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* K=1000. PR=pair. PTC=partial trades considered. AP=as pictured. ?=FAQ.
MissionAllegroSound has been dedicated to the
accurate recording and reproduction of
acoustic music for well over ¼ Century.
For those who value ears-on experience,
AllegroSound is "hear" to assist you.
for AllegroBio 
Featuring* AllegroQC™ with 37+ yrs experience.
* Safe-packing. Trust your purchase to
one who knows & cares to pack it right.
World-Wide Shipping
ConditionSome be 10~60 yrs old with imperfections,
non-functioning lamps, old capacitors, etc;
NO "mint", "minty", "perfect", "excellent".
AllegroGrading™ : 5 = New-In-Box,
4 = VeryGood, 3 = Good, 2 = Fair, 1 = Poor.
All pre-owned/used unless otherwise noted.
See Pics, MainsVoltage, Terms below.
PicsPics are shown for display purposes
& may not represent exact condition;
text trumps pics - read description
and email if you need clarification.
Mains Voltage & What To Do About It
220~240 Vac
PricesFrom computer, place your pointing-arrow
ON the rotating $-sign below each listing;
price will pop up within 2 or 3 seconds;
if not, Click "HELP" in the floating Menu >>>
* all prices U.S. currency f.o.b. Los Angeles, California USA.
* prices without deposit subject to change without notice.
* AllegroLayAway™ with 30% non-refundable deposit.
* AllegroTradeUP™ with your approved TRADE-IN.
Trade-insTrade-in & purchases are not final until received,
inspected, tested and approved by AllegroSound.
Items failing to meet described condition will be
returned at customer's expense plus $50 min fee
for inspection/testing; additional fees may apply.
Terms & ConditionsEquipment is carefully inspected, cleaned,
variac'd, tested for dc-offset & auditioned
in ref system before it leaves our facility.
Quality work with TLC takes quality time;
I work at my pace & have orders ahead
of yours; item will ship when testing is
completed and packed for safe transit.
Suitability sole responsibility of Buyer.
Not responsible for errors/semantics/etc.
All items subject to prior sale or no sale.
Prices subject to change without notice.
All equipment as-is without warranty.
All sales f.o.b. Los Angeles California;
all matters and costs beyond this point,
incl, but not limited to, packing, freight,
duty, taxes, fees, are sole responsibility
of Buyer. All sales final. No refunds.
Add 8.75% SalesTax in California.
SPEAKERSQuote from departed Fi Magazine Jan-Feb 1997 Vol.2 #1:
"...I played a spectacular performance of Shumann's Andante and Variations by Martha Argerich and friends, EMI 5 55484; about two minutes into the piece, a solo French horn call is mimicked by the ensemble of two pianos, viola & cello; on this system with different, more expensive speakers, I thought that passage was played by two horns−quite a feat since only one horn was present; when I replayed the piece through the RS's, it became obvious that I was hearing the other instruments imitating the horn call." AllegroSolution: If your speakers are not able to differentiate piano and strings from horns, it's time to upgrade!
fabled George Augspurger horns,
all-wood construction, 800Hz,
outperforms the usual suspects,
performs best with TAD TD-4001
but can be used with any driver.
(or, you could pay 2x more for a
new pair of TAD TH-4001 horns)
hot-setup surround speakers!
Bose 901 Series V Direct-Reflecting spkrs
with original 901 Series V Active Equalizer,
walnut. Hot-setup surround speakers!
Bose 901 Series V Direct-Reflecting Spkrs Transform your QUADs into SuperQUADs
Crawley NHT Trans-Line SUBS (2),
fabled NHT-1259 12" super-woofer,
outperforms larger-heavier-costlier subs,
24-18-14", horizontal (low-profile) or vertical
(small-footprint) placement, very manageable
at 45#, 5-way posts, black w/oak side inlays,
doubles as stands for QUAD ESL 57-63-988,
includes sweepable 24-db/oct XLR-Bal xover.
* the acoustic of the recording venue is "encoded" in the
A minus B difference signal; this cannot be "decoded"
with a single mono sub; you need Left & Right ch subs &
a fast-cut-off xover to prevent interference with the main
spkrs; the common 12db slope won't cut it (pun intended).
Crowley NHT-1259 Trans-Line subs 
since 1927.
the one and only original Project K2
fabled JBL Project K2 S9500 #194A/B
(the original and ultimate Project K2)
simulated-point-source loudspeaker,
small-footprint, modular construction
(heaviest section is pedestal at 113#),
inspired engineering by Greg Timbers,
tour-de-force execution by JBL, 98db/w/m.
"On a scale of 1~10, these are a 12."
—Andre Perreaux, E-Speakers.com
(or, you could pay more for new pr of non-point-source,
non-modular, DD66000 Everest & rent a forklift & crane)
JBL Project K2 S9500
JBL Project K2
JBL K2 S9500
JBL S9500
JBL K2 * note: above K2 links go to same info; click any one.
since 1927.
