AllegroSound * For SALE or TRADE * Crossovers *

AllegroSound

Buy < Sell > Trade
Mod < Rent > Repair

Rick@AllegroSound.com

"love what you listen with..." Crossovers

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Mission
AllegroSound has been dedicated to the
accurate recording and reproduction of
acoustic music for well over ¼ Century.
One can't please all people all the time;
for those who value knowledge
gained from hands-on experience,
AllegroSound is "hear" to assist you.

for AllegroBio

Quid pro quo
Info presented here is extraordinarily labor-intensive;
if you have not purchased from us in the 36 years we've
been in business, your contribution commensurate
with value provided is very much appreciated.

Featuring
* AllegroQC™ with 36+ yrs experience.
* Safe-packing. Trust your purchase to
one who knows & cares to pack it right.

World-Wide Shipping

Trade-ins
Trade-ins are not final until received, inspected, tested
and approved by AllegroSound. Items failing to meet
our minimum standards will be returned at customer's
expense plus a $50 charge for inspection and testing.

If you're not in the market to Buy-Sell-Trade
TODAY, bookmark this page & check back later.
* all prices U.S. currency f.o.b. Los Angeles, California USA.
* prices without deposit subject to change without notice.
* AllegroLayAway™ with 20% non-refundable deposit.
* AllegroTradeUP™ with approved trade-in.

Unobtanium Class w/o market price

FAQs

Condition
Some be 10~60 yrs old with imperfections,
including non-functioning indicator lights.
We do our best to describe known issues,
but, as one man's "good" is another's "poor",
symantics/condition cannot be guaranteed.
NO "mint", "minty", "perfect", "excellent", etc.
All pre-owned/used unless otherwise noted.
See Pics, MainsVoltage, Terms below.

Pics
Pics are shown for display purposes
& may not represent exact condition.
Text trumps pics - read description!

Mains Voltage & What To Do About It

220~240 Vac

Terms & Conditions
Equipment is carefully Inspected, Cleaned,
Variac'd, Tested for dc-offset & Auditioned
in ref system before it leaves our facility.
Quality work w/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,
typically within 30 days of cleared funds.
Suitability sole responsibility of Buyer.
All items subject to prior sale or no sale.
Not responsible for errors, typos, etc.
Symantics/condition not guaranteed.
All equipment as-is without warranty.
Add 9.75% Sales Tax within California.
All costs, including, but not limited to,
packing, freight, duty, taxes, fees, etc,
are sole responsibility of Buyer & not
refundable under any circumstances.
All sales final. References on request.

CROSSOVERS: Active
Multi-amping with electronic crossover be the way to audio virvana.

fabled Accuphase F-5 crossover,
2/3-way, 12-18 db/oct, plug-in Fc.

Accuphase F-5 crossover

Accuphase CB cards for
F5 - F15 - F15L xovers.
Buy-Sell-Trade cards.

Accuphase CB

Accuphase FB cards
for F-20 & F-25 xovers.
Buy-Sell-Trade cards.

Accuphase FB

TRI-amp with Bryston precision, flexibility, transparency...

Bryston 10B-PRO/SO/MP
XLR-Balanced Crossovers ,
Special-Order Matched-Pair
for TRI-amping, custom Fc
with 80-90-100-175-200-250-
300-400-500-2k-3.5k-4.5kHz,
6-12-18 db/oct, Late-Version.

"I found the Bryston 10B clear, transparent & neutral -
as good as I've ever heard from an outboard crossover.
It is extraordinarily versatile in managing crossover slopes
& frequencies. I recommend it for use in high-end systems
to which a subwoofer is being added." −LG, Stereophile

Bryston 10B-PRO Special-Order Matched-Pair

last & best Personality-Card xover for JBL monitors...

JBL-UREI 5235 Balanced Crossover,
2-way, 12-18 db/oct, XLR-Bal in/out,
last and best JBL xover that accepts
dedicated plug-in Personality-Cards
for classic JBL Professional monitors.
Included are standard 800Hz cards as
issued w/fabled Augspurger monitors.
* custom Personality-Cards available
for 4343, 4345, 4350, 4355, 4430, 4435.

JBL-UREI 5235 crossover

Krell Reference Crossover KRX-1,
3-way or 2-way, plug-in Fc cards,
6 calibrated attenuators, c.1985,
rack-mt, outboard power-supply.

Krell KRX-1 crossover

Est.1925

Luxman FL-202 Balanced Electronic Crossover,
80-150-290-380-500-660-800-1k-1280-1700-2kHz,
12-18 db, locking Fc, Polarity switch and Level
for HP & LP, XLR-Balanced in/out, 5-7-17",15#,
outperforms the usual suspects.

Luxman FL-202 crossover

Nikko CO-23 elect crossover,
discrete, 2-way, 12-18 db/oct,
125-160-200-250-320-400-500-
630-800-1k-1250-1.6k-2k-2.5k-
3.2k-4k-5k-6.3k-8k-10k-12.5k,
black rack-mount faceplate.

Nikko CO-23 crossover

fabled Pioneer SF-700 crossover
c.1973, 3/2-way, 6-12-18 db/oct,
125-250-500-700-1k-2k-4k-6k-8k.

Pioneer SF-700 crossover

fabled Pioneer SF-850 crossover
c.1976, 3/2-way, 6-12-18 db/oct,
125-250-500-700-1k-2k-4k-6k-8k.

Pioneer SF-850 crossover

not for sale at this time.

fabled Pioneer Series20 D-23
4-way electronic xover c.1977,
switch-select Fc and Slopes
for each pair of 8 outputs, 20#.
(or, you could pay 5x more for
three Pass Labs XVR1 2-ways)

Pioneer D-23 crossover

front-panel real-time-tuning!

fabled John Curl Symmetry ACS-1
"transient-perfect" variable xover
c.1981, Fc 45~4500Hz, rack-mt.

Symmetry ACS-1 crossover

any Fc! Stereophile A-rated. a Nelson Pass design...

fabled Nelson Pass Threshold PCX
electronic crossover, 18 db/oct,
2-way/stereo or 3-way/mono/pr,
Fc changeable in seconds via
readily-available resistor-paks
that drop into way-cool special
zero-insertion-force sockets,
shipped with Fc of your choice,
gold-plated pcb, all-discrete,
upgraded "e" power supply,
four calibrated attenuators,
17" or 19"rm, AllegroMods™.
* 2 available for TRI-amping.
DO in Stereophile writes,
"the most transparent and
least conspicuous active
crossover I have heard ".
(or, you could pay 3x more
for Nelson's new version)

Threshold PCX xover

fabled White Instruments DSP-5024 c.1997,
Programable Crossover-Equalization-Delay,
Frequency and Time Loudspeaker-Correction,
XLR-Balanced ANALOG in/out, 1U rack-mount,
front-panel controls w/Alpha-Numeric Display.

White Instruments DSP-5024 crossover