So I had my audio system for nearly 16 years w/o any changes to it. In the mean time I have lost the ability to listen and enjoy it due to distractions at home and the actual placement of the system. Problem solved! Man-cave is in! I moved it all of it downstairs where I can finally enjoy it.Now to the point; I have long suspected that these speakers have an issue with high frequency reproduction. Great bass, and mid range but a lots of detail was just not there in high frequencies (yes the tweeters suffered from known maladies - but I have since replaced them with new OEM parts)
Recently I have decided I will try a cheap set of Pyramid TW28 tweeters ($19) . To my surprise I have instantly realized that a lot of detail was just not reproduced by P5's. The amount of detail and "Air" now is incredible. I can now listen to my records at low volume w/o attenuating the high frequencies - which i really like BTW! I suspect the efficiency of these tw28 96DB vs P5’s 90DB is partially the reason..
TW28 are 4 ohm with 3.3 uf cap installed 96DB
the P5's are 8 ohm, 90DB (the tweeter itself is 4 ohm but crossover adds additional impedance)
The amplification is Audiolab 8000S running bass and mid range and Audiolab 8000P running the high frequencies and add-on tweeter only. Mainly due to P5 crossover design (don’t want touch that yet) .
Question 1
Should I really worry about impedance issues? Tweeters are wired to HF posts on P5's that are fed from 8000P I have noticed 8000P a little warmer after the whole day but still cooler that 8000S is normally.
Question 2
Should I utilize an inline resistor to bring impedance up (added in between P5’s post and the (+) on the tweeter . These 100W 4ohm resistors run like 3$ on Ebay?
Question 3
Aside from a fact that these are considered throw away tweeter is there a better combinations of caps and resistors I could use to match both better? For instance could/should I replace 3.3uf caps with a different value? A custom L – pad?
I know that there are better tweeters out there… I know that I could get fostex –stand alone super tweeters – but that’s not the point. I would still have the same issue BTW. These are fine to my ear- just looking to tweak the system better.
Thank you for any useful suggestions!
- Status
- Not open for further replies.