Hi, I've posted a photo of the living room here.
Recently I finished my in-room system and thought I post some stuff before I erase everything.
First, the picture of the room. It is messy but I tried my best
(I tried to cover the mess but it looks worse )
jbl 2384,2452h with bex4008, audyn 47uF capacitor, and mundorf 27ohm resistor.
TD18h+ in 90 something liter sealed box. (The port on top is nothing, I just keep it there to save space.)
B-52 waveguide with peerless 2544r00, and mills 30ohm.
JBL L112 as woofer box. I pulled the woofer line out through the port.
Two basstrap. Ten 1*2m 24K50T polywool tied together using packaging tape. Cause it's easier than handling wood.
0.45*1m 48k50T polywool. 6 in front, one on top and sides. Two at back. And between wall and speaker.
Room
And more about the system
Marantz mm8077 and Behringer 1820. Cables are Canare and Neutrik.
There is an audible hiss from the amp. So I use serial resistors for the 8 ohm CD. Even with resistors hiss is still there. Cheap icepower from aliexpress did better than this
The bex4008
950$ each from SpEx. Price wasn't like this when I first planned this speaker
(The pictures are blurred cause you can see me from the original pictures... my mistake)
The rims are thinner than the original Ti diaphragm. So when you close the back chamber. It goes like this.
There is a tiny gap there.
The O-ring mentioned in the AVSF is for this I guess.
I have no such thing. So an easier way is to flip it.
Yeah, I can live with this.
Finally, the measurements.
2452h, bex4008, .5 inch spacer, 2384 horn. Umik about 60cm far. No dsp, 47uF cap, and 27ohm serial resistor. I pressed estimate IR in rew.
Not gated.
For durability, I painted the MDF spacer with duratex than sanded it for a smooth connection to 2384. So the throat may be a tiny bit smaller than 1.5inch.
So much better than the ribbed Ti.
The minimum crossover given by BW is 1000hz 12dB/oct. But it can dig dipper (and it should, it is 4 inch!)
Corrected with crossover for tweeter and woofer using rephase.
Woofer measured and corrected from listening position. Polywools do nothing for that disastrous dip
It is 96dB LR in the graph. But I changed it to brickwall cause I don't know how I can measure and correct phase for smooth overlap.
Sound is OK. Tight and energetic with some music, but hurts my ears with some music. I think it could be better but I don't know what more to do, so this is the end.
It was fun building the system. It is the system I dreamed, big woofer, big beryllium, big horn, and big amp
Thanks for reading.
Recently I finished my in-room system and thought I post some stuff before I erase everything.
First, the picture of the room. It is messy but I tried my best
(I tried to cover the mess but it looks worse )
jbl 2384,2452h with bex4008, audyn 47uF capacitor, and mundorf 27ohm resistor.
TD18h+ in 90 something liter sealed box. (The port on top is nothing, I just keep it there to save space.)
B-52 waveguide with peerless 2544r00, and mills 30ohm.
JBL L112 as woofer box. I pulled the woofer line out through the port.
Two basstrap. Ten 1*2m 24K50T polywool tied together using packaging tape. Cause it's easier than handling wood.
0.45*1m 48k50T polywool. 6 in front, one on top and sides. Two at back. And between wall and speaker.
Room
And more about the system
Marantz mm8077 and Behringer 1820. Cables are Canare and Neutrik.
There is an audible hiss from the amp. So I use serial resistors for the 8 ohm CD. Even with resistors hiss is still there. Cheap icepower from aliexpress did better than this
The bex4008
950$ each from SpEx. Price wasn't like this when I first planned this speaker
(The pictures are blurred cause you can see me from the original pictures... my mistake)
The rims are thinner than the original Ti diaphragm. So when you close the back chamber. It goes like this.
There is a tiny gap there.
The O-ring mentioned in the AVSF is for this I guess.
I have no such thing. So an easier way is to flip it.
Yeah, I can live with this.
Finally, the measurements.
2452h, bex4008, .5 inch spacer, 2384 horn. Umik about 60cm far. No dsp, 47uF cap, and 27ohm serial resistor. I pressed estimate IR in rew.
Not gated.
For durability, I painted the MDF spacer with duratex than sanded it for a smooth connection to 2384. So the throat may be a tiny bit smaller than 1.5inch.
So much better than the ribbed Ti.
The minimum crossover given by BW is 1000hz 12dB/oct. But it can dig dipper (and it should, it is 4 inch!)
Corrected with crossover for tweeter and woofer using rephase.
Woofer measured and corrected from listening position. Polywools do nothing for that disastrous dip
It is 96dB LR in the graph. But I changed it to brickwall cause I don't know how I can measure and correct phase for smooth overlap.
Sound is OK. Tight and energetic with some music, but hurts my ears with some music. I think it could be better but I don't know what more to do, so this is the end.
It was fun building the system. It is the system I dreamed, big woofer, big beryllium, big horn, and big amp
Thanks for reading.
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