What should I do (or what would you do)?
wispolkboy
Posts: 150
I picked up the guts of a 5A. Peerless tweeters, mw6500, and the PR. And crossovers
All in very good condition.
Should I build a m5 cabinet for them, I am confident enough in my woodworking skills to duplicate the cabinets. (i would probably go with wood on the front)
I have 2 sets of m4s, one m5a, one m7a all with Peerless and mw6500.
Should I just keep as spare parts?
Just curious what others would do if they were in my position.
All in very good condition.
Should I build a m5 cabinet for them, I am confident enough in my woodworking skills to duplicate the cabinets. (i would probably go with wood on the front)
I have 2 sets of m4s, one m5a, one m7a all with Peerless and mw6500.
Should I just keep as spare parts?
Just curious what others would do if they were in my position.
M7's 1982 Peerless tweeters
M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
M4's X2 both with Peerless tweeters
M5Jr with SL1500 (in the garage, they sound great)
M4.6 series2 X2 with upgraded tweeters
SDA 2 with upgraded tweeters
M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
M4's X2 both with Peerless tweeters
M5Jr with SL1500 (in the garage, they sound great)
M4.6 series2 X2 with upgraded tweeters
SDA 2 with upgraded tweeters
Comments
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I mean technically building a box would also be spare parts... Just spare parts you are listneing to- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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Build the enclosures with a little more airspace. Maybe add a small weight to the PR and get them to dig lower.Don't take experimental gene therapies from known eugenicists.
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I mean technically building a box would also be spare parts... Just spare parts you are listneing to
True, I guess, for anything that one is not using...M7's 1982 Peerless tweeters
M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
M4's X2 both with Peerless tweeters
M5Jr with SL1500 (in the garage, they sound great)
M4.6 series2 X2 with upgraded tweeters
SDA 2 with upgraded tweeters -
Build the enclosures with a little more airspace. Maybe add a small weight to the PR and get them to dig lower.
What do you mean by adding weight...?M7's 1982 Peerless tweeters
M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
M4's X2 both with Peerless tweeters
M5Jr with SL1500 (in the garage, they sound great)
M4.6 series2 X2 with upgraded tweeters
SDA 2 with upgraded tweeters -
wispolkboy wrote: »
I have 5B's and wish they dug deeper like the 7's do, but keep their smaller footprint. You may have to experiment with adding small gram weights at a time until it is tuned to your liking.Don't take experimental gene therapies from known eugenicists. -
Build new cabinets the correct size/volume and add a sub if you want deeper bass.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
I love my 7s bass... I wonder if I just make the cabinets a bit bigger... Not much but just to see. My 5a's with my xo upgrade was a big improvement...M7's 1982 Peerless tweeters
M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
M4's X2 both with Peerless tweeters
M5Jr with SL1500 (in the garage, they sound great)
M4.6 series2 X2 with upgraded tweeters
SDA 2 with upgraded tweeters -
Build new cabinets the correct size/volume and add a sub if you want deeper bass.
That was my original thought as well... I like to get feedback from people on this forum... So much knowledge.M7's 1982 Peerless tweeters
M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
M4's X2 both with Peerless tweeters
M5Jr with SL1500 (in the garage, they sound great)
M4.6 series2 X2 with upgraded tweeters
SDA 2 with upgraded tweeters -
I believe my 5a's are particleboard, but I think that i would go with MDF... Is that a good idea?M7's 1982 Peerless tweeters
M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
M4's X2 both with Peerless tweeters
M5Jr with SL1500 (in the garage, they sound great)
M4.6 series2 X2 with upgraded tweeters
SDA 2 with upgraded tweeters -
well there is always this...
https://www.diyaudioandvideo.com/Calculator/SpeakerBoxEnclosure/
https://www.diyaudioandvideo.com/Calculator/SpeakerBoxVolume/
Speakers: Polk Lsim, ATC SCM19 v2, NHT SuperzeroSpeaker Cables: DH Labs, Transparent, Wireworld, Canare, Monster: Beer budget, Bose ears -
Interesting,.... I think if I didn't have something to copy or if I was making something from scratch I would use this. Have you or anyone else use this to make a new cabinet with polk speaker components?M7's 1982 Peerless tweeters
M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
M4's X2 both with Peerless tweeters
M5Jr with SL1500 (in the garage, they sound great)
M4.6 series2 X2 with upgraded tweeters
SDA 2 with upgraded tweeters -
wispolkboy wrote: »I believe my 5a's are particleboard, but I think that i would go with MDF... Is that a good idea?
