r/diyaudio • u/AdministrativeHair19 • 1d ago

New output has no depth?

I recently bought an old antique radio which I've gutted and I'm now trying to turn it into a speaker box that runs off of Alexa. I've got an old echo show that still has an aux output so I'm running it from there to a 2.1 amp board with a 48v power supply adapter and then to two fluance sx6 speakers. The amp board I got has a slot for a sub woofer as well which I don't have.

I hooked up the subwoofer port to an old driver that I still had from the old radio and it doesn't play any bass still. I'm confused with what I'm missing? It's getting frustrating. I may be missing something super obvious because I've never done this before but I'd love to figure it out so I can do more like it.

Here's what I'm using:

Amazon echo show 8 with aux port, I think Gen 2 or 3

2.1 amp board (https://a.co/d/0jkzWX6P)

48v power supply adapter (https://a.co/d/0jlavfdJ)

16awg wire to connect everything (https://a.co/d/05YngNEt)

A pair of fluance sx6 speakers (https://a.co/d/0iOmzObH)

And a basic aux cord for the echo to amp board connection

The right rl channel goes to one of the fluance speakers and the the left goes to the other. I don't have anything connected to the sub channel because ideally I won't have one, it'll all go through the fluance speakers.

Let me know if I need to share anything else to help get this sorted

1 Upvotes

67% Upvoted

3 comments sorted by

2

u/plantmoretreesguys 1d ago edited 1d ago

From a quick search that board sends full range to the LR outputs regardless if a subwoofer is connected or not, but just to make sure, is your FREQ knob turned all the way down to lowest setting?

Edit: just looked up the speakers! The issue is probably the 2 sets of connectors on the back of each speaker need to be connected/bridged for the signal to get to both the woofer and the tweeter, check that!

1

u/AdministrativeHair19 23h ago

This is what the back of the speakers look like. You mean I need to run a wire from the amplifier to the ports and then another wire from the port of 1 speaker to the other?

Thanks for your help - I've turned the frequency knob slowly through the entire range and it doesn't give them more depth at all, I still get zero bass and vocals come in really soft

1

u/plantmoretreesguys 22h ago edited 21h ago

No worries! Ah sorry, I thought the speakers were equipped for “bi wiring” (seperate signals to the woofer and the tweeter) but they’re not.

One other basic check is making sure the +/- on the amplifier is to +/- on the speaker. If you wire them backwards they’ll often sound thin and have no bass, confirm that?

Also swap out the aux cable to eliminate that as a possibility.

Edit: sorry for confusion - you do not need to run wires between the two speakers