Polk Audio MM521
5.25" 2-way Mobile Monitor Series Coaxial Speakers (Marine Certified)
Quantity: 1 Pair
General Features
- 5-1/4" 2-way MM Series Marine Certified Coaxial Speakers
- Power Handling:
- Peak: 400 watts per pair / 200 watts each
- RMS: 180 watts per pair / 90 watts each
- Woven glass composite cone woofer
- Butyl rubber surround for a smoother response
- 1" Silk/Polymer composite swivel tweeter
- Klippel optimized components for distortion-free sound
- 2.7 ohms impedance
- 25mm Large diameter voice coil increase reliability
- Carbon composite basket
- Neodymium magnet structure for more power
- Top-mount depth: 2-1/2"
- 1-year SonicElectronix.com warranty
Polk Audio MM691
6x9" 3-Way Mobile Monitor MM Series Coaxial Speakers (Marine Certified)
Quantity: 1 Pair
General Features
- 6" x 9" Mobile Monitor MM Series 3-way Marine Certified Speakers
- Power Handling:
- Peak: 600 watts per pair / 300 watts each
- RMS: 250 watts per pair / 125 watts each
- Recommended power range: 15 - 125 watts RMS per channel
- Woven glass composite cone woofer
- Butyl rubber surround
- 1" Silk composite dome tweeter
- 3/4" Super tweeter
- 2.7 ohms impedance
- Klippel distortion analyzer
- 1-1/4" (30mm) Large diameter voice coil
- Neodymium magnet structure
- Top-mount depth: 3-3/16"
- Grille Included
- 1-year SonicElectronix.com warranty
Important Note: Polk Audio specifies the nominal impedance of these speakers to be 2.7 ohms. The product box states the impedance to be 4 ohms and the speaker magnet shows 2 ohms, this has been confirmed by Polk Audio to be an incorrect specification. The product manual is correct in stating the nominal impedance of the MM series of speakers to be 2.7 ohms.