Yes, and countersink the drivers on the baffle while you're at it.Don't take experimental gene therapies from known eugenicists. -
what I was thinking was, if you like the 7's but can't fit them,
skip the passive radiator and build a two way to suit.
(plus the suggested subwoofer in a convenient place)
No, I haven't done this with the 5's...Speakers: Polk Lsim, ATC SCM19 v2, NHT SuperzeroSpeaker Cables: DH Labs, Transparent, Wireworld, Canare, Monster: Beer budget, Bose ears -
Build thuh box!
Build thuh box!
Build thuh...
Srsly, that would be a neat project
The Thrifty Setups in Mah House Big thrifty stereo in the basement w/ my custom SDA-1C (built with help from kind forum members) * Beautiful 1966 MCM GE console upgraded w/ Bluetooth, Dual turntable, and Paradigm speakers in family room * Swanky 1980 Realistic system and great TEAC eq with dancing colored lights in the living room * custom 5B on a system for my Dad * Ye Olde college stereo in the garage -
I think I would make an enclosure the same volume or if speaker calculators say larger might be better, go a bit larger and modify passive weight to tune, but try to make more of a pyramidal shaped enclosure and countersink the drivers in the front baffle which is 2 thicknesses of MDF. That would allow a 1" radius roundover on the front baffle and also non-parallel sides tend to defeat internal standing waves and the narrower cabinet towards the tweeter and midwoofer end will promote better imaging.George / NJ
Polk 7B main speakers, std. mods+ (1979, orig owner)
Martin Logan Dynamo sub w/6ft 14awg Power Cord
Onkyo A-8017 integrated
Logitech Squeezebox Touch Streamer w/EDO applet
iFi nano iDSD DAC
iPurifier3
iDefender w/ iPower PS
Custom Steve Wilson 1m UPOCC Interconnect
iFi Mercury 0.5m OFHC continuous cast copper USB cable
Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
Custom Vibration Isolation Speaker Stands and Sub Platform -
Calculate the volume of the 7's and 5's, then divide by 2. That's the volume I'd go with.Don't take experimental gene therapies from known eugenicists.
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wispolkboy wrote: »I believe my 5a's are particleboard, but I think that i would go with MDF... Is that a good idea?
Yes.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
Gardenstater wrote: »I think I would make an enclosure the same volume or if speaker calculators say larger might be better, go a bit larger and modify passive weight to tune, but try to make more of a pyramidal shaped enclosure and countersink the drivers in the front baffle which is 2 thicknesses of MDF. That would allow a 1" radius roundover on the front baffle and also non-parallel sides tend to defeat internal standing waves and the narrower cabinet towards the tweeter and midwoofer end will promote better imaging.
Do you have a rough plan for this? So something like 14" at the base and tapering to 8" at the top?... This is just an example...M7's 1982 Peerless tweeters
M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
M4's X2 both with Peerless tweeters
M5Jr with SL1500 (in the garage, they sound great)
M4.6 series2 X2 with upgraded tweeters
SDA 2 with upgraded tweeters -
wispolkboy wrote: »Gardenstater wrote: »I think I would make an enclosure the same volume or if speaker calculators say larger might be better, go a bit larger and modify passive weight to tune, but try to make more of a pyramidal shaped enclosure and countersink the drivers in the front baffle which is 2 thicknesses of MDF. That would allow a 1" radius roundover on the front baffle and also non-parallel sides tend to defeat internal standing waves and the narrower cabinet towards the tweeter and midwoofer end will promote better imaging.
