1. Bubuka jeung Leuwihview
This manual provides essential information for the safe and efficient operation of your Bosch Plena PLE-1ME120-US Mixer Amplifier. Please read this manual thoroughly before installation and use, and retain it for future reference.
The Bosch Plena Economy mixer amplifiers are professional public address units designed for ease of use. They integrate modern state-of-the-art features to simplify operation, making it straightforward to deliver crisp calls or clear music. This amplifier offers the core functionalities required for public address systems in an accessible and affordable package.
2. Émbaran Kasalametan
Salawasna perhatikeun pancegahan kaamanan di handap ieu pikeun nyegah kejutan listrik, seuneu, atanapi karusakan unit:
- Sumber Daya: Sambungkeun unit ngan ukur kana voltase catu daya anu ditangtukeuntage. Pastikeun kabel listrik teu ruksak atanapi kajepit.
- Ventilasi: Do not block ventilation openings. Ensure adequate airflow around the unit to prevent overheating. Do not install in a confined space.
- Uap: Ulah ngalaan unit ka hujan atawa Uap. Ulah nempatkeun objék ngeusi cairan, kayaning vases, dina unit.
- Objék Asing: Ulah ngasupkeun barang asing kana liang unit.
- Palayanan: Rujuk sadayana jasa ka tanaga jasa anu mumpuni. Entong nyobian ngalayanan produk ieu nyalira.
- Grounding: Pastikeun unitna dihubungkeun ka ground anu leres pikeun nyegah sengatan listrik.
- Overload: Ulah overload dina amplifier. Ensure connected speakers and other equipment match the ampspésifikasi lifier urang.
3. Eusi Paket
Pastikeun yén sadaya item aya dina bungkusan:
- 1 x PLE-1ME120-US Plena Mixer Amppangagung
- 1 x Kabel Listrik
- 1 x Manual Pamaké (dokumén ieu)
- 1 x CD-ROM (Plena Easy Line software/documentation)
4. Fitur sareng Kontrol Produk

Figure 4.1: Front Panel of the Bosch Plena PLE-1ME120-US Mixer Amppangagung
The image above displays the front panel of the Bosch Plena PLE-1ME120-US Mixer Amplifier. Key features visible include the power button, individual volume controls for four microphone inputs (Mic 1-4), a background music (BGM) input volume control, HI and LO tone adjustment knobs, and a master volume control. On the right, there are LED indicators for signal presence and limiter activation, along with a headphone output jack. The top surface features ventilation grilles and the Bosch logo.
Kontrol Panel hareup:
- Tombol DAYA: Toggles ka amphurung sareng pareumna lampu hias.
- Mic 1-4 Volume Knobs: Adjust the input level for each of the four microphone channels.
- BGM Volume Knob: Adjusts the input level for the Background Music source.
- HI Tone Control: Adjusts the high-frequency response of the mixed audio.
- LO Tone Control: Adjusts the low-frequency response of the mixed audio.
- MASTER VOLUME Knob: Ngadalikeun volume kaluaran sakabéh tina amppangagung.
- LIMITER LED: Illuminates when the internal limiter is active, indicating that the output signal is being compressed to prevent distortion.
- LED SIGNAL: Illuminates when an audio signal is present at the output.
- Jack headphone: 3.5mm stereo output for monitoring the mixed audio signal.
5. Setélan
5.1 Panempatan sareng Ventilasi
Tempatna amplifier on a stable, flat surface. Ensure there is at least 10 cm (4 inches) of clear space around all sides of the unit for proper ventilation. Do not place the amptempatkeun di deukeut sumber panas atawa dina sinar panonpoé langsung.
5.2 Connecting Audio Inputs
- Mikropon: Connect your microphones to the appropriate input jacks on the rear panel (not visible in the provided image, but standard for mixer amplifiers). Ensure correct cable types (e.g., XLR or TRS) are used.
- Background Music (BGM): Connect your audio source (e.g., CD player, media player) to the BGM input. Use appropriate RCA or TRS cables.
5.3 Connecting Audio Outputs (Speakers)
Sambungkeun speaker anjeun ka amplifier's output terminals on the rear panel. Ensure the speaker impedance matches the amplifier's output impedance (typically 4 Ohm or 8 Ohm, or 70V/100V line for public address systems). Incorrect impedance can damage the amplifier atanapi spiker.
