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JBL Synthesis SDEC3500 Equalizer Like New / Barely Used

Requires JBL Calibration at Additional Cost


The SDEC3500 Equalizer is a high-performance equalizer offering comprehensive EQ and audio optimization capabilities. It optimizes the performance of a JBL Synthesis system in any room using more than 500 bands parametric digital equalization that can be precisely fine-tuned in level and bandwidth to correct for the dips and peaks in the frequency range that are inherent in any room and yield flatter, more accurate frequency response. The SDEC3500 can apply this equalization to all main, center and surround speakers and subwoofers in a system.



JBL Synthesis SDEC3500 8-channel Fully-balanced Digital Equalizer demo

$9,999.00 Regular Price
$499.00Sale Price
  • SDEC-3500 Highlights

    • 8-channel input, 8-channel output, over 500-band parametrics EQ, bass management with speaker drive pre-EQ, screen and speaker cloth pre-EQ correction

    • Blu Link output provides a digital connection to JBL Synthesis SDA8300 and SDA4600 amplifiers.

    • Sound Field management using four subwoofers is available on the Blu link connection only.

    • Speaker time-delay correction for all 8 outputs

    • Patented Auto Curve Sum for subwoofer to main speaker optimization when used with JBL Synthesis ARCOS calibration system

    Speaker Specifications

    Frequency Response 20Hz – 20kHz (+0.5/–1DB)
    THD <0.01% (20HZ – 20KHZ, +10DBU output)
    Dynamic Range 108db typical (22Hz – 22kHz unweighted)
    Power Requirements 85 – 270V AC, 50/60Hz, Line Voltage set for Destination Country
    Power Consumption <35VA


    Height 3.5″ (89mm)
    Width 19″ (483mm)
    Depth 9.25″ (235mm)
    Weight 13 lb (10.9kg) Shipping Weight; 18 lb (8kg) Unit Weight
  • *All pricing is subject to applicable sales tax.

    *Some demo and/or trade-in equipment may be missing accessories, boxes, manuals, etc.  

    *HiDEF will assist obtaining these accessories if desired for an additional cost. 

    *All sales on demo and/or trade-in items are final.  If any equipment is purchased and it is discovered something is not working correctly, a store credit will be issued. 

    *Promotional Pricing is Good while supplies last. 

    Limited quantities are available. 

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