Model 329AD Product Description

Model 329AD – shown with customer removable rack mount ears

Specifications

  • Power Line Voltages: User Selectable: U.S./ Canadian 105 volts 120 volts, 50/60 Hz
  • International: 210 volts-240 volts, 50/60 Hz
  • Power Consumption: 20 Watts
  • Size: Width: 19″ (483 mm) with rack mount ears attached, 17” (432 mm) without ears
  • Depth: 8″ (203 mm), Height: 3.5″ (89 mm).
  • Unit weight with mouting ears: 6 lbs (2.72 Kg.)
  • Inputs and Outputs RCA-type phono connectors for all signal input and output terminations.
  • Five stereo inputs: 3 phonograph (2 MM and 1 MC), 2 high level (1 flat or RIAA switchable)
  • Input impedance 100k Ohms (Phono inputs 50k Ohms)
  • Output impedance 470 Ohms
  • Mode Three position selector, Stereo, Monaural, Vertical (monaural) for vertical-cut discs and cylinders
  • Noise Suppression Two transient noise suppressors (TNS’s), one in each channel, for click and pop suppression
  • Two continuous noise suppressors (CNS’s), one in each channel, for hiss or white noise suppression
  • Stereo Equalization Bass control, ± 10 dB at 100 Hz
  • Treble control, ± 10 dB at 10 kHz
  • Monaural Equalization Eight position turnover selector, 0 (flat), 250, 300, 400, 500 (LP), 500 (RIAA), 700, and 1000 Hz
  • Six position rolloff selector, 0 (flat), 5, 8.5, 12, 14, and 16 dB at 10 kHz
  • Equalization coverage includes FLAT, FFRR, AES, RIM and LP
  • Rumble filter switch, 100 Hz corner, 12 dB/octave
  • Sensitivity: With INPUT LEVEL control all the way up, a 0 VU (1.23 v.) reading of the processing level meters will be achieved by an input signal of by 0.4 v. or less from a single-ended source. Range of control of INPUT LEVEL potentiometer is 20 dB. Unity gain is achieved with the Volume Control and Output Level controls set at mid-position.
  • Frequency Response: (Continuous noise suppressor off and equalizations flat) 20 to 18 kHz ± ½ dB
  • Continuous noise suppressor cutoff frequency range 2.5 to 18 kHz
  • Cutoff frequency slope: approaches 12 dB per octave
  • Continuous Noise The Continuous Noise Suppressor is a low pass filter. Cutoff frequency varies in accordance with Suppressor Action: the dynamics of the program material and the nature of the surface noise. Alternatively, a fixed cutoff frequency may be selected.
  • IM Distortion: 60 Hz and 7 kHz, 4:1 at + 4 vu (1.23v.) input: Less than .05%
  • Harmonic Distortion: Less than .05%
  • S/N Ratio: (Unweighted) – At least 75 dB with reference to + 12 vu (3 v.)
  • Warranty: One year parts and labor.

NOTE: To take full advantage of the transient noise suppressor (TNS), you should play back discs or cylinders stereophonically

For more details, see the Model 329AD owner’s manual page.

Packburn model 329AD Rear Panel shown below.