Audio Proz Service and Sales


Yorkville LS2100PB

Audio Proz Inv #: 90112

2400 watts - powered - 1/21" neo spkr - w/ level cntrl, HF roll-off, & Shape cntrl - 15mm birch plywood/carpet. Ultrathane black painted version

$ 2299  Contact Us  

Yorkville LS801PB

Audio Proz Inv #: 90111

Powered Subwoofers 1500 watts - powered – 1/18” – dual tuned subwoofer enclosure – 1500w internal power amplifier with level control, HF roll-off, speaker or line levels inputs – 15mm birch plywood/carpet

$ 1499  Contact Us  

Klipsch Belle Horn Loader Speaker

Audio Proz Inv #: 56881

3 way system, 15" woofer, large cabinet with walnut 36"h x 3o"w x 19"d, will rebuild with original part, nice condition horns and tweeters

$ 1450  Contact Us  

Advent Leonardos

Audio Proz Inv #: 15075

Custom built 3-way with dual 8" woofers custom 4 speaker midrange panel, phase corrected crossover circuit

$ 1000  Contact Us  

Yorkville LS808B

Audio Proz Inv #: 90109

Passive Subwoofer 1400 watt subwoofer - 8 ohms - 1/18" - dual tuned – wheels/handles – 15mm birch plywood/carpet. Ultrathane black painted.

$ 899  Contact Us  


We leave "SOLD" items on our website for machines that we often repair and provide parts for. This is to give you an idea of the products we typically carry, and direct you to alternatives you may not know about - we often have substitutes for out-of-stock parts, and are happy to recommend workarounds and different solutions to common problems.


Yorkville LS701P

Audio Proz Inv #: 90110

Powered Subwoofers 700 watts - powered – 2/10” - low profile mini subwoofer w/internal x-over/processor,level control – carpet

$ 869  Contact Us  

Paradigm CC-370 v3 Audio Pro Modified Rev. 5

Audio Proz Inv #: 55013

(Matched Pair),  Center Channel Dual 6.5 inch woofers (shielded), 1 titanium 1 inch tweeter (shielded). Sweep tested all OK. Black Cabinet and grill. 22" wide, 7.5" tall, 9.5" deep. Top quality / best version 3, Paradigm woofers and tweeters , A.P. Modified for Hi Fi listening mid field, tweeter pad, phase correcting crossover,  re-voice one woofer for low freq deep bass response, add carlson damping blanket, Improved fidelity more natural voice, excellent sounding speaker. 9/10 condition.

$ 780  Contact Us  

Cambridge Soundworks M80

Audio Proz Inv #: 57648

3 way speakers. Real Maple wood finish cabinets ! Grey knit grills. 8" woofers butly surrounds, large shielded magnets, 3" midrange , 3/4' black poly dome tweeter, all drivers sweep tested OK. Audio Pro modified X-over design Rev 5, Mid/Far field. more natural voice, better driver integration, added short felt Carlson blanket, better deep bass. condition #9+ (Priced for the pair)

$ 680  Contact Us  

Monsoon FPF-600

Audio Proz Inv #: 64060

Pair of 3 way design minimal baffle,  (1) ribbon planar tweeter, (1) custom modified 2" dome midrange for better clarity & dispersion, and 6.5" woofer. Excellent thick deep bass with thin planar design spacious sound & small footprint speaker. Black metal grill and cast metal base 42" tall. #8+ condition

$ 660  Contact Us  

(PAIR) Paradigm Mini Monitor V3 Black

Audio Proz Inv #: 72029

All original drivers; sweep tested OK. Woofers cleaned and treated. Audio Pro modified crossover rev.6A - nearfield / midfield. Audiophile upgraded parts; 2nd order high frequency filter and low frequency circuit, special phase corrector, felt cone dampeners on woofers, & felt Carlson damping blanket. Vince owns a pair of these himself, and considers them one of the best small box speakers of all time (of a 6 inch woofer design modified to go down to 35 -40 cycles) Condition #9 some slight dust and dirt on top edge of grills

