- #41 [徐福], 21-02-18 20:39
- #42 [藍晶晶], 21-02-18 23:06结果都係訂了15.5。稍後報告。谢大家意見
- #43 [pp5970], 21-02-20 11:20我確實將所有喇叭內線也更換同一樣的線材,我也對很多的VA喇叭作測試,包括15吋低音也試過無任何衰弱。我也試過更換過L35A的內線(包括高音單元的接線),也效果顯著!
最後修改時間: 2021-02-20 11:26:06 -
- #44 [geotyc], 21-02-20 19:50換過喇叭內線,由插頭到內部分音器,再由分音器到每個單元喇叭。換完一天都光曬!高音清與細緻好多,中音甜美,低音實淨好多。
- #45 [geotyc], 21-02-20 19:58也換過機內的電線,由IEC 插頭到火牛。
如果再可以再由火牛到底板。整體提升好多!
入火牛之前再會加鐵粉圈做過濾。 - #46 [藍晶晶], 21-02-20 20:46換過喇叭內線,由插頭到內部分音器,再由分音器到每個單元喇叭。換完一天都光曬!高音清與細緻好多,中音甜美,低音實淨好多。 . <<<<<< 仍係果個問題. 用什麼線同粗度, 可以講講嗎?
- #47 [wingkong637], 21-02-21 02:21仍係果個問題. 用什麼線同粗度, 可以講講嗎? x2
- #48 [geotyc], 21-02-25 10:32看您希望有什么效果的音色而決定什么線,主要是單芯線或是多芯stranded wire。單芯會比較硬而看您的功夫而決定粗幼,當然越粗就越少電阻就越有效。
曾經用過12awg 在喇叭內與機箱內。都要看機內部空間有多少。
很多內線都非常差又幼!我基本每台機都換左。 - #49 [藍晶晶], 21-02-26 13:12剛拆左低音D線出來.....全部係16AWG 鍍錫線...換上15.5AWG CARDAS...通透得來低音馬上潛深左. 睇下煲下又會點.
- #50 [alexanderkoo], 21-02-27 12:07Vintage Rogers LS 4/2a had warped surround, glued by duct tape. Voice coil still ok by slightly pressing the cone, no rubbing. Recently, replaced by Eminence 8" units from Amazon. Shipping of crossover from Wai Leung is underway. Bought Teflon cable for replacement, too, just in case. Anyway, it's of short length when compared to external speaker cable.
Glue for surround replacement for units taken out, too. Not worth taking to duck st. for the work.
最後修改時間: 2021-02-27 12:07:51 - #51 [alexanderkoo], 21-03-03 10:43Took out the speaker units again and checked the crossover which was bolted to the back of the four terminal posts direct, viz 2 way inside the crossover so the Wai leung one was not exactly suitable without major mod.(a row of terminals for external wiring) Besides, original caps were of Solen make, should be OK. Nothing to do except replacing the old cables(looked like small electrical cable, less than 0.5 sq. mm, no marking/brand) by Telfon ones. (too rigid, not flexible)
Forgot to put back the foam, redid the work again. Appeared to have 10% improvement, hopefully not King's new clothes. Late in the evening, so didn't test thorough enough.(especially in village house of silent background) Good cable may not enhance system but bad one has deteriorating effect which should be eliminated.
最後修改時間: 2021-03-03 10:44:28 - #52 [pp5970], 21-03-05 12:35藍 Ching,更換線材後效果怎樣?
- #53 [藍晶晶], 21-03-05 13:21藍 Ching,更換線材後效果怎樣?<<<<< 低音量同質素都好左好多(約20%吧). 可能因為用了CARDAS線關係. 高中低音融合得好好. 低音自然而通透. 又想緊...換再粗D又會點呢? 不過真係怕煩. 唔想再拆箱了.
- #54 [alexanderkoo], 21-03-05 13:36I am using 1.5 sq mm, simply teflon cable. $9/m. The thicker the better.(see the hose type speaker cable) But getting to the crossover, still thin PCB trace, bottleneck unless hardwiring.
Took out the speaker units again and started installing the new crossovers.(only having two terminals for input) Sacrifice the biwiring. According to Cambridge audio, a good X' over is better than biwiring.
最後修改時間: 2021-03-05 13:37:31 - #55 [alexanderkoo], 21-03-10 09:04Eventually installed the Wai Leung 12dB/octave crossovers, RMB 58 each. Improvement was substantial,25%, as if they're new set of speakers.(indeed, the woofers were new) Internal cabling, audioquest type 4 scrap cable, one for each terminal, outgoing cables, still 1.5 sq.mm, no change. I am not sure whether change of 3.5" tweeters would help.(marked as year 1992)
Crossover does not only provide cutoff frequency but equalising the loudness and speed of individual frequency bands. That's why being so critical.
最後修改時間: 2021-03-10 09:08:10 - #56 [Krell], 21-03-10 21:47近代喇叭好多唔係咁容易拆開攪分音器。濫粗嚟會整爛。
古董焗拆換電容。 - #57 [alexanderkoo], 21-03-11 16:41Better not touch especially for exquisite or vintage speakers, and access from the front speaker units.
Just ordered a pair of tweeters from Amazon. They come with individual capacitors. May not be required since already got the crossovers. - 返回 ...
最後修改時間: 2021-02-18 20:54:45