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I have a JVC home theater in a box SRX 5020J and I am using the cables that come with it. This is a starter set for me and I eventually plan to upgrade piece by piece but for now this is what I have to work with. Anyway, the sub-woofer has auto standby and it cuts off way more then I am thinking it should be. I have messed with the cross-over and there is no setting that seems to change this. I was thinking that maybe I needed a better cable going from the amp to the sub but I am not sure and that is why I wanted to ask here. There is no setting to make the sub stay on all the time, at least none that I am aware of.
Any and all suggestions will be greatly appreciated.
This mainly seems to happen with my DVD player plkaying movies but not with audio CDs. Mainly I guess because there are times in the movie where low end is not produced. Maybe there is a setting on the dvd player that I am missing?
Two tricks to keeping the sub AUTO ON active and not going to sleep during quiet passages:
(1) Boost the sub signal output from the rcvr by using the speaker set-up menu for the sub level. Avoid setting the dB max all the way within the scale provided to avoid distortion.
Then reduce the sub amp gain to compensate. Ideally, use calibration test tones and a sound meter to rebalance the spkr mains and sub.
(2) Get a RS Y-splitter (one female to two males) for the line-level L and R inputs on the sub amp. This adds ~3dB signal boost and also requires recalibrating the sub.
Two problems with that. For this inpout (the dvd) I already have the setting the for the sub on the rcvr all the way up. Secondly, and maybe I am not following you here, but my sub woofer only has one input and the rcvr only one out. There is no L and R.
This is a longshot that might help you. If your receiver has speaker "large/small" settings, put all speakers to small. If your receiver has a variable crossover setting, choose something high like 100 or 120 Hz. Both of these will increase the level of the signal going out the sub line and maybe keep it on.
Yes, rcvrs just have the one SUB OUT, but it seems that your sub amp doesnt support L & R inputs. OK.
Since you have max'd the rcvr's subwoofer level scale after trying Brian's suggestion that spkrs be SMALL, aside from a beefier new sub, you might switch the sub amp away from Auto to just On for DVDs (and later shut down the sub amp when not in use or back to auto for sleep).
I am pretty sure that is the case but I will double-check to see for sure. Thanks for the suggestion
Bill,
I don't think the amp has the ability to switch between always on and auto If it does I certainly would not mind having it that way.
The more I think about it though the more I think it is related to my DVD player for some reason. Since I started this topic I have been thinking long and hard about it and can not remember a time when this happened unless it was during a DVD movie. I wonder if the DVD (Toshiba SD4700) has any settings that may effect this????
If I get a Y spliter and go from the one Output on my amp to the spliter and then still only use ofne of the two males to go into the sub will I get the +db gain even without using both L and R? In other words can I use it just to gain some power?
Also does anyone feel that another cable would solve the problem?
I think this Y spliter may solve my problem. Can anyone tell me for sure. I will only be using one of the two male connections to go into my mono connection on my sub. Will I still get the boosted output gain that this device is supposed to provide?
I have also been looking into some features on the DVD (Toshiba SD4700) to see if anything there will help.
after trying Brian's suggestion that spkrs be SMALL, aside from a beefier new sub, you might switch the sub amp away from Auto to just On for DVDs (and later shut down the sub amp when not in use or back to auto for sleep).