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[DOC File]Restoring a Dynaco ST-70 Tube Amplifier
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Here is a photo with the cage removed from the chassis. As you can see, the 4 large outer tubes are EL34’s the 2 smaller tubes on the printed circuit board are 7199’s and the other tube is a 5AR4 rectifier tube. In front of the center transformer are 2 10K potentiometers you use to set the bias at 1.56 volts of the EL34 audio power tubes.
2 channel preamplifier

[DOC File]LS 100 OWNERS MANUAL
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HT/BP input is meant for integrating 2CH into a Multi-Channel or Home Theater system. When used in this mode, home theater preamp or processor is connected to HT/BP inputs and signal is output straight to 2CH main stereo outs. This allows direct connection to front L/R channel amp(s) with no sonic impact from LS 100 preamp. Input Selection:
2 channel stereo preamp

[DOC File]TABLE OF CONTENTS - Rogue Audio
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Dip –2 and Dip-3 are used to set the cartridge loading according to the following table: A 75 ohms B 150 ohms C 300 ohms D 1,000 ohms (1K) None 2,500 ohms (2.5K) To select the desired loading, slide the appropriate DIP switch over towards the right side (the “on” position). DIP-2 is for the left channel and DIP-3 is for the right channel.
2 channel mic preamp

[DOC File]images4.static-thomann.de
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The Jet City Amplification JCA100H/50H is a 100 (or 50) watt, 2-channel guitar amp head with independent preamp and master volume controls for each channel. The tone controls shape the sound of both channels and are interactive which means that each control will affect the others.
best 2 channel preamp

[DOC File]The M9Phono pre-amplifier - WELLINGTON AUDIO
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The volume control is an in house designed and hand made stereo attenuator with silver contacts and 1/2 watt Audio Note™ tantalum resistors throughout. On the input side the M9 also offers some novelty in that, apart from the MM phono input, it has 3 line inputs one of which is a transformer coupled XLR balanced CD input, to allow for fully ...
best 2 channel mic preamp

[DOC File]Baseline Restoration for ATLAS MDTs_20 August, 1997__J
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Figure 2: Cascode n-channel preamp. Input impedance at low frequencies is determined by open loop gain (Gm x R1) and feedback resistor R2. At high frequencies, it is determined by Gm1 and feedback and stray capacitance. Resistors and capacitors are chosen so that both are equal to 120( in spice simulation.
2 channel mic pre

[DOC File]GFA-7000 Owners Manual
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It will reset. Power LED glows, Preamp or source unit is not on. Make sure whole system is on. but no sound Connections in rear of amp are loose. Verify all connections on rear of amp. One channel not producing sound Input(1) or Output(2) connectors disconnected or loose. Verify both sets of connections on that channel. Speaker disconnected.
tube stereo preamplifiers

[DOC File]The Unofficial History of the Mesa/Boogie Mark Series
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The clean channel on this is very nice, but some argue that EQ is needed on the lead channel to be able to dial the midrange out in order to get something other than the "Santana" tone. The IIA and IIB, and some late-model Mark I amps used a silicon device called "fetron" in place of one of the 12AX7 preamp tubes, and included a switch for ...
tube preamps for home stereo

[DOCX File]FrogPedals.com – Cuz they's made for Giggin'
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The Frog Tube Preamp PCB add-on channel is designed to be used as an additional channel to the Frog Tube Preamp 2.0. There . are two specific differences. between the 2.0 and 2.1 add-on versions. 2.0 has a high voltage SMPS power supply on-board, 2.1 add-on does not. That means that, for the 2.1 add-on, you must provide about 180VDC in order to ...
2 channel preamplifier

[DOC File]Korg USA
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A blendable solid-state and tube preamp can be preset and also selected via footswitch, serving up a wealth of tones from clear and clean through to fat overdrive. ... the ABM 1000 is a 2 x 500W power amplifier, delivering massive punch, headroom and volume. ... Each channel also has its own massive toroidal transformer, ensuring that power ...
2 channel stereo preamp

2 channel tube preamp