{
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  "identity": {
    "title": "Fostex NF04R Compact Active Speaker with 4\" HR-Shaped Woofer Unit",
    "brand": "Fostex",
    "model": null,
    "mpn": null,
    "gtins": null,
    "handle": "gm-fostex-nf04r-compact-active-speaker-with-4-hr-shaped-woofer-unit-foste-e6a909ca",
    "url": "https://envoy-music.myshopify.com/products/gm-fostex-nf04r-compact-active-speaker-with-4-hr-shaped-woofer-unit-foste-e6a909ca",
    "catalog_product_id": "product_6e8b4c9ae6a909ca",
    "lane": "studio",
    "product_object": "studio monitors"
  },
  "offer": {
    "price": 821.99,
    "currency": "CAD",
    "available": true,
    "condition": "Brand New",
    "price_band": "mid",
    "source_verified_at": null
  },
  "specifications": {"category":"Pro Audio","subcategory":"Studio Monitors","category_path":"Pro Audio \/ Speakers \/ Studio Monitors"},
  "connectivity": null,
  "power": null,
  "included_items": null,
  "required_accessories": ["appropriate cables","monitoring solution","mount or stand if relevant"],
  "optional_accessories": null,
  "compatibility": null,
  "advisor": {
    "best_for": null,
    "who_should_skip": null,
    "fit_notes": "Best suited to players who have outgrown their first setup and need a meaningful step up.\n\nWho it is for: Shoppers who already understand the role of this pro audio and want a more deliberate purchase.\n\nWho should skip it: Skip it if you are still figuring out the basics and need the simplest possible first purchase path.",
    "watchouts": null,
    "verification_questions": ["Can you confirm exactly what is included in the sale and show it in current photos?","Are there any functional issues, repairs, or missing parts not shown in the listing?","Can you provide close-up photos of wear points, serial numbers, and any modifications?","Can you confirm the core specs that matter for compatibility in this setup?","Is this still available and has anything changed since the listing was posted?"]
  },
  "retrieval": {
    "summary": "Fostex NF04R Compact Active Speaker with 4\" HR-Shaped Woofer Unit. Fostex. NF04R Compact Active Speaker with 4\" HR-Shaped Woofer Unit. Pro Audio. Pro Audio \/ Speakers \/ Studio Monitors. available from reverb. price range 599.99 USD. condition Brand New. PRICE IS FOR ONE MONITOR ONLY First in the NF series to adopt an aluminum die-cast body. The 4-inch HR-shaped woofer unit is mounted. The first compact active speaker in the NF series. The smallest 4-inch (10cm) HR-shaped woofer unit in the NF Series. Tight, high-speed bass that transcends its size. ● UDR Tangential Edge and Push-Pull Damper are used to eliminate reverse resonance of the edge. Eliminates reverse resonance of the edges, resulting in a highly linear and responsive mid-low range. Soft dome tweeter with UFLC diaphragm for high tracking and reproducibility of micro-signals. Magnetic fluid is used in the magnetic circuit to ensure stable operation over long periods of use. The speaker units are driven by a high-performance D-class amplifier with 30 watts for the woofer and 20 watts for the tweeter in a bi-amplified system. Adjustable sound pressure level to suit the listening environment. Low-frequency characteristics can be adjusted to sound pressure levels of -2dB, -4dB, and -6dB, and tweeter sound pressure level can be adjusted to -2dB. GAIN can be switched between 0dB and +10dB according to the output level of external audio equipment. HR Diaphragm HR (HP ROTATION) is a circumferential rotation of the HP (HYPERBOLIC PARABOLOIDAL) shape, which is known in the field of building structural mechanics, to further improve it. This shape is ideal for diaphragms, as it is lightweight and highly rigid, and disperses resonance caused by split vibrations, since only shear forces act as internal stresses and no bending stresses. UFLC diaphragm UFLC is a diaphragm made of polyurethane resin with urethane film laminated to a cloth material, and is used in the tweeter of this unit. By using this diaphragm, it is possible to faithfully reproduce audio signals with natural extension to high frequencies. UDR Tangential Edge UDR (UP\/DOWN ROLL) Tangential Edge is a revolutionary edge structure that combines up-roll and down-roll in a tangential plane, and the shape is based on FEM modal analysis to optimize the functions that the edge has. It is used for woofer edges, which have important functions for speaker operation. Optional for installation in a variety of environments. Speaker section: Enclosure type: 2-way bass reflex Units: 100mm HR shape woofer, 19mm soft dome tweeter Frequency response: 57Hz to 36kHz Internal volume: 2.8L Amplifier section: Rated output: Woofer: 30W, Tweeter: 20W Input connector:XLR-3-31 type (No.2 HOT) (balanced), 6.3 mm (1\/4″) TS phone (unbalanced) Rated input level: -10dBV (TS phone) \/ +4dBu (XLR) GAIN SW 0dB, -20dBV (TS phone) \/ -6dBu (XLR) GAIN SW +10dB Input impedance: 20kΩ min. Volume: – ∞ to 0dB Lo Frequency (80Hz): 0 \/ -2 \/ -4 \/ -6dB Tweeter Level: 0 \/ -2dB Gain: 0 \/ +10dB General: External Dimensions: (W)120 × (H)189 × (D)157mm (excluding protrusions) Weight: Approx. 