Kenwood home stereo amplifier

Kenwood home stereo amplifier DEFAULT



(1) Magnetic Circuit with Aluminum Ring
An aluminum ring minimizes unwanted distortion caused by electromagnetic induction of the voice coil, and it ensures a clear sound.

(2) High Rigid Glass Fiber Diaphragm
A glass-fiber is the material with high strength and high toughness. The woven glass-fiber diaphragm cleanly provides all the detail and impact you expect.

(3) Phase Correcting Diffuser
Its specially designed slits correct unwanted  phase shift and deliver a more life-like sound experience while the concave shape on a center part of diffuser clearly reproduces a vocal sound image.

(4) 2way Tweeter
The tweeter consists of two tweeters. This unique structure delivers the fullness in a wide range while each tweeter reproduces a different frequency band.

(5) Special Phase Plug with Center Dip Design
-optimizes sound radiation resulting in natural and charming vocal.


(1) Aluminium Short Ring

(2) Super Tweeter Voice Coil

(3) Main Magnet

(4) Sub Magnet

(5) Tweeter Voice Coil

Speaker Tech-SpecKFC-XS1704
Peak Input Power180W
RMS Input Power45W
Tweeter DesignSoft + Titanium Dome
Tweeter Magnet CompositionFerrite
Woofer Magnet CompositionNeodymium
Nominal Impedance4ohms
Frequency Response34Hz-56kHz (-10dB)
Sensitivity (dB/W at 1m)83dB
Mounting Depth57mm

Problem with sound on Kenwood home stereo system

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Kenwood Corporation

Japanese electronics company

Not to be confused with the UK-based manufacturer of kitchen appliances, Kenwood Limited.

Kenwood Corporation (株式会社ケンウッド, Kabushiki-Gaisha Ken'uddo) (originally known as Kasuga Radio Co. Ltd. and later Trio Corporation) was a Japanese company that designed, developed and marketed a range of car audio, hi-fi home and personal audio, professional two-way radio communications equipment, and amateur radio ("ham") equipment. Since October 2011, Kenwood survives as the brand of JVCKenwood Corporation.


The company was established in 1946 as the Kasuga Radio Co. Ltd. in Komagane City, Nagano Prefecture, Japan. In 1960, the company was renamed Trio Corporation. In 1963, the first overseas office was founded in Los Angeles County, California, USA.[2]

In the early 1960s, Trio's products were rebranded by the Lafayette Radio Company, with a focus on citizens' band radio.

A&A Trading Co. was an importer of Japanese-made electronics for RadioShack, and a bilingual Japanese-speaking manager from A&A, William "Bill" Kasuga, partnered with George Aratani and Yoichi Nakase to establish a company that would be the exclusive importer of Trio products.[3]

The name Kenwood was invented by Kasuga as being the combination of "Ken", a name common to Japan and North America that had been tested and proven acceptable to American consumers in the name of Kenmore appliances, and "Wood", referring to the durable substance as well as suggesting a relation to Hollywood, California.[3] The brand recognition of Kenwood eventually surpassed that of Trio, and in 1986 Trio bought Kenwood and renamed itself Kenwood. George Aratani was the first chairman of Kenwood USA Corporation and succeeded by Kasuga.[2] In October 2008, Kenwood merged with JVC to form new holding company, named as JVCKenwood.

XX880SR audio cassette tape recorder

Kenwood introduced its Sovereign line of components in 2001. In 2007, Kenwood discontinued its line of consumer audio receivers, home theater systems and other home electronics.

Today, products marketed by the company to consumer and commercial audiences fall within the home audio, car audio aftermarket and OEM, in car entertainment, amateur radio, professional two-way radio and DECT wireless intercom sectors.



Kenwood offers a range of speakers at different grades ranging from stage sound to hi-fidelity.

