Hello folks, I need your opinion before I spend money for nothing

[freddi]

depending upon box volume a PRV 10FR300 with whizzer cone-- could be useful in a situation like this - I wish is hasd lower qts but for the money its good. It needs a tweeter above 7-10KHz.

 

[markbakk]

Is it possible to reduce the box size by adding, like, Styrofoam ''peanuts'' or a pillow in the bottom of the speaker box ? Sand or gravel could work, but it's heavy and dirty !

Why would you?

 

[Godi]

The speakers box are a little boomy, probably because the volume is to big for the speaker ?

 

[Davor D]

Is it possible to reduce the box size by adding, like, Styrofoam ''peanuts'' or a pillow in the bottom of the speaker box ?

Never tried myself, but hard foam like styrofoam should work. PET bottles fully filled with water are nice for experimenting.
Pillows are usually filled with polly wadding which acts like absorber, so not suitable.

Why do you want to reduce the volume?
Your box volume is a good match to Alpha 10A.

 

[markbakk]

Did you close the port? In general, a closed enclosure sounds less boomy if it’s ‘too big’. And I think you’re listening to your room, less so your speaker.

 

[Davor D]

The speakers box are a little boomy, probably because the volume is to big for the speaker ?

Alpha 10A Qts is little high, reducing the box volume won't help
Try this:
Move speakers 1-1,5ft away from rear wall
Cut the subwoofer lower: 70-80Hz
Add 1lbs polyester wadding in each box, for absorption.
Sorry for this, but are you sure tone controls on your amp are off

And markbakk may be right, this could be your room acoustics issue

 

[Godi]

Yes Davor D , yes my room have serious acoustics issue, but as a renter, I can't do anything. My room is to small to move my speakers away from the wall. :-( But It's not that bad, I can live with it.

 

[Davor D]

Try to google "diy bass traps"
They can be very helpful in a small rooms and not so complicated or expensive to make

 

[AllenB]

Bass traps are not as effective until you have a large amount of them. Multiple subs will offer active bass absorption while taking up much less space.

 

[Godi]

My (not perfect) yet, layout of the crossover.

 

[Godi]

Cutting bord from Dollar Store, with felt under the inductor

 

[Davor D]

Layout looks good.
If its not too late, it may be more practical if you put input terminals in the middle and bass on the left.

Those are some serious hi-end coils, super low resistance.

 

[Godi]

Good idea, i will apply your suggestion to set the input terminals in the center, make sens.

 

[Godi]

Indeed, the inductors are very low in resistance ...
0.47mH 12awg, 0.10ohms DCR, 19mm H x 76mm D (Solen.ca)
0.33mH 12awg, 0.07ohms DCR, 19mm H x 76mm D (Solen.ca)

 

[Godi]

First one ready, woofer on the left, input in the center and tweeter on the right.

 

[Davor D]

Looks neat.
Electrolytic caps don't like heat. Move 22uF a little from resistor.

 

[Godi]

I think that I'm going to try that very soon ! 😉

 

[Godi]

Dosen't work ... ! ??????????

 

[Davor D]

I'am puzzled too. Layout looks correct on your pictures.

Have you removed the enamel before soldering the coils? Some enamel types don't allow direct soldering.
Also check for cold solder joints or possible shorts. Maybe something moved accidentaly during installation.

 

[Godi]

OK now, I found a cold solder that break in my hand, I resolder and every thing work ... 🙂 My mistake !