LaChapell Audio 992 Tube Mic Pre - Manual (Page 6)

5
• -
20dB :
If needed the user can pad the microphone inputs using the -20db attenuator. This adjustment takes
place before the first input tube . This function is defeated while the Hi-Z inputs are engaged.
•
POLARITY REVERSE :
Some of the more common reasons to use this would be to reduce feedback in
a live environment, enhance the stereo image of certain content or to assist in eliminating headphone signal
bleed through during a recording session.
•
MUTE :
Each channel is equipped with its own mute function. The LED indicates the mute function is
engaged; output signal is completely cut. However, the meter will still monitor the output level whether mute is
engaged or not (unless it too is switched off.)
Warranty:
LaChapell Audio warrants that for a period of one year after the date of delivery, the Products
delivered hereunder shall perform in accordance with the written product specifications current as of the date of
shipment and under normal use shall be free from defects arising from selection of material or process of
manufacture. LaChapell Audio agrees to repair or replace at its principal business office in California or other
authorized repair center, without charge, all defective parts in the Products which are returned for inspection to
said center within the warranty period; provided such inspection discloses that the defects are as specified above,
and provided further that the Products has not been altered or repaired other than with authorization from
LaChapell Audio and by its approved procedures, not been subjected to misuse, improper maintenance, negligence
or accident or otherwise had its serial number or any part thereof altered, defaced or removed. All shipping and
insurance costs for the Products repaired or replaced under warranty are the responsibility of the party shipping the
Products. All defective items replaced hereunder shall become the property of LaChapell Audio
Specification
• Internal Gain: >52dB (>74dB 992EG)
• Max output gain: +24dBu (1% THD+N)
• Frequency Response: 12hz to >110khz (-3dB, output favored)
10hz to >100khz (992 EG)
• THD+N: <.25% (@50db gain, 0dBu out)
• SNR: (30db gain) >85dB (91dB 992EG)
(Rg=150, 22hz – 20khz)
• Input Impendence: 8.2khom (1.4kohm 992EG)
1.2Mohm: Hi-Z (140kohm 992EG)
•
Tube Complement: (4) 6072, (4) 12AU7
(4) ECC83, (4) 12AU7 (992EG)
NOTE: Stated specifications are typical measurements but subject to change without notice due to individual traits unique to each
tube. All measurements taken while driving a 40kohm load and using a 1khz tone.
© 2005~2006 LACHAPELL AUDIO
3144 N. G st. #125-354
Phone 209-383-3486
www.lachapellaudio.com