1. Pengenalan
Thank you for choosing the Soundstream SPM.804 8-inch Midrange Pro Audio Speaker. This speaker is designed to deliver clear, high-energy sound for both car and professional audio systems. It features a durable construction for reliable performance and enhanced mid-frequency clarity.

Rajah 1: Depan view of the Soundstream SPM.804 speaker.
This manual provides essential information for the proper installation, operation, and maintenance of your SPM.804 speakers. Please read it thoroughly before installation and keep it for future reference.
2. Apa yang ada di dalam Kotak
- Soundstream SPM.804 8-inch Midrange Pro Audio Speaker (Pair)

Figure 2: Product packaging showing the pair of Soundstream SPM.804 speakers.
3. Persediaan dan Pemasangan
3.1 Langkah Keselamatan
- Putuskan sambungan bateri kenderaan sebelum memulakan sebarang kerja elektrik.
- Ensure proper ventilation for the speakers to prevent overheating.
- Gunakan alatan yang sesuai dan pakai cermin mata keselamatan semasa pemasangan.
- Rujuk pemasang profesional jika anda tidak pasti tentang sebarang langkah.
3.2 Pemasangan
The SPM.804 speakers are designed for easy installation into various enclosures or door panels. Ensure the mounting surface is sturdy and free from obstructions.
- Kedalaman Pemasangan: 2.79 inci (70.8 mm)
- Diameter potong: 7.17 inci (182 mm)
- Carefully measure and mark the desired mounting location.
- Cut a circular opening with the specified cut-out diameter.
- Gerudi lubang pandu untuk skru pelekap.
- Place the speaker into the opening, ensuring a snug fit.
- Secure the speaker with appropriate screws, tightening them evenly to prevent distortion of the speaker frame.

Rajah 3: Bersudut view of the speaker, illustrating its profile untuk pemasangan.
3.3 Pendawaian
The SPM.804 speakers have a 4 Ohm impedance. Ensure your amplifier is stable at this impedance and can provide sufficient power.
- Identify the positive (+) and negative (-) terminals on the speaker and your amplifier. The speaker terminals are typically marked.
- Connect the positive (+) terminal of the speaker to the positive (+) output of your amplifier using high-quality speaker wire.
- Connect the negative (-) terminal of the speaker to the negative (-) output of your amplebih hidup.
- Pastikan semua sambungan selamat dan bebas daripada litar pintas.

Rajah 4: Belakang view of the speaker, highlighting the wiring terminals.
4. Arahan Operasi
4.1 Pengendalian Kuasa
The SPM.804 speakers are rated for 250W RMS and 500W Max power. It is crucial to match your amplifier's output to these specifications to prevent damage.
- Avoid overdriving the speakers with excessive power, which can lead to distortion and damage.
- Tetapkan anda amplifier's gain settings correctly to prevent clipping.
4.2 Tempoh Pecah Masuk
Allow a break-in period of approximately 10-20 hours of normal listening before operating the speakers at high volumes. This allows the speaker's suspension components to loosen and perform optimally.
4.3 Tetapan Crossover
For optimal performance and speaker longevity, it is recommended to use a high-pass filter (HPF) with your midrange speakers. A typical starting point for the crossover frequency is around 100-150 Hz, with a slope of 12dB/octave or 24dB/octave. Adjust this setting based on your system's overall frequency response and your listening preferences.
5. Penyelenggaraan
Your Soundstream SPM.804 speakers require minimal maintenance to ensure long-lasting performance.
- Keep the speakers free from dust and debris. Use a soft, dry cloth to gently wipe the cone and surround.
- Elakkan daripada mendedahkan pembesar suara kepada suhu atau kelembapan yang melampau.
- Do not apply any liquids or cleaning agents directly to the speaker cone or surround.
- Regularly check wiring connections for tightness and corrosion.
6. Penyelesaian masalah
If you experience issues with your SPM.804 speakers, refer to the following common problems and solutions:
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Tiada bunyi dari pembesar suara | Pendawaian longgar atau salah; Amplifier off or in protect mode; Blown fuse | Periksa semua sambungan pendawaian; Sahkan amplifier status; Inspect and replace fuses if necessary |
| Bunyi herot | Amplifier gain too high (clipping); Incorrect crossover settings; Damaged speaker | Kurangkan amplifier gain; Adjust crossover frequencies; Inspect speaker for physical damage |
| Weak or muffled sound | Incorrect polarity (speaker wired out of phase); Low power from amplebih hidup | Verify speaker wire polarity (+ to + and - to -); Ensure amplifier is providing adequate power |
| Pembesar suara terputus seketika | Sambungan longgar; Terlalu panas amplifier; Short circuit in wiring | Check all wiring; Ensure proper ventilation for amplifier; Inspect wiring for shorts |
If the problem persists after attempting these solutions, please contact Soundstream customer support or a qualified audio technician.
7. Spesifikasi
Detailed technical specifications for the Soundstream SPM.804 speaker:
| Ciri | Spesifikasi |
|---|---|
| Nombor Model | SPM.804 |
| Jenis Pembesar Suara | Midrange Pro Audio Speaker |
| Saiz Pembesar Suara | 8 Inci |
| Impedans | 4 Ohm |
| Kuasa RMS | 250 Watt |
| Kuasa Maks | 500 Watt |
| Sensitiviti | 95.5 dB |
| Respons Kekerapan | 100 Hz - 5 kHz (typical for midrange) |
| Gegelung Suara | High-temp EISV |
| Bahan Magnet | Ferrite (44 oz) |
| Bahan Kon | Kertas Hitam |
| Bahan keliling | kain |
| Bahan Bakul | Black-coated Steel |
| Kedalaman Pemasangan | 2.79 inci (70.8 mm) |
| Diameter Potongan | 7.17 inci (182 mm) |
| Dimensi Item (D x W x H) | 3.3"D x 8"W x 8"H |
| Kiraan Unit | 2.0 Kiraan (Pasangan) |
| Teknologi Ketersambungan | berwayar |
| warna | Hitam |
| UPC | 709483071797 |
8. Maklumat Waranti
Soundstream provides a Waranti Terhad Pengilang 1 Tahun for the SPM.804 speakers. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
The warranty does not cover damage caused by improper installation, abuse, accident, neglect, unauthorized repair, or modification. For full warranty terms and conditions, please refer to the official Soundstream webtapak atau hubungi sokongan pelanggan.
9. Sokongan Pelanggan
For technical assistance, warranty inquiries, or additional product information, please visit the official Soundstream webtapak atau hubungi bahagian perkhidmatan pelanggan mereka.
- Soundstream Official Webtapak: www.soundstream.com
- Rujuk kepada webtapak untuk maklumat hubungan, Soalan Lazim dan sumber tambahan.