The following table shows details of tweeters likely to have been used in production Isobariks.
|Tweeters||a) Scan-Speak D2008||b) Scan-Speak D2008/8511||c) Linn D20-LP-1|
|Age||late 70's||80's?||mid 80's - still in production|
|Comments||This would have been the driver originally fitted to production Isobariks.||This one may or may not have been used in production prior to the change to the Hiquphon unit. I had a pair fitted to one of my Isobariks but I don't know if they were original.||These are OEM drivers made for Linn by Hiquphon. I have been unable to find any documentation or specification for them and neither Linn nor Hiquphon are willing to provide it for this faq. They are available solely from Linn Products. Later versions have a Linn logo on the front face.|
The following table shows details of tweeters unlikely to have been or definately not used in production Isobariks but which are suitable as replacements.
|Tweeters||d) Scan-Speak D2008/851200||e) Linn Ninka Tweeter||f) Hiquphon OW1-92|
|a.k.a.||OW1 with 92mm faceplate|
|Weight||0.4kg||0.36kg for 94mm faceplate model|
|Programme||150W (12dB/octave crossover at 4kHz)||100W (12db/octave crossover at 2.5kHz )|
|Comments||Due to its more recent age, this driver would not have been used in production but it can be fitted today in place of older versions, something that has been done by a number of owners, myself included. They do not come in matched pairs but are generally sold from the same batch. I could find no details of changes to the specification over the years. The design of the front face has remained the same throughout the variations in model number.||The tweeter used in the Linn Ninka loudspeaker has been used as a replacement quite successfully. One Linn dealer has said it sounds quite good in the Isobarik and is a popular choice.||Hiquphon will happily supply their OW1 tweeter with a special 92mm faceplate to fit the Isobarik and suggest it would make 'a very fine substitute'. They are supplied in matched pairs.|