Question MJ Acoustics Reference 100 - repairable ?

Vogon

Active Member
Hi Guys, after something like 9 years plus of years sterling service, I think I damaged my Sub :(
I forgot to power down at the mains after watching a film, and 2 days later it started making a humming with a regular click noise, it still works but at a much lower volume (it seems).
Does anyone have an idea what could be the cause and if its fixable ?
It doesn't owe me anything after all this time, and its my mistake but I wouldn't be able to afford to replace it with anything like as good a sub.
TBH it would be a stretch financially to get even a £150 one, but so much low down is now missing that my little Wharfdales can't deliver, I am hoping There might be a way to repair.
 

Gasp3621

Distinguished Member
You shouldn`t need to power off subwoofer daily. I have always kept my sub on for very long periods and never single problem with the amp. Anyway +9years is great for the amp, most of people are not that lucky.

You can ask about the repair cost here; [email protected]

If it`s too expensive to repair, then you would be looking around ~200£ for a similar/slightly better performing sub which will have quite identical look/size too. I know it`s over your budget, but you just got to save for it if it comes to that!
Gemini
 

turbotwo

Standard Member
Just had my reference 1 repaired at MJ Acoustics ..in my case it has cost around 100 quid.

I would recommend giving them a ring..very friendly, helpful and professional indeed..my was turned on continuously for nearly 14 years:)
 

Vogon

Active Member
Thanks guys, I'll give them a ring.
 

turbotwo

Standard Member
Great..just got off the phone with them arranging to collect my sub..you posted as i was speaking to John there..a perfect demonstration of quantum entanglement!
 

Vogon

Active Member
Hmm ... good news I think ...
Spoke to them and they seem a very helpful. They said they can't replace the amp as its no longer in production but could replace most components. (Apparently production on the MK1 stopped in 2002 so mine must be at least 15 years old). o_O
It is a £75 + vat inspection fee though :(
If its uneconomic to repair they will give £300 trade in towards a new MK3 and wave the inspection fee, but the MK3 is £865 !
On that premise, I decided that it was worth me looking to see if any of the components were obviously damaged.
I disconnected the power plug and went to do the same with the RCA, it was at this point I noticed the RCA was a sloppy fit. So I tightened that (handly little tabs on the cable I was using) and plugged it back in.
No clicking noise ... A very faint hum when powered with no input, but I am fairly sure thats always been the case.
A quick intro from GOTG2 and a bit of music, all seems well again, fingers crossed it stays OK otherwise It will be replaced with something like a Wharfdale SPC10 or the above mentioned Gemini.
 

turbotwo

Standard Member
Glad it`s working again..wish i could have fixed mine like that!..i think i was lucky in my repair it turned out to be just one component that had dried up apparently,kept below 100 quid for inspection and repair.

Good luck with yours..i hope it keeps going:)
 

Vogon

Active Member
Well, it seems it is toast :(
Tried every few days and it turned on fine with no noise, today turned it on in anticipation of watching a film and the noise is back.
I did remove the amp panel and visually check, there is nothing obvious blown or damaged.
So at the risk of spending £90 to get it checked over, only to find its unrepairable and not be in a position to afford M.J.A's mk3, I think I need to find a replacement for circa £200 :(
 

Gasp3621

Distinguished Member
Well, it seems it is toast :(
Tried every few days and it turned on fine with no noise, today turned it on in anticipation of watching a film and the noise is back.
I did remove the amp panel and visually check, there is nothing obvious blown or damaged.
So at the risk of spending £90 to get it checked over, only to find its unrepairable and not be in a position to afford M.J.A's mk3, I think I need to find a replacement for circa £200 :(
You get little upgrade aswell with the Gemini2 (8" -> 10" driver and slightly more powerfull amp).
BK Gemini II Subwoofer in Black | eBay

209,46£ delivered in UK. I don`t see anything better available if you want to keep the footprint small and budget low plus something better than from your local hifistore.
 

Vogon

Active Member
Yes, I was weighing up the Gemini or the Wharfdale SPC-10.
Although the Whafedale scores a bit better in the what hifi review, its hard to find other reviews and the BK is rated by a good few users here :)
I have pulled the trigger on the Gemini2, although I got it from BK's ebay store as postage was cheaper ;)
I saw that one but thought I would order a new one direct, I am not happy buying B grade unless I physically see it.
Also decided to update my AV amp, so plumped for a Denon 2400, its a risk from years of Yamaha's but it seems its better than the £350 options from Yamaha atm, especially considering the more plentiful inputs.
 

Similar threads

The latest video from AVForums

Podcast: New Denon AV Products, HDMI 2.1, 8K, DTS:X Pro Sound Q&A with Denon Product Specialists
Top Bottom