SandS Posted February 28 Posted February 28 When I moved house i had to build a new HT. I have Seaton Catalyst for my mains behind a AT scope screen. When setting up the new room. One of the Catalyst fell off the shelf and got damaged, so for a long time i had no centre speaker in the new HT and run in phantom centre speaker mode. I decided to build my own, Red Spade Audio design. Years ago i sold my Seaton Submersive and built two 15” folded horn subs, Red Spade designed for the room with Behringer EP4000 amp and mini DSP. I was pleased with my new woodworking skills and very impressed with the sound. I then built four surround speakers, Red Spade 8” coax. And then four Atmos with the same 8” coax drivers. In the new room I couldn’t fit them in the ceiling like in the old HT so built 45 degree cabinets to mount where the wall meets the ceiling. I used the drivers and crossovers from old cabinets. So now i have a 7:2:4 system all my own build. First picture showing all the braces and mock up of cabinet. Red Spade AV12HP. Two 12” woofers, like the Cat 12”s. 5
SandS Posted February 28 Author Posted February 28 (edited) Showing where the waveguide and the two 4” ports will go. Edited March 1 by SandS spelling
SandS Posted February 28 Author Posted February 28 The cabinets a a bit taller than the Cat 12’s at just over 1 metre.
SandS Posted February 28 Author Posted February 28 Start of glue up, you never have enough clamps, didn’t have one deep enough to reach the centre of brace. A solid bar is quite heavy. 1
SandS Posted February 28 Author Posted February 28 Cut bits of mdf to locate the braces and keep them square while glueing.
SandS Posted February 28 Author Posted February 28 The baffle is 18mm mdf. And a 6mm mdf glued together. 2
SandS Posted February 28 Author Posted February 28 Shaped the hole for waveguides by hand on bobbing sander.
SandS Posted February 28 Author Posted February 28 The crossover and compression driver for waveguides. 3
ICUToo Posted March 1 Posted March 1 19 hours ago, SandS said: When I moved house i had to build a new HT. I have Seaton Catalyst for my mains behind a AT scope screen. When setting up the new room. One of the Catalyst fell off the shelf and got damaged, so for a long time i had no centre speaker in the new HT and run in phantom centre speaker mode. I decided to build my own, Red Spade Audio design. Years ago i sold my Seaton Submersive and built two 15” folded horn subs, Red Spade designed for the room with Behringer EP4000 amp and mini DSP. I was pleased with my new woodworking skills and very impressed with the sound. I then built four surround speakers, Red Spade 8” coax. And then four Atmos with the same 8” coax drivers. In the new room I couldn’t fit them in the ceiling like in the old HT so built 45 degree cabinets to mount where the wall meets the ceiling. I used the drivers and crossovers from old cabinets. So now i have a 7:2:4 system all my own build. First picture showing all the braces and mock up of cabinet. Red Spade AV12HP. Two 12” woofers, like the Cat 12”s. Great project- congrats on your work, it looks terrific. Did you cut the braces or have them CNC'd? They look perfect! 1
SandS Posted March 1 Author Posted March 1 I nearly bought a cnc but just spent a fair bit on 2 knee replacements. My next toy is a 3D printer. So cut on table saw and band saw. The square holes I drilled with big forstner bit and set up stops on router table and made square. Was easier than i thought. 2
SandS Posted March 1 Author Posted March 1 To cut the 100mm holes for ports on this router with home made circle cutter i had to modify with 3D printed part that’s longer than the Triton part that come with 1
SandS Posted March 1 Author Posted March 1 Compression drivers fitted to waveguides, i was surprised how heavy they were. Much heavier than the ones in the AV8’s i built for my sons small HT. Still awesome sound. i used threaded furniture inserts with cap screws for the wave guides like for the woofers
SandS Posted March 1 Author Posted March 1 But needn’t had bothered as I went with DuraTex. DuraTex Speaker Cabinet Texture Coating Roller Grade is brilliant stuff. Goes straight on timber. 6 1
SandS Posted March 1 Author Posted March 1 I built 2 cabinets to go each side of centre speaker to form a baffle wall. 100mm of poly and left back off.
SandS Posted March 1 Author Posted March 1 Underneath are the folded horn subs, 2.4m long, 700 high and 600 deep. 2
SandS Posted March 1 Author Posted March 1 Worked out well. They sound amazing. Useing a Tonewinner 5 Chanel amp and had to turn down Yamaha avr from start setting of -20 that i set for Catalyst (with 2000 watt tri amp in each one.) as it was too loud, and I usually crank it up… 2
SandS Posted March 1 Author Posted March 1 While i got camera out, the 3m banner on electric roller in front of screen wow 2007 I got the banner when i went from 100” 4:3 screen to AT scope in last HT 2
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