X series[edit]

Amplifier Tech-Spec Maximum Output Power RMS Power at 4ohms RMS Power at 2ohms Bridged at 4ohms Frequency Response High Pass Filter Low Pass Filter Speaker Level Input Signal to Noise Ratio Dimensions W x D x H (mm)
XH901-5 1800W60W x 4ch + 400W75W x 4ch + 600W150W x 2ch + 400W20Hz - 50kHz50Hz - 200Hz, -12dB/oct50Hz - 200Hz, -24dB/octYes100dB260 x 169 x 51
XH401-4 800W75W x 4ch100W x 4ch200W x 2ch20Hz - 50kHz50Hz - 200Hz, -12dB/oct (Low Range) 2.5kHz - 10kHz, -12dB/oct (High Range)50Hz - 200Hz, -12dB/oct (Low Range) 2.5kHz - 10kHz, -12dB/oct (High Range)Yes100dB220 x 169 x 35

Amateur radio transceivers[edit]

Main article: List of amateur radio transceivers § Kenwood

Kenwood has offered lines of HF, VHF/UHF, and portable amateur radio models, including some with built-in digital data modes (Automatic Packet Reporting System, built on AX.25packet radio) and modems needed to send and receive these protocols.

KA Series hi-fi systems[edit]

Kenwood's series of "Integrated Amplifier" stereo power amplifiers, launched in 1977 and produced through the mid-1980s. The design for most of these items features a true dual-mono path for stereo output (in other words, no electrical components are shared between left- and right-channel amplification). Front plates were typically made in brushed aluminum with aluminum knobs and switches, glass covers, and in some cases analog VU meters.

Amplifiers in this series included (in no particular order)[4]

  • KA-1000 (11/1980)
  • TRIO Supreme 1
  • KA-2000
  • KA-2002 (09/1970)
  • KA-2200 (10/1982)
  • KA-3100
  • KA-6100 (1977)
  • KA-7002 (1971)
  • KA-7100 (10/1976)
  • KA-7300 (10/1975)
  • KA-8100 / KA-8150 (06/1977)
  • KA-8300 (with analog meters vs. 8100)
  • KA-9100
  • KA-900 (11/1980)
  • KA-907 / KA-9900 (10/1978)
  • KA-9100 / KA-9150 (1977)
  • KA-6100 / (1978/9)

NV Series hi-fi systems[edit]

These were a series of mini hi-fi systems launched in 2000, featuring a new design aesthetic.


The NV-301 and NV-701 both shared a three-layered half-mirrored design with the main difference lying in the specification of the two systems. The NV-301 was the basic model with two speakers and with a phono input (marked for MiniDisc and DVD players) while the NV-701 was a 5.1 Dolby surround sound model with A/V inputs. Both featured a three-disc carousel, a cassette player with Dolby B noise reduction, a natural display, intelligent features and the ability to save up to 40 radio stations, utilising microcomputers to reduce the size of the unit.

Communications equipment[edit]

Kenwood is a brand of JVCKENWOOD Corporation making two-way radios including wireless DECT intercom systems, PMR446, dPMR446, dPMR, P25, DMR and NXDN. The Kenwood communications product range includes hand-portable and mobile terminals (including Intrinsically Safe and ATEX / IECEx hand-portables), repeaters, infrastructure and application solutions.

