I
Ian Molton
Hi.
I have a pair of 'home made' Radford Monitor 1 speakers (I think they
are monitor 1s anyhow)
They have genuine Radford driver units, but the left speaker seems to
have problems with its midrange drivers.
I removed one of the drivers, and fed it a 1kHz sine, which came out
sounding practically square.
pressing gently on the top side of the cone restored a nomal tone.
I tested the other unit on a hunch and it was bad too, same fault.
They have had gentle treatment, and the tweeters are intact, so I
suspect the cones have simply distorted over their many years (pushing
on the same side of the drivers fixes both of them, and they were
mounted the same way up.) I dont think they were overdriven.
The speakers were wired in series, being 4 ohm drivers, the rest of the
system all being 8 ohms. the crossover seems good (and heavy!)
Given how good these speakers sound when working, I'd like to get the
two damaged midranges fixed (there are two per speaker).
I dont want to go to any old 'car hifi' reconer, these are very much
hi-fi units.
Can anyone recommend a good reconing service, or a source of genuine
radford replacement drivers (4 ohm, midrange, ~3.75-4inches dia)
I forgot to note the part number, but can look it up. I am in the UK
I have a pair of 'home made' Radford Monitor 1 speakers (I think they
are monitor 1s anyhow)
They have genuine Radford driver units, but the left speaker seems to
have problems with its midrange drivers.
I removed one of the drivers, and fed it a 1kHz sine, which came out
sounding practically square.
pressing gently on the top side of the cone restored a nomal tone.
I tested the other unit on a hunch and it was bad too, same fault.
They have had gentle treatment, and the tweeters are intact, so I
suspect the cones have simply distorted over their many years (pushing
on the same side of the drivers fixes both of them, and they were
mounted the same way up.) I dont think they were overdriven.
The speakers were wired in series, being 4 ohm drivers, the rest of the
system all being 8 ohms. the crossover seems good (and heavy!)
Given how good these speakers sound when working, I'd like to get the
two damaged midranges fixed (there are two per speaker).
I dont want to go to any old 'car hifi' reconer, these are very much
hi-fi units.
Can anyone recommend a good reconing service, or a source of genuine
radford replacement drivers (4 ohm, midrange, ~3.75-4inches dia)
I forgot to note the part number, but can look it up. I am in the UK
