3-Band Equalizer DIY Kit
backorder, Ships late August
This DIY kit contains all electronics and enclosure materials to assemble a 3-Band Equalizer. The printed circuit board is partially assembled. Simply solder the included capacitors, potentiometers, and jacks to complete the circuit, then install in the included enclosure.
* JULY 27: The EQ Kit is currently on backorder due to unavailability of enclosure front/rear plates. If you prefer, we can ship the kit without the plates immedaitely. Please describe your special request in the Shipping Notes field or email us as needed. *
This fun project has been on the shelf at JDS Labs for more than a year, postponed by long lead times of its high quality film capacitors and rare potentiometers. While you can probably find a software equalizer for your favorite music app, this hardware EQ is fully analog in nature, so it works with every app and avoids digital re-sampling. Kit pricing makes the EQ most affordable.
The JDS Labs 3-Band EQ has a wide adjustment range of about ±15dB for bass, mids, and treble. While the point of an EQ is to color your listening experience, the JDS Labs 3-Band EQ achieves low THD+N with its knobs in their neutral positions.
A muting relay eliminates turn on/off transients, and when the EQ is switched off, the original audio signal passes directly to the RCA output jacks.
3 Band EQ - DIY Assembly Guide
3 Band EQ - Frequency Response Curves
- THD+N, 20-20kHz 0.0022%
- Noise (A-Weighted) -104 dBV
- IMD SMPTE 0.0009%
- IMD CCIF 0.001%
- Input Sensitivity >2VRMS
- Crosstalk (1kHz) -69 dB
- Bass Control ±16.5 dB
- Mids Control ±14.9 dB
- Treble Control ±15.2 dB
- Case Dimensions (mm) 108.50 x 80.00 x 29.50
- Case Dimensions (in) 4.27 x 3.15 x 1.16
- Weight 12 oz
- Input RCA
- Output RCA
- Power 15VAC
- 3-Band EQ PCB v1.01 (QTY 1)
- Aluminum Knobs (QTY 3)
- Aluminum Enclosure Body (QTY 1)
- Aluminum Front Plate for EQ (QTY 1)
- Aluminum Rear Plate for EQ (QTY 1)
- C1, C5 - BFC237510911, 910pF Film Cap (QTY 2)
- C3, C6 - FKS2D014701A00KC00, 4700pF Film Cap (QTY 2)
- C4, C7 - FKP2D006801D00JSSD, 680pF Film Cap (QTY 2)
- J1 - PJ-002AH (QTY 1)
- *J4, J5 - PJRAN2X1U01AUX (QTY 2)
- *RL1 - EC2-12NU (QTY 1)
- *S2 - 100DP1T2B4M7QE (QTY 1)
- VR1, VR2, VR3 - RK09L122002M (QTY 3)
- *We may ship alternative, equivalent part numbers as inventory changes.