Description
Carver CT-6 Pre Amplifier Tuner with Sonic Holography. Excellent Condition. (SEE the Carver TFM-25 I have listed.)SPECS:The frequency response of the Carver CT-6’s preamplifier section (through the CD input) was flat within + 0, - 0.5 dB from 20 to 10,000 Hz and down 1.1 dB at 20,000 Hz. The tone controls had a maximum range of +11, -12 dB at 20 Hz, and +9, -11.5 dB at 20,000 Hz. The bass control’s turnover frequency varied from below 100 Hz to about 400 Hz, and the treble control’s response curves were hinged at about 3,000 Hz. At its extreme counter-clockwise setting the bass control also reduced the overall level by 2 dB, but otherwise the controls had no effect on frequencies beyond their designed ranges of operation.The RIAA phono-equalization error was ± 0.4 dB from 20 to 2,500 Hz and down 1.5 at 20,000 Hz. The loudness compensation boosted both low and high frequencies slightly at most usable settings, by a maximum of about 7 dB at 20 Hz and 2 dB at 20,000 Hz.The input sensitivity for a 0.5-volt reference output at 1,000 Hz was 136 millivolts (mv) for the CD input and 2.2 mv for the phono input. The A-weighted signal-to-noise ratio (S/N) was 94.5 dB for CD and 69.7 dB for phono. The clipping-level output of the preamplifier into an EIA standard load of 10,000 ohms and 1,000 picofarads (pF) was 3.85 volts. The phono preamplifier overloaded at inputs between 136 and 142 mv over the range of 20 to 20,000 Hz. Its input termination was 47,000 ohms in parallel with 114 pF.The 1,000-hz total harmonic distortion plus noise (THD + N) was between 0.04 and 0.05 percent from an output of 2 volts to the clipping point. A spectrum analysis of the distortion at a 1-volt output showed several low-level harmonics, corresponding to a THD of -84 dB, or 0.006 percent. id=aswift_4 name=aswift_4 browsingtopics=true sandbox=allow-forms allow-popups allow-popups-to-escape-sandbox allow-same-origin allow-scripts allow-top-navigation-by-user-activation width=728 height=90 frameborder=0 marginwidth=0 marginheight=0 vspace=0 hspace=0 allowtransparency=true scrolling=no allow=attribution-reporting; run-ad-auction src=https://googleads.g.doubleclick.net/pagead/ads?client=ca-pub-5026228084405652&output=html&h=90&slotname=1251013726&adk=3419656466&adf=3229936255&pi=t.ma~as.1251013726&w=728&abgtt=1&lmt=1728504157&format=728x90&url=https%3A%2F%2Fwww.hifi-classic.net%2Freview%2Fcarver-ct-6-23.html&wgl=1&uach=WyJXaW5kb3dzIiwiMTAuMC4wIiwieDg2IiwiIiwiMTI5LjAuNjY2OC45MCIsbnVsbCwwLG51bGwsIjY0IixbWyJHb29nbGUgQ2hyb21lIiwiMTI5LjAuNjY2OC45MCJdLFsiTm90PUE_QnJhbmQiLCI4LjAuMC4wIl0sWyJDaHJvbWl1bSIsIjEyOS4wLjY2NjguOTAiXV0sMF0.&dt=1728504157102&bpp=3&bdt=5741&idt=3&shv=r20241007&mjsv=m202410070101&ptt=9&saldr=aa&abxe=1&cookie_enabled=1&eoidce=1&prev_fmts=0x0%2C728x90%2C728x90%2C728x90&nras=1&correlator=1659358044555&frm=20&pv=1&u_tz=-240&u_his=5&u_h=864&u_w=1536&u_ah=784&u_aw=1536&u_cd=24&u_sd=1.25&dmc=8&adx=398&ady=2704&biw=1519&bih=698&scr_x=0&scr_y=0&eid=44759876%2C44759927%2C44759842%2C95343455%2C95344525&oid=2&pvsid=2630355448286585&tmod=483015782&uas=0&nvt=1&ref=https%3A%2F%2Fwww.google.com%2F&fc=1920&brdim=0%2C0%2C0%2C0%2C1536%2C0%2C1536%2C784%2C1536%2C698&vis=1&rsz=%7C%7CeEbr%7C&abl=CS&pfx=0&fu=0&bc=31&bz=1&td=1&tdf=2&psd=W251bGwsbnVsbCxudWxsLDNd&nt=1&ifi=5&uci=a!5&btvi=3&fsb=1&dtd=13 data-google-container-id=a!5 tabindex=0 title=Advertisement aria-label=Advertisement data-load-complete=true style=box-sizing: border-box; left: 0px; position: absolute; top: 0px; border-width: 0px; border-style: initial; width: 728px; height: 90px;>The FM tuner had a usable sensitivity of 12.8 dBf in mono and, unlike most other tuners, had no stereo threshold. Stereo signals were received with full separation down to the lowest measurable levels, with a usable sensitivity in stereo of 18 dBf. The 50-dB quieting sensitivity was 25.5 dBf for mono, 38 dBf for stereo.The S/N at 65 dBf was 79 dB in mono and 72 dB in stereo, with corresponding distortion readings of 0.1 and 0.062 percent. Stereo channel separation was between 40 and 45 dB from 30 to 10,000 Hz, falling to 36 dB at 15,000 Hz.The capture ratio was 2.2 dB, and am rejection was 67 dB. Image rejection was a rather low 45 dB, but selectivity was good, measuring 66 dB for alternate-channel spacing and 12 dB for adjacent-channel spacing. The 19,000-Hz pilot-carrier leakage was - 67 dB, and the 38,000-hz subcarrier was at a low — 70-dB level. The fm frequency response was flat within ± 0.2 dB from 30 to 10,000 Hz and down 1.1 dB at 15.000 Hz. The am frequency response was down 2.5 dB at 20 Hz and 6 dB at 3,900 Hz relative to the 1,000-Hz level.
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