Do you have a rough plan for this? So something like 14" at the base and tapering to 8" at the top?... This is just an example...
That's the idea, but to determine the exact dimensions I'd use a CAD program which would calculate internal volume. I'd probably slope the front baffle and sides but keep the rear plumb/vertical. I'd make relief cuts on the inner baffle layer coinciding with the basket windows on the MW and Passive (sort of like a 4 leaf clover) and maybe even go with 1" MDF for the outer baffle layer but countersink deeper than basket flange and also have an external 1/2" roundover. That would also work with a future trim ring that could be coming sometime (who knows). The 1" MDF would have hardwood around the perimeter so that could be radiused and you wouldn't have to do any crazy veneer bending. The rest would be wood veneer except maybe matte black painted finish for the front baffle because of the 1/2" roundovers.George / NJ
Polk 7B main speakers, std. mods+ (1979, orig owner)
Martin Logan Dynamo sub w/6ft 14awg Power Cord
Onkyo A-8017 integrated
Logitech Squeezebox Touch Streamer w/EDO applet
iFi nano iDSD DAC
iPurifier3
iDefender w/ iPower PS
Custom Steve Wilson 1m UPOCC Interconnect
iFi Mercury 0.5m OFHC continuous cast copper USB cable
Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
Custom Vibration Isolation Speaker Stands and Sub Platform -
I see what you are getting at... An interesting idea.M7's 1982 Peerless tweeters
M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
M4's X2 both with Peerless tweeters
M5Jr with SL1500 (in the garage, they sound great)
M4.6 series2 X2 with upgraded tweeters
SDA 2 with upgraded tweeters -
I've always liked the Epicure 3.0's. Rare birds.Don't take experimental gene therapies from known eugenicists.
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I'd stick with original cabinet size/volume.afterburnt wrote: »They didn't speak a word of English, they were from South Carolina.
Village Idiot of Club Polk -
You could build an awesome center channel speakerGustard X26 Pro DAC
Belles 21A Pre modded with Mundorf Supreme caps
B&K M200 Sonata monoblocks refreshed and upgraded
Polk SDA 1C's modded / 1000Va Dreadnaught
Wireworld Silver Eclipse IC's and speaker cables
Harman Kardon T65C w/Grado Gold. (Don't laugh. It sounds great!)
There is about a 5% genetic difference between apes and men …but that difference is the difference between throwing your own poo when you are annoyed …and Einstein, Shakespeare and Miss January. by Dr. Sardonicus -
You could build an awesome center channel speaker
Thats a good idea, I would have no idea how the crossover would be. And the structure of the cabinet. Such as internal bracing. Do you know of anyone that has done this?M7's 1982 Peerless tweeters
M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
M4's X2 both with Peerless tweeters
M5Jr with SL1500 (in the garage, they sound great)
M4.6 series2 X2 with upgraded tweeters
SDA 2 with upgraded tweeters -
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Thanks for dragging me kicking and screaming into this Ivan.
My advice, build two enclosures with the exact same internal dimensions as the originals. The hard part has already been done: crossover design, and passive radiator size and weighting. Polk had/has some really smart people in R&D who forgot what I know. Keep it simple!
BTW, my center channel project used 5jr+ parts, not the early full size Monitor 5s.Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
I'm sorry Dave I couldn't find your thread with your excellent pictures.
Please forgive me. -
It would be a huge center channel with the pr from a regular 5a.
I have decided to build an exact copy (size) of a 5a. Going to use mahogany MDF. Same for the face of the speaker.
M7's 1982 Peerless tweeters
M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
M4's X2 both with Peerless tweeters
M5Jr with SL1500 (in the garage, they sound great)
M4.6 series2 X2 with upgraded tweeters
SDA 2 with upgraded tweeters -
I'm sorry Dave I couldn't find your thread with your excellent pictures.
Please forgive me.
Just busting your chops Ivan
Oh and BTW, my center channel thread is in my signature dufusHome Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
westmassguy wrote: »
LMAO ya know ever since we have legal weed in Illinois my memory has..... Wait what were we talking about?