TRUMPET REFERENCE Vacuum Tube Phonostage

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1 TRUMPET REFERENCE Vacuum Tube Phonostage Made in USA.

2 TRUMPET REFERENCE Vacuum Tube Phonostage Copyrights & Trademarks Copyright 0. All rights reserved. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent. Disclaimer The information contained in this document is subject to change without notice. shall not be liable for errors contained herein or for consequential damages in connection with the furnishing, performance, or use of this material. Warranty warrants this product free of defects in materials and workmanship for a period of 0 years (90 days on tubes). If you discover a defect, will, at its option, repair or replace the product at no charge to you provided you return it during the warranty period, transportation charges prepaid to. This warranty does not apply if the product has been damaged by negligence, accident, abuse or misuse or misapplication, has been damaged because it has been improperly connected to other equipment or has been modified without the express written permission of. This warranty is limited to the replacement or repair of this product and not to damage to equipment of other manufacturers. Any applicable implied warranties, including warranty of merchantability, are limited in duration to a period of the express warranty as provided herein beginning with the original date of purchase and no warranties, whether express or implied shall apply to the product thereafter. Under no circumstances shall be liable for any loss, direct, indirect, incidental, special, or consequential damage arising out of or in connection with the use of this product. PO Box 9 Honolulu, HI

3 TRUMPET REFERENCE Vacuum Tube Phonostage Description The Trumpet Reference is a true reference-class phonostage for the most demanding of audiophiles. Based on the original Trumpet (Stereophile class-a recommended component), it adds pushbutton control of all functions, a second input, and upgrades for many of the components. The chassis has also been changed to reflect the reality of equipment racks by putting the power supply and amplifier boards in a side-by-side configuration. Status LEDs on the front panel indicate operational settings of the various functions. In addition to standard RIAA equalization, three other curves used in the LP "microgroove" era have been included. This combination of features, convenience, and sonic performance are unmatched at this price. Specifications Item Specification Gain db (MM) / db, 0dB (MC) Input Impedance k (MM) /,,,, 9,,, (MC) Output Impedance 00 ohm RIAA Response +/-0.dB from 0Hz to 0kHz Bandwidth Hz to 00kHz Distortion Noise 0dBA (MC) Size x x Weight 9 lbs. Power 0Vac / 0Vac, 0W Tube Compliment AX x, AU x

4 TRUMPET REFERENCE Vacuum Tube Phonostage Operation The Trumpet Reference installs between your turntable and linestage. Be sure to connect the ground lead to the grounding lug near the inputs. Connect the power cord to an AC source. Turn on using the power switch on the back panel. Press the POWER button on the front. Immediately the heaters will turn on and after a second delay the high voltage supplies will activate. Controls Control POWER EQ Description This button toggles power on and off. The left LED indicates heater voltage for the tubes; the right LED indicates high voltage. There are four settings defined by turnover and cut, arranged left to right: 00Hz / db (AES, early ffrr) 00Hz / db (Decca, EMI, late ffrr) 00Hz /.db (RIAA) 00Hz / db (Columbia, NAB) STEREO INPUT POLARITY GAIN Left LED is mono. Left LED is MM. Left LED is inverted (MC). There are two gain settings (MC): db (>0.mV cart) 0dB (<0.mV cart) LOADING There are eight loading settings (MC), arranged left to right: 9

5 TRUMPET REFERENCE Vacuum Tube Phonostage Commentary The Trumpet Reference responds admirably to tube rolling. New old stock (NOS) tubes are generally the best, offering various sonic improvements, with the final result becoming a matter of personal taste. Try to match in left/right pairs, to maintain equalization frequency balance. Always replace tubes with their equivalents! Do not use, for example, a AT in one of the AX locations. Starting from the rear of the unit, the tubes are in order: AX, AX, AU, AU. Cartridge loading depends on the length and type of interconnects used and it is always good to start with a value close to the manufacturer s recommendation. Generally, loading provided by the Trumpet Reference is effectively lower than the equivalent from a transformer. That is, if you like the sound from 00 ohm transformer loading (into the MM input), then try the ohm setting on the MC input. In the end, do not worry about numbers. Adjust to what your ears prefer. As far as gain selection, it is better to go with lower gain if possible. This optimizes overall headroom and distortion of the audio system. The EQ settings provide various curves for achieving better sound from your vinyl playback. The rd LED from the left is RIAA (modern) as will be used most often. The Decca and Columbia curves help with some older microgroove LPs. Again, this is adjusted for personal preference, and was never an exact science. Nevertheless, this can make a significant improvement for certain instruments such as violin and on vocals.

