This document is a service manual for Pioneer speaker systems, specifically models CS-907, CS-707, and CS-607. It provides detailed information for servicing, including exploded views, parts lists, circuit diagrams, and specifications.
Function Description
The Pioneer CS-907, CS-707, and CS-607 are book-shelf style, bass-reflex type speaker systems. They are designed to reproduce audio across a wide frequency range, utilizing multiple drivers to cover different parts of the audio spectrum.
- CS-907/E, G: This is a 4-way, 7-speaker system. It includes a 40 cm (16 in) cone type woofer, a 16 cm (6-5/16 in) cone type mid-range speaker, a horn type tweeter, and a 1-10/16 in piezoelectric cone type super tweeter (x4).
- CS-707/E, G, US: This is a 4-way, 5-speaker system. It features a 30 cm (12 in) cone type woofer, a 12 cm (4-3/4 in) cone type mid-range speaker, a horn type tweeter, and a 1-10/16 in piezoelectric cone type super tweeter (x2).
- CS-607/E, G, US: This is a 4-way, 5-speaker system. It includes a 40 cm (16 in) cone type woofer, a 12 cm (4-3/4 in) cone type mid-range speaker, a horn type tweeter, and a 1-10/16 in piezoelectric cone type super tweeter (x2).
All models incorporate a Power Indicator with LED illumination and a Tone Selector switch.
Important Technical Specifications
CS-907/E, G:
- Enclosure: Book-shelf style, Bass-reflex type
- System: 4-way, 7-speaker system
- Speakers:
- Woofer: 40 cm (16 in) cone type × 1
- Mid-range: 16 cm (6-5/16 in) cone type × 1
- Tweeter: Horn type × 1
- Super Tweeter: 1-10/16 in piezoelectric cone type × 4
- Accessory: Power Indicator LED × 1, Tone selector × 1
- Impedance: NORMAL—8 ohms, SOFT—8 ohms
- Frequency Range: 30 Hz to 26,000 Hz
- Sensitivity: 99 dB/W (at 1 meter distance)
- Maximum Power: 400 W
- Rated Power: 150 W
- Crossover Frequency: 2,000 Hz, 4,000 Hz, 11,000 Hz
- Weight: 21 kg/46.3 lbs
- External Dimensions: 450(W) × 725(H) × 289(D) mm (17-11/16 (W) × 28-9/16 (H) × 10-9/16 (D) in)
- Accessory Parts: Operating Guide × 1, Speaker Cord × 1
CS-707/E, G, US:
- Enclosure: Book-shelf style, Bass-reflex type
- System: 4-way, 5-speaker system
- Speakers:
- Woofer: 30 cm (12 in) cone type × 1
- Mid-range: 12 cm (4-3/4 in) cone type × 1
- Tweeter: Horn type × 1
- Super Tweeter: 1-10/16 in piezoelectric cone type × 2
- Accessory: Power Indicator LED × 1, Tone selector × 1
- Impedance: 8 ohms
- Frequency Range: 35 Hz to 25,000 Hz
- Sensitivity: 96 dB/W (at 1 meter distance)
- Maximum Power: 210 W
- Rated Power: 70 W
- Crossover Frequency: 2,000 Hz, 5,000 Hz, 11,000 Hz
- Weight: 19.0 kg/41.9 lbs
- External Dimensions: 410(W) × 680(H) × 286(D) mm (16-1/8 (W) × 26-7/16 (H) × 11-1/4 (D) in)
- Accessory Parts: Operating Guide × 1, Speaker Cord × 1
CS-607/E, G, US:
- Enclosure: Book-shelf style, Bass-reflex type
- System: 4-way, 5-speaker system
- Speakers:
- Woofer: 40 cm (16 in) cone type × 1
- Mid-range: 12 cm (4-3/4 in) cone type × 1
- Tweeter: Horn type × 1
- Super Tweeter: 1-10/16 in piezoelectric cone type × 2
- Accessory: Power Indicator LED × 1, Tone selector × 1
- Impedance: NORMAL—8 ohms, SOFT—8 ohms
- Frequency Range: 30 Hz to 25,000 Hz
- Sensitivity: 98 dB/W (at 1 meter distance)
- Maximum Power: 300 W
- Rated Power: 100 W
- Crossover Frequency: 1,500 Hz, 4,000 Hz, 11,000 Hz
- External Dimensions: 450(W) × 725(H) × 269(D) mm (17-11/16 (W) × 28-9/16 (H) × 10-9/16 (D) in)
- Accessory Parts: Operating Guide × 1, Speaker Cord × 1
Usage Features
The speaker systems are designed for home audio use, typically placed on shelves or stands.
- Power Indicator: An LED indicator illuminates to show the operational status of the speaker. The illumination voltage varies depending on the LED number, ranging from 1V to 18V.
- Tone Selector: A switch allows users to adjust the tonal characteristics of the speaker output, offering options like "NORMAL" and "SOFT" (for CS-907/E, G and CS-607/E, G, US) or a single impedance (for CS-707/E, G, US).
- Connectivity: The speakers connect to an amplifier via speaker cords. The network assembly manages the signal distribution to the different speaker drivers.
Maintenance Features
The service manual provides comprehensive instructions for maintenance and repair.
- Removal of Grille: To access the speaker components, the grille must be removed. This involves removing the two screws at the bottom of the grille, pulling it out, and then removing the two screws at the top.
- Removal of Woofer: The woofer can be removed by undoing the 8 screws (Phillips screwdriver needed) and 8 bolts (socket wrench needed) that secure it.
- Network Assembly Access: The network assembly can be taken out after removing the woofer.
- Indicator Assembly Access: To remove the indicator assembly, a small screwdriver or punch-like instrument is used to remove the panel. Then, the 3 screws and take off the indicator assembly. After repairing it, attach it to a new panel.
- Exploded Views and Parts Lists: Detailed exploded views for each model (CS-907/E,G, CS-707/E,US, CS-607/E,G,US) are provided, showing all components and their part numbers. This is crucial for identifying and ordering replacement parts.
- Circuit Diagrams: Circuit diagrams for the Network Assembly and Power Indicator Assembly are included, aiding in troubleshooting and repair of electrical components.
- Parts Stock Control: The manual notes that parts marked with "●" are not always kept in stock, and parts marked with "◎" are not always kept in stock. Their delivery time may be longer than usual or they may be unavailable. Parts marked with "★" are critical for safety, and identical designation parts should be used for replacement. Parts marked with "★★" are fast-moving items.
- Part Classification: Some parts are classified by distributor based on model number, temperature, humidity, etc.
The manual emphasizes that specifications and design are subject to possible modification without notice, due to improvements.
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