New workshop now open - all systems go!
New workshop now open - all systems go!
DRIVE UNITS BY MANUFACTURER:
SDS-164 P830657
UK STOCK ITEM
The Peerless SDS-P830657 is an 6½ inch 8 ohm midwoofer from the highly regarded SDS series featuring a coated paper cone with inverted dust cap, a fully ventilated cropped steel chassis and a ferrite magnet system. Works very well with a simple LR2 crossover + 6Khz LCR notch filter. Those with sharp eyes may spot this drive unit in some £2K+ mainstream designs.
Also known as the SDS-164.
Resonant frequency (fs) | 44.7 Hz | Nominal impedance (Zn) | 8 Ω |
Mechanical Q factor (Qms) | 2.74 |
DC resistance (Re) | 6.05 Ω |
Electrical Q factor (Qes) | 0.55 |
Max power handling | 60 W |
Total Q factor (Qts) | 0.46 |
Sensitivity (2.83V/1m) |
89.4dB |
Equivalent volume (Vas) | 30.77L | Chassis diameter (cropped) |
182mm |
I have used a lot of these in the past. They are not quite up to the M16NH for smoothness of response, but you can tame the 6k bump by adding a zoble network to the crossover and more importantly putting sound deadening (butyl or bitumen pads as used in the automotive industry) on the frame. It's a bit fiddly, but it seemed to reduce ringing, which may or may not be part of that 6k bump.
The response I measured was closer to the blue curve shown in the response graph.
These work well in a transmission line paired with a D27TG35-06. Don't be put off by the 44hz FS, these dig down very deep when used in the right cabinet. The clean roll off from 100hz means room gain doesn't cause too much bass boom.
Tonally these have a nice warm but detailed sound with a richness to vocals that is pleasing to the ear.
Thankyou for your review Patrick!
Will & Caroline
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Very happy with this replacement part, especially once id fitted it correctly!! Sounds great so know where to go when the other one fails. 👍
Just as expected. Works perfectly as a subwoofer @400Hz in a mono bi-amped active internet radio set up in my study. Thanks!
Bought a pair of these to replace the failing drivers in my 20 year old Alesis M1 Active Mk2s. They are physically a near perfect match for the cabinets and are a good match electrically for the amplifier, but sound better than the original drivers. The only slight complication is the original drivers use one 2.8mm and one 4.8mm spade terminal, so you need to change one of the connectors. These have given my old monitors (now my 'kitchen speakers') a whole new lease of life. Next step is to replace the rubber surrounds with a grille.
There is a detailed review of these drivers over on youtube: https://www.youtube.com/watch?v=NCb-rzCSK2s
Great service from Willys. They were dispatched straight away and arrived next day, very well packed.
I recently installed the Linn Keilidh active Tweeter Upgrade Kits from Willys Hifi. It works great! It took
1 month to get here snd had to pay an additional 90 euros in taxes and customs fees but it was well worth it!
The foam grill covers of my Mission 770s crumbled into dust many years ago. Only recently was I able to find what I thought would be a suitable replacement. Everything about the process went smoothly. The foam cut easily, looks good and, to my ears , is audibly transparent.