24" THTLP with TLAH towers and SLA curved center channel

[Rich4349]

Would running the system through an RTA help tune the high and low frequecies?

[Bill Fitzmaurice]

You don't run the system through an RTA, you use an RTA to measure the system response. You use EQ to adjust system response.

[shane2943]

Unfortunately, this receiver doesn't have the ability to EQ just the center channel. The towers sound great as they are so I don't want to EQ the incoming signal.

[Bill Fitzmaurice]

Since the towers and center have almost the same response something isn't right somewhere. Try the center with either the left or right feed to rule out the receiver.

[shane2943]

Good suggestion Bill. I did what you recommended just now. Hooked the curved SLA up to the left channel on the receiver to see if there's a difference. Didn't seem to change it much or at all as far as I could tell.

Here's a short video demonstrating the difference in sound. Video starts with just the right channel (tower) playing, then I balance it to the left channel (curved SLA), then back to tower, then back to SLA again.

https://photos.app.goo.gl/7fxr3ZUBPGoK32ym7

[Bill Fitzmaurice]

Assuming everything is wired correctly and the center is filled with polyfill it could be placement. I'd see what happens when it's placed the same as one of the sides.

[shane2943]

I'll try that next. Thanks for your help Bill!

[Bill Fitzmaurice]

Straight away do a battery test using a 1.5v battery to be sure all the midbass cones move in the same direction. I'm hearing a low frequency loss, which one or more midbasses being out of polarity would explain.

[shane2943]

Just confirmed with an AA battery that all the midbass cones move in the same direction together

[shane2943]

FIGURED OUT THE ISSUE! It was an ID10T error.

I had the HP crossover wired wrong. Basically had the 5 and 15uf caps backward. Sounds much better now!

[Bill Fitzmaurice]

[Seth]

Nice! Good job get'n it sorted