Version 2 by Alex Kitic -- RH Amplifiers: RH84 amplifier - revision 2
Is the 7th iteration discussed anywhere in the forum? Interest on how the the schematics went along .... Thanks
Is the 7th iteration discussed anywhere in the forum? Interest on how the the schematics went along .... Thanks
Version 2?
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As of this writing I have 2 pairs of each 2 pairs of FH3 and 2 pairs of FHXL. The second pair of XL’s are going to have the extra Baffle so I can change driver fairly easy . First I am going with the not so efficient tang band W6-2144, for the simple reason I never heard a tang band driver!?! My question is does anyone use a Lowther driver in the XL’s for a more efficient driver and which one might work best??? It’s a work in progress, I have too many 2wpc tube amplifiers, thanks
My question is does anyone use a Lowther driver in the XL’s for a more efficient driver and which one might work best???
I expect that most Lowthers, those that need a horn, would have the same struggles as the Fostex FExx6 seies, but the PM6 (i have done Low-Kens for 2 of them) mght be well suited to Joan. Don’t know about the smaller Lowthers. The Alnico version might have issues with actaully fitting into the box.
Scott?
dave
Tangband W6-2144
W6-2144 - 6.5" Paper Full Range - TB SPEAKER CO., LTD.
On first glance it looks like a decent fit.
dave
Could the Dayton PS180-8 be used in the FHXL?
Resonant Frequency (Fs) 58.5Hz
DC Resistance (Re) 6.4Ω
Voice Coil Inductance (Le) 0.63mH
Mechanical Q (Qms) 3.64
Electromagnetic Q (Qes) 0.36
Total Q (Qts) 0.33
Compliance Equivalent Volume (Vas) 1ft³
Mechanical Compliance of Suspension (Cms) 1.05mm/N
BL Product (BL) 6.82T·m
Maximum Linear Excursion (Xmax) 4.6mm
Surface Area of Cone (Sd) 132.7cm²
Looks reasonable. PS220 goes into Joan (just).
Those are the numbers you need to look at. If they are reasonably close to the Alpair 10p you are probably fine, further away it should be modeled.
dave
Resonant Frequency (Fs) 58.5Hz
Total Q (Qts) 0.33
Compliance Equivalent Volume (Vas) 28 litres
Those are the numbers you need to look at. If they are reasonably close to the Alpair 10p you are probably fine, further away it should be modeled.
dave
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