Ideal listening setup?

[454Casull]

Spent a few minutes every day for a few months putting this together... it went through a lot of changes before I settled on this one.

And yes, I did do the math so that the each driver hit the minimum excursion needed to reach at least 109dB at 1m.

[454Casull]

Crap! The section headings aren't bolded anymore!

[454Casull]

Slightly updated

[454Casull]

Nobody interested?

[Bill Fitzpatrick]

Well, clicking on the attachment link fires up Acrobat which then procedes to dislike the attachment.

What's my problem?

[SY]

I get text totally unformatted, run together in a stream-of-unconsciousness wad resembling a Dr. Bronner's soap label.

[navin]

have you listened to this set up?

[Circlotron]

<+++Central Power Supply 1MWh vanadium redox power storage battery

Invented in Australia by a very smart woman.

[SY]

have you listened to this set up?

Listened? Heck, I can't even READ the damn thing.

[Circlotron]

Originally posted by SY
Listened? Heck, I can't even READ the damn thing.

<+++Room Design

Precision-leveled poured Ceramicrete foundation

Hy-Bor rebar-reinforced poured Ceramicrete rectangular room
_Replaceable 30mm aluminum wall facing set into Ceramicrete (for wall fastenings)

Cork flooring /w 8mm high-density chipfoam underpad
Deep-pile Saxony treated wool carpeting

25mm wall paneling over fiberglass batt-insulated staggered stud double-framing
_Wall paneling consists of gypsum facing, foamed aluminum structural member, rear bitumen coating
_Bitumen-coated aluminum I-beam studs /w parabolic hollow

Internal dimensions 3m x 4.8m x 7.2m or to scale

HVAC system through aerogel-insulated tubing

<+++Central Power Supply

1MWh vanadium redox power storage battery

Carbon aerogel ultra-capacitor bank /w gold-plated 6N silver leads, oil-cooled aluminum housing
_Capacity in megafarad range
DC-DC power converters (to audio equipment power supplies)
120V/60Hz digital AC reconstruction (to standard power outlets)

<+++Digital Equipment Basic Construction

Point-to-point foamed Teflon PFA-jacketed UP-OCC 6N silver wiring when applicable

Extruded copper enclosures
Cast bismuth enclosure shielding /w ground hookup (outdoor pond)

Pickup from power converters
High-capacitance filtering/storing bank /w copper housing
_Fast, low-impedance Teflon film capacitors /w rhodium-plated silver leads

Teflon capacitors, metal film resistors /w rhodium-plated silver leads

Avalanche photodiode inputs/sync from master clock
Laser diode ST outputs

<+++Master Clock

Vacuum-insulated hermetically-sealed oven-controlled crystal oscillator
_Synchronizes all devices through single-mode optical connections

<+++Base Station

IR receiver /w wired connection to electronic equipment, room lighting
Programmable voice control

Ergonomic handheld remote /w speaker/device selection, color LCD display
Master remote controlling ‘tablet’ /w color touchscreen LCD display

<+++Stereo Blu-Ray/DVD-A/SACD/CD transports

Separate outboard power supplies for motor drives
Kevlar-reinforced rubber belt-driven ultra-precise DC motors
DLC-coated Ti Beta CEZ perforated disc platters /w vacuum disc clamping
Vibration-isolated disc reading section

Non-feedback current-conveyor current-voltage conversion

Full 48-bit digital circuit resolution

Built-in 0X/8X16X/32X/64X upsampling (all channels) /w voltage waveform shaping

ECC DDR500 memory buffers
Expandable DIMM slots

<+++Digital Storage Bank

Infinite-cycle flash memory-based fiber channel RAID storage
MP3/WMA/AAC/WAV/FLAC/APE/copied DVD-A/copied SACD playback

<+++Digital Crossovers/Equalizers – one per amplifier

Butterworth/Linkwitz-Riley/FIR Hamming window filters
Automatic full-range phase/delay/SPL/room gain/W-frame resonance corrector
_Compensates for power compression over time
_Manual control /w presets
CF flash memory for response presets
64dB/octave band-pass filter at 15Hz and 32000Hz

Digital volume control

<+++Haven’t figured out how to power the infrawoofers so I’ll just say that each one should get a Pass Labs X1000 monoblock amplifier

<+++Digital Amplifiers - 1 per woofer, midwoofer, or tweeter

Adjustable “smoothing” filter – for poor recordings or harsher music

PCM upsampler to DSD /w 7th-order noise-shaping feedback loop

1-bit pulse width modulation amplifying stage
_128Fs switching frequency
_+/- 32V power rails
_Feedback loop to compensate for drop in voltage

<+++Dipole Infrawoofers – reproduces 16Hz and above

Bitumen-coated single-piece cast aluminum 2-driver W-frame

Damped skeletal HIP SiC chassis

// 4 arranged around listening position, 2 per W-frame
// Suspension-limited excursion at about 40mm p-p, BL curve flat to maximum excursion
// Diameter is about 45cm
// Voice coil former diameter somewhere between 20cm and 25cm
// Pole piece vent somewhere between 7.5cm and 10cm
// Qts is about 0.5
// Fs below 16Hz, above 10Hz
// Infrawoofer W-frame has at least 1000m effective path distance

Diamond-coated Be I220H-IG diaphragm
_Radially-ridged concave outer skin, triangulated inner structural support for greater stiffness, lower mass
_Inner triangulations integrated with diamond-coated voice coil former
_Accelerometer directs cone motion
Multi-layer Kapton-coated UP-OCC high-gauge 7N edgewound beryllium voice coil

