Home 4-Way Passive Crossover Design -- 2
Budget: £20 – £250 GBP
If you don’t have experience do not bid. Twice now I’ve had people saying they can do this and no results!
I’m putting together a high-fidelity home audio system and need a properly engineered 4-way passive crossover to split the signal into four bands: 0–85 Hz, 85–300 Hz, 300 Hz–2.2 kHz and 2.2 kHz–40 kHz. The network will feed a subwoofer, dedicated mid-bass driver, midrange driver and tweeter/super-tweeter, all powered by a single stereo amplifier.
Here’s what I’m after:
• A full schematic showing each filter section, impedance-corrected for an 8 Ω load on every band.
• Precise component values and part numbers. I’d like to use iron-core inductors on the low-frequency sections to keep DCR down, air-core inductors for mids and highs, and quality film capacitors throughout.
• A clearly laid-out bill of materials specifying wire gauges, core types, capacitor voltages, and preferred brands that are readily available from suppliers such as Parts-Express, Jantzen or Mundorf.
• Documentation of the predicted response (simulation in XSim, VituixCAD or equivalent) so I can see the summed acoustic target and individual driver slopes before I start winding coils.
• Brief assembly guidelines—physical layout tips to minimise magnetic coupling and keep ESR low.
If you have experience voicing passive networks for audiophile-grade speakers and can deliver the above in a tidy PDF plus editable simulation files, let’s talk.
I’m putting together a high-fidelity home audio system and need a properly engineered 4-way passive crossover to split the signal into four bands: 0–85 Hz, 85–300 Hz, 300 Hz–2.2 kHz and 2.2 kHz–40 kHz. The network will feed a subwoofer, dedicated mid-bass driver, midrange driver and tweeter/super-tweeter, all powered by a single stereo amplifier.
Here’s what I’m after:
• A full schematic showing each filter section, impedance-corrected for an 8 Ω load on every band.
• Precise component values and part numbers. I’d like to use iron-core inductors on the low-frequency sections to keep DCR down, air-core inductors for mids and highs, and quality film capacitors throughout.
• A clearly laid-out bill of materials specifying wire gauges, core types, capacitor voltages, and preferred brands that are readily available from suppliers such as Parts-Express, Jantzen or Mundorf.
• Documentation of the predicted response (simulation in XSim, VituixCAD or equivalent) so I can see the summed acoustic target and individual driver slopes before I start winding coils.
• Brief assembly guidelines—physical layout tips to minimise magnetic coupling and keep ESR low.
If you have experience voicing passive networks for audiophile-grade speakers and can deliver the above in a tidy PDF plus editable simulation files, let’s talk.