'm not trying to be patronizing at all. I just want to make sure that you have the receiver set up so that bass actually will be sent to the sub.

Please let us know if that works, or if you've already done that. Thanks.

Adam

 

[mtrycrafts]

Alright, I have a Teac AG-D8900 receiver, a set of Onkyo surround speakers, including a powered sub.

The sub only has a bass adjustment knob, line in, and power cord. When my sub is hooked up to the subwoofer pre-out on the back of the receiver, it doesn't turn on... ever. I've gone through all settings, turned all speakers on and off, changed front/center/surround to small and large, and even turned the subwoofer on and off through the receiver, nothing. Even when testing, all the speakers will play the note, but the subwoofer doesn't play (even when the receiver is sending the signal) But yet, if I plug the RCA cable into Audio 1 out, and change from Pro Logic to stereo, it plays, but then I lose surround.

My receiver gets the sound from my computer via an optical cable, and video from s-video. Would that have a problem when the subs pre-out is RCA? My DVD player uses regular RCA sound inputs, and it still doesn't turn on unless I plug it into the audio out, but yet again, I lose Pro Logic. Could it be a faulty pre-out?

Is this a new problem or had this issue all along?
Can that receiver trim each channel, including the sub to level matching setups? If so, try to turn up the sub ch.

If your receiver has the optical in, then that is not the issue.
With that optical input have you tried DD 5.1?
Does that computer audio card be set to output bitstream? PCM? Try bitstream and do dd5.1. What is on the computer?

 

[Fayt]

Fayt,
It might be a faulty pre-out, but I have a suggestion. If you haven't already, set all of your speakers to "small" in the speaker settings in the receiver, and make sure that the receiver is set up to output a signal to the sub. If you can set the crossover frequency, set it as high as you can. After that, try connecting the sub through the pre-out and playing something in Pro-Logic that you know has some bass in it.

I set all the speakers to small, then tried the test again, no luck.
Unfortunately, I cannot set the crossover frequency with either the receiver or the sub.

Is this a new problem or had this issue all along?
Can that receiver trim each channel, including the sub to level matching setups? If so, try to turn up the sub ch.

If your receiver has the optical in, then that is not the issue.
With that optical input have you tried DD 5.1?
Does that computer audio card be set to output bitstream? PCM? Try bitstream and do dd5.1. What is on the computer?

I'd say its a new problem. I used to have a really crappy Dual 5.1 system, and the sub worked perfectly fine. After I moved though, I lost the power cord to the sub so for some time I didn't know. When I plugged it in, the sub would just play a constant hertz, never respond to the input. I figured the sub was shot and I wanted new speakers anyway, so I purchased what I have now. My new sub doesn't play that constant hertz like the other one, but it doesn't turn on either. Just sits on standby while the other speakers play.

The receiver can trim each channel, and the sub is at +5 with no response.

I don't know what the sound card is outputting, it is just the standard card in my computer. Pretty sure its a Yamaha YMF-753. I'll see if I can change the settings at all.

 

[Fayt]

So... for whatever reason it happened this time and not before, when I put my center channel to small, it started playing out of the sub. Basically, it works now! Yay!

Time to enjoy it

Thanks everyone!

 

[mtrycrafts]

So... for whatever reason it happened this time and not before, when I put my center channel to small, it started playing out of the sub. Basically, it works now! Yay!
Time to enjoy it
Thanks everyone!

Great, thanks for the feedback. There is always something weird that hangs things up, in this case the center speaker. But, that should not be the case with most receivers as the LFE selection doesn't depend on speaker size selection. You indicated a control on the sub. Is that for the signal sensitivity? And, I would assume it is always on standby and the sub amp works with a high enough signal? If so, I hate those features on a sub.