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Open Box Fostex 8" 3-way Studio Monitor (Pair)

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The PM8.4.1 features an 8" woofer, 4" midrange and 3/4" tweeter powered by a 60W, 18W and 18W independent amplifier, respectively, for wider frequency range reproduction - a first for a Fostex PM-seri... Read More

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The PM8.4.1 features an 8" woofer, 4" midrange and 3/4" tweeter powered by a 60W, 18W and 18W independent amplifier, respectively, for wider frequency range reproduction - a first for a Fostex PM-series monitor. The built-in channel divider provides ideally overlapped frequency crossovers for smoothest connections between the drivers. The midrange and tweeter are positioned symmetrically on the Left and Right to minimize the physical height of the enclosure boxes as well as to minimize the affect of diffraction. The woofer and the midrange are housed in an individual chamber respectively inside the enclosure box to have little interference between the drivers.

Three-step level adjustments are provided for HIGH at +1/0/-1 dB and LOW at +3/0/-3dB. The diaphragm for the woofer and the midrange is highly rigid with moderate internal loss being made of highly elastic Kevlar papered by Fostex's original engineering to reproduce any type of input source. The tweeter diaphragm is UFLC (Urethane Film Laminated Cloth) soft dome type to reproduce any types of high frequencies keeping its own transparency.

  • 60W, 18W and 18W independent power amplifiers
  • Soft dome tweeter
  • 4" mid-range driver
  • 8" low frequency woofer
  • 3-step level adjustments are provided for HIGH at +1/0/-1 dB and LOW at +3/0/-3 dB
  • 2 x inputs: TRS balanced and XLR balanced
  • Speaker Section
  • LF driver: 8" (20cm) cone speaker
  • Midrange dirver: 4" (10cm) cone speaker
  • HF driver: 3/4" (19mm) soft dome
  • Frequency Response: 50 Hz – 25kHz (+-3dB)
  • Amplifier Section
  • Input A
  • Connector: 6mm dia. TRS phone (balanced)
  • Input Level: -10dBV
  • Impedance: 20K ohm or more
  • Input B
  • Connector: XLR-3-31 (balanced)
  • Input Level: +4dBu
  • Impedance: 20K ohm or more
  • Output Power: LF 60W, MID 18W, HF 18W
  • Controls
  • Low +-3dB at around 60Hz
  • High +-1dB at around 10kHz
  • General
  • Power Consumption: 60W
  • Power Requirement: US 120VAC, 60Hz
  • EUR/UK/AUS 230VAC, 50/60Hz
  • CHN 220VAC, 50Hz
  • Dimensions:10.6" (W) x 17" (H) x 11.4" (D)
  • Net Weight: 13.4kgs
  • Supplied accessories: IEC power cable

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  • Customer Reviews


by PowerReviews

(based on 1 review)

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Reviewed by 1 customer

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(5 of 5 customers found this review helpful)


Clean, Clear, Quiet

By Jim Harrison

from Redmond, WA

I bought these as replacements for my venerable JBL 4312A set (so sad to see them go, too), since my studio has shrunk and the 4312's were never really built for near-field use, anyway. I set the PM841's on my worktable using the equilateral triangle (distance apart = distance from listener, top of the woof roughly level with my nose, angled ~30 deg in) layout on a set of Auralex speaker pads and hooked them up. These speakers are designed to use balanced inputs, but they will accept unbalanced connections just fine (my mixer doesn't provide bal out). Short story - I can finally hear all the little nuances that the instruments give to the music as well all the little noises that I was missing before; all without having to crank the volume (as I had to with the JBL's) to hear it without upsetting the cats and wife. Just for S&G, I tried them without the Auralex pads and while the difference isn't life-altering, it is very audible. The pads prevent the table top from acting like an extension of the cabinets, which effectively "bridges" the bass from each into a single sound source. In other words, well worth the cost. The felt pads on the bottom of the speakers are not sonic-oriented - they're only there as scratch prevention.

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