System Pictures & Description

Recently me and my wife refurnished the living room and there is now space for a home cinema system again. Material is 18mm baltic birch plywood, finished with high gloss varnish. Drivers are SB Acoustic SB19ST tweeter, SB13PFC midbass, 2x Reckhorn D165 subwoofers per tower. Crossover between tweet and midwoofer is 2,5kHz, 85Hz between midwoof and subwoofer. Total system is 4 subwoofer/speaker stands as a multiple distributed subwoofers, 5 identical speakers as mains. Overall system bandwidth is from pretty even from 30Hz to over 20kHz. The center speaker is on the TV stand. The receiver is Marantz SR5010.

https://i.imgur.com/wwEWn21.jpg
https://i.imgur.com/LFXfXPX.jpg
https://i.imgur.com/Npdcl7B.jpg
https://i.imgur.com/duI8Jvi.jpg
 
abomination made in good old diy spirit(from garbage xD), powered by slightly modified ebay tpa3116 2.1 and laptop psu. separate box for "midrange", piezo tweeter replaced with normal, car coax speaker with tweeter removed for bass.
:D:wrench: had fun making it, sounds interesting :boggled:
 

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Recently me and my wife refurnished the living room and there is now space for a home cinema system again. Material is 18mm baltic birch plywood, finished with high gloss varnish. Drivers are SB Acoustic SB19ST tweeter, SB13PFC midbass, 2x Reckhorn D165 subwoofers per tower. Crossover between tweet and midwoofer is 2,5kHz, 85Hz between midwoof and subwoofer. Total system is 4 subwoofer/speaker stands as a multiple distributed subwoofers, 5 identical speakers as mains. Overall system bandwidth is from pretty even from 30Hz to over 20kHz. The center speaker is on the TV stand. The receiver is Marantz SR5010.

https://i.imgur.com/wwEWn21.jpg
https://i.imgur.com/LFXfXPX.jpg
https://i.imgur.com/Npdcl7B.jpg
https://i.imgur.com/duI8Jvi.jpg
This looks awesome!
Much like my own system. I've built some speaker stands/subwoofers too, one on each front channel. Although they turned out a little too big. They might have been 10 - 15 cm lower in hight, or some 10 liter smaller in net volume.

They're an active sealed system, based around a Hypex nCore amp with DSP (11 biquads per amp channel) and a Peerless XXLS 12 driver. 41 liters net volume.

Mains are Dynaudio Special 25's, crossed over at 80Hz. Subs cross over at 120Hz. Integration between the two is phenomenal!

In theory the total system response should be flat to about 16Hz in room. Measurements cannot confirm that with certainty, but they do get pretty close to 20Hz with authority.
When I have enough time, I'll do some more measurements and tweaking.
 

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Slot loaded open baffle with 6x12" GPA 414 on both sides.

Box speaker with TAD 1201 12", TAD 2001 behind the waveguide, and T500 mkll on top.

4 amps; 2 x Nelson Pass F5 Class A
1 x Crown Class D, and 1 x Audiolab mPwr Class A/B

Fanless Windows PC with JRiver mediaplayer, Audiolense XO digital X-over and EQ.
8 channel USB interface from RME, Fireface UC.

513553d1539749436-bergfinns-tukle-hja-rne-img_20181014_172358-2.jpg
 
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@Bergfinn, cool, especially the digital part. Can you tell us about your experiences with all-digital filters ? Aren't you afraid of a sudden computer freeze or whatsoever anomaly.. and shooting suddenly bass waves into the tweeters too ? (Or do you employ some kind of safety measures for tweeters like e.g. a capacitor, limiting bass freqs way below XO freq ? Just as a safety measure).
 
Thanks, Vortex.
I started with DIY in summer 2016 with some OB mockups and cheap drivers.
I know nothing about passive filters, so I had to do everything with digital XO/EQ.
Learned alot from kind people here in a norwegian hi-fi discussion forum.
Later, I bought better drivers. I don't want to destroy my TAD 2001 and Fostex T500, so I have a capacitor behind both of them.
Haven't missed with sinesweaps yet. Maybe some day...

If I do something wrong in filter design, then it will play just two channels instead of eight....so it will play on channel one and two, where my bass towers are connected. So it is safe then.

I can strongly recommend Audiolense XO/EQ for those who don't doing passive filters. Easy to get good sound, and very tweakable. Sorry my bad english.

I think Mitch Barnett have a walkthrough with Audiolense on computeraudiophile.com
 
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Hi Bergfinn, great.. I'll give this program a closer look.

So this is a 4-way system if I'm correct and you use digital XO which means at the end you have 8 filtered channels (4 left, 4 right).

- Do you send this digital stream via 1 SPDIF cable into the Fireface UC ?

- It will be split into 8 physical channels within the Fireface ? (So this is also a DAC, preamp, ADC, all in one device).

- The Fireface UC has analog outputs. I assume here you're connecting them to your amps.
 
4-way, yes.
And yes, the Fireface is also DAC and preamp, and connected to the PC with USB.
I use all analog outputs to four stereo amps. 6 TRS outputs, and 1 stereo jack from "phones" on the RME Fireface.

I use JRiver as mediaplayer with hard drive playback, Spotify and Tidal streaming. You can also use eksternal devices and play them through the WDM driver in JRiver with this hardware setup.
Since I use FIR filters, I can't play DVD or look at TV because of too long delay. But I don't care, this is a music system.