justinsweber
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Posts posted by justinsweber
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The reply was dated Tuesday.
I wasn't disparaging of HK iron.
All that being said, I was trying to clarify my point... HK magic has more to do with is circuits brilliance that is transformers .
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Your reply seems confrontational?
Simple doesn't mean low quality, but straightforward.
Simple in this case does mean labor intensive.
The HK Cit II or Vs iron is not wholly unique but is high quality.
Mcintosh outputs are considerably more complex to wind.
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The Chorus are passive radiator set?
The Passive radiator designs are much more difficult get right... the Cornscala flavor is a more linear path... least as I understand it.
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Selling off my first pair of Skinny cornscalas.
Faital Horns... these are huge eliptical Tractrix Horns 1.4" for mid, 1" for HF.
B&C E10 for HF, Radian 745NEOPB for Mids.
LF/Wooer is Eminence 12"
Baffles were CNC cut from Dave Harris.
Cabs are Solid ply with extensive bracing/corner reflectors and mid plate tie-ins.
Front baffle and mid plate are dado'd into place.
Bottom had integrated riser with Threadcets
Finish is black Lacqure.
No screws, Everything bolds into place.
Crossovers are ALK Cornscalwals @ 500hz.
In room they play down to 35hz without issue... 96db.
Selling to make room. Give a call for questions, Im happy to answer.
Have $2900 invested.
Happy to ship... road fright is pretty reasonable.
16" wide, 17" deep, 34"tall.
Justin 949-636-9076
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YES! SPL and depth... they dig really deep.
JWC is really open and. I think if asked, he would extend.
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I do, but thats something you need to get from JC. I dont think he has made them public domain.
I will tell you, Ive owned a Jub Clone and a DBCornscala... these handily beat both. Insanely heavy when fully assembled.
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Just picked up Dave Harris latest update to his Eliptrac kits, gonna save a ton of time on finishing.
Dave says they perform as well as previous models, but he doubled the cuts to reduce finishing.
I think Ive sanded more pairs than anyone short of Dave and can tell you, doubling the cuts is magic.
The real question is weather to 2way as usual or build another 3way
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-Ive built 4 pairs of the JWC, give me a call to discuss.
Justin 949-636-9076
Al has designed a 3way crossover for this.
In short... the 12LFA from eminence is what youll want to use. and will extend upto your crossover point.
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The CSW450 was designed for me by Al. For a bit I was selling them. The CSW was aimed at taking a AP12-500 and an AP15 and marrying onto a single board. It’s a 12bd 2nd order on the LF. It’s a great crossover. I used to run AP12-500/ ES5600 the. The CSW450 and now the CSW. For my smallish roll the CSW plays better at my listening levels.
Of note. As with ALL AP crossovers. It’s optimized/set for the inductance and capacitance of the K33/15C woofer. If not using this woofer the CSW may make more sense.
Al has optimized a AP12-800 for me the uses the 12LFA.-
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I’ve built a la Scala 2 way without changing proportions and it was passive.
dave Harris/fast lane audio eliptrac with de750 crossed at 500hz. Alk ap12-500.
ive built lots of klipsch and klipsch inspired speakers. Thai was really special. No dsp was neeed. Had scale, speed and hammered.-
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Thanks everyone. I think this idea... cornscala with a heresy woofer has been explored before... tangent 5000.
the 12” seems significantly faster than my ported 15. Goes deeper too. I went cornscalawal as I like my low end a bit romantic. I’d bet these would be very articulate with an ap12. Alk has made an ap12-800 for me before that’s set for the 12lfa/k22.
common thinking would say it’s weak spot would be lf. That hasn’t been my experience. I had to pad the mids a great deal -17 or -16 as I recall. Turning the mids and the hf down was what was needed for my room and tastes but as Dave reminds me... I like the hf mellow compared to others. -
Thanks.
