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HF Driver/Diaphragm for Legacy products (General)
If you’ve received a new alternative HF Driver or HF Diaphragm for a legacy product and you are having issues with the sound, please note the below.
If the sound is dull, not clear or lacking in volume, then you are most likely hearing a noticeable phase shift.
For any of the below legacy products, where the serial number begins with an ‘8’ (852664), please note that any new alternatives for the obsolete High Frequency Diaphragms or Tweeters (HF Drivers) may need their terminals reversed when replacing. This article does not cover the products where the serial number begins with an ‘S’ (S1700499AVX) as these work as intended.
Table 1: Possible legacy products where phase shift could occur
CVS 6 BK
DVS 6T (EN54)-WH
CVS 6 (EN54)
DVS 6T (EN54)
CVS 4 (EN54)
DVS 4T (EN54)-WH
CVS 8 BK
CVS 4 MICRO (EN54)
DVS 4T (EN54)
For any new alternative HF Drivers that will replace the original, they will most likely look very different in size. This is due to different magnet types being used. However, the performance and the mounting points are the same and the durability is significantly improved. It is advised to replace both speaker parts to receive the best possible performance from the product.
In order for the drivers to be compatible, the terminals of the HF Diaphragm must be swapped during installation, following the procedure below (The photos are not completely representative of the products in the table):
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