Audio Proz Service and Sales


ADA Split Stack Bass Cab

Audio Proz Inv #: 54529

For sale is a 12 x 2 Slant Bass cab with installed matched QSL 8ohm drivers in parallel, damped metal grills, added fiberglass, and metal grills. This is a converted 300 watt bass cab which is very compact. The cab features high quality $70 drivers and is in excellent #9 condition. Spare or substitute parts may be available. Show picture and number on unit. We make excellent spare part selections.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

ADS L570

Audio Proz Inv #: 60555

Speaker pair. This is an audio pro modified speaker with philips woofers. Excellent sound. Same character as original ADS. High quality construction, voiced for natural sounding speaker. Cabinets and grills have minor cosmetic damage, still presentable. #8- condition

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Speakercraft S4dc 4 Speaker Selector

Audio Proz Inv #: 55010

Uses special 4 pin connector, molex type at back panel. 9/10 condition.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

AR 38BX

Audio Proz Inv #: 55500

3 way design. Installed Cizak 8 inch woofer which is tuned for deeper bass. Installed modified better match midrange. Original AR tweeter. Minor crossover updates improved cabinet dampening. Nice condition compact design. Faux Walnut cabinets. 9/10 condition

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Boston acoustics T1030 3 way tower speaker

Audio Proz Inv #: 40830

dome tweet, 2 8 inch woof, 6 inch mid. Well designed 3 way, big fullrange sound, good integration of drivers. Spare or substitute parts may be available. Show picture and number on unit. We make excellent spare part selections.

SOLD  Contact Us  

Contact us about similar items or replacement parts.


Email Us or call (617) 926-8020 for more information about repairs and modifications. We carry many OEM replacement parts.


Sonab OA-12L

Audio Proz Inv #: 28208

2 way speakers. Beautiful Teak cabinets, industrial wire cage top grill. unique design, very handsome. Original 6 inch woofs getting old but foam is still OK, sweep OK. Dual 1.5 inch paper tweets make sound but cones are warped - distorted. Unit in need of repair but functional. Tweeters can be replaced / updated as per customer request or sold as is $40. Spare or substitute parts may be available. Show picture and number on unit. We make excellent spare part selections.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Yorkville YSM5

Audio Proz Inv #: 60207

Pair of Demo/engineering sample speakers. Powered studio monitor, no original box. modified EQ circuit for better midrange/ dampened cabinet. Installed impulse/DC offset, capacitor/ equalizer for tweeter, bass tuned lower, 35% power supply upgrade. 9/10 condition

SOLD  Contact Us  

Contact us about similar items or replacement parts.

JBL 4401 Control Monitor

Audio Proz Inv #: 40744

Vintage Small Wood Box Speakers, Original Sound. Original Recone 6 inch woofs, original tweets, Audio Pro x-over update and added dacron cabinet dampening. Basic upgrade to improve tweeter reliability, improved fidelity, still maintaines JBL sound character. #9 excellent condition. Spare or substitute parts may be available. Show picture and number on unit. We make excellent spare part selections.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Yamaha NS-10m

Audio Proz Inv #: 28504

Has upgraded philips dome tweet. has origional woofers. audio pro modified x-over. Spare or substitute parts may be available. Show picture and number on unit. We make excellent spare part selections.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

JBL Arena 130 7" 2 Way Speakers

Audio Proz Inv #: 59985

Medium small box, Soft dome horn original woofs all test OK. Serious HIFI monitor. An Audio Pro modified X-over Design. **** Improved fidelity deep bass , corrected cabinet damping, custom felt behind woofer cone for tuning carlson blanket. 2nd order bass filter and coil. Black walnut design, black knit grill and silver detail, hi power handling, natural voice. #9 condition. This speaker can be modified into a truly superior HiFi monitor speaker. It has a lucky combination of parts which can be matched for excellent midrange phase response. We also add a special cut dampening blanket behind the woofers to correct for an incorrect port tuning. (No port should be directly behind woofers). Both woofer and tweeter crossovers are improved to be 2nd order filters; the woofer filter being shaped to be phase correct at midrange voice, The speaker has a very slight midbass rise but bass is tuned now below 60 Hz to 40 Hz and has far better tighter deep bass.Call for modifications, or a kit could be supplied.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

KLH model 5- 3way speakers

Audio Proz Inv #: 28223

Real walnut veneer, beautiful tan grills. BIG full range rich sound wonderful musical sound. Modern Advent 1"dome tweeters, fully updated phase correction crossover design, original 10" woofers sweep test ok. original 4" midranges treated cones to reduce cry. Audio Pro modified x-over for improved fidelity and power handling. Spare or substitute parts may be available. Show picture and number on unit. We make excellent spare part selections.

SOLD  Contact Us  

Contact us about similar items or replacement parts.


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.


Bose 901

Audio Proz Inv #: 57390

Pair. Direct/reflecting loudspeaker. SN 71659/71686. Vintage design. Walnut Veneer with beige burlap grills. Sweep tested 30hz to 10khz all test ok. Minor chip on veneer. condition #9+

SOLD  Contact Us  

Contact us about similar items or replacement parts.

