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  #1  
Old 09-08-2018, 12:10 PM
Soundmig Soundmig is offline
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Default Went Active: Wow!

So, I've had this nice Bryston 10B-LR sitting around for several years (17 to be exact) and have not really used it much. I sent it to Bryston in 2012 (before warranty ran out) and they went through it and brought it up to 2012 standards "free of charge" (gotta love Bryston!).
Anyway, I like to build my own speakers and my current iteration uses an OB 12" GRS driver (Great OB driver btw) (40Hz to 151Hz active x-over with DSP), a periodically loaded vifa/peerless 4" mid-bass driver (151hz to 2.8K) and HiVi dome tweeter from 2.8K to a bit past 20K. X-over between 4" and tweet is passive 12db/oct (electrical) and about 18dB/oct acoustical. Since I recently bought a small third amp (for tweeters), a Parasound Zamp V3, I decided it was time to go active, and I put the Bryston in for the x-over vs. using passive coils and caps on the 4" /tweet combo. The cards that I have for the 10B-LR are 800 Hz and another set at 2021Hz. Since the Fs for the tweeter is 1000Hz, I surmised that the 2021Hz x-over at 24dB/oct would be safe. (The HIVi tweeter is very smooth from about 1800 to 20K). The "time" differential between the Vifa 4" and the tweeter is 25mm, so my tweeter is recessed by 25mm relative to the 4" mid-bass.
Quick Aside: before doing the active crossover implementation, I tried the Z-amp in place of my beloved MC modified Hafler amp to drive the 4"/tweet combo .... boy was I surprised. I was skeptical of the rave reviews on this little 45 watt/ch amp, but man is it good. As natural and sweet sounding as the Hafler but without the mosfet haze (slightly better detail and definition/nuance) - call me shocked, but this little amp delivers!
Anyway, to hook this all up I had to build a cable that would connect my Freya pre to drive the inputs of both the Bryson X-over (driving amps that feed the 4" and the tweeter) and the DSP xover/controller that I use to drive the 12" (down to 40Hz) and both subs (below 40 Hz). For that I used silver clad copper Switchcraft XLR's (2 Females to 4 Males - Y configuration) and DH Lab pure silver 23g solid core IC cable soldered up using TRT Wonder Solder. Love that DH lab solid core silver cable
So I now have the system set-up so that all of the actual x-overs are active. There are some passive components as there is baffle step compensation on the 4" mid-bass and very large Audyn Q4 capacitors keeping low frequency energy out of the 4". There is also a 10uF Film cap in series with the tweeter to protect from any turn-on/off LF bumps.
It took a bit of work to get the driver levels and integration to "lock-in" but now that has been achieved (with tons of cables going everywhere) I am well pleased by how much better the active x-over sounds. The soundstage (which was already very very good) is deeper and the subtle timbre cues on things like Bassoon, Bass Trombone, snare drum, saxophone, etc. are more evident and more "relaxed" or natural sounding. I was fearful that adding another piece of electronics between the pre and amps would introduce glare or other unwanted artifacts, but the Bryston is very transparent and the "addition" of it to the circuits is not at all "evident". I guess that I should have known that such a beast from Bryston would be "transparent", but I'm always concerned when adding "even more" pieces to the signal path.
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Main System: Pre-Power; Schiit Freya w/tung sol 6SN7's, Hafler 220 (modified) mids, Parasound Zamp V3 on tweets, Adcom 555 - main woofers. Digital; Alien R3, iFi USB, Schiit Gungnir MB. Analog;Well-Tempered Classic, Monster Alpha 2 (rebuilt by SS), PS Audio GCPH. Bass DSP: Behringer DCX2496. Power: RGPC. Mains; 1) Home built with Vifa-Peerless and HIVI drivers:Active Crossover - Bryston 10B-LR. Subs; Energy 10.3, Tannoy CMS-110B
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Old 09-08-2018, 03:05 PM
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Masterlu Masterlu is online now
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Nice! looking forward to going Active w/ Bryston gear very soon.
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MX136, MC1.2KW(10) MC2KW(2), MCD1100, MS750(2) MVP881, C1000C/P/T, MPC1500, HT-2 SUBS(2) HT3F(2) WS350(2) XRT2K, XCS2K, XR27(2) XCS350(2) PS AUDIO PPP(8) RGPC 1200(20) RGPC POLE PIG(4) JL GOTHAM SUBS(2) SONOS ZP90-W4S MOD, LUMAGEN RADIANCE SCALER, SONY VPH-G90U PROJECTOR, SVS SCISSOR LIFT, STEWART STUDIOTEK 120" MOTORIZED SCREEN, ASC ACOUSTIC PANELS & BASS TRAPS, CINEMA-TECH SEATING, WIREWORLD PLATINUM STARLIGHT HDMI, GOLD ECLIPSE CABLES & PLATINUM ELECTRA PC'S
Reference System: ACCUPHASE A250 MONOBLOCK AMPS, C3850 PRE-AMP, DP950 CD/SACD PRECISION TRANSPORT, DC950 PRECISION DIGITAL PROCESSOR, DG-58 DIGITAL VOICING EQUALIZER, T1200 FM STEREO TUNER, PS530 POWER SUPPLY, SONOS ZP90-W4S MOD, HRS-SXR CUSTOM 4V-4V RACK w/ M3X 1921 SHELVES, TAD REFERENCE ONE MK2 LOUDSPEAKERS, WIREWORLD PLATINUM CABLES & PLATINUM ELECTRA PC'S
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MX150, MC501(2) MC1.2KW(10) MC2301(2) MR88, MS750(3) MVP881, MCD1100, MDA1000, C1000C/P/T, MPC1500, ESOTERIC K-01X 30th ANNIVERSARY (BLACK) SACD/CD PLAYER, G02-X CLOCK, HT3F(2) XRT2K, XCS2K, XR27(2) OPPO-BDP95, PS AUDIO PPP(8) PUREPOWER 1050(4) RGPC 1200(15) JL GOTHAM SUBS(2) JL FATHOM F113 SUBS(4) SOUND ANCHOR SUB STANDS(2) LUMAGEN RADIANCE PRO SCALER, SONY VPH-G90U PROJECTOR, STEWART STUDIOTEK 120" SCREEN, SONUS FABER STRADIVARI, SILENZIO, SONOS ZP90-W4S MOD, BRYSTON BHA-1, ASC ACOUSTIC PANELS & BASS TRAPS, FORTRESS SEATING, WIREWORLD PLATINUM ECLIPSE CABLES & PLATINUM ELECTRA PC'S.
Analog Rig: CLEARAUDIO INNOVATION WOOD w/ OUTER RING & CLAMP, UNIVERSAL ARM w/ Da VINCI' CART, 2nd UNIVERSAL ARM w/ GOLDFINGER STATEMENT CART, KLAUDIO RCM, HRS-MXR REFERENCE 4V RACK-GLOSS BLACK w/ M3X 1921 SHELVES, AESTHETIX RHEA SIG PHONO-PRE, PS AUDIO PPP, RGPC 1200, WIREWORLD PLATINUM ECLIPSE CABLES & PLATINUM ELECTRA PC'S
Reference System: BURMESTER 911MK3 AMP(3), 088 PRE-AMP, 089 CD PLAYER, 100 PHONO PRE-AMP LOADED, 948 POWER CONDITIONER, AVID ACUTUS REFERENCE SP TT, GRAHAM PHANTOM II SUPREME ARM, BENZ MICRO LP-S CART, ESOTERIC GRANDIOSO P1/D1 STACK, G01X RUBIDIUM MASTER CLOCK, N05 NETWORK PLAYER, SILENZIO, HRS-SXR CUSTOM 2V-3V-2V RACK w/ M3X 1921 SHELVES, STILLPOINTS, SONUS FABER AIDA SPEAKERS IN RED VIOLIN FINISH, JL FATHOM F113(2) SOUND ANCHOR SUB STANDS(2) ASC ACOUSTIC PANELS & BASS TRAPS, GIK PICTURE PANELS, PS AUDIO P10, WIREWORLD PLATINUM CABLES & PLATINUM ELECTRA PC'S

