Hello all. I’m new to the Dynaco Forum. Glad there is a place to consult with other owners. A couple of years ago, I purchased an ST-70 Series 3 amplifier. I have Klipschorn speakers, which are known to be on the bright side. I feel that my amplifier is too harsh with highs that are overbearing. Has anyone tried any other tubes that might tame this brassy sound and give a warmer tone over the factory installed JJs?
4 posters
ST-70 Series 3 Tube Selection. Too Bright.
johprice- Posts : 7
Join date : 2022-01-31
peterh- Posts : 1833
Join date : 2012-12-25
Location : gothenburg, sweden
Why don't you turn down your treble control ?johprice wrote:Hello all. I’m new to the Dynaco Forum. Glad there is a place to consult with other owners. A couple of years ago, I purchased an ST-70 Series 3 amplifier. I have Klipschorn speakers, which are known to be on the bright side. I feel that my amplifier is too harsh with highs that are overbearing. Has anyone tried any other tubes that might tame this brassy sound and give a warmer tone over the factory installed JJs?
corndog71- Posts : 840
Join date : 2013-03-19
Location : It can get windy here
Another option would be to replace the caps on the tweeter circuit of the crossovers. The crossover in any factory made speaker is often built with very cheap parts. Replacing the caps with good film capacitors can make a big difference in the sound of the speaker. I recommend Clarity Caps.
Dave_in_Va- Posts : 443
Join date : 2013-04-02
Location : Mid. VA
I doubt that his Klipschorns were built with cheap caps. They're fairly expensive speakers.
The first thing I would do is try another pair of speakers if possible. I recently bought a new pair of Klipsch Forte IVs and ended up selling them specifically because of the harshness of the high end.
I doubt if you're going to get any kind of drastic sound quality change by swapping in new power tubes.
The first thing I would do is try another pair of speakers if possible. I recently bought a new pair of Klipsch Forte IVs and ended up selling them specifically because of the harshness of the high end.
I doubt if you're going to get any kind of drastic sound quality change by swapping in new power tubes.
corndog71- Posts : 840
Join date : 2013-03-19
Location : It can get windy here
Dave_in_Va wrote:I doubt that his Klipschorns were built with cheap caps. They're fairly expensive speakers.
The first thing I would do is try another pair of speakers if possible. I recently bought a new pair of Klipsch Forte IVs and ended up selling them specifically because of the harshness of the high end.
I doubt if you're going to get any kind of drastic sound quality change by swapping in new power tubes.
The cost of the speakers makes no difference on crossover parts. The vast majority of companies (Including Klipsch) put the cheapest parts in there because most people are ignorant of these things and the company wants to hit a price point. Only a handful of companies bother with better parts.
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