五拾

個3.5平衡堅定流?

pallee

回覆 21# 五拾

Four wires from tip to tail.

五拾

回覆 22# pallee


    拆機睇2個3.5底座係ー樣

pallee

回覆 23# 五拾

No, connections are different at two ports.

When you plug a balanced 3.5 mm cable to the stereo port, R doesn't sound. Hence stereo port has 3 wires only (R- unconnected).

If you plug the same cable to the balanced port, the 4th wire is restored. Both L and R sound. Hence balanced port has 4 wires (L+, R+, L-, R-).

It may uses the same material on two ports but the stereo port has the 4th pin unconnected.

pallee

回覆 23# 五拾

立體聲座焊少咗一條針 (第四針), 也把第三針焊接地。

pallee

With HDAM 9988 opamp, battery drops more rapidly. XS03 becomes warmer while playing. Max. playing time is around 5 hours only.

HDAM opamp draws more power due to redundant transistors

pallee

上次用了 高電壓版 HDAM 9988 (9 - 27 V), 有低頻量少的情況,原來 UNDERVOLT 咗。XS03 是 8 V 機。

換了 低電壓版 HDAM 9988 (4 - 18 V), 完全沒問題了。

單端已非常好聲, 平衡再提升了聲音分離度和樂器定位。

pallee

下載 (117.93 KB)

2019-6-25 21:57

pallee

低電壓版 HDAM 9988 是貼片, 我又不想用熱風槍, 所以叫 OPAMP 店家幫我加針。還要用裸針去局限高度 (否則合不到蓋)。店家也很幫忙, 沒有多收我錢。

leungleung1234

低電壓版 HDAM 9988 是貼片, 我又不想用熱風槍, 所以叫 OPAMP 店家幫我加針。還要用裸針去局限高度 (否則合 ...
pallee 發表於 2019-6-25 22:04

師兄因為我打算入手這部機，所以想問一下你可不可以PM的我你是在那家淘寶店買低電壓版HDAM 9988呢？

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