Old CD 5.25" Drive Speaker amp Modding Help/Tips

[Osalot]

I have a few old CD 5.25" Drive Speaker amps and they sound good ( will list issues I have with them) and I am new to the diy audio and just need some help/ tips to make them better sounding (if at all possible to do ) examples of what better capacitors and resistors to use

Here's what it use to look like pic

An externally hosted image should be here but it was not working when we last tested it.

Issues:
Static at the 3.5mm jacks when plugging in or removing
Tiny sound in the background
Needs more bass
Amp over heats even on 5v

Here's what I am doing now to it for my to do list

Todo list:
Amp needs cooling (have a heat sink for it)
Needs better speakers (came with 4 ohm speakers)
Needs to be more compact (saves desk space)
Replace Jacks with insulated ones


Here's the pics of the board and parts of them and will list the current parts used on them all ready

List of parts and the specs that are on them

AMP
1x  LAM555 3 V 6

Caps
A1 1x  Hitano 1000uf 16v Temp -40 +85 °C
B1 2x Jackcon 470uf 16v  Temp -40 +85 °C
C1 7x Jackcon 100uf 16v  Temp -40 +85 °C

Ceramic Caps ( do not know there rating)
A2 2x 104J 100JS
B2 2x 2A102J

Diode (do not know the rating)
A4 1x 400 10 (some of it may be hidden by the big cap)

Resistors
A3 2x 15.K ohms
C2 1x 1.3K ohms
B3 2x 18.K ohms
D1 2x 130 ohms

Power connectors
1x DC in plug
1x floppy molex

Other
1x Pot (unsure what the rating is)
3x uninsulated 3.5mm jacks
1x green LED
2x pin connectors (used for speakers)

View pic for listed caps and resistors to match ratings to the pic
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Pics of the board and layout

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[Osalot]

Any ideas on what manufacturer of capacitors to go with to replace the current ones that are better for audio? 😕

 

[dangus]

Swapping capacitors and resistors is unlikely to make any difference. It could pay to check the useful frequency response of the speakers, then make sure the amp isn't wasting power attempting to reproduce frequencies below that range. Apart from that, stuff some acoustic damping in behind the speakers (steal some fiberglass batting from the attic or a construction site), and do a sine-wave sweep to identify any annoying buzzes.