Reckhorn Mini-Sub

Wanted a small subwoofer for my home office. Have had my eyes on the small 6.5 inch Rechorn D-165 for some time. Only 30 Euro, and a really good build quality. There is no official data on the passive units, but from trials with 3 different weight adding, and comparing a measured impedance with simulation in WinISD, I find the parameters for the passives to be something like this: Vas = 70 l Qms = 2,8 Fs =15 Hz (without any added weight) Sd = 150 cm2 This is not exact at all, but I think near enough to do … Continue reading Reckhorn Mini-Sub

Reckhorn Mini-Sub – Preamp

For those interested, here is schematics and gerber files ready for use, for non commercial purposes of course. I have corrected the two small mistakes, so should work perfectly.Can be powered from the AMP PSU you use directly (must be a split supply with a positive and negative and a GND, of course). I lately use JLC for pcb’s: only 2 USD for 5 PCBs!It is dead easy, just upload the zip file and do the order; just drag and drop the zip file. …. pretty smart 😉 Schematics should be straight forward. Input pot needs to be Log and … Continue reading Reckhorn Mini-Sub – Preamp

Reckhorn D-165

Got myself a Reckhorn D-165 and 2 x P-6.5 passive units, intended for a mini subwoofer for my home office. On paper the 6.5 inch D-165 looks really promesing.Link to shop: Reckhorn Amazing build quality for 30 € only?!Fast delivery and nicely packed … good job Reckhorn 😊 The passives are not as impressive and quite flimsy. Seem the suspension is somewhat more soft than the D-165 .. giving a lowe Fs. Comes with 3 small discs to add weight to the 20g alu cone. Plan is to build a small active sub in a box of 11 – 15 … Continue reading Reckhorn D-165