THE UNIT DOES NOT POWER ON. THE UNIT IS UNTESTED. IT IS BEING SOLD AS-IS FOR PARTS OR REPAIR. It may function properly but I have not fully tested it so I am selling it FOR PARTS OR REPAIR IN “AS-IS” CONDITION WITH ABSOLUTELY NO RETURNS ACCEPTED

In time for the holidays as a gift to that audiophile in your life, or for adding that bottom end in some great entertainment. An outstanding clarity subwoofer. Gently and respectfully used - good condition. Minor cosmetic marks that polish out nicely. Photos taken without polish or wax applied.Adjustable feet on bottomExtra grille included in case needed - it has a minor 1/4 rip in middle. =========Elevate your home audio experience with the MartinLogan Grotto subwoofer system. It boasts a powerful 250W RMS power output and a wired connectivity option for seamless integration into your existing setup. The triangular shape and sleek black color make it a stylish addition to any room. With stereo L/R RCA and speaker audio inputs, this subwoofer is compatible with a wide range of devices. The Grotto is designed to deliver high-resolution audio with servo control technology for accurate and clean bass. Whether youre watching movies or listening to music, the MartinLogan Grotto subwoofer system is sure to enhance your home entertainment experience. Specifications from the MartinLogan website:Frequency Response22–150 Hz ±3dB; Anechoic through LFE effects inputImpedanceRCA Line Level In: 20,000 Ohms. Compatible with 4, 6, or 8 Ohm rated amplifiers.Low Frequency Transducer10 (25.4cm) high excursion, aluminum element woofer with extended throw drive assembly, non-resonance asymmetrical chamber formatAmplifier250 watts rms (350 watts peak)Audio Controls25Hz Level Control: ±12dB Power: Auto/On/StandbyHigh Pass Filter Frequency70 HzLow Pass Filter Frequency30, 35, 45, 55, 65, 80 HzInputsRCA line level; RCA LFE; speaker levelWeight40 lbs. (18.2 kg)Dimensions15.4 × 15 × 12.9 (39.1cm × 38.1cm × 32.8cm)

This may or may not work. Selling for parts untested. Fuse does not look to be blown.

MARTIN LOGAN DYNAMO SUBWOOFER - IN VERY GOOD SHAPE - WORKS. THANKS FOR LOOKING!!

Selling our home theater pair of Dynamo1000 powered wireless or wired connection subs. Cool thing is that the feet can be moved to make them front or down firing depending on your chose plus they come with carpet spikes or remove them . Nothing wrong with them at all. Just got 2 new SVS PB4000’s and my Anthem AVM70 can’t do 4 subs lie it’s big brother AVM90 can. Would like do local pickup here in Virginia due to weight and will drive up to 60 miles to meet or if you need shipping , I can check freight shipping as I believe postal services these days are a total rip off as I assume it would be about $120 to ship them and that could be too low a guess Specifications Specifications are subject to change without notice Frequency Response 22–200 Hz ±3dB; Anechoic through LFE effects input Impedance Line level RCA: 20,000 Ohms Compatible with 4, 6, or 8 Ohm rated amplifiers. Low Frequency Transducer 12 (30.5cm) high excursion, poly cone with extended throw drive assembly; sealed non-resonant cabinet design Amplifier 500 watts (1000 watts peak) Audio Controls Low Pass Filter Switch: Bypass (LFE In), Variable (Left and Right In) Low Pass Filter Frequency 35–120 Hz Resolution 16-bit Sampling Rate 48kHz Wireless Band 2.4GHz uncompressed digital self-sensing design constantly adjusts for best connection. Error Checking Bidirectional feedback constantly monitors integrity of data stream. Antenna Internal Subs Per Transmitter One Maximum Wireless Range 30–40 feet (10–12.5 meters) Wireless Receiver Built-in receiver (SWT-1 transmitter sold seperately) Inputs Left and Right/LFE RCA line level Power Draw Standby: 1W Idle: 15W Max: 650W Weight 34 lbs. (15.4 kg) Dimensions (down-firing orientation) 14.54 x 13.69 x 14.59 (36.9cm x 34.8cm x 37.1cm)

Martin Logan Dynamo 700W Black Wireless 10 High-Resolution Subwoofer Speaker. Condition is Used. Shipped with USPS Ground Advantage. Pre-owned but works fine. Included photo showing that it turns on properly. Comes with power cord. Please message with any questions. Shown item number is wrong but eBay won’t let me change it. Serial # is DYDWJ0110

All functions have been tested and are in working order. Purchase includes the replacement woofer as shown only. No screws or other accessories are included unless shown in the photos.

