Uživatelská příručka dbx 215s Dual Channel 15-pásmový ekvalizér

1. Úvod

Thank you for choosing the dbx 215s Dual Channel 15-Band Equalizer. This professional audio device is designed to provide precise frequency control for various sound reinforcement and recording applications. With its dual 15-band, 2/3-octave constant Q frequency bands, the 215s offers exceptional sound shaping capabilities and rugged reliability, making it an industry standard for touring, studios, and audio installations.

This manual provides essential information for the proper setup, operation, and maintenance of your dbx 215s equalizer. Please read it thoroughly before using the unit to ensure optimal performance and safety.

2. Důležité bezpečnostní informace

To reduce the risk of electric shock, do not remove the cover. No user-serviceable parts inside. Refer servicing to qualified service personnel. Always observe the following safety precautions:

• Zdroj napájení: Připojte jednotku pouze k uvedenému zdroji napájení.tage as marked on the rear panel.
• Základy: Ujistěte se, že je jednotka řádně uzemněna, abyste zabránili úrazu elektrickým proudem.
• Větrání: Neblokujte větrací otvory. Zajistěte dostatečné proudění vzduchu kolem jednotky, abyste zabránili přehřátí.
• vlhkost: Nevystavujte jednotku dešti ani vlhkosti. Nepokládejte na jednotku předměty naplněné tekutinami.
• Cizí předměty: Nevkládejte žádné předměty do otvorů jednotky.
• Servis: Nepokoušejte se opravovat tento přístroj sami. Veškerý servis svěřte kvalifikovanému servisnímu personálu.
• Výměna pojistky: Pojistky vyměňujte pouze za pojistky stejného typu a jmenovité hodnoty, jaké jsou uvedeny na zadním panelu jednotky.

The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" uvnitř krytu produktu, který může být dostatečně velký, aby představoval riziko úrazu elektrickým proudem pro osoby.

Vykřičník v rovnostranném trojúhelníku má upozornit uživatele na přítomnost důležitých provozních a údržbových (servisních) pokynů v literatuře přiložené ke spotřebiči.

3. Konec produktuview

The dbx 215s is a dual-channel, 15-band graphic equalizer designed for professional audio applications. It features intuitive controls and robust construction for reliable performance.

3.1 Klíčové vlastnosti

• Dual 15-band, 1/3-octave constant Q frequency bands.
• Switchable boost/cut ranges of ±6 dB or ±12 dB.
• Front panel bypass switch for quick A/B comparison.
• ±12 dB input gain range for level matching.
• 4-Segment LED ladders for monitoring output levels.
• Inputs: ¼” TRS and female XLR (pin 2 Hot).
• Outputs: ¼” TRS and male XLR (pin 2 Hot).

3.2 Ovládací prvky na předním panelu

Figure 3.2.1: Front Panel of the dbx 215s Equalizer.

The front panel features two identical channels of equalization controls. Each channel includes:

• Ovládání vstupního zisku: A rotary knob to adjust the input level.
• Přepínač rozsahu: Toggles between ±6 dB and ±12 dB boost/cut range for the frequency sliders.
• Přemostění: Engages or bypasses the equalizer processing for that channel.
• Frequency Sliders: 15 individual sliders for adjusting specific frequency bands (e.g., 20Hz, 40Hz, 63Hz, ..., 16kHz).
• Output Level Meter: A 4-segment LED ladder display indicating the output signal level.

3.3 Připojení zadního panelu

Figure 3.3.1: Rear Panel of the dbx 215s Equalizer.

The rear panel provides all necessary audio input and output connections, along with the power inlet:

• Vstup střídavého napájení: Standard IEC power connector for connecting the power cord.
• Channel 1 & 2 Inputs: Both XLR (female) and ¼” TRS balanced input jacks are provided for each channel.
• Channel 1 & 2 Outputs: Both XLR (male) and ¼” TRS balanced output jacks are provided for each channel.
• Držák pojistky: Obsahuje hlavní pojistku.

4. Nastavení a instalace

4.1 Vybalení

Carefully remove the dbx 215s from its packaging. Retain the original packaging materials for future transport or storage. Inspect the unit for any signs of damage that may have occurred during shipping. If damage is found, contact your dealer immediately.

4.2 Montáž do racku

The dbx 215s is designed for standard 19-inch rack mounting. It occupies 1U (one rack unit) of space. Ensure adequate ventilation space around the unit, especially if mounting other heat-generating equipment nearby.

• Align the mounting holes on the equalizer with the holes on your equipment rack.
• Secure the unit using appropriate rack screws (not included).

4.3 Audio připojení

The 215s offers both XLR and ¼” TRS balanced connections. For optimal performance and noise rejection, balanced connections are recommended.

