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Everything In Music Since 1958
Everything In Music Since 1958

API 215L Discrete Hi-Pass / Lo-Pass Sweep Filter

Sold out
Original price $695.00
Original price $695.00 - Original price $695.00
Original price $695.00
Current price $660.25
$660.25 - $660.25
Current price $660.25
About Inventory Status


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In stock: It is in stock and available to ship or pickup. Apparel must be shipped from another location and is not available for in-store pickup. We can usually ship or have these items available for pickup by the next business day if they don't require inspection, special handling, or setup. Our pickup location is 11151 Veirs Mill Rd. Silver Spring, MD 20902.

📆 Preorder: It is on the way to our warehouse. We can't predict when preorder items will arrive due to current supply chain issues. If you place an order for one of these items someone will contact you to estimate the delivery date.

Out of stock: We don't currently have it available but you're not out of luck yet. We still may be able to get it. If you order one of these items we will contact you with an estimated fulfillment date. You have the option to cancel the order if you change your mind.

Special order: The item is so special that it needs to be custom ordered for you. Some of these items are works of art and have to be made individually. Orders for special order items must be prepaid and we cannot accept cancellations or refunds.

█ Sold out: We don't think we can get this item because it was either discontinued by the manufacturer or was limited in quantity. If you want or need this item call or text us. Sometimes we can help you track down the item through other sources or help you find something similar.

About Item Conditions


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Call or text us at 301-946-8808.

New: The item is brand new as received from the manufacturer with a full manufacturer warranty. Instruments such as guitars, snare drums, drum kits, brass and woodwind instruments may be opened for photography and quality control inspection and may not be in a factory sealed box.

Mint or Open Box: The item may have been opened and tested but has been repackaged. The original packaging may have superficial issues but the item itself and any originally included accessories are in perfect, like new condition.

Display Model: These items are so cool that we put them on display in our legendary shop. The condition is brand new as received from the manufacturer with manufacturer warranty. Rest assured, these items undergo a very careful inspection before shipping.

Demo: These items have been on our sales floor for demo purposes and will likely show signs of use. The original packaging may no longer be included, but you can be assured that you are receiving an awesome item and an awesome price.

Used: The item is used. These item may have varying degrees of wear. Please read the description for information about the condition of the item. Used items do not carry a warranty.

B or C Stock: Factory refurbished. These items were purchased from the manufacturer in a refurbished condition. They will show some cosmetic issues, but nothing that would impact performance. Being that these are sealed from the manufacturer, we generally do not open these to photograph the cosmetic issues. They are guaranteed to work and may have a limited warranty or you may purchase an extended warranty in some cases. Please see the listing description for item specific information.

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The API 215L Sweep Filter Is a Unique and Flexible Force for All Sound Management Applications

The API 215L is a unique passive, sweepable filter, designed specifically to contour the sound to preserve the natural tone of the signal. Its extreme flexibility, repeatable settings and superb sound make it ideal for all studio, live sound and broadcast applications.


  • Wide range 6 dB per octave LOPASS control
  • Wide range 12 dB per octave HIPASS control
  • Balanced input stage
  • Passive filter design for smooth tone
  • Unity gain throughout
  • Hard Wire BYPASS switch
  • Transformer Coupled Output to +28 dBu
  • All Discrete Design


Finding Flexibility In Subtlety

The 215L design is a passive low pass filter with a slope of only 6 dB per octave, and a passive dual high pass filter with a slope of 12 dB per octave. The filters are isolated from each other with the same discrete transistor buffer used in the famous 550 series equalizers. This minimizes interaction between the filters, as well as providing a low impedance source for the filter following the buffer.

The filters are both continuously adjustable, with a range from 20 Hz to 20 kHz in two bands. The low pass filter has a range from 500 Hz to 20 kHz, and the high pass filter has a range from 20 Hz to 600 Hz. This covers a broad range of frequencies throughout the entire audio spectrum. Because of the subtle nature of the 215L filter, it finds a home with uses like rolling off the low end of a hi-hat, where a natural sound is desired, not the usual "phase-shifter" sound of a 18 to 24 dB per octave filter found on most consoles. It can also be used to thin out room mics, without the complete loss of low end which again usually results from steep filter circuits.

The input section is a balanced circuit using the API 2510 all discrete op-amp, minimizing the loading effect on any device plugged into it. The output stage is a transformer balanced output, driven by the all discrete API 2520 op-amp.

The 215L can be used in the Legacy, Legacy Plus or Vision Series Consoles, or in the L200 Rack. The 215L Filter makes use of the 2520 and 2510 op-amps and therefore exhibits the reliability, long life and uniformity which are characteristic of API products.


SPECIFICATIONS

  • Number of Bands: Two
  • Filter Type: Passive Sweepable Shelf
  • Filter Frequency Centers
    • Low Pass: 500 to 20 kHz
    • High Pass: 20 to 600 Hz
  • Input Impedance: greater than 20 K Ohms, Balanced
  • Output Impedance: 85 Ohms, Transformer coupled, Balanced
  • Nominal Levels: -15 dBu to +15 dBu
  • Clipping Level: +28 dBu
  • Frequency Response: 0, -.3, 30 to 20 kHz
  • Noise: 98 dB below +10 dBm output, unweighted. 20 - 20 kHz
  • THD: .02% (+4 dB @ 2 K)
  • Connectors: .100 spaced ELCO
  • Power Consumption: ±16 Volts DC, 60mA max at +24 dBu out
  • Size (W x H x D): 1.25 x 2.65 x 6.75 inches / 32 x 67 x 171 mm
  • Shipping Size (W x H x D): 4.5 x 6.25 x 10 inches / 114 x 159 x 254 mm
  • Actual Weight: 0.51 lb / 231 g
  • Shipping Weight: 0.88 lb / 399 g

Manufacturer: Automated Processes Inc
Model: 215L
SKU: I384068-N-0-WHXC


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