$ 660  Contact Us  

Paradigm Mini Monitor V3

Audio Proz Inv #: 72035

(Pair) Black, all original drivers sweep tested OK, Audio Pro modified Rev 6 AMF x-over design (audiophile quality parts), 2nd order hi freq filter design, 2nd woofer coil & bass filter, phase corrector circuit, carlson damping blanket, secured with RTV, also added felt cone dampeners to woofers, SN 118997 118996, A.P. Mod Rev 6A, condition #9

$ 660  Contact Us  


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We keep our database up to date with almost 10,000 items in stock. If you see a part number and a price, we have that item in stock. 

Customers outside of the US, please note that international shipping can be costly (US Post $16 minimum - up to 8oz or 226g). We are glad to combine orders to reduce shipping costs. Take a look at our shipping policies for more information and estimates of prices and shipping time.


Sansui SP-1700 Pair

Audio Proz Inv #: 71989

Vintage 3 way speakers, *real wood veneer & fancy lattis grill, (1) cabinet has damaged front edges & corners, original 12" textile woofer and 4" midranges - all tested OK (A.P. treated cone) 2 new peerless 2" tweeters per cabinet (upgrade part) ****Audio Pro modified x-over rev 4/5 much improved fidelity**** more detail hi frequency, natural voice midrange, better driver intergration, improved bass, *Wow!!! Excellent Full Range Sound!* condition #8+

$ 600  Contact Us  

Yorkville NX300P

Audio Proz Inv #: 90101

300 watts - powered - 1/15” woofer & 80°x50° horn w/1” driver - 250/50 watts bi-amp built in mixer with microphone and line inputs and more.

$ 599  Contact Us  

Yorkville LS608

Audio Proz Inv #: 90108

Passive Subwoofers 1400 watt subwoofer - 8 ohms - 1/18" - horn loaded – 15mm birch plywood/carpet

$ 599  Contact Us  

Monsoon FPF-600

Audio Proz Inv #: 64125

Pair of 3 way minimal baffle design speakers. Hi & Mid frequency planar magnetics dipole transducers. 6.5" hi quality woofer.  Audio pro modified x-over design, for more natural voice and better driver integration.  Really Nice ! full range, airy open sound. 42" tall with cast metal integrated base. All black with black meytal grills.  #9 condition. 

$ 580  Contact Us  

Yorkville E10

Audio Proz Inv #: 90107

Full Range Loudspeakers 350 watts - 8 ohms - 1/10" & 1” HF driver on 100°x25° horn – FOH/Monitor combo - w/flying hardware (two top plus pull-back) - 2x ¼” & 2x Speakon 4 inputs, birch/carpet enclosure

$ 499  Contact Us  

Behringer Truth B2031P (pair)

Audio Proz Inv #: 56025

For sale Audio Pro Rev. 4/5 Modified passive version. New. 2 way passive monitor speaker (pair). Audio Pro modified. Rev 4 Design. Custom cabinet damping. Model 2031A are amplified speakers. I suggested 2031 passive design, and to use any good 40-100 Watt amplifier. Check out the Behringer website for a picture. A modified set is $448. We modify the 2031 to be a near field monitor where midrange tone is "warmer" or slightly receded image by a 3db through about at octave between 800 - 2000 H3. A far field monitor version is slightly brighter or stronger midrange and designed to listen at 4 to 8 feet distance. Basically flat response is perceived at that range. Near field version is for 2 to 5 feet away listening, and indeed most BSEE acousticians agree that a near field should be dipped in midrange. In both cases, the modification consists of improved multi section crossover (it presently has a very simple 4-part crossover) as well. We install a dampening blanket between the internal chambers, dampen tune one of the port slots and finally apply soft felt clone dampeners to improve midrange level and tonal match to crossover. The cabinet is now tuned to reproduce 40 Hz powerful and clean. The speakers are very heavy design with cast frame woofer, using high density MDF cabinet, very well done. No grill cloth is included by design. Shipping can be $38 or so to get them to you.

