HiFi Heaven
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Posts posted by HiFi Heaven
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How do you have a "flat response system" without EQ for speakers, room, components?
You need to get a grip on acoustics. AudioTool will calibrate your ears & your room.
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I bought these for a Ham-Radio mag-loop antenna project that never materialized, so these rare vintage cables are now for sale.
#4 AWG stranded silver-plated copper conductors in clear PVC jackets with FULTON logo clearly visible on both 28'8" lengths.
Each cable weighs 8 pounds, measures 0.011Ω DCR for the ultimate damping factor for eliminating resonant bass overhang.
Listed elsewhere for $995/pair, happy to offer 20% discount to Klipsch Forum members.
Please email for hi-res photos that I can't seem to post here.
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Glad you sold them, Mike. Too bad you didn't know - and the buyer didn't care - about what's behind the curtain.
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Series Z1 Z2 or Z3? What AWG size? Pure copper or CCA copper-clad aluminum? Thanks!
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Gorgeous! Hope you like BASS!
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KG 4.2's have MUCH more bass output than any Heresy. Also the .2 series have passive radiators for better bass extension than the port on the .5 models.
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Hi Camplo - so -30dB would be 1% distortion? Did I get that right?
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Why don't you kids just get AudioTool and some kind of 10-12-15-31 band EQ?
Seems like a lot of work to swap X-over caps vs. nudging a slider on a graphic EQ.
But WTH do I know? Some guys like swapping 12AX7 tubes until they pass out.
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Back to Favorite Receivers topic...
McIntosh MAC-4100 was amazing, fabulous in every way.
Maybe I can steal one here from you guys? Hmmm...
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I use AudioTool 61-band RTA on my Moto/Lenovo devices w/pink noise to EQ any system, any room.
You opinionated devotees of commercial parochial EQ schemes that don't work should try my ideas.
Flatten 40-2000, roll off -3dB/octave above 2KHz, add Fletcher-Munson Loudness below 100dB.
Paul Klipsch got it, first guy to understand loudspeaker voicing for living rooms, not auditoriums.
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We subjectively prefer the louder of 2 speakers in A/B comparisons, so equal-volume comparisons are mandatory.
Back in 1972, ADVE\T built a slick speaker switcher device for Sound of Music which I dubbed "The Lie Detector".
Allowed 2 of 8 stereo pairs of speakers to be selectively A/B compared at the same volume because it switched in
preamp-level screwdriver trim pots in the signal path to attenuate each speaker to match SPL in the listening room.
Very interesting when we compare sonics instead of decibels.
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Agreed! Speakers are mostly linear transducers at 1% (-20dB below) rated power.
Distortion rises exponentially over 10% (-10dB) as moving parts become non-linear.
Gain compression can often reach 6+dB at full power, when 75% is wasted as heat.
The trick is to juggle your budget, room space, and Fletcher-Munson until you smile!
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KLF-20's are remarkably better than KLF-10's - amazing 3D projection in stock form - give them 200 watts and stand back!
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Sealed systems can be EQ'd very low with good design. Bag End InfraSub 18 goes to 8 Hz, limited by cone excursion.
Vented systems have 3dB more output down to box tuning frequency. 30 Hz includes 99% of musical frequencies.
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MAC-4100 has 30 Hz EQ knob! I had one briefly, very well behaved controls, PowerGuard limiter is a plus if you rock out!
One just sold on Minneapolis CL for $800. Wish I was the buyer...
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Measure with AudioTool 1/12-octave RTA ($8) and call me in the morning.
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... what might take months. Use AUDIOTOOL on your phone or tablet to see the audio spectrum w/ 12 bands per octave.
Have a blast, tell us what you learn in the process!
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Hello Dave -
Any 50W L-pad will do the job for home listening. You are only dropping 9dB, at a few watts max.
Your 150W HF driver (?) is made for ballpark PA systems which are tri-amped, not for passive systems.
If you insist on using it consider electronic crossovers where you can play with levels by spinning a knob
instead of endless experimenting with resistors, capacitors, driver phasing & time-correction. You can do
in 10 minutes
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Woofer looks like a Jensen Flex-air from the late 1960's - decent woofer in a large box - I had a pair in the Rectilinear III's way back.
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Remember DAMPING FACTOR is halved when bridging any amplifier, so even with 2X the power, you have 1/2 the control over the woofer.
Some old tube amps (Scott?) had Damping Controls that actually inserted series resistance to allow woofers to boom away undamped!
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Howdy Juniper - and all the ALTEC fans here that have graduated to Klipsch for home listening!
ALTEC 604's are nearfield Monitor Speakers, never intended or voiced for home music playback.
ALTEC 604-HPLN (High Power Less Network) had 421 8Ω woofer LF + 16Ω HF diaphragm, so the
Sound 80 mix-masters could achieve 110+dB at the console. Those were the days! I was there.
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AudioTool by J.J.Bunn. 1/12 octave RTA, RT60 on a handclap, sine sweep & pink noise built in.
Amazing for $8! Instructions are a short course in Audio Engineering. Android & iOS versions.
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Hard to beat these amazing 60° x 120° bullet horns with 3.3uF 1st-order crossover caps ready to go for $30!
PYLE PDBT78. Hot enough for ALTEC 418B's @ 100dB/w, might have to pad them down for your Heresy's...
WTB JBL E-145-8 woofer
in Garage Sale
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I had the same problem with a JBL E-145-8 in my JBL 4628B's - turned out it was a bad surround, a hairline split that could have been repaired or replaced.
I had it reconed by the MN Master of JBL, Bill Batson at Metro Sound in St. Paul. He's done JBL repairs for 30+ years, huge inventory of vintage parts, please tell him I said HI!