5196105882

AUDIO New Eguipment Reports

FM SENSITIVITY & OUIETING

ONKYO %    « u su • •»

Y -

*

O Q: O 0 0 0 □ 0 D C

- stereo quietmg (noise)

-----mono qu>eting (noise)

Stereo sensitivity (tor 50-d8 noise suppression)

37% dBf at 98 MHz. with 0 34% THO * N (37dBfat90MHz.37%dBfat 106MHz) Mono sensitivity (for 50-dB noise suppression) 13% dBf at 98 MHz Mutmgthreshold 16% dBf Stereo ihreshold 14 dBf Stereo S/Nraho(at 65 dBf) 65% dB Mono S/N ratio (at 65 dBf) 73% dB
CAPTURE RATIO	1 dB
SELECTIVITY (altemale-channel)	58% dB
HARMONIO DlSTORTlON(THD * N) stereo at 100 Hz 0 28% at 1 kHz 0.23% at 6 kHz 0.29%	mono 0.18% 0.11% 0 24%
STEREOPILOT INTERMODULATION	031%
IM DISTORTION (mono)	0 098%
AM SUPPRESSION	46 dB
PILOT (19 kHz) SUPPRESSION	76 dB
SUBCARRIER(38 kHz)SUPPR	>94 dB

Amplilier section

RATED POWER    18% dBW (70 wattsKchannel

Flip-down (bor reveals tonę Controls. speaker se/ector. headphone jack. fi/ters. modę and londness sn itches. and other relative/v "esoteric" Controls.

OUTPUT AT CLIPPING (bothchannels dnven) 8-ohmload    19% dBW (89 watts)/channel

4-ohm toad    21 % dBW (133 Aratts^channei

16-ohm load    17% dBW (56 *alts)/channel

DYNAMlC HEADROOM (8 ohms)    2 dB

HARMONIO DISTORTION(THO. 20 Hz to 20 kHz) at 18% dBW (70 watts)    50 013%

at0dBW(l watt)    <0 011%

FREOUENCY RESPONSE

*0. -%dB. 14 Hz lo 20 8kHz * 0. -3 dB. «-10 Hz to 56 6 kHz

RIAAEOUALIZATION

tixed*coii mput    i % dB. 20 Hz lo 20 kHz.

-4% dB at 5 Hz

movmg-coil mput ♦ %. -1 dB. 29 Hz to 20 kHz.

-11 V« dB al 5 Hz

INPUT CHARACTERlSTlCS (re 0 dBW. A-weightmg)

	sensitivity	S/Nralio
tape	l9mV	76% dB
fixed-cotl phono	0 32 mV	74 dB
movmg-coil phono	44 yV	67%dB
PHONO OVERLOAD(clippmgat 1 kHz)
fixedcoii		230 mV
movingcod		31 mV
PHONO IMPEDANCE
fixed-coilinput	48k ohms: 230 pF
movmg-corl mpu!	350ohms
DAMPING FACTOR (at 50 Hz)		75

HIGHFILTER    -3dB al 5 4 kHz 6dB'OCtave

INFRASONICFUTER -3 dB at 14 Hz 6dB octave

action. though a touchup with ihe tono Controls will make the curve anything within reason that vou mieht want it to

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be. The lone Controls themselves are centered a li (de higher than usual: the irfbi.f. Ieaves the rangę helów I kHz vir-tuallv unaflected. but the bass has some influence as high as 2 kHz. Except at maximum bi>ost. w here the trfbi.k is up morę than 15 dB at 20 kHz and the bass peaks by 23 dB at 40 Hz. the tonę Controls introduce change by gentle. well-judged increments. I he tilters. too. are gentle in ńeir action. presumably in the interest of signal phase integrity and al some expense in effectiveness.compared to slopes of 12 dB per octave.

Ihe most unusual part of the switching system is the group of five tali buttons at the right. next to the noi.ume. Numbering them serially from the left. I and 2 are the tape mon i tors: w hen you press both. the TX-6000 is placed in the tape-copy modę. which enables transfer only from Tape I to Tape 2 and will not allow cop\ing while you listen to another source. The main selector is Button 4. which switches between piiono and ii nlr: Button 3 selects MC (moving-coil) or MM (fixed-coil) phono pickups. while Button 5 chooses AM or I M for the tuner modę. There is no u x. so—if you need the function—you musi pre-enipt one of the tape input connections. Of course. the latter need not be saved for such devices as speaker equalizers or dynamic-range processors (the EPS will take care of them). but this part of the design necds care ful evaluation bv a u-diophiles who recjuire morę switching flexibility than average. For most users. however. it should be ample.

Also morę than adequate is the powtr amplifier section. which uses On-kvo*s Super Servo circuitry for a reputed inerease in imaging and clarity and a de-crea.se in internal impedance and cross-

talk. Be that as it mav. we find it verv

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clean and powerful: the 2-dB dynamie heaJroom pegs musie outpul as the equivalent of something morę than 100 watts per channel. (Incidentally. the power display to the left of the tuner*s frequency readout cannot be turned off.) Whal distortion could be measured con-sisted of relatively benign second-order components. Response is ver\ flat through all the receiver*s elements. de-spite a minor rollotf in the extreme bass of the FM response and. to a lesser de-gree. in the moving-coil phono section.

Curiously. Onkyo calls this receiver a "tuner amplifier.” though that‘s exacllv

whal it is not. The sort of buver who

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really wants the extras that eonie with separates. but who wants to buv them in one package. is also the sort w ho is most likely to want a meter rather than the signal-strength LED display-lo help him achieve optimum antenna ori-entation. or who w ill need extra inputs. Onkyo has kept the price of the TX-6000 surprisingly Iow. considering its quality and its capabilities. by avoiding such speci il-interest features. To put it another wav. one of the strengths of this *

model is that it is designed throughout as a receiver. with no pretensions to being anvthing else. Ever\ feature seems to

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have been weighed in that context. and the result represents an excellent value for a large slice of the music-listening public.

Circle ł.U on Reuder-Serriee Card

< Clrcl* 50 on RMdtr«Strvlc« Card

Report Policy: =quipment reports are based on labora-tory measurements and controlied listening tests Unless otherwise noted. test data and measurements are ob-tamed by Diversttied Science Laboratories The choice of equipment to be tesled rests with the editors of High Fiocuty Samptes normaliy are supphed on loan from the manufacturer. Manufacturers are not perrntted to read

reports m advance of pubiication. and no report or por-tion theieof may be reproduced for any purpose or in any form witnout written permission of the Publisher All re-ports should be construed as applymg to the specific sampiestested h»gm Fidciity and Oiversified Science Laboratories assume no responsibihty for product performance orquahty

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