It was a request of a close friend. It feels like a better heresy and different but maybe not quite on level for of top tier cornscala. the bass being tighter and faster but not with same quantity.-
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Since I sold off my super heresy 2way (heresy box, big Faital horn) I had wanted to recreate it with some improvements.
box is ported... think tangent 5000 but better.
biggest horns I could muster... Faital eliptical tratrix horns.
Eminence lfa12 to harm... getting into mid 30s.
drivers are Radian on mids and B&C for hf.
Alk cornscalawal to round it all out.
Box had front baffle and rear back plate dadoed into place. All fasteners are 1/4-20. Super stout.
bass is really tight and digs low. Bass output is comparable to a Forte3 and mids/hf as good as the cw4.
best part is it fits in the room. Though the lf is rated at 94db. I was playing really happily with 3 watts.
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Really amazing Core Power 2ft cord. One of the best sounding power cords Ive had.
System changes require a longer setup.
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Dave still sells kits to build the eliptrac 400. He doesn’t offer plans. Lots of math involved between Dave and ALK to get it right.
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Selling my Deep Core 1800. I decided I needed another Equi-Core more. Does an amazing job. The knob in the rear allows your to vary the impedance between the ground and neutral. Think of it as a hum killing/black background creating knob.
4mo old. Looks and works flawlessly.
Paid $1295.$700 obo.
Justin 949-636-9076Deep=Core removes, EMI, RFI and most importantly DC from the line. DC is a major issue and almost all AC lines have some DC on them. It also has even better surge suppression. There is also a Contour Control on Deep=Core to match the power coming from your wall to the power supplies in your equipment.You plug Deep=Core into the wall and then Equi=Core (or any power conditioner) into Deep=Core. The pair makes a world class line Conditioner with surge protection.
The Deep Core 1800 is a multi-function power conditioner that re-defines the category. The Deep Core 1800 is designed to not only provide clean, spur free power but it also allows the user to optimize the power delivery interface via a user adjustment. The optimization of the power delivery interface can significantly affect sound quality as the power company is a major contributor to attributes such as poor noise floor and dynamic range of the system. The Deep Core 1800 can be used with almost any system configuration providing optimized power for both source components and power amplifiers. It will work as a stand alone device, in front of the Equi=Core 1800 or older 1200, 300 etc, or in front of any other power conditioner you may already own. However, it works best when used in front of a quality power conditioner, like the Equi=Core 1800 balanced power conditioner.
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Sold
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Upgrading to the separates.
No scratches. Flawless condition.... need to whipe my finger prints off the front 🙂
The Hint has been an incredibly good integrated for me... 1 year old. Only used to drive my Cornscalas.
$1600 Shipped.
Justin 949-636-9076
Parasound HINT 6 New Features
Burr Brown analog resistor ladder volume control
Dimmable front panel volume display
Updated USB receiver is plug-and-play with Windows 10 and Mac
An additional optical input (2 total)
Ball bearing supported solid aluminum volume knob
Programable default turn on volume setting
Favorite volume memory with remote control button
Increased phono stage gain for lower output cartridges
Improved Left/Right channel separation and balance tracking
Updated cosmetics with subtle gold highlights
Parasound HINT 6 Preamplifier Features
ESS Sabre32 Reference DAC (ES9018K2M)
Asynchronous USB 2.0 supports PCM up to 384kHz/32-bit USB input decodes Native DSD64, DSD128, DSD256 and DoP
