The Lectrosonics PA8 is an eight-channel, single rack space amplifier ideal for zoned, distributed loudspeaker systems. It has eight separate amplifiers within the chassis, each with an output power of 6 watts at 8 ohms or 10 watts at 4 ohms. Passive cooling and short-circuit protection ensure that the PA8 remains stable and reliable.
Main Benefits
- 8 separate amplifier channels
- 10 Watts per channel into 4 Ohms in non-bridged mode, 20 Watts per channel bridged into 8 Ohms
- Passively cooled
- Full short circuit and thermal overload protection
- No turn-on “thump”
- Single-space rack unit
- Each of the eight internal amplifiers is capabable of outputting 6 watts at 8 ohms or 10 watts at 4 ohms
- Short circuit and thermal overload protection
- Outputs are muted when the unit is turned on and off to eliminate transients
- Supports bridged and non-bridged output
- Front-panel volume control of each channel
Description
The PA8 8 Channel Power Amplifier is a unique single rack-space solution for zoned, distributed loudspeaker systems with eight separate power amplifiers, each with an output power capability of 10W (4 Ohms) or 6W (8 Ohms.)
The PA8 is passively cooled, and features full short circuit and thermal overload protection. The amplifier outputs are muted at turn-on and turn-off to eliminate transients.
The PA8 uses a straightforward, low parts count design for long term reliability. The heart of the power supply is a low radiation toroidal transformer. The toroidal transformer generates less heat than a comparable non-toroidal type, and emits considerably less 60Hz energy. This is particularly important when the PA8 is used in close proximity to microphone pre-amplifiers. The input to the PA8 is fully balanced and RF filtered. The level control feeds a monolithic power amplifier. Each power amplifier is internally power limited to protect itself from short circuits, excessively low impedances, or highly reactive loads. Thermal limiting is also integrated into the power amplifier, with an intelligent shutdown mode that minimizes thermal shock to the device under extreme operation. Any two channels may be used in the bridged mode for higher power (20W/8 Ohms or 12W/16 Ohms).
Tech Specs
| Output Power |
10W into 4 ohms
6W into 8 ohms
20W into 8 ohms with Bridge-Mono |
| Damping Factor |
Not Specified by Manufacturer |
| Input Sensitivity |
-2 dBu (615VRMS) Maximum |
| Input Impedance |
20 k ohms |
| Gain |
20 dB |
| Frequency Response |
Not Specified by Manufacturer |
| Signal-to-Noise Ratio |
88 dB |
| Total Harmonic Distortion (THD) |
Less than 0.1% |
| Input Connections |
8 x Line Inputs (Balanced/Unbalanced) |
| Output Connectors |
8 x Speaker Outputs (Minimum 4 ohm Load Non-Bridged) |
| Controls Front Panel |
1 x Power Switch
8 x Volume Controls |
| Controls (Rear) |
None |
| Indicators |
Front-Panel Power LED |
| Cooling |
Passive Cooling |
| Power Consumption |
200W Maximum at 120VAC |
| Dimensions (WxHxD) |
19 x 1.75 x 8.25" (483 x 44 x 210mm) |
| Weight |
8.6 lbs (3.9 kg) |
| Specialties |
Short Circuit and Thermal Overload Protection |
Contents
- 1 - Power Cord (Part #21499)
- 2 - 10 Position Connector (Part #21500)
- 4 - 4 Position Connector (Part #21548)
