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Kiwa offers an audio upgrade kit to improve the audio quality of the R70 receiver. The audio upgrade kit replaces capacitors in the audio signal path with types that have improved sonic characteristics. The capacitors in both AM and SSB signal paths are replaced. The end result is that consonants like k's, c's and q's will sound sharper with improved definition. This improves the overall intelligibility. The kit comes with instructions. Soldering and desoldering experience is required. No alignment is required after completion. Kiwa also offers installation of the audio upgrade if you do not feel comfortable installing the required components.
For more information regarding Kiwa Audio Upgrades - please see Kiwa Audio Upgrades - A Brief History
R70 Audio Upgrade kit $22.00
Shipping and Handling within North America $2.00
Shipping and Handling outside North America $4.00
Installation by Kiwa Electronics (includes components) $70.00
Price does not include return shipping of the receiver.
The stock wide filter(f15) is a Murata CFW455HT.This has a typical -6 dB bandwidth that can vary from 8 to 12 kHz depending on the production lot and tolerance. Kiwa offers several filter options that are a direct replacement to the original filter. These are all a pin per pin replacement. Installation instructions are included.
Kiwa "Blue Dot"filter (-6 dB BW 6.5 kHz) $20
LFH4S (-6 dB BW 7.5 kHz) $20.00
LFH6S (-6 dB BW 8.2 kHz) $25.00
Shipping and Handling within North America $2.00
Shipping and Handling outside North America $4.00
Note: only one S&H charge is required when ordering both the audio and filter upgrade.
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