Specifications, Using the link switch

2-4. Using the link switch

Turn on the link switch if you want to use stereo compression.

When youÕre recording a stereo source, and the level of one channel rises to the point where compression is being applied to only that one channel, then the relative volume of the other channel will increase, producing the impression that the stereo image has shifted to one side. In such cases, turning on the link switch will automatically apply compression to both channels at the same time, whenever either channel reaches the compressorÕs threshold level.

So that the compressors for both channels will function in the same way, select the same compressor mode setting for both channels (either Fast or Slow). You should also set the compressor sensitivity knob to about the same setting for both channels.

3. A note about the vacuum tubes

This device contains vacuum tubes. We recommend that you allow the tubes to warm up for about ten minutes after you turn on the power, before you begin running any audio signals through the TPB-2.

If you begin using this device immediately after turning on the power, this may cause malfunctions and/or shorten the life of the vacuum tubes.

In order to maximize reliability, avoid placing this device above or below heat-producing equipment such as a power amp.

Do not attempt to remove, replace or change the tubes in the TPB-2. The tubes are not a user serviceable part.

Vacuum tubes generate heat. Do not allow your skin to contact the vacuum tube cover for an extended period of time. Doing so can cause low-tempera- ture burns.

4. Specifications

Input connectors: XLR-3-31 type (+48 V phantom power, switchable), 1/4Ó TRS phone jack (balanced / unbalanced is Hi-Z)

Input impedance:4 k (XLR-3-31), 10 k (TRS phone Jacks), 1 M (TRS phone Jacks is Hi-Z)

Nominal level: Ð60 dBu to Ð12 dBu @ TRIM=max. Ñ min PAD OFF Ð34 dBu to +14 dBu @ TRIM=max. Ñ min PAD ON

Maximum level: Ð48 dBu to 0 dBu @ TRIM=max. Ñ min PAD OFF Ð22 dBu to +26 dBu @ TRIM=max. Ñ min PAD ON

Hi-Z

Ð48 dBu to 0 dBu @ TRIM=max. Ñ min PAD OFF

Ð22 dBu to +12 dBu @ TRIM=max. Ñ min PAD ON

Source impedance:	600
Vacuum tubes used:	12AX7
Compression method: Vacuum tube compression using a photocoupler
Principal specifications
Frequency response:
10 Hz - 20 kHz ±1 dB @ fs 44.1 kHz, +4 dBu, 10 k load
10 Hz - 22 kHz ±1 dB @ fs 48 kHz, +4 dBu, 10 k load
10 Hz - 44 kHz ±1 dB @ fs 96 kHz, +4 dBu, 10 k load
S/N:	93 dB (typical)