3.1kg Power supply (AC IN): 100 V to 50\/60 Hz Power consumption: 30W Prices and availability subject to change without notice. Ships out from our Midwest Distribution.. Fostex NF04R Compact Active Speaker with 4\" HR-Shaped Woofer Unit. Fostex. NF04R Compact Active Speaker with 4\" HR-Shaped Woofer Unit. . Brand New. Pro Audio. Pro Audio \/ Speakers \/ Studio Monitors. PRICE IS FOR ONE MONITOR ONLY First in the NF series to adopt an aluminum die-cast body. The 4-inch HR-shaped woofer unit is mounted. The first compact active speaker in the NF series. The smallest 4-inch (10cm) HR-shaped woofer unit in the NF Series. Tight, high-speed bass that transcends its size. ● UDR Tangential Edge and Push-Pull Damper are used to eliminate reverse resonance of the edge. Eliminates reverse resonance of the edges, resulting in a highly linear and responsive mid-low range. Soft dome tweeter with UFLC diaphragm for high tracking and reproducibility of micro-signals. Magnetic fluid is used in the magnetic circuit to ensure stable operation over long periods of use. The speaker units are driven by a high-performance D-class amplifier with 30 watts for the woofer and 20 watts for the tweeter in a bi-amplified system. Adjustable sound pressure level to suit the listening environment. Low-frequency characteristics can be adjusted to sound pressure levels of -2dB, -4dB, and -6dB, and tweeter sound pressure level can be adjusted to -2dB. GAIN can be switched between 0dB and +10dB according to the output level of external audio equipment. HR Diaphragm HR (HP ROTATION) is a circumferential rotation of the HP (HYPERBOLIC PARABOLOIDAL) shape, which is known in the field of building structural mechanics, to further improve it. This shape is ideal for diaphragms, as it is lightweight and highly rigid, and disperses resonance caused by split vibrations, since only shear forces act as internal stresses and no bending stresses. UFLC diaphragm UFLC is a diaphragm made of polyurethane resin with urethane film laminated to a cloth material, and is used in the tweeter of this unit. By using this diaphragm, it is possible to faithfully reproduce audio signals with natural extension to high frequencies. UDR Tangential Edge UDR (UP\/DOWN ROLL) Tangential Edge is a revolutionary edge structure that combines up-roll and down-roll in a tangential plane, and the shape is based on FEM modal analysis to optimize the functions that the edge has. It is used for woofer edges, which have important functions for speaker operation. Optional for installation in a variety of environments. Speaker section: Enclosure type: 2-way bass reflex Units: 100mm HR shape woofer, 19mm soft dome tweeter Frequency response: 57Hz to 36kHz Internal volume: 2.8L Amplifier section: Rated output: Woofer: 30W, Tweeter: 20W Input connector:XLR-3-31 type (No.2 HOT) (balanced), 6.3 mm (1\/4″) TS phone (unbalanced) Rated input level: -10dBV (TS phone) \/ +4dBu (XLR) GAIN SW 0dB, -20dBV (TS phone) \/ -6dBu (XLR) GAIN SW +10dB Input impedance: 20kΩ min. Volume: – ∞ to 0dB Lo Frequency (80Hz): 0 \/ -2 \/ -4 \/ -6dB Tweeter Level: 0 \/ -2dB Gain: 0 \/ +10dB General: External Dimensions: (W)120 × (H)189 × (D)157mm (excluding protrusions) Weight: Approx. 3.1kg Power supply (AC IN): 100 V to 50\/60 Hz Power consumption: 30W Prices and availability subject to change without notice. Ships out from our Midwest Distribution.. TriStar Music Gear. Daly City, CA, United States. tags source:reverb family:pro_audio listing_status:live brand:fostex model:nf04r_compact_active_speaker_with_4_hr_shaped_woofer_unit category:pro_audio_speakers_studio_monitors price_band:mid segment:intermediate condition:brand_new has:photos",
    "agent_summary": "Fostex NF04R Compact Active Speaker with 4\" HR-Shaped Woofer Unit is a aimed at intermediate players pro audio listing with marketplace-sourced data. Fostex NF04R Compact Active Speaker with 4\" HR-Shaped Woofer Unit currently sits around 599.99 USD. PRICE IS FOR ONE MONITOR ONLY First in the NF series to adopt an aluminum die-cast body. Marketplace data is richer on listing context, but it needs more buyer verification. Good visual coverage for spot-checking the item. Marketplace listing quality varies by seller, so condition and included items still need verification.",
    "intent_terms": ["Fostex NF04R Compact Active Speaker with 4\" HR-Shaped Woofer Unit","Fostex","NF04R Compact Active Speaker with 4\" HR-Shaped Woofer Unit","Pro Audio","Pro Audio \/ Speakers \/ Studio Monitors","brand:fostex","category:pro_audio_speakers_studio_monitors","condition:brand_new","family:pro_audio","has:photos","listing_status:live","model:nf04r_compact_active_speaker_with_4_hr_shaped_woofer_unit","price_band:mid","segment:intermediate","source:reverb","brand fostex","category pro audio speakers studio monitors","condition brand new","family pro audio","has photos","listing status live","model nf04r compact active speaker with 4 hr shaped woofer unit","price band mid","segment intermediate","source reverb","home-recording","content-creation","live-performance","tone-shaping","signal-chain","TriStar Music Gear","Best suited to players who have outgrown their first setup and need a meaningful step up.","Shoppers who already understand the role of this pro audio and want a more deliberate purchase."],
    "use_cases": ["home-recording","studio-recording"],
    "skill_level": "intermediate"
  },
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    "source_count": 1,
    "source_tier_mix": ["marketplace"],
    "evidence_flags": {"has_description":true,"has_images":true,"has_reviews":false,"has_specs":false,"source_count":1},
    "spec_provenance": null
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  "related": {
    "similar_item_ids": [],
    "comparison_reasons": ["source_count:1","family:Pro Audio","marketplace_only","identity_confidence:0.9"]
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}