JBL Signature D216 drivers,
SET-friendly 16 Ohms,
c.1960, need reconing.
since 1927.
fabled JBL LE-14H woofers,
4-inch voice-coil!, 8-Ohms,
one of JBL's finest drivers,
combines the best qualities
of 12-in and 15-in drivers.
surrounds need replacing
(do-it-yourself for $20/pr).
since 1961. a Laurie Fincham design.
fabled KEF Reference Series R-107 c.1986,
3-way, dual 10-inch force-cancelling woofers
with coupled-cavity loading eliminate coloration
from vibration and floor-boundary that plagues
most other subs regardless of cost, dedicated
equalizer with adjustable Q enables matching to
ss or tube amps & enables placement in virtually
any location in any size room, matched-walnut,
small-footprint, rotatable & removable heads.
Bi-amp AllegroMods™ & Bal-Xover included.
* 3 pairs available for home-theater or studio.
* woofers need new surrounds - diy kit is $80.
♥ "Music emerges from the 107 like ripples in a clear mountain lake.
There is no sense of strain or stress, even on very loud passages.
Vocal-range magic of Spendor BC1 & SP1 is present here in full force.
Voice is reproduced very naturally, without any coloration.
Neither are instrumental timbres slighted in any way, and
harmonic accuracy is preserved up and down the audio bandwidth.
String fundamentals and overtones are convincingly reproduced,
and woodwinds possess excellent clarity and detail, while brass
has its proper bite, without gratuitous brightness or harshness.
With the right electronics, musical textures are fleshed out with a
convincing mixture of soft & hard, sweet & brash." —DO/Stereophile.
♥ "This remarkable speaker represents a challenge to the increasing
performance standards being set by large panel speakers, matching
the best of them in terms of both bass power and extension, while
at the same time conceding little in terms of coloration levels. In fact,
the KEF beats a number of the panel models in such fundamental
areas as tonal balance and response uniformity." —MC/Stereophile.
♥ "Recommended as one of the few full-range dynamic loudspeakers
that I have experienced to touch the soul, not just of the music,
but of the listener." —JA/Stereophile.
• above quotations pertain to full-range operation with a
single amp; bi-amp AllegroMods™ with tuneable electronic
crossover (included) allows a solid-state amp to drive the
woofers directly, and a small ss or tube amp to drive the
MF/HF head, significantly improves performance.
KEF R-107 R107 loudspeakers 
since 1975.
Zb103/3 + AllegroMods
speakers are supposed to stop when the music stops;
only two types of transducers accomplish this; plasma
(i.e., Acapella High Violoncello II, 5kHz Fc, $80k/pr)
and the Manger MSW bending-wave transducer...
fabled MANGER Zerobox 103/3 modular
spkrs featuring Manger MSW/3 "tri-head"
with 3 MSW bending-wave transducers
allowing the main/front MSW to perform
optimally over 7 full octaves 160Hz~35kHz
with rise-time of 13μs & virtually no ringing!
(repro of piano and brass is a revelation,
outperforming even the Quad ESL-988,
which few speakers at any price can do),
91db/w/m, 5 Ohm linear-Z from 350Hz on up.
Matching sealed-box bass-bins with twin
10" Vifas extend the magic to below 30Hz.
Bi-amp AllegroMods™ & Bal-Xover included.
"Hear" is what you don't get with these spkrs:
no spit, no glare, no etch, no grain, no shout,
no awk, no squawk, no distortion, no equal.
"Should you value musical flow, long-term suitability, dimensional staging,
fleet-footed PRaT & an exceptional vocal band above all else, then the Zerobox
becomes one of the highest recommendations known to me."—Fairaudio 5/08.
"...open, uncolored, extremely extended & fast as greased lightning..."—HiFi+.
"...remarkable musical experience..."—TAS 9/01.
"...emotion and authenticity in abundance."—Image HiFi 4/01.
"...as if the performers were standing in front of me..."—Audiophile 4/00.
"...the Manger sound transducer - an acoustic star..."—Kopfhorer 12/99.
"...the Manger transducer is a brilliant construction..."—Hifi&Records 4/99.
"...in the rather slowly advancing technology of loudspeaker design,
the Manger transducer represents a large step forwards."—StudioPostPro 2/99.
"...entry ticket to the absolutely finest audiophile systems..."—Stereo 2/97.
"...sets standards re homogeneity & naturalness..."—Sound&Vision 1/97.
"...its most important characteristic is honesty..."—FAZ 1/96.
"...Absolute Top Class I..."—Stereoplay 1/96.
"...only the music is there - simply room-filling and natural..."—FAZ 9/95.
"...all the listeners were overwhelmed by the way the Manger transducer
conjured up a breathtakingly exact spatiality, which the conventional
comparison loudspeakers, irrespective of whether flat-core or direct
radiator, could only at most bring to a limited extent."—Stereoplay 5/93.
"...fatigue-free...high-resolution...impulse-true."—Studiomagazin 4/93.
"...closer to the ideal sound transducer than ever before."—Klang&Ton 4/93."