JBL S38BE 3-way Bookshelf Speaker (Beech)

Audio Proz Inv #: 39379

JBL S38BE 3-Way, Beech Cabinet, Condition is like new, modified for audiophile (reference monitor) use. x-over redesign, altered design for improved fidelety and better power handling, reduced squakiness excess from mid, smoother low freq bass. Much improved sound but still has JBL character. Excellent parts quality 8" woof 4" mid 1" titanium tweeter. Spare or substitute parts may be available. Show picture and number on unit. We make excellent spare part selections.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Infinity SS 2005

Audio Proz Inv #: 61766

Three way speakers polycell dome tweeters. Professionally refoamed 4.5" Mid Range & 8" woofers. Woofers and Cabinets damped to tune to lower frequency. Black oak cabinets with many scuffs and scratches. Black knit grills, many holes in screen could be covered with new cloth. Excellent sound! Original voicing and crossover. Grill/screens have holes good condition - cabinets do show some water damage, slight split of corners - but still solid! #7 condition

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Panasonic SB-PM53

Audio Proz Inv #: 54126

(2)Small two-way speakers. (5 3/5"w x 9 3/4"h x 8"d) silver grill, cherry cabinet. 4" woofer, 2" tweeter. Good bass for small speaker, clear voice, forward sound. Bi-wired with integrated 4' cables(grey/black & blue/red). Slight smudge on one grill, #9.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Niles Audio SVC-4

Audio Proz Inv #: 54064

4 speaker, with 4 attenuator box with auto transformer. @ amp in, any speaker can switch on off. #9 Condition.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Behringer B-215

Audio Proz Inv #: 40559

600-Watt, 2-Way PA Speaker System with 15" Woofer and 1.75" Compression Driver. Priced per pair. Available at $210 each.

SOLD  Contact Us  

Contact us about similar items or replacement parts.


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.


Monitor Audio Silver 5i

Audio Proz Inv #: 54436

3-way speaker tower. *swept tested all drivers *AudioPro modified crossover(rev5) high frequency added 2nd order filter * new mid filter * improved integration for more natural voice * excellent sound, very good bass* Rosewood cabinet with black grills. Minor waterstain on top of cabinet, #9 condition. Spare or substitute parts may be available. Show picture and number on unit. We make excellent spare part selections.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Logitech Z130 (pair)

Audio Proz Inv #: 55771

Compact, small computer/personal speakers. 5 watt powered, with stereo mini input and mini headphone out.

$ NFS  Contact Us  

Cambridge Sound Works Ambiance

Audio Proz Inv #: 59426

Nice light oak cabinet. 5 inch 2 way. Excellent small box bass Treble slightly present (Minor Cabinet Scratch) #9 Condition! Nice

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Samson Expedition XP150 Portable Sound System

Audio Proz Inv #: 53887

Dual 2-way speakers with 1 3/8 inch pole holes. Onboard 5-channel mixer. 150W class D power amp. 3 mic/line channels, XLR and 1/4" input. One stereo 1/4" and 3.5mm input. Packs into single 24lb unit. Cables included. New in box with manual.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Monitor Audio RS-6

Audio Proz Inv #: 42377

(pair). 3-way design with 5 1/4" woof, 5 1/4" mid, and 1" titanium. Adjustable feet for tilt back or floor balance. Custom fitted 5 1/2" base stands, black wood design. Rosewood real wood cabs, with black knit grills. Audio Pro modified with 2nd order phase corrected crossover; basic improvement for better power handling, tweeter protection and improved midrange. Includes 8 metal spikes/feet. #9.5 condition, mint/like new. Spare or substitute parts may be available. Show picture and number on unit. We make excellent spare part selections.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Pioneer CS-G105

Audio Proz Inv #: 63098

Pair, 2-way large bookshelf (22.25x13x9"), 2" cone tweeter, 10" paper woofer w/ foam surrounds, Black vinyl veneer, Sweep tested tweeters and woofers Good, 1 cone tweeter has dented dustcap, Good condition, 1 grill upper-right corner has small tear, could be fixed, Note: Cabinets could be damped to improve quality of bass, Fairly nice-sounding, inexpensive speaker,Condition #9

SOLD  Contact Us  

Contact us about similar items or replacement parts.


Read about our Paradigm modifications here.


B&W Matrix 803 (pair)

Audio Proz Inv #: 53278

(SN: 01676, 01675) 3 way speakers. 1 Tweeter. 7 Woofer (Gold Kevlar). 7 Sub Woofer. All drivers sweep tested. Beautiful teak cabinets. Brown knit grills. Excellent fidelity speaker. Excellent Deep Bass. Nice voice, good driver Integration. Slight bright. #9 Condition. Spare or substitute parts may be available. Show picture and number on unit. We make excellent spare part selections.

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Monitor Audio Silver 5i - AP Modified

Audio Proz Inv #: 41708

Black oak wood finish. Dual 5 1/4" woofs with 1" metal dome tweeter. All drivers fully sweep tested. AP modified cross-over for 24/db per octave 2nd order filter for better phase integration between tweet and mid-range, much improved sound and imaging. Spare or substitute parts may be available. Show picture and number on unit. We make excellent spare part selections.

SOLD  Contact Us  

Contact us about similar items or replacement parts.