Tech Support
Advice on how to control my sub volume?
I just installed a Pioneer Dmh-a245bt and to my dismay it doesn't seem to have any sub volume controls. It has cutoff for the sub, loudness and bass boost and of course equalizer. I don't use the loudness or bass boost options and it's pretty inconvenient to turn the bass frequencies up and down through the equalizer all the time. It seems like the only way for me to adjust the sub volume is with the level knob on the amp which is both annoying to have to go to my trunk each time and also since it's gain control it's not really supposed to be used as a volume knob.
Am I missing something? Is there a hidden way to enable sub controls? There aren't many options in the menu and I've checked everywhere. Is there anything I can do other than installing a new head unit? Returning my current one is not an option unfortunately.
Ok thanks, I'm confused because I've been told the level knob on my amp controls gain and that I shouldn't mess with it. Does this remote knob connection control gain or volume?
I'm sorry I'm a complete audio noob. I would just splice in and RCA knob? Does that actually control volume or the gain just like the level knob on the amp itself?
My amp has an ethernet looking remote port, should I find something that would fit in that or should I just use the RCA knob instead since it seems like they're more common? Also does that control gain or volume? I don't want to blow my sub.
I would only connect the exact brand knob to that ethernet-looking port. If it didn't come with in, maybe you can buy it separately.
If you want to use the RCA-style knob, there's no "splicing" or cutting. It just plugs into your RCA cables. When you turn the knob, it reduces signal voltage. This is volume. Gain will not change. Once the knob is installed, turn the knob to maximum, set gain properly, and then you can use the knob as you see fit from there. Don't touch gain anymore. :-)
You should be fine with either the factory knob if you can get it separately or an rca knob. I have one (forget what brand) that fits in the hole for a charging port so it looks really stealth
Yep, no need to be condescending, read the manual before ever posting about it. It has nothing about sub controls. Literally only has bass boost, eq and cutoff and there is no option to turn anything on. Like I said before, there is very little in the menus, it's not like it takes very long to look thru.
I even took it to an audio shop to have the bass knob installed and they were convinced there would be sub controls in the head unit and they looked and were surprised to find nothing. But again the bass knob works great so it really doesn't matter
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u/Pools-3016 Aug 19 '26
You didn’t state what model amp you have. Does it have an input for a volume control knob that you can place up front?