- Premium Sound Quality: SYN Series speakers deliver high-end audio clarity, crisp highs, and deep lows at a fraction of the cost of WFO-level gear.
- Durable Construction: Custom StepUP glass fiber cone and butyl rubber surround provide long-lasting performance and reduced distortion.
- Optimized Design: Protective rubber magnet boot and precision-engineered 1" voice coil ensure reliability under heavy use.
- Easy Installation: Comes with instruction manual and all necessary installation accessories for quick setup.
- High Power Handling: 160W RMS / 400W MAX per pair, 4-Ohm impedance, and 93.2dB sensitivity for superior performance in any car audio system.
Synergy Audio 6"x9" 160 Watts RMS 4-Ohm Coaxial Loudspeaker Pair SYN-SIXNINE
This Listing Includes:
- (2) Synergy Audio SYN Series SYN-SIXNINE 6" x 9" Coaxial Speakers
- Installation and tuning instruction manual
- Installation accessories
Bring stronger midbass, clear vocals, and crisp high-frequency detail to your vehicle with the Synergy Audio SYN-SIXNINE 6" x 9" coaxial speaker pair. Built for dependable daily performance, these speakers offer an efficient, full-range upgrade for factory speaker locations and aftermarket car-audio systems.
The SYN-SIXNINE uses a custom StepUP glass-fiber laminate cone for accurate sound reproduction, a custom-tooled butyl rubber surround for durability, and a protective rubber magnet boot. With 93.2 dB sensitivity and 4-ohm impedance, they work well with factory radios, aftermarket head units, or properly filtered amplification.
The SYN Series carries over Synergy’s performance-focused approach in a more accessible speaker line for clean, capable everyday systems.
Features:
- 6" x 9" coaxial speaker pair
- 160W RMS / 400W max power handling per pair
- 4-ohm impedance
- Custom StepUP glass-fiber laminate cones
- Custom-tooled butyl rubber surrounds
- Protective rubber magnet boots
- 93.2 dB sensitivity
- 50 Hz–30 kHz frequency response
- Includes instruction manual and installation accessories
Specifications:
- Speaker Size: 6" x 9" Coaxial
- Impedance: 4 Ohms
- Power Handling: 160W RMS per pair
- Max Power Handling: 400W per pair
- Voice Coil: 1"
- Cone Material: Custom StepUP glass-fiber laminate
- Surround Material: Custom-tooled butyl rubber
- Magnet Protection: Rubber magnet boot
- Frequency Response: 50 Hz–30 kHz
- Sensitivity: 93.2 dB
- Recommended High-Pass Filter: 80 Hz at 12 dB per octave
Dimensions:
- Cutout Diameter: 5.87" x 8.66"
- Mounting Depth: 3.23"
- Overall Dimensions: 6.46" x 9.25"
- Total Depth: 3.70"
Upgrade your vehicle with the SYN Series Coaxial Speakers and enjoy crisp highs, deep lows, and pure, powerful audio performance designed for enthusiasts who demand more—without paying top-tier prices.
Accepted Payment Methods at Big Jeff Audio
At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:
Credit and Debit Cards
- Visa
- Mastercard
- American Express
- Discover
- Diners Club
Digital Wallets
- Amazon Pay
- Apple Pay
- Meta Pay (formerly Facebook Pay)
- Google Pay
- Shop Pay
- PayPal
International Payment Methods
Bank Transfers
Financing Options
We also offer financing options to make purchasing easier. Learn more about our financing options here.
- Klarna
- Affirm
- Sezzle
- Snap
- Acima
- Tiptop
If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.
Shipping Options and Delivery Time
Do You Offer Expedited Shipping?
Yes! At checkout, you can select from different shipping options:
- Standard Shipping: Free for orders over $100.
- Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.
How Long Does Delivery Take?
- Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
- Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.
What Happens If My Package Is Undeliverable?
If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.
Why Can’t I Track My Order?
If you're having trouble tracking your order:
- Make sure you’ve received the shipping confirmation email with the tracking number.
- Log into your account on our website and use the “Check Your Order Status” button.
- If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.