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7 C 00nF RES A0 P P P P P P P P0 0 SCL A A INT 0 U MCP00 S POWER S EQ S POL S STEREO S INPUT S GAIN S LOAD B B A B B A B B A A B0 A A A U 0 0 PICF A0 B 0 R 0k R 0k R 0k CLR SCL R R D D C 00nF R 0k 9 0 LOAD0 HEATER POWER LOAD LOAD MONO GAIN INPUT BASS CUT0 CUT POLAR MUTE R 00 R PO Box 9 Honolulu, HI 99 J MCLR GND PCLK PDAT SCL INT TX RX ENA VBB B+ H+ 0x0 J +V +V GND POW GND HEAT J LOAD0 LOAD LOAD GAIN MONO INPUT BASS CUT0 CUT POLAR MUTE J +V GND RX TX DIODES NOT SHOWN

8 R CLR D RES A0 P P 09 0 U MCP00 0 P P P P P P0 0 SCL A A INT 0 R D R D9 R D0 R D R D R9 D R0 D SCL R9 CLR D RES A0 P P 09 0 U MCP00 0 P P P P P P0 0 SCL A A INT 0 R0 D R D R D SCL C 00nF C 00nF PO Box 9 Honolulu, HI 99 0x00 0x0 D00 D0 D0 D0 D D D D D D0 D09 D0

9 SCL CLR 0 0 SCL A A A0 0 RES 09 U MCP00 P P P P P P P P0 0 INT 0 0x0 R R R R R R R R D D D D D9 D0 D D D D D D9 D0 D D D PO Box 9 Honolulu, HI 99 C 00nF

10 LOAD0 ENABLE C 00nF RES A0 P P 09 0 U MCP00 0 P P P P P P0 0 SCL A A INT 0 SCK R R R R R0 R9 Q ZTX9 Q ZTX9 Q ZTX9 Q ZTX9 Q ZTX9 Q ZTX9 LOAD LOAD MONO GAIN INPUT PO Box 9 Honolulu, HI 99 0x0

11 BASS ENABLE C 00nF RES A0 P P 09 0 U MCP00 0 P P P P P P0 0 SCL A A INT 0 SCK R0 R9 R R R R Q ZTX9 Q ZTX9 Q0 ZTX9 Q9 ZTX9 Q ZTX9 Q ZTX9 CUT0 CUT POLAR MUTE HEATER Q ZTX9 R POWER PO Box 9 Honolulu, HI 99 0x0

13 L D N L D N T FX D N D N C 0mF ADJ OUT U KARA0 C mf C 0nF C 0mF N N VAC VAC 00VAC 00VAC +00V +V -00V +V POWER HEATER R D LED +V PO Box 9 Honolulu, HI 99 J +00V +V GND +V GND -00V J +V GND +V GND POWER HEAT

14 VAC VAC D N D N D N D N HEATERS S C 0mF C 0mF C 0mF U KARA0 R 0R OUT C9 mf ADJ R 0 U KARA0 OUT R 0R C 0mF C0 mf ADJ R 0 PO Box 9 Honolulu, HI 99 +V R D LED

15 SIG-IN SIG-IN R k C 0nF C 0nF R k POWER S S D9 N00 D0 N00 D N00 D N00 R 0 C 0nF C 0nF R 0 L J R9 00 L J C 00uF C 00uF L J R0 00 L J PO Box 9 Honolulu, HI 99 R 0 C 00uF C 00uF R 0 +0V R 00k D LED D LED R 00k -0V

17 C 00uF -0V +0V C 00uF C uf C uf R R C 00uF C 00uF C uf C uf +0V -0V 9 0 LOAD0 LOAD LOAD MONO GAIN INPUT BASS CUT0 CUT POLAR MUTE +V PO Box 9 Honolulu, HI 99 J +00V +V GND +V GND -00V J LOAD0 LOAD LOAD MONO GAIN INPUT BASS CUT CUT0 POLAR MUTE

18 R* 0 S Z J* LOAD S Z R* 0 S Z R* 00 R* LOAD LOAD0 S Z MONO C9* mf QA* LSK9 QB* LSK9 R* 0k R* 0k R* 0 R* 00 S* Z R0* k R* k C* 0nF PRE+ GAIN C0* mf +0V -0V C* 0pF C* 0nF PRE- R* R 00k R9 00k R 00k R 00k R* D V D V PO Box 9 Honolulu, HI 99

19 PRE+ J* R* 0k INPUT MONO INPUT+ R0* k S* Z S* Z PRE- INPUT- R9* 0k PO Box 9 Honolulu, HI 99

20 +0V R0* 0k R* 0k C* nf R* 0k S Z R* k BASS INPUT+ INPUT- BASS- C* 0nF C* 0nF BASS+ R* 0 VA* AX VB* AX R* 0 R* 0k R* 0k D* N R* 0k R* 0k R* 0k C* 0uF R9* 0k -0V PO Box 9 Honolulu, HI 99

21 VA* AX R* 0k R* 0 R* 0k R* 0k C0* 0uF VB* AX R9* 0k R* 0k R* 0k R* 0 R0* 0k R* 0k D* N BASS- BASS+ S0 Z CUT0 S9 Z C* 0pF R* k C* 0pF R* 0k CUT R* 0k C9* 0pF R* k EQ- EQ+ +0V -0V PO Box 9 Honolulu, HI 99

22 VA* AU R* 0 R* 0 VA* AU R* 0 R* 00k C* uf R* 0k EQ+ S Z J* R0* 0 R* 0 VB* AU VB* AU R* 0 R* 0 R9* 0 R* 0 EQ- C* uf R9* 0k R* 00k R* 0 S* Z POLAR MUTE D* N D* N +00V R0* 00k R* 00k -00V PO Box 9 Honolulu, HI 99

CR10XTCR THERMOCOUPLE REFERENCE

CR10XTCR THERMOCOUPLE REFERENCE REVISION: 01/01/03 COPYRIGHT (c) 1995-2003 CAMPBELL SCIENTIFIC, INC. This is a blank page. WARRANTY AND ASSISTANCE The CR10XTCR THERMOCOUPLE REFERENCE is warranted by CAMPBELL