DSD
Coax and optical inputs accept PCM up to 192kHz/24-bit
Analog bass management with high & low pass crossovers
Home theater bypass input for surround sound integration
Front panel subwoofer level control
Dedicated high current headphone amplifier (TI TPA6120)
Phono input for MM, MC and MI with 100 ohm or 47 kohm load
Front panel Aux input with automatic +12 dB gain stage
5 pairs RCA line level Analog inputs
1 pair XLR balanced Analog input
Balanced XLR and RCA left and right preamp outputs
1 balanced XLR and 2 RCA subwoofer outputs
Bass and treble controls with relay bypass from remote or front panel
Rear panel IR input and IR loop output jacks
12 Volt trigger output
Back-lit remote control with discrete buttons
0.5w standby power consumption meets Energy Star & EU specs
Parasound HINT 6 Power Amplifier Features
160 Watts x 2 @ 8 Ohms (RMS, both channels driven)
240 Watts x 2 @ 4 Ohms (RMS, both channels driven)
Power amp circuit topology designed by the legendary John Curl
Direct amplifier input to bypass preamp section
High bias class A/AB operation
Oversized shielded toroid power transformer
Dual-mono power supply and power amplifier
40,000uF power supply filter capacitance
Matched JFET input stages and MOSFET driver stages
12 high voltage/high current bipolar output transistors
Heavy-duty 24k gold-plated 5-way speaker binding posts
Over temp and short circuit relay protection
Power Output - Both channels driven (0.05% THD, RMS, 20Hz - 20kHz): 160 watts x 2 @ 8 ohms; 240 watts x 2 @ 4 ohms
Power Output - Both channels driven (0.9% THD, RMS, 20Hz - 20kHz): 180 watts x 2 @ 8 ohms; 270 watts x 2 @ 4 ohms
Current Capacity: 45 amps peak per channel
Frequency Response: 10Hz - 100kHz, +0/-3dB; 20hz-20kHz, +0/-0.5 dB
Total Harmonic Distortion (THD): 0.01 %, average listening levels; < 0.05 %, 160 watts x 2 @ 8 ohms
Interchannel Crosstalk: > 70dB at 20kHz; > 78dB at 1kHz
Signal to Noise Ratio - IHF A-weighted: Line in: - 103dB (input shorted); Digital in: - 106dB
Amplifier Damping Factor: 800 at 20Hz
Preamp Stage Input Sensitivity: 300mV in for 1V at Pre Out jacks; Total Preamp Stage Gain: 10dB; Max Output Unbalanced: 7 V; Max Output Balanced: 9 V
Power Amplifier Stage Sensitivity: 1V at Bypass/Amp In for 28 V at Speaker Out; Total Amp Stage Gain: 28dB
Phono Stage Sensitivity / Input Impedance: MM 41dB / 47kohms; MC 54dB / 47kohms or 100 ohms
High and Low Pass Crossover Slopes: 12dB per octave
Supported DAC Sampling Rates: USB: up to 384kHz / 32-bit PCM; DSD Native: DSD64, DSD128, DSD256; DSD over PCM (DoP) at 384kHz; Coax/Optical: up to 192 kHz / 24-bit PCM;
Digital to Analog Converter: ESS Sabre32 Reference ES9018K2M; 384kHz / 32-bit
USB 2.0 Controller: Savitech SA9227, 384kHz / 32-bit
Headphone Amplifier: Texas Instruments TPA6120A; Output Impedance: 10 ohms
Input Impedance: Unbalanced: 24kohms: Balanced: 100kohms per leg
Preamplifier Output Impedance: Unbalanced: 100 ohms; Balanced: 470 ohms per leg
Power Requirements: Standby: 0.5 watts; Idling power: 70 watts; Maximum: 750 watts; 110-125 VAC 60Hz or 220-250 VAC 50Hz; AC mains voltage is set on rear panel
Dimensions: 17-1/4" wide, 16-1/4" deep (with cables 17-1/4"), 5-7/8" high with feet (without feet 5-1/4")
Weight: 33 lb.
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Last bump
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BTW. Fully agree with the 45degree deflectors. Dave Harris was awesome and made for lemon request. He was super smart and back cut/relieved the inside corner as to allow it to mate even closer.
I liked for the reasons of positively locating the corner, deflecting and improved bracing. We orig started with 2x2 45deg deflectors but cut down while building the cabinets to find a Vance between size/performance. The deflects can eat space quickly.
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ES700 Schematic
in Technical/Restorations
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I don’t think Al made it public source. Might just purchase from him.