• above quotations pertain to full-range operation with a
single amp; bi-amp AllegroMods™ with tuneable electronic
crossover (included) allows a higher Fc, a solid-state amp
to drive the woofers directly, and a small ss or tube amp to
drive the MSW tri-head, significantly improves performance.
(or, you could pay 9x more for KEF Muons)
Manger MSW Zerobox 103 modular spkrs few speakers at any price are this musically convincing
fabled QUAD ESL-988 Full-Range
Electrostatic Doublet, aka "FRED",
"closest approach to the orig sound",
matched pair in special Vintage finish,
last and best of the British Quads
(new ones are made in China, folks),
37" high - 26" wide - 12" deep, 45 lbs.
trans-line subs/stands available.(or, you could pay 3.3x more for new
Chinese ESL-2805 Classiques)
* Quadies will notice pic is 989 - 988 be 15" shorter
and 11 pounds lighter & outperforms its larger sibling
(and most everything else!) when properly mated to
low-coloration subs & driven by a stable solid-state amp
(small cool-running Quad 606 w/ AllegroMods™ does nicely).
Quad ESL-988 Electrostatic Doublet 
fabled Raven R1.0 true-ribbons
rare SET-friendly version with
12 Ohm toroidal transformer,
95db/w/m, 4kHz~46kHz.
Soundlab A-1 Electrostatic spkrs,
beautiful dark-walnut complexion,
big, bold, tight, unforgettable.
* due to the extreme transparency of these
speakers (visually as well as acoustically)
we cannot show the other side; sorry, guys.
* note: these have been sold, butt, due to
popular demand, Miss Bootyliches stays.
Soundlab A-1 ESL's 
since 1938.
ear speakers supreme
Stax Lambda Pro Signature EarSpeaker System,
includes Lambda Pro Signature EarSpeakers
and SRM-T1 direct-drive TUBE control-amp
with DUAL-powering for Pro and non-Pro
EarSpkrs, fresh matched RCA "sidewinders".
(or, you could pay 3x more for new Stax 007A
EarSpeaker System that can't power non-Pro)
Stax Lambda Pro Signature EarSpeakers 
fabled TAD TD-4001 compression driver
with DP-4001 Be diaphragm, one only.
* new TAD DP-4001 diaphragms available.
TAD TD-4001 / DP-4001 
since 1926.
fabled TANNOY Dimention TD-10 Dual-Concentric
"Widebanders", advanced low-compression drvr
with tulip waveguide outperforms older versions,
10-in paper-pulp cone w/twin-roll fabric surround,
titanium super-tweeter adds that touch of "air"
missing in older models (no need for the ST-200
super-tweets at $2k ea), SET-friendly 91db/w/m
and 6Ω minimum below 5kHz, 43-14-15", 70 lbs.
* all things considered (sensitivity,size,weight,spl,sound),
the "sweet-spot" in Tannoy's Dual-Concentric drivers has
always been the 10-incher imo. Less is sometimes more.
• Alvin Gold, Enjoy The Music 12/2001: "The TD12 generated some
of the most realistic orchestral tonality I have experienced in a long
time, perhaps ever outside the concert hall, and the sheer physical
breadth and scale of the sound came as a revelation."
• Jason Thorpe, Soundstage 8/2002: "Although it may be related to
the high-calorie tube diet with which I fed them, I'd have to say that
the Tannoy TD10s add their own slight euphonic sweetness to the
upper midrange and treble; either that, or every other speaker that
I've heard presents that frequency range with a layer of grit to which
I've become accustomed. While I like to think that the former
explanation is the correct one, the natural, unforced nature of the
Tannoys makes the latter a distinct possibility...the sense of depth
with which they portray the original acoustic verges on magical...
the Tannoy Dimension TD10s do some things better than any other
speaker I've heard. With their superb dynamics, retrieval of detail &
world-class treble, they infuse life into music. Add in rich, slamming
bass & you're off to the races with a distinctive musical experience."
• Steven Stone, Stereophile 10/2002: "...an eerie verisimilitude
scarily close to that of a live acoustic event...a gargantuan
soundstage produced jaw-dropping dimensional effects,
deciphering even the most densely mixed soundtracks...
glorious midrange...seductively lush...beautifully defined."
TANNOY TD-10 Dual-Concentric speakers since 1926.
fabled TANNOY 609 Mk.II point-source speakers,
8" Dual-Concentric w/advanced low-compression
driver & tulip waveguide outperforms older vers,
8-sided DMT cab lowers diffraction/coloration,
SET-friendly 5Ω, 89db, 46Hz~30kHz +/-3db.
TANNOY 609 Mk.II Dual-Concentric spkrs 
Technics SB-4 3-way monitors,
advanced driver technology,
9" woofer, HF level-control,
91db/w/m, 21"h - 11"w - 9"d.
Technics SB-4 monitors 
AllegroSound
− Established 1973 −
"love what you listen with"
Los Angeles, California USA
Rick@AllegroSound.com
CONTACT AllegroSound 
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