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The Genelec 1238A Tri-Amplified SAM Monitor System comes from the company's 35+ years of designing and building professional three-way monitors for recording studios, post-production houses, digital mastering facilities, radio, and TV broadcasting companies. The monitor uses a 500-watt powered 15" low frequency woofer, a 250-watt powered mid-frequency woofer that is handmade in Finland, and a 200-watt powered 1" metal dome high frequency tweeter in a proprietary large Directivity Control Waveguide (DCW) to deliver an extended low frequency response of 30 to 22,000 Hz (-6 dB). The waveguide helps maintain balanced on- and off-axis imaging for even the most acoustically challenging environments.
Power is supplied by the 3U removable and rackmountable RAM-L amplifier module that uses a Class D amplifier design for the low and mid frequencies combined with a Class AB design for the treble. The amplifier module supports rapid system configuration as well the automatic room response calibration for fast and accurate monitor installations. The monitor is also equipped with the company's Genelec Loudspeaker Manager Control Network Technologies for integrating multiple monitors together to build stereo and surround systems.
For I/O the monitor features both an analog XLR input with a 10 kΩ impedance as well as an AES/EBU XLR digital input. It also includes an AES/EBU XLR digital Thru/Output for connecting to additional monitors using the Genelec Loudspeaker Manager Control Network technology (GLM) with four low frequency notch filters, two high frequency notch filters, two low frequency shelving filters, and two high frequency shelving filters. The monitor can be positioned either vertically or horizontally on its side by rotating the mid/high unit 90°.
Genelec Loudspeaker Manger (GLM)
Enables automatic alignment of every monitor on the network for level, timing, and equalization of room response anomalies
Calibrates monitor for operation in room
Provides modular removeable and 3U rackmountable amplification with class D amplification for bass and mids as well as class AB amplification for highs
Directivity Control Waveguide (DCM)
Provides excellent on and off-axis imaging even in difficult acoustic environments
Can be positioned either vertically or horizontally by rotating the mid/high unit 90°
In the Box
Genelec 1238A Tri-Amplified SAM Monitor System (15" LF Woofer)
Limited 2-Year Warranty
Table of Contents
Analog Input: XLR Digital Input: AES/EBU XLR single wire or dual wire Digital Output/Thru: AES/EBU output XLR single wire or dual wire Control Network: 2x RJ45 CAT5 cables (Proprietary GLM network) Amp Module External: 2x Speakon (when separate from monitor)
16 to 24 bits
32 to 192 kHz
Digital (100 dB SPL at 1 m): -30 dBFs
Input Gain Adjustment
Digital: 0, +6, +12, +18 dB
Bass/Mid: 420 Hz Mid/Treble: 3,000 Hz
Notch Filters: 4 LF and 2 HF Shelving Filters: 2 LF and 2 HF
Genelec GLM AutoCal
Analog Input Impedance
15" low frequency woofer 5" Finnish made midrange frequency woofer 1" metal dome high frequency tweeter with Directivity Control Waveguide (DCW)
LF: 500 W of Class D amplification MF: 250 W of Class D amplification HF: 200 W of Class AB amplification
Amplifier at Nominal Output: <0.01%
Bass: > 115 dB Midrange: > 115 dB Treble: > 115 dB
Low Cut Frequency
< 33 Hz
High Cut Filter
> 21,000 Hz
30 to 22,000 Hz (-6 dB) Free Field: 35 to 20,000 Hz (±2.5 dB)
Short Term Sine Wave On Axis from 100 to 3,000 Hz at 1 m: > 121 dB Long Term RMS At Same Conditions: > 116 dB
Max Peak SPL
Per Pair In Listening Room With Music Material At 2 m: >124 dB
< 10 dB
At 95 dB SPL at 1 m on axis 50 to 200 Hz: < 1% Over 200 Hz: <0.5%