UK postal deliveries have delays & no tracking updates in some regions.
UK postal deliveries have delays & no tracking updates in some regions.
DRIVE UNITS BY MANUFACTURER:
SPH-135C
DISCONTINUED BY MANUFACTURER - SOLD OUT.
The SPH-135C is a versatile drive unit from the Monacor 135 series featuring a woven carbon fibre cone, vented pole piece and diecast chassis. When mounted in correctly aligned cabinets this long throw unit is capable of reproducing bass that is surprisingly deep and accurate - ported cabinets of around 14 litres can give an in room response extending down into the upper 30s (Hz) which is excellent for a driver of this size.
A fine replacement unit for a wealth of mainstream designs requiring a high quality 5¼ bass driver such as Rogers, Castle, Mission etc. Full details and dimensions can be found on the downloadable datasheet.
| Resonant frequency (fs) | 40 Hz | Nominal impedance (Zn) | 8 Ω |
| Mechanical Q factor (Qms) | 4.48 | DC resistance (Re) | 6 Ω |
| Electrical Q factor (Qes) | 0.43 | RMS power handling | 50W |
| Total Q factor (Qts) | 0.39 | Sensitivity (2.83V/1m) | 88 dB |
| Equivalent volume (Vas) | 17L | Chassis diameter (pincushion profile) | 133 mm |
SPH135C, SPH 135 C
Thanks for the review Graham !
Will & Caroline
Great update to the original Castle drivers which started to crack anround the edges after many years of service.
More bass response and energy when playing rock tracks.
Would note that driver surround is slightly larger than original.
Thanks for the review Ian!
Will & Caroline
Ordered two of these to replace the original Castle IsIs units as over a period of 35 years the polypropylene cones had gone brittle due to UV degradation, a common occurrence, units arrived in quick time and came securely packed, they took 20 minutes to solder in and slipped straight in, they sound better than the original units as they develop quite a bit more bass something the originals were very light on, very good build quality, and most importantly, a very good sound quality I’ve just acquired a a pair of Castle Avons for £60 that need the same upgrade, I will certainly buy these again from Willys very competitively priced with a quick efficient service 10/10
Thanks very much Willys HIFI
Thankyou for your review !
Will & Caroline
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
Quick dispatch
Id had these speakers for a couple of years. I got the S/H and already the tweeters weren't working when purchased. Played them for and while but parked them up hoping one day to organise tweeters. Well that day finally came and i am blown away. Easily better than my Jamo 507A's and TDL RTL 3's. I drive them with an adcom 5300 and nad as pre amp. I am in New Zealand. The turn around time was within 2 weeks. Saving up for the crossover upgrade.
This made a massive difference to my 30 year old Linn Keilidh speakers, giving them a new lease of life.
Willy's is an awesome serivce. I needed a 4" midrange replacement that is a drop in exact fit for the IMF TLS50. If you are ordering from the USA, the Monacor MSH-115, 4" is your best option. I live in Pennsylvania and it only took 5 days from the time I ordered to be delivered from the UK. Royal Mail provides tracking. I dropped in cab and was fired up shortly on the same day. Sounds great. Totally worth buying these instead of rebuilding old speakers.
Willys saved my Mission 752 speakers. The tweeters were defective. The original tweeters are no longer available, and it would have been a shame to throw away these really good speakers. I came across Willys by chance in a chat room. Even there, the company and especially the tweeters were highly praised. I contacted Willys and received a very friendly response. Ordering the speakers went smoothly. However, shipping to and from the UK is a real adventure due to ****. It is expensive, cumbersome and no fun for either side. The tweeters arrived two weeks later and were of course installed immediately. The result is truly impressive. Airy, clear highs (previously a weakness of the 752, which tended to ‘hiss’) and a sound image that really thrills me. The ‘old’ Mission 752s seem to me as if they have been swimming in a fountain of youth. Thank you for the good service and the high-quality tweeters. ❣️❣️❣️
Translated with DeepL.com (free version)
What a business, such a personal service , superb communication , and speed of delivery.
Bought a matched pair of Hiquphon OW1-92 Tweeters for my ancient Linn Kan’s Mk11.
WOW back to life , if not better , the main difference I hear , is more life, output, depth from the tweeter without taking away what I love about the Kans.
Will order a second set very soon for my other pair.
Thanks Will , and Happy Birthday.
Anthony
Loved the extra touch , gaskets, solder and screws.