• Vstupní připojení: Connect the output of your mixer, preamplifier, or other audio source to the INPUT of Channel 1 and/or Channel 2 on the dbx 215s using XLR or ¼” TRS cables.
• Výstupní připojení: Connect the OUTPUT of Channel 1 and/or Channel 2 on the dbx 215s to the input of your amplifier, powered speakers, or next device in the signal chain using XLR or ¼” TRS cables.
• Ensure all connections are secure and correctly wired (Pin 2 Hot for XLR).

4.4 Připojení napájení

• Before connecting power, ensure all audio connections are made and the unit's power switch (if present, though typically on the front for dbx EQs, this model has no explicit power switch on front, it's always on when plugged in) is in the OFF position or that the unit is not yet plugged into the AC outlet.
• Connect the supplied AC power cord to the IEC inlet on the rear panel of the dbx 215s.
• Plug the other end of the power cord into a suitable AC power outlet. The unit operates on 100-240V~, 50/60Hz.

5. Provoz

5.1 Zapnutí/vypnutí

The dbx 215s does not feature a dedicated power switch on the front panel. The unit powers on automatically when connected to an active AC power source. To power off, disconnect the AC power cord from the wall outlet or the unit's rear panel.

5.2 Basic Equalization

The 215s allows you to adjust the frequency response of your audio signal. Each of the 15 sliders corresponds to a specific frequency band. Moving a slider up boosts that frequency, while moving it down cuts that frequency.

• Vstupní zisk: Use the Input Gain knob to set the overall input level. Aim for the green LEDs on the output meter to light consistently, with occasional yellow flashes, avoiding red clipping indicators.
• Range Switch (±6 dB / ±12 dB): Select the desired boost/cut range. The ±6 dB setting provides finer control, while ±12 dB offers a wider range of adjustment.
• Přemostění: Press this button to bypass the equalizer's processing. This allows for quick A/B comparisons between the processed and unprocessed signal. The LED above the switch indicates its status (typically lit when active, off when bypassed).
• Frequency Sliders: Adjust individual frequency bands to shape your sound.
  • Low Frequencies (20Hz - 160Hz): Affect bass and sub-bass. Boosting can add warmth or punch; cutting can reduce muddiness.
  • Mid Frequencies (250Hz - 4kHz): Crucial for vocals and instruments. Adjusting these can affect clarity, presence, or harshness.
  • High Frequencies (6.3kHz - 16kHz): Control treble and air. Boosting can add sparkle; cutting can reduce hiss or harshness.
• Output Level Meter: Monitor the output signal level. Ensure the signal is strong enough without clipping (red LED).

When equalizing, it is generally recommended to make cuts rather than boosts to avoid introducing noise or distortion. However, the 215s is designed for high fidelity, allowing for effective boosts when necessary.

6. Údržba

6.1 Čištění

To clean the unit, use a soft, dry cloth. Do not use abrasive cleaners, waxes, or solvents. Ensure the unit is powered off and disconnected from the AC outlet before cleaning.

6.2 Výměna pojistky

If the unit fails to power on, the fuse may need replacement. The fuse holder is located on the rear panel near the AC power inlet.

• Odpojte napájecí kabel ze síťové zásuvky.
• Locate the fuse holder on the rear panel.
• Carefully pry open or twist the fuse holder cap (depending on type).
• Remove the old fuse and replace it with a new fuse of the exact same type and rating as specified on the unit's rear panel (e.g., T500mAL 250V). Using an incorrect fuse can damage the unit or pose a fire hazard.
• Securely close the fuse holder.
• Znovu připojte napájecí kabel.

If the fuse blows repeatedly, there may be an internal fault. Contact qualified service personnel.

7. Řešení problémů

This section addresses common issues you might encounter with your dbx 215s equalizer. If you experience a problem not listed here, or if the suggested solutions do not resolve the issue, please contact dbx customer support.

8. Specifikace

9. Záruka a podpora

dbx products are manufactured to high quality standards. Your dbx 215s equalizer comes with a standard manufacturer's warranty. Please refer to the official dbx webKonkrétní záruční podmínky naleznete na webových stránkách nebo v dokumentaci k nákupu.

Obrázek 9.1.1: Přample of a warranty badge, indicating potential extended warranty options.

Some retailers may offer an extended 1-year warranty. Please check with your point of purchase for details regarding any extended warranty programs.

9.1 Zákaznická podpora

For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact dbx customer support. You can typically find contact information on the official dbx website or through your product's registration materials.

A comprehensive User Guide (PDF) is also available for download from the dbx webwebu nebo prostřednictvím následujícího odkazu: dbx 215s User Guide PDF.