$ 488  Contact Us  


We have a wide variety of speaker parts available, and we do modifications for improved fidelity, better power handling, phase correction, and many others. Email Us or call (617) 926-8020 for details.


Infinity RS-4001

Audio Proz Inv #: 58873

Pair of 3-way speakers MODIFIED. Audio Pro custom design. (2) New upgrade 3/4 dome (silver flute) tweeters. (2) Marantz 2" dome (vintage) midranges. (2) Matched professionally refoamed original Infinity 4001 woofers. Extensive rework mid circuit . Improved low-frequency filters. Custom cabinet damping and felt cone. Dampeners for improved deep bass.

$ 488  Contact Us  

EV Interface 2 Series II

Audio Proz Inv #: 61230

One of the best passive radiator designs, mods for improved power and midrange, pro use, e way passive radiator design, big bass sound, dark walnut look cabinet, medium brown grills, very minor fabric pulls at corner, minor stain can be painted with box, nice condition, rebuilt original parts, minor cabinet chip in back, original boxes available to ship, Audio Pro modified Rev. 4 x-over, monitors for midfield, #8+

$ 488  Contact Us  

Bang and Olufsen Beo Lab 4000

Audio Proz Inv #: 70702

Rear inputs: AC power. 1 RCA assignable as L or R channel. 2 - Din power link inputs. Swept tested good. Black "snap on" grills in good condition. Cloth covered mesh metal frame. #9 condition. 

$ 488  Contact Us  

Klipsch RF-52II Tower Speakers

Audio Proz Inv #: 72851

36" tall, dual 5 1/4" metallic cone woofers, 1" titanium dome tweeter horn design, all original drivers sweep tested 35-10khz all OK. These are the better sounding Klipsch design product, full range sound more musical horn performance. Original x-over -not modified. Black Oak look cabinets black knit grill (one grill missing), very minor cabinet damage on back top corner, #8+ condition

$ 488  Contact Us  

Dayton BR-1 (Pair)

Audio Proz Inv #: 71895

2-way speaker. 6.5" treated cone. Butyl surround woofers. 1-1/8" silk dome tweeters. Audio pro modified x-over design & custom cabinet damping. Phase corrected design. Added felt carlson blanket and dacron bonded fill. Ferrite slugs on woofer coil. 1 uF peaking cap. Black oak cabinets. Black knit grills. True audiophile monitor, can take 100W. Condition 10

$ 468  Contact Us  

Yorkville YX215C

Audio Proz Inv #: 90104

600 watts - 4 ohms - Bi-ampable - 2/15" & 1” HF driver on 90°x40° horn – Trapezoidal cabinet 2x ¼” & 2x Speakon4 inputs, plywood/carpet enclosure

$ 459  Contact Us  


We have been selling and repairing professional and consumer audio equipment for over 40 years. (Read some of our customers testimonials here)

We keep our database up to date with almost 10,000 items in stock. If you see a part number and a price, we have that item in stock. 

Customers outside of the US, please note that international shipping can be costly (US Post $16 minimum - up to 8oz or 226g). We are glad to combine orders to reduce shipping costs. Take a look at our shipping policies for more information and estimates of prices and shipping time.


Yorkville YX18SB

Audio Proz Inv #: 90106

Subwoofer 400 watts - 6 ohms - 1/18" – 2x ¼” & 2x Speakon inputs BLACK PAINT version

$ 449  Contact Us  

JBL MR825

Audio Proz Inv #: 53869

Pair, 15" two-way professional speakers & horn, High quality JBL parts, Trapezoid cabinet, black Tolex, Metal front grill, All drivers sweep tested OK, All 1/4" input connectors, 1-3/8" pole cup on bottom, Low use time, mostly once or twice per year for short-term rental use, Condition #8

$ 448  Contact Us