Library System: ESOTERIC GRANDIOSO SYSTEM M1 MONOBLOCK AMPS(2), C1 LINESTAGE PRE-AMP, K1 CD/SACD PLAYER, G1 MASTER RUBIDIUM CLOCK, E02 PHONO-PRE, SILENZIO, SONOS ZP90-W4S MOD, AERIAL ACOUSTICS 20T V2 SANTOS ROSEWOOD, AERIAL SW12 SUBS SANTOS ROSEWOOD w/ BASES(2), CANTON REF K1, VPI HRX TT w/ SDS POWER SUPPLY, ORTOFON CADENZA BLACK CART, FURUTECH SILVER ARROWS PHONO CABLE, KLAUDIO RCM, SHUNYATA PS8, RGPC 1200(2) STEVE BLINN COMPLETE CUSTOM RACK, ASC STUDIO TRAPS, WIREWORLD PLATINUM ECLIPSE IC'S & PLATINUM ELECTRA PC'S
Bryston/Esoteric System: ESOTERIC C02-X PRE-AMP, P-02X TRANSPORT, D02-X DAC, G02-X CLOCK, BRYSTON 28B CUBED MONOBLOCK AMPS, BIT-15(2) AMR-DP777-SE DAC, SILENZIO, TAD REFERENCE ONE MK2 LOUDSPEAKERS, QUADRASPIRE RACK, WIREWORLD PLATINUM ECLIPSE IC'S & PLATINUM ELECTRA PC'S
Accuphase/Canton System: ACCUPHASE E-650 INTEGRATED, DP750 CD/SACD PLAYER, T1200 FM STEREO TUNER, PS530 POWER SUPPLY, CANTON REF K3, CANTON REF K5, SILENZIO, HRS MXR 4V REFERENCE MAHOGHANY RACK w/ M3X 1921 SHELVES, WIREWORLD GOLD ECLIPSE IC’s & PLATINUM ELECTRA PC'S

New Bryston Active System Coming Soon...
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  #3  
Old 09-13-2018, 08:30 PM
Formerly YB-2 Formerly YB-2 is online now
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