Double progressive pleated fully-vented Nomex spiders
_One raised spider forward of voice coil, other spider behind voice coil
UP-OCC braided 7N silver tinsel leads (free-standing)

Copper-plated Permendur quadruple-T-gap pole piece
_Machined as mirrored DDD double-gap XBL2 (flux used twice)
_Narrow coil gaps filled with ferrofluid
Heavy copper rings above and below the T-shaped gaps
7N solid copper phase dome (oversized phase plug)

Copper-plated Permendur gap plates
_Rounded external edges
_NdFeB axially-magnetized disc magnets between gap plates, Permendur “columns”
__Stacked such that flux density between the two sets of gaps is equal

Titanium fasteners

<+++Hybrid dipole/monopole speakers

HIP SiC baffle /w rounded edges
_Extending-depth side panels for midwoofers, front baffle terminates over W-frame for woofers
_Minimum distance between plasma tweeter and midwoofer
_Midwoofer, tweeter horn not placed symmetrically on baffle to smooth out diffraction effects
_Woofer/tweeter baffle has at least 400mm effective path distance
_Woofer W-frame has at least 800mm effective path distance

[Woofers] – 2 per W-frame firing in opposite directions, from 40Hz upwards

// Suspension-limited excursion at about 15mm p-p, BL curve flat to maximum excursion
// Diameter is about 35cm
// Voice coil former diameter somewhere between 8cm and 10cm
// Qts is about 0.5
// Fs under 30Hz, above 20Hz

Damped skeletal HIP SiC chassis

Woven carbon fiber/epoxy composite straight cone /w integrated voice coil former
Multi-layer Kapton-coated UP-OCC 7N copper voice coil wire

High-compliance half-roll foam minimum-width diaphragm surround
Single pleated fully-vented raised Nomex spider /w butyl rubber edge termination
_UP-OCC braided 7N silver tinsel leads (free-standing)

Copper-plated Permendur double-T-gap pole piece
_Machined according to Adire Audio’s XBL2 principle
_Narrow coil gaps filled with ferrofluid
Heavy copper rings above and below the T-shaped gaps
7N solid copper phase plug

Copper-plated Permendur gap plates
_Rounded external edges
_N50-grade NdFeB axially-magnetized disc magnets between gap plates (saturates Permendur)
__Stacked such that flux density between the two gaps is equal

[Midwoofer] – from 100Hz upwards

// Suspension-limited excursion at about 6mm p-p, BL curve flat to maximum excursion
// Diameter is about 25cm
// Voice coil former diameter somewhere between 4cm and 5cm
// Qts is about 0.5
// Fs under 80Hz, above 50Hz

Damped skeletal HIP SiC chassis

Woven carbon fiber/epoxy composite curvilinear cone /w integrated voice coil former
Single-layer Kapton-coated UP-OCC 7N SCCW underhung voice coil

Flat foam ring diaphragm surround
Single pleated fully-vented raised Nomex spider /w butyl rubber edge termination
_UP-OCC braided 7N silver tinsel leads (free-standing)

Copper-plated Permendur single-T-gap pole piece
Heavy copper rings above and below the gap
7N solid copper phase plugs

Copper-plated Permendur gap plates
_Rounded external edges
_N50-grade NdFeB axially-magnetized disc magnets between gap plates (saturates Permendur)

[Plasma tweeters (1kHz – 32kHz)] – two per speaker for dipole operation
_Rear tweeter rolls off at 6dB/octave after 1.5kHz, front tweeter compensating

Kapton-coated UP-OCC 6N silver Tesla coil tuned to 1.5MHz

1.5% lanthanated spark electrodes
Spark chamber heated to assist decomposition of ozone

Constrained-layer steel constant-directivity horns /w copper mesh grilles (front/rear)
_Somewhere between 60x40 to 90x60 dispersion

<+++Cabling

HIP Si3N4 electrical outlets
_Self-cleaning rhodium-plated 6N solid silver contacts

[Power]

6-gauge UP-OCC OFC 6N 20° twisted conductors
_8-gauge UP-OCC OFC 6N ground
_Extruded PVC jacketing
_Stainless steel conduits for in-wall

[Optical]

Air-cooled high-powered laser diode transmitters
_Wavelength of 1310nm
_CNC-machined fused silica optics, sputtered silver reflective layer
InGaAs/Si avalanche photodiode receiver
_23.0um active area diameter, 1.0um absorptive layer thickness, 0.6um multiplication layer thickness
Lapped/polished FC/PC connectors

Single-mode glass fiber optic cable
_Ultra-pure fused quartz core/doped cladding, 8/125 sizing
_Extruded PVC jacketing
_Braided Spectra strength member
_Extruded PVC jacketing

[Bass speaker cable]

UP-OCC 6N solid silver conductors
_Triple-layer OCC 6N foil/braid/foil OFC shield
_Braided Spectra strength member
_Extruded PVC insulation
_5mm-thick bismuth nanoparticle-filled interference barrier
_Braided Spectra jacket /w NBR lining

[Treble speaker cable]

UP-OCC thin-gauge 6N silver conductors twisted around core
_Individual thin foamed Teflon PFA insulation
_Teflon PFA foamed core
_Triple-layer OCC 6N foil/braid/foil OFC shield
_Braided Spectra strength member
_Extruded PVC insulation
_5mm-thick bismuth nanoparticle-filled interference barrier
_Braided Spectra jacket /w NBR lining