Martin Logan Dynamo 700W Subwoofer Home Audio Not Working, it did not power on

MARTIN LOGAN DYNAMO SUBWOOFER (FOR PARTS)SPECIFICATIONS CONDITION: PARTS SERIAL NUMBER: DYSF0265 FUNCTIONALITYTECH NAME: BOBOPERATIONAL CHECK: PARTIAL OP CHECK POWERS ON: NO POWER AMPS OR WATTS: 120 60Hz 700WLIGHTS AND DISPLAY: NOT APPLICABLEOUTPUT CHECK: NO AUDIO VIDEO CHECK: NOT APPLICABLEPOWER CABLE INCLUDED: NOINSPECTION AND CONDITION NOTES: - NORMAL WEAR AND TEAR - UNIT APPEARS TO BE IN GOOD OVERALL PHYSICAL CONDITION, BUT HAS ONLY BEEN PARTIALLY TESTED- UNIT IS FOR PARTS/REPAIR. BLOWS A FUSE WHEN ATTEMPTING TO POWER ON. - UNIT SHOWS SIGNS OF WEAR, INCLUDING: SCRATCHES, SCUFFS, DENTS, CLEANLINESS, ETC (PLEASE SEE PHOTOS)- UNIT SOLD AS IS. AUTHENTICITY WE GUARANTEE THAT ALL ADVERTISED PRODUCTS ARE 100% GENUINE. IMAGES PRODUCT IMAGES ARE FOR ILLUSTRATIVE PURPOSES ONLY AND MAY DIFFER FROM THE ACTUAL PRODUCT. WHEN MULTIPLE QUANTITIES ARE AVAILABLE, IMAGES ARE OF ONE ITEM ONLY. 3-DAY SHIPPING GUARANTEED PROCESSING TIMES VARY FROM 2-3 BUSINESS DAYS. PURCHASES SHIP NO LATER THAN THREE BUSINESS DAYS AFTER PLACED. PLEASE KEEP IN MIND THAT WEEKENDS AND HOLIDAYS MAY DISRUPT SHIPMENT TIMES. RETURNS & ORDER CANCELLATION PLEASE REVIEW ALL IMAGES CAREFULLY AND ASK ANY QUESTIONS PRIOR TO SUBMITTING AN OFFER. THERE ARE NO GUARANTEES OUTSIDE OF WHAT WE HAVE STATED WITHIN OUR DESCRIPTION. PLEASE MESSAGE US PRIOR TO SUBMITTING A RETURN REQUEST; MOST ISSUES CAN BE RESOLVED VIA MESSAGING.

For sale is my old Martin Logan Dynamo 10 subwoofer. 200W RMS, 10 driver, with wired connectivity. Comes complete with original instructions, cover, mounting feet and original power cord. Clean and in perfect working condition. See pictures for details and let me know if you have any questions. Fast & Free shipping to US addresses via FedEx Ground.

I can’t find any flaws. Very nicely kept. Lives up to the Martin Logan name. Powerful and small. Fully working condition. Includes the grill and will come reboxed.

Martin Logan Dynamo High Resolution Subwoofer System

Martin Logan 700 subwoofer plate amplifier for parts or repair. Amplifier turns on, but turns off when sense the signal.

Not tested but appears to be in very good used condition

Martin Logan SWT-2 Subwoofer Wireless Transmitter. Brand New Untouched. https://www.crutchfield.com/S-7FDjR8vFsJD/p_839SWT2/MartinLogan-SWT-2.html