  • 1949: High-frequency transformer passes the NHK (Japan Broadcasting Corporation) approval certificate for the first time in Japan.
  • 1955: Establishes the Tokyo and begins mass production of audio, communications and measuring equipment.
  • 1958: Company's first amateur radio goes on sale.
  • 1960: Renamed Trio Electronics, Inc.
  • 1962: Launches the industry's first transistor amplifier.
  • 1963: Sets up in the U.S., and begins full-scale overseas operations.
  • 1966: Introduces fully transistorised audio products for the first time in the industry.
  • 1969: The Trio TR-7100, 144 MHz amateur radio car transceiver goes on sale.
  • 1978: Introduces its first professional analogue two-way radios.
  • 1979: Establishes the company's first overseas production unit in Singapore.
  • 1983: Enters the U.S. land mobile radio market
  • 1986: Renamed Kenwood.
  • 1991: Enters the European licensed PMR (Private Mobile Radio) market.
    Begins selling license-free transceivers.
    Signs an official supply contract with McLaren to provide wireless radio equipment for the F1 championship.
  • 1995: The Mir space station carries Kenwood's amateur wireless equipment.
    TK-250 launched — Kenwood's first purpose designed PMR range for Europe.
  • 1996: Changes the subsidiary name from Trio-Kenwood to Kenwood, coinciding with the company's 50th anniversary.
  • 1997: Becomes Japan's first manufacturer to launch car-mounted DAB receivers.
  • 1999: Jointly develops the world's first mobile digital broadcast receiving system.
    Introduces Pro-Talk PMR446 license free two-way radio.
  • 2001: Releases its first digital transceiver operating on P25.
  • 2002: Develops a network interface module (NIM) for digital broadcasts via a communications satellite (CS).
  • 2005: Forms a technical and capital alliance with Icom to jointly research the standardisation of technical specifications for digital wireless radio equipment(NXDN).
    Kenwood Nagano Corp. acquires certification to “ISO/TS 16949”, the international standard for quality management specific to the automotive industry.
  • 2007: Kenwood announces 144/430 (440) MHz FM Dual bander TM-V71 series.
    Announcement of completion of acquisition of the U.S. systems-based communication company Zetron, Inc.
    Invested ¥20.0 billion and formed a strategic business alliance with Victor Company of Japan, Limited.
  • 2008: Notice of establishment of JVC Kenwood Holdings Inc.
  • 2010: Introduces its first ATEX certified analogue two-way radio.
  • 2011: Introduces NEXEDGE OTAP (Over The Air Programming)
    At the same time, JVC KENWOOD Holdings, Inc. changed its name to JVCKENWOOD Corporation. JVCKENWOOD Corporation completed an absorption of its three subsidiaries, Victor Company of Japan, Limited, Kenwood Corporation, and J&K Car Electronics Corporation.
  • 2012: Introduces KSDP (Kenwood Solutions Developer Programme)
  • 2013: Kenwood announces launch of the TS-990S amateur radio base station.
    Global launch of NEXEDGE ETSI certified dPMR digital two-way radios.
  • 2014: Acquires E.F. Johnson Technologies Inc.
  • 2015: Launch of NX-5000 Series multi-protocol (NXDN/DMR/P25) capable hand-portable and mobile radios.
  • 2016: Launches TH-D74E VHF/UHF dual-band handheld amateur radio with built-in GPS
  • 2016: Launches ProTalk WD-K10 Series DECT (Digital Enhanced Cordless Telecommunications) Intercom systems.
  • 2017: Launch of mid-tier NX-3000 Series multi-protocol (NXDN/DMR) capable hand-portable and mobile radios.
  • 2017: Acquisition of DMR Tier 3 and Simulcast solutions company Radio Activity S.r.l.[5]
  • 2018: Launch of high-specification, dual PTT ProTalk TK-3601D hand-portable dPMR 446 radio.
  • 2018: JVCKENWOOD acquires a minority share and announces a capital and business alliance with Tait International Ltd., a specialist in critical LMR and LTE communications solutions.[6]
  • 2018: Dorna Sports announce a three-year contract with JVCKENWOOD as the as radio communications sponsor of MotoGP™.[7]
  • 2019: Implementation of the world's first, scalable Single site, 64-Channel, NXDN trunked communications system at the new Istanbul Airport, planned to become the world's largest on completion of its development phases in 2025.
  • 2019: Launch of heavy-duty, dual PTT ProTalk TK-3701D hand-portable dPMR 446 radio.
  • 2019: Launch of low-tier, DMR/NXDN capable NX-1000 Series radio.


  1. ^The original company was absorbed into JVCKenwood, although some products made by the company still use the Kenwood brand.


External links[edit]


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Amplifier stereo kenwood home

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Kenwood KM-208 Home Stereo Power Amplifier with KC-208 Control Preamplifier

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