5.4 Sambungan Daya
Saatos sadaya sambungan audio parantos dilakukeun, sambungkeun kabel daya anu disayogikeun ka amplifier's power inlet and then to a suitable AC power outlet. Ensure the power outlet is grounded.
6. Parentah Operasi
6.1 Powering on / Pareum
- Pikeun ngaktipkeun, pencét tombol POWER button. The power indicator (if present, typically on the front panel) will illuminate.
- Pikeun mareuman, pencét tombol POWER tombol deui.
6.2 Nyaluyukeun Tingkat Input
- Setel sadayana Mic 1-4 jeung BGM volume knobs to their minimum position (fully counter-clockwise) before starting.
- Gradually increase the volume knob for the desired microphone or BGM source while speaking into the microphone or playing music.
- Adjust each input level until the SINYAL LED flickers consistently during normal operation, but the LIMITER LED rarely illuminates.
6.3 Tone Control Adjustment
- Ngagunakeun éta HI control to adjust the treble frequencies. Turn clockwise for more brightness, counter-clockwise for a softer sound.
- Ngagunakeun éta LO control to adjust the bass frequencies. Turn clockwise for more bass, counter-clockwise for less bass.
- Adjust these controls to suit your preference and the acoustics of the room.
6.4 Master Volume Control
Once individual input levels are set, use the large JILID MASTER knob to control the overall output volume of the amplifier. Adjust this to the desired listening level for your audience.
6.5 Pemantauan Headphone
Plug 3.5mm headphones into the headphone jack to monitor the mixed audio signal without affecting the main output. The headphone volume is typically linked to the Master Volume or has its own dedicated control (not explicitly shown but common).
7. Pangropéa
- beberesih: Disconnect the power before cleaning. Use a soft, dry cloth to wipe the exterior of the unit. Do not use liquid cleaners or aerosols.
- Ventilasi: Periodically check that the ventilation openings are clear of dust and debris. Use a soft brush or compressed air to gently clean them.
- Panyimpenan: Lamun nyimpen éta amplifier for an extended period, ensure it is in a cool, dry place, away from direct sunlight and extreme temperatures.
8. Cara ngungkulan
| Masalah | Mungkin Cukang lantaranana | Solusi |
|---|---|---|
| Taya kakuatan | Power cord disconnected; Power outlet faulty; Unit fuse blown. | Check power cord connection; Test power outlet; Consult qualified service personnel for fuse replacement. |
| Taya kaluaran sora | Master volume too low; Input volume too low; Speaker connections faulty; Speakers damaged. | Increase MASTER VOLUME; Increase individual input volumes; Check speaker wiring; Test speakers with another ampliifier lamun mungkin. |
| Sora distort | Input signal too high (clipping); Master volume too high; Speaker impedance mismatch. | Reduce input volume until LIMITER LED rarely illuminates; Reduce MASTER VOLUME; Verify speaker impedance matches amppangagung. |
| Hum atawa noise | Kawat ground; Pelindung kabel goréng; Gangguan listrik di caket dieu. | Ensure proper grounding; Use high-quality shielded cables; Move amppangilon jauh ti alat éléktronik lianna. |
9. Spésifikasi
| Parameter | Nilai |
|---|---|
| Modél | PLE-1ME120-US |
| Kakuatan kaluaran RMS | 120 W |
| Saluran Audio | 4 (Microphone inputs) |
| Tanggapan Frékuénsi Minimum | 60 Hz |
| Réspon Frékuénsi Maksimum | 20 kHz |
| Konsumsi Daya Operasi | 400 W |
| Warna | Arang |
| Ukuran (H x W x D) | 3.9" x 16.9" x 10.6" (kira-kira 9.9 cm x 42.9 cm x 26.9 cm) |
| Beurat (Perkiraan) | 19.62 lb (kira-kira 8.9 kg) |
| Produsén | Bosch |
10. Garansi jeung Rojongan
For warranty information and technical support, please refer to the warranty card included with your product or contact your authorized Bosch (Electro-Voice) dealer or distributor. Do not attempt to repair the unit yourself, as this may void your warranty.
You can also visit the official Electro-Voice website for further support and resources: www.electrovoice.com