Condition Unit has been Tested and Working Unit shows some signs of use, wear and scuffs. Additional Detail No Power Cord Included No Power Adapter Included No other accessory included (We ONLY include what is in the pictures). Please contact us via the eBay message system if you have any questions. _____________________________________________________________________________________________________ Thank you for shopping with SF Goodwill! Your generous purchase from Goodwill makes a big difference for local people struggling with unemployment. Your purchase funds job programs and services for people overcoming challenges like homelessness, former incarceration, lack of job skills and limited education. We create second chances through training and the dignity of work. Payment: ??????Payments are due within 7 days from auction end date. Shipping: ??????We do not ship to PO Boxes or Military Addresses (ie: APO/FPO/DPO/etc) Combined Shipping: Yes, We Offer Combined Shipping Discounts! Item with the highest shipping price will be billed at full price shipping, additional items: 75% off each shipping cost Most orders qualify for an automatic combined shipping discount, simply check out and pay! Some items cannot be combined in shipping (fragile, oversize or heavy items) We cannot apply a combined shipping discount after payment has been made Please send us a direct message if you need help, or require a custom combined shipping invoice. Local Pickup: Were offering local pickup effective 11/1/2023. Once the auction has ended, choose the local pickup option during checkout. If you have any issues choosing local pickup, please let us know. Once checkout via local pickup has been completed, please allow 24-48 hours to contact you and schedule your order pickup. Local Pickup is by appointment only. We will not accept on the spot pickups. Orders must be picked up within 7-days of the scheduled appointment. Pickup extensions will not be offered. Contact us for the local pickup instructions. Order Issues and Questions: Problems with your order? Were here to help! Please contact us via the eBay message system if you have any issues with your order. Due to our high volume of sales, please allow 24-48 hours for us to respond to your messages. ______________________________________________________________________________________________________ Our Mission: Each year, nonprofit Goodwill of San Francisco, San Mateo and Marin breaks the cycle of poverty for thousands of local people through our transformative free training and work placement programs. Goodwill serves anyone who comes through our doors with a willingness to work. Job Creation: From skills training to job coaching that leads to employment, we identify and develop job-readiness skills on both a personal and professional level, plus offer a variety of employment support services. Employment at Goodwill: Our 21 retail stores, 25 attended donation centers and 2 warehouses employ more than 600 people and provide training and employment opportunities for individuals seeking to learn and build work skills that lead to career pathways. Employment with Top Bay Area Companies: Our experienced employment coaches connect work-ready job seekers with open positions at a range of companies throughout San Francisco, San Mateo and Marin counties. Impacts: Last year, Goodwill of San Francisco, San Mateo and Marin placed our participants in 636 jobs and transitional employment opportunities. In addition, education, job training, and employment services were provided to 3,200 people in our three-county region, and 10,300 visits were made to our Comprehensive Access Point Job Center.

Martin Logan Dynamo 300 High Resolution Subwoofer Pre-Owned but works fine. I have attached photos of it plugged it and turned on with green status light on. Comes with power cord. Please message with any questions.

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This subwoofer is in excellent condition. It sounds amazing for music and movies, very punchy. Feel free to ask any questions. Good Luck and happy bidding!

Great shape! Low use for its age. Now discontinued by Martin Logan. Don’t see a single noticeable scuff or scratch anywhere on it. Adult owned, non smoking home, always well cared for. Don’t have the original box but I will over-package it as well as possible and insure it for shipping.

Like new with no visible signs of use. Powers on and status light shows connection but no sound. Comes in the original box with power cord

Selling our home theater pair of Dynamo1000 powered wireless or wired connection subs. Cool thing is that the feet can be moved to make them front or down firing depending on your chose plus they come with carpet spikes or remove them . Nothing wrong with them at all. Just got 2 new SVS PB4000’s and my Anthem AVM70 can’t do 4 subs lie it’s big brother AVM90 can. Would like do local pickup here in Virginia due to weight and will drive up to 60 miles to meet or if you need shipping , I can check freight shipping as I believe postal services these days are a total rip off as I assume it would be about $120 to ship them and that could be too low a guess Specifications Specifications are subject to change without notice Frequency Response 22–200 Hz ±3dB; Anechoic through LFE effects input Impedance Line level RCA: 20,000 Ohms Compatible with 4, 6, or 8 Ohm rated amplifiers. Low Frequency Transducer 12 (30.5cm) high excursion, poly cone with extended throw drive assembly; sealed non-resonant cabinet design Amplifier 500 watts (1000 watts peak) Audio Controls Low Pass Filter Switch: Bypass (LFE In), Variable (Left and Right In) Low Pass Filter Frequency 35–120 Hz Resolution 16-bit Sampling Rate 48kHz Wireless Band 2.4GHz uncompressed digital self-sensing design constantly adjusts for best connection. Error Checking Bidirectional feedback constantly monitors integrity of data stream. Antenna Internal Subs Per Transmitter One Maximum Wireless Range 30–40 feet (10–12.5 meters) Wireless Receiver Built-in receiver (SWT-1 transmitter sold seperately) Inputs Left and Right/LFE RCA line level Power Draw Standby: 1W Idle: 15W Max: 650W Weight 34 lbs. (15.4 kg) Dimensions (down-firing orientation) 14.54 x 13.69 x 14.59 (36.9cm x 34.8cm x 37.1cm)

Martin Logan 700 subwoofer plate amplifier for parts or repair. Amplifier turns on, but turns off when sense the signal.

THE UNIT DOES NOT POWER ON. THE UNIT IS UNTESTED. IT IS BEING SOLD AS-IS FOR PARTS OR REPAIR. It may function properly but I have not fully tested it so I am selling it FOR PARTS OR REPAIR IN “AS-IS” CONDITION WITH ABSOLUTELY NO RETURNS ACCEPTED