Candidates for use in a Glorious Boombox or travel-friendly separates.

• Peerless GBS-135F25AL02-04 Weird 4.5“ alu. dome, 54cm². Low Xmax? Big 3kHz peak. $31
• FaitalPRO 4FE32 (4Ω, also available in 8Ω) 4” paper. 91dB, 100Hz. Specs look smooth. $37
• Peerless NE123W-08 4“, fancy alu. frame, coated paper. 54cm², 87dB, 61Hz. Odd 1.5k bump. $64.
• Peerless NE149W-04 (4Ω, also available in 8Ω). 5-1/4”, fancy alu. frame, coated paper. 85cm², 86dB, 54Hz. Very goofy and pronounced 1.5k bump/dip. $82
• Peerless NE180W-08 (8Ω, also available in 4Ω.) 6.5“, fancy alu. frame, coated paper. 137cm², 87.4dB, 42Hz. 5k peak, some goofiness around 1.5k. $88

• Dayton Audio RS125P-4 5" Reference Paper Woofer 4 Ohm
• Dayton Audio RS150T-8 6" Reference Woofer Truncated Frame

Capped at $50.

• Peerless 830656 5-1/4” $15
• Peerless SDS-160F25PR01-08 6-1/2“ $17
• Peerless 830657 6-1/2” $21
• Dayton Audio DA135-8 5-1/4“ Aluminum. Dip/peak around 4.2kHz—possibly main resonance. $22
• Dayton Audio DSA135-8 5” alu cone, pretty frame. 75cm², 87dB, 52Hz. Peak appears well controlled. Heavy? $26
• Dayton Audio DS135-8 5“ coated paper cone, pretty frame. 75cm², 87dB, 53Hz. 1.2kHz dip. Heavy? $25
• Dayton Audio DSA175-8 6-1/2” Designer Series alu cone $37
• Dayton Audio DS175-8 6-1/2“ Designer Series coated paper $36

https://www.parts-express.com/cat/woofers/15?N=19809+4294967118+4294964883+4294964898+4294964690+4294964486+4294967060+4294964296+4294964800+4294965074+4294961226&Ne=10166&Nrs=collection%28%29%2Frecord%5Bendeca%3Amatches%28.%2C%22P_PortalID%22%2C%221%22%29+and+endeca%3Amatches%28.%2C%22P_Searchable%22%2C%221%22%29%5D&Ns=P_BestPrice%7C0&PortalID=1