External speakers can i install external speakers with out using an amp

Based on my research, the Yamaha PMH5000 mixer features two 1/4-inch "insert" jacks for connecting external effects processors, such as compressors or equalizers, to individual channels. These jacks are not intended for connecting external power amps.
However, the PMH5000 does have two "main out" jacks that can be used to send the mixed audio signal to external power amps. These are typically located on the back of the mixer and may be labeled as "L/R" or "Main Out."
When you connect an external power amp to the main out jacks, the signal is sent directly to the power amp and is not routed through the internal power amps of the mixer. The external power amp then amplifies the signal and sends it to the speakers.
It is important to note that when using external power amps, you should adjust the volume levels carefully to avoid damaging the speakers or the power amp.

If this unit has audio output jacks then these would be connected through an amplifier to provide your external speakers. Caution: Do not open the tv and connect additional speakers to installed speakers because you'll blow the small audio amp in the tv. I have seen this attempted many times

An external equalizer will not help this at all. The problem is likely within the amp (feeding the main speakers), the connections from the board to the amp, or the speakers themselves. In other words, the answer would be "NO." Best of luck!

Elaborate a bit on what you're trying to do if this doesn't work for you.

This unit has Pre Outs near the center of the rear panel for all audio channels which will allow you to use external amplification for any speakers you wish to use and the receiver will still control the volume.

See #12 on page 10 of the manual. Try retrevo.com

Just run RCA cable(s) from the desired Pre-Out jack to the input(s) on the external amp with its speaker(s) attached. Set the external amp's volume (if it has one) to very high, then leave it alone. Run through the Yamaha's speaker location and volume settings to level-match the external speakers to the rest.

If you want to simultaneously use the Yamaha-attached speakers for the same channels as the external amp you'll have to match the like channel volumes to each other using a volume control on your external amp, then level-match them as a unit to the other channels.

Steps to be followed:
1. check whether audio driver is installed properly ? if not install audio driver & check
2. check audio setting in control panel & confirm
3. connect external speaker in laptop and check whether sound is coming? if sound is coming then ur laptop internal speaker need replacement
4. if there is no sound in external speaker then need to check ur motherboard or sound card.
All the best.

You need to check the default settings, the logitech might have over ridden the default sound card settings.

some cars have internal amps for the speakers try connecting the remote wire it's the blue wire with a little white on it worked in my moms van.. if that does not work try testing it with a speaker from your house

I think it's a bad idea to use a simple potentiomenter to do what you want to. You'd be better off using another amplifier with RCA cables in between them. It's not hard to find an old amp that you could use these days.

Any sub will need an external amp - a head unit amp doesn't have the suds to drive it. You can try it with the deck